Stormsæson, måned for måned rundt om i verden

Tornadoer, derechoer, hagl — de eftermiddage hvor man holder øje med himlen.

Dette er en advarselsside, ikke en anbefaling. Stormsæson dækker 41 rejsemål på SeasonMap; månederne nedenfor er dem, hvor risikovinduet er åbent — de fleste uger i dem går stille, og scoren ved siden af hvert sted er stadig den almindelige klimascore, risiko og det hele.

← Alle sæsonerVerdens kalender

Hvornår den er i gang

Antal rejsemål med stormsæson i gang i den måned. Tidsrummene flytter sig en smule hvert år.

Stormsæson i januar

  1. Ezulwini Valley 🇸🇿 EswatiniThunderstorm and lightning season · 15. okt. – 31. mar. (normalt)Eswatini has recorded one of the world's highest lightning death rates, almost all in afternoon summer storms.82
  2. Johannesburg 🇿🇦 South AfricaHighveld afternoon storms · 15. okt. – 15. mar. (normalt)Storms build over the reef most summer afternoons: hail, lightning and intersections under water for an hour.80
  3. Costa da Caparica 🇵🇹 PortugalWinter storms and erosion · 1. nov. – 15. mar.Atlantic depressions push straight onto this coast and take the sand with them; sections of the boardwalk and the beach access stairs are regularly closed for repair after a bad week.77
  4. Pretoria 🇿🇦 South AfricaAfternoon thunderstorms · 15. okt. – 15. mar. (normalt)Storms come off the Magaliesberg most summer afternoons: hail, lightning and half an hour of water the stormwater drains cannot take.77
  5. Drakensberg 🇿🇦 South AfricaAfternoon thunderstorms · 1. nov. – 28. feb. (normalt)Storms build over the escarpment most summer afternoons, with lightning on the tops, hail and water coming down the gullies within minutes.76
  6. Córdoba 🇦🇷 ArgentinaHail and summer storms · 1. nov. – 28. feb. (normalt)The sierras west of the city build some of the most violent storms anywhere: hail big enough to write off parked cars, and flash floods in the valley rivers that catch swimmers downstream of dry-looking weather.75
  7. Mbabane 🇸🇿 EswatiniThunderstorm and lightning season · 1. okt. – 31. mar. (normalt)Afternoon thunderstorms over the highveld are frequent in summer, and Eswatini has recorded one of the highest lightning death rates anywhere.75
  8. Durban 🇿🇦 South AfricaSummer storm and flood season · 1. nov. – 31. mar. (normalt)KwaZulu-Natal's rain comes as violent afternoon storms and, every few years, as the kind of flooding that takes out roads and closes the beaches to swimming for days on hygiene grounds.72
  9. Hervey Bay 🇦🇺 AustraliaStorm season · 1. nov. – 30. apr.Queensland's storm season runs November to April, and this stretch of coast sees the tail of systems that cross further north as much as it sees cyclones of its own.70
  10. Brisbane 🇦🇺 AustraliaStorm season · 1. nov. – 30. apr.Queensland's storm season runs November to April.68
  11. Mlilwane Wildlife Sanctuary 🇸🇿 EswatiniSummer thunderstorm season · 15. okt. – 28. feb. (normalt)Most of the year's rain falls in violent afternoon thunderstorms with frequent lightning.63
  12. La Rochelle 🇫🇷 FranceAtlantic storm season · 1. nov. – 28. feb. (normalt)Depressions come in off the Atlantic all winter, and on a high spring tide the sea gets over the sea wall on the Vieux Port.58
  13. Dingle 🇮🇪 IrelandAtlantic storm season · 15. okt. – 28. feb. (normalt)Named lows come in off the ocean from mid-autumn and the peninsula takes them first.55
  14. Seattle 🇺🇸 United StatesWinter storms and pass closures · 1. nov. – 28. feb. (normalt)Atmospheric rivers bring wind, flooding and power cuts through the dark months, and Snoqualmie and Stevens close for hours at a time for avalanche control.52
  15. Ostend 🇧🇪 BelgiumNorth Sea gales · 15. okt. – 15. mar.Autumn and winter depressions come straight in off the North Sea and the sea dyke gets closed when a storm surge is forecast.49
  16. Clifden 🇮🇪 IrelandAtlantic gale season · 15. okt. – 15. mar. (normalt)Named storms come in off the ocean with nothing between here and Newfoundland to slow them.49
  17. Tórshavn Faroe IslandsAtlantic gale season · 1. okt. – 31. mar. (normalt)Autumn and winter lows cancel the inter-island ferries, the helicopter and the flights into Vagar, sometimes for two days together.45
  18. Ålesund 🇳🇴 NorwayAtlantic gale season · 15. okt. – 28. feb. (normalt)The exposed coast takes named Atlantic lows from mid-autumn, and the first thing they cancel is the ferry and the fjord sailings rather than the flights.26
  19. Svolvær 🇳🇴 NorwayWinter gales · 15. okt. – 15. mar. (normalt)Atlantic lows shut the mountain passes on the E10 and cancel the small-plane flights into Svolvaer for a day at a time.20

Det sker rundt om i verden i januar →

Stormsæson i februar

  1. Johannesburg 🇿🇦 South AfricaHighveld afternoon storms · 15. okt. – 15. mar. (normalt)Storms build over the reef most summer afternoons: hail, lightning and intersections under water for an hour.82
  2. Costa da Caparica 🇵🇹 PortugalWinter storms and erosion · 1. nov. – 15. mar.Atlantic depressions push straight onto this coast and take the sand with them; sections of the boardwalk and the beach access stairs are regularly closed for repair after a bad week.81
  3. Ezulwini Valley 🇸🇿 EswatiniThunderstorm and lightning season · 15. okt. – 31. mar. (normalt)Eswatini has recorded one of the world's highest lightning death rates, almost all in afternoon summer storms.80
  4. Córdoba 🇦🇷 ArgentinaHail and summer storms · 1. nov. – 28. feb. (normalt)The sierras west of the city build some of the most violent storms anywhere: hail big enough to write off parked cars, and flash floods in the valley rivers that catch swimmers downstream of dry-looking weather.77
  5. Pretoria 🇿🇦 South AfricaAfternoon thunderstorms · 15. okt. – 15. mar. (normalt)Storms come off the Magaliesberg most summer afternoons: hail, lightning and half an hour of water the stormwater drains cannot take.77
  6. Drakensberg 🇿🇦 South AfricaAfternoon thunderstorms · 1. nov. – 28. feb. (normalt)Storms build over the escarpment most summer afternoons, with lightning on the tops, hail and water coming down the gullies within minutes.77
  7. Mbabane 🇸🇿 EswatiniThunderstorm and lightning season · 1. okt. – 31. mar. (normalt)Afternoon thunderstorms over the highveld are frequent in summer, and Eswatini has recorded one of the highest lightning death rates anywhere.75
  8. Durban 🇿🇦 South AfricaSummer storm and flood season · 1. nov. – 31. mar. (normalt)KwaZulu-Natal's rain comes as violent afternoon storms and, every few years, as the kind of flooding that takes out roads and closes the beaches to swimming for days on hygiene grounds.69
  9. Hervey Bay 🇦🇺 AustraliaStorm season · 1. nov. – 30. apr.Queensland's storm season runs November to April, and this stretch of coast sees the tail of systems that cross further north as much as it sees cyclones of its own.69
  10. Brisbane 🇦🇺 AustraliaStorm season · 1. nov. – 30. apr.Queensland's storm season runs November to April.66
  11. La Rochelle 🇫🇷 FranceAtlantic storm season · 1. nov. – 28. feb. (normalt)Depressions come in off the Atlantic all winter, and on a high spring tide the sea gets over the sea wall on the Vieux Port.66
  12. Mlilwane Wildlife Sanctuary 🇸🇿 EswatiniSummer thunderstorm season · 15. okt. – 28. feb. (normalt)Most of the year's rain falls in violent afternoon thunderstorms with frequent lightning.61
  13. Dingle 🇮🇪 IrelandAtlantic storm season · 15. okt. – 28. feb. (normalt)Named lows come in off the ocean from mid-autumn and the peninsula takes them first.60
  14. Ostend 🇧🇪 BelgiumNorth Sea gales · 15. okt. – 15. mar.Autumn and winter depressions come straight in off the North Sea and the sea dyke gets closed when a storm surge is forecast.59
  15. Seattle 🇺🇸 United StatesWinter storms and pass closures · 1. nov. – 28. feb. (normalt)Atmospheric rivers bring wind, flooding and power cuts through the dark months, and Snoqualmie and Stevens close for hours at a time for avalanche control.58
  16. Tórshavn Faroe IslandsAtlantic gale season · 1. okt. – 31. mar. (normalt)Autumn and winter lows cancel the inter-island ferries, the helicopter and the flights into Vagar, sometimes for two days together.53
  17. Clifden 🇮🇪 IrelandAtlantic gale season · 15. okt. – 15. mar. (normalt)Named storms come in off the ocean with nothing between here and Newfoundland to slow them.53
  18. Ålesund 🇳🇴 NorwayAtlantic gale season · 15. okt. – 28. feb. (normalt)The exposed coast takes named Atlantic lows from mid-autumn, and the first thing they cancel is the ferry and the fjord sailings rather than the flights.41
  19. Svolvær 🇳🇴 NorwayWinter gales · 15. okt. – 15. mar. (normalt)Atlantic lows shut the mountain passes on the E10 and cancel the small-plane flights into Svolvaer for a day at a time.32

Det sker rundt om i verden i februar →

Stormsæson i marts

  1. Johannesburg 🇿🇦 South AfricaHighveld afternoon storms · 15. okt. – 15. mar. (normalt)Storms build over the reef most summer afternoons: hail, lightning and intersections under water for an hour.87
  2. Ezulwini Valley 🇸🇿 EswatiniThunderstorm and lightning season · 15. okt. – 31. mar. (normalt)Eswatini has recorded one of the world's highest lightning death rates, almost all in afternoon summer storms.87
  3. Costa da Caparica 🇵🇹 PortugalWinter storms and erosion · 1. nov. – 15. mar.Atlantic depressions push straight onto this coast and take the sand with them; sections of the boardwalk and the beach access stairs are regularly closed for repair after a bad week.83
  4. Pretoria 🇿🇦 South AfricaAfternoon thunderstorms · 15. okt. – 15. mar. (normalt)Storms come off the Magaliesberg most summer afternoons: hail, lightning and half an hour of water the stormwater drains cannot take.83
  5. Mbabane 🇸🇿 EswatiniThunderstorm and lightning season · 1. okt. – 31. mar. (normalt)Afternoon thunderstorms over the highveld are frequent in summer, and Eswatini has recorded one of the highest lightning death rates anywhere.83
  6. Atlanta 🇺🇸 United StatesSpring severe-storm season · 1. mar. – 15. maj (normalt)North Georgia's tornado and hail season runs through spring, and the warnings here come overnight as often as in the afternoon.79
  7. Memphis 🇺🇸 United StatesSpring storm season · 15. mar. – 31. maj (normalt)Late winter and spring bring the line squalls that flood the streets and take the power out for days, and the Mississippi runs its highest in the same weeks.74
  8. Durban 🇿🇦 South AfricaSummer storm and flood season · 1. nov. – 31. mar. (normalt)KwaZulu-Natal's rain comes as violent afternoon storms and, every few years, as the kind of flooding that takes out roads and closes the beaches to swimming for days on hygiene grounds.74
  9. Kansas City 🇺🇸 United StatesSpring storm season · 15. mar. – 15. jun. (normalt)The wettest and stormiest stretch of the year, with hail, tornado warnings and flash flooding on the creeks.74
  10. Nashville 🇺🇸 United StatesSpring storm season · 15. mar. – 20. maj (normalt)Middle Tennessee gets its severe weather in spring: squall lines, tornado warnings and the flooding that put downtown under water in 2010.73
  11. Kolkata 🇮🇳 IndiaKalbaisakhi storm season · 20. mar. – 20. maj (normalt)Late-afternoon squall lines come out of the northwest through the hot months, drop the temperature in minutes and take trees and hoardings down with them.71
  12. St. Louis 🇺🇸 United StatesSevere storm season · 15. mar. – 15. jun. (normalt)Spring is when the warm Gulf air meets the cold front over the Mississippi valley, and the region sits at the eastern edge of tornado country.69
  13. Hervey Bay 🇦🇺 AustraliaStorm season · 1. nov. – 30. apr.Queensland's storm season runs November to April, and this stretch of coast sees the tail of systems that cross further north as much as it sees cyclones of its own.66
  14. Ostend 🇧🇪 BelgiumNorth Sea gales · 15. okt. – 15. mar.Autumn and winter depressions come straight in off the North Sea and the sea dyke gets closed when a storm surge is forecast.66
  15. Brisbane 🇦🇺 AustraliaStorm season · 1. nov. – 30. apr.Queensland's storm season runs November to April.64
  16. Clifden 🇮🇪 IrelandAtlantic gale season · 15. okt. – 15. mar. (normalt)Named storms come in off the ocean with nothing between here and Newfoundland to slow them.61
  17. Tórshavn Faroe IslandsAtlantic gale season · 1. okt. – 31. mar. (normalt)Autumn and winter lows cancel the inter-island ferries, the helicopter and the flights into Vagar, sometimes for two days together.60
  18. Svolvær 🇳🇴 NorwayWinter gales · 15. okt. – 15. mar. (normalt)Atlantic lows shut the mountain passes on the E10 and cancel the small-plane flights into Svolvaer for a day at a time.42

Det sker rundt om i verden i marts →

Stormsæson i april

  1. Atlanta 🇺🇸 United StatesSpring severe-storm season · 1. mar. – 15. maj (normalt)North Georgia's tornado and hail season runs through spring, and the warnings here come overnight as often as in the afternoon.90
  2. Dallas 🇺🇸 United StatesSevere storm season · 1. apr. – 15. jun.North Texas sits at the southern end of tornado alley and April to early June is when the supercells come through, usually late afternoon.88
  3. Memphis 🇺🇸 United StatesSpring storm season · 15. mar. – 31. maj (normalt)Late winter and spring bring the line squalls that flood the streets and take the power out for days, and the Mississippi runs its highest in the same weeks.85
  4. Brisbane 🇦🇺 AustraliaStorm season · 1. nov. – 30. apr.Queensland's storm season runs November to April.84
  5. Austin 🇺🇸 United StatesFlash Flood Alley · 15. apr. – 15. jun. (normalt)Hill Country limestone sheds rain instead of soaking it up, and a spring storm can put the low water crossings under in minutes.84
  6. Kansas City 🇺🇸 United StatesSpring storm season · 15. mar. – 15. jun. (normalt)The wettest and stormiest stretch of the year, with hail, tornado warnings and flash flooding on the creeks.84
  7. Nashville 🇺🇸 United StatesSpring storm season · 15. mar. – 20. maj (normalt)Middle Tennessee gets its severe weather in spring: squall lines, tornado warnings and the flooding that put downtown under water in 2010.82
  8. Hervey Bay 🇦🇺 AustraliaStorm season · 1. nov. – 30. apr.Queensland's storm season runs November to April, and this stretch of coast sees the tail of systems that cross further north as much as it sees cyclones of its own.82
  9. St. Louis 🇺🇸 United StatesSevere storm season · 15. mar. – 15. jun. (normalt)Spring is when the warm Gulf air meets the cold front over the Mississippi valley, and the region sits at the eastern edge of tornado country.80
  10. Indianapolis 🇺🇸 United StatesSpring storm season · 1. apr. – 30. jun. (normalt)Central Indiana's severe weather builds through spring and peaks in May and June: squall lines, hail and tornado warnings that can halt practice at the Speedway.74
  11. Kolkata 🇮🇳 IndiaKalbaisakhi storm season · 20. mar. – 20. maj (normalt)Late-afternoon squall lines come out of the northwest through the hot months, drop the temperature in minutes and take trees and hoardings down with them.59

Det sker rundt om i verden i april →

Stormsæson i maj

  1. Nashville 🇺🇸 United StatesSpring storm season · 15. mar. – 20. maj (normalt)Middle Tennessee gets its severe weather in spring: squall lines, tornado warnings and the flooding that put downtown under water in 2010.88
  2. Kansas City 🇺🇸 United StatesSpring storm season · 15. mar. – 15. jun. (normalt)The wettest and stormiest stretch of the year, with hail, tornado warnings and flash flooding on the creeks.88
  3. Indianapolis 🇺🇸 United StatesSpring storm season · 1. apr. – 30. jun. (normalt)Central Indiana's severe weather builds through spring and peaks in May and June: squall lines, hail and tornado warnings that can halt practice at the Speedway.88
  4. St. Louis 🇺🇸 United StatesSevere storm season · 15. mar. – 15. jun. (normalt)Spring is when the warm Gulf air meets the cold front over the Mississippi valley, and the region sits at the eastern edge of tornado country.87
  5. Atlanta 🇺🇸 United StatesSpring severe-storm season · 1. mar. – 15. maj (normalt)North Georgia's tornado and hail season runs through spring, and the warnings here come overnight as often as in the afternoon.84
  6. Memphis 🇺🇸 United StatesSpring storm season · 15. mar. – 31. maj (normalt)Late winter and spring bring the line squalls that flood the streets and take the power out for days, and the Mississippi runs its highest in the same weeks.83
  7. Valparaíso 🇨🇱 ChileWinter storms and heavy swell · 15. maj – 31. aug. (normalt)Frontal systems bring downpours that flood the lower streets and swells that batter the seafront.82
  8. Dallas 🇺🇸 United StatesSevere storm season · 1. apr. – 15. jun.North Texas sits at the southern end of tornado alley and April to early June is when the supercells come through, usually late afternoon.75
  9. Austin 🇺🇸 United StatesFlash Flood Alley · 15. apr. – 15. jun. (normalt)Hill Country limestone sheds rain instead of soaking it up, and a spring storm can put the low water crossings under in minutes.69
  10. Kolkata 🇮🇳 IndiaKalbaisakhi storm season · 20. mar. – 20. maj (normalt)Late-afternoon squall lines come out of the northwest through the hot months, drop the temperature in minutes and take trees and hoardings down with them.52

Det sker rundt om i verden i maj →

Stormsæson i juni

  1. Indianapolis 🇺🇸 United StatesSpring storm season · 1. apr. – 30. jun. (normalt)Central Indiana's severe weather builds through spring and peaks in May and June: squall lines, hail and tornado warnings that can halt practice at the Speedway.79
  2. St. Louis 🇺🇸 United StatesSevere storm season · 15. mar. – 15. jun. (normalt)Spring is when the warm Gulf air meets the cold front over the Mississippi valley, and the region sits at the eastern edge of tornado country.76
  3. Kansas City 🇺🇸 United StatesSpring storm season · 15. mar. – 15. jun. (normalt)The wettest and stormiest stretch of the year, with hail, tornado warnings and flash flooding on the creeks.76
  4. Indiana Dunes National Park 🇺🇸 United StatesLake Michigan rip currents · 1. jun. – 31. okt. (normalt)North winds set up structural currents along the piers and breakwaters that drown people here most years, and outside the lifeguarded weeks nobody is watching.75
  5. Valparaíso 🇨🇱 ChileWinter storms and heavy swell · 15. maj – 31. aug. (normalt)Frontal systems bring downpours that flood the lower streets and swells that batter the seafront.74
  6. Dallas 🇺🇸 United StatesSevere storm season · 1. apr. – 15. jun.North Texas sits at the southern end of tornado alley and April to early June is when the supercells come through, usually late afternoon.64
  7. Austin 🇺🇸 United StatesFlash Flood Alley · 15. apr. – 15. jun. (normalt)Hill Country limestone sheds rain instead of soaking it up, and a spring storm can put the low water crossings under in minutes.59
  8. Sarasota 🇺🇸 United StatesAfternoon storm season · 1. jun. – 30. sep.A thunderstorm most afternoons, usually over by six, and this stretch of coast gets more lightning than anywhere else in the country.56

Det sker rundt om i verden i juni →

Stormsæson i juli

  1. Boulder 🇺🇸 United StatesAfternoon thunderstorms · 1. jul. – 31. aug. (normalt)Storms build over the Divide most afternoons and reach the foothills between one and four, with lightning that kills hikers on exposed ridges every few years.84
  2. Denver 🇺🇸 United StatesAfternoon monsoon storms · 5. jul. – 5. sep. (normalt)Moisture pulled up from the southwest sets off thunderstorms most afternoons in high summer.81
  3. Rocky Mountain National Park 🇺🇸 United StatesAfternoon lightning season · 5. jul. – 5. sep. (normalt)Storms build over the divide almost every summer afternoon and the tundra is the highest ground for miles with no shelter on it.79
  4. Great Basin National Park 🇺🇸 United StatesAfternoon storms on Wheeler Peak · 1. jul. – 10. sep. (normalt)Fierce afternoon thunderstorms are common in summer, most of all in July and August, and the summit trail runs above treeline; start at dawn and be off the exposed ridge by midday.78
  5. Aspen 🇺🇸 United StatesAfternoon monsoon storms · 5. jul. – 5. sep. (normalt)Midsummer pulls moisture up the Rockies and builds thunderheads over the peaks most afternoons.77
  6. Valparaíso 🇨🇱 ChileWinter storms and heavy swell · 15. maj – 31. aug. (normalt)Frontal systems bring downpours that flood the lower streets and swells that batter the seafront.77
  7. Bryce Canyon National Park 🇺🇸 United StatesMonsoon afternoon storms · 10. jul. – 10. sep. (normalt)Thunderstorms build over the plateau most summer afternoons and the rim is the highest thing for miles.76
  8. Great Sand Dunes National Park 🇺🇸 United StatesAfternoon lightning on the dunes · 1. jul. – 31. aug. (normalt)You are the tallest thing standing on an open sand field, and monsoon storms build over the Sangre de Cristos most July and August afternoons.75
  9. Mesa Verde National Park 🇺🇸 United StatesSummer monsoon · 5. jul. – 10. sep. (normalt)Afternoon thunderstorms build over the mesa most days from early July.73
  10. Indiana Dunes National Park 🇺🇸 United StatesLake Michigan rip currents · 1. jun. – 31. okt. (normalt)North winds set up structural currents along the piers and breakwaters that drown people here most years, and outside the lifeguarded weeks nobody is watching.66
  11. Petrified Forest National Park 🇺🇸 United StatesMonsoon thunderstorms · 1. jul. – 15. sep. (normalt)Afternoon storms build fast over the plateau from July, and the badlands offer no shelter from lightning on the trails at Blue Mesa or the Wilderness.62
  12. Sarasota 🇺🇸 United StatesAfternoon storm season · 1. jun. – 30. sep.A thunderstorm most afternoons, usually over by six, and this stretch of coast gets more lightning than anywhere else in the country.54
  13. White Sands National Park 🇺🇸 United StatesMonsoon thunderstorms · 1. jul. – 15. sep. (normalt)Storms build over the Sacramento and San Andres mountains and cross the basin most summer afternoons, and the dunes are the highest thing standing for miles.53

Det sker rundt om i verden i juli →

Stormsæson i august

  1. Boulder 🇺🇸 United StatesAfternoon thunderstorms · 1. jul. – 31. aug. (normalt)Storms build over the Divide most afternoons and reach the foothills between one and four, with lightning that kills hikers on exposed ridges every few years.87
  2. Denver 🇺🇸 United StatesAfternoon monsoon storms · 5. jul. – 5. sep. (normalt)Moisture pulled up from the southwest sets off thunderstorms most afternoons in high summer.84
  3. Aspen 🇺🇸 United StatesAfternoon monsoon storms · 5. jul. – 5. sep. (normalt)Midsummer pulls moisture up the Rockies and builds thunderheads over the peaks most afternoons.80
  4. Valparaíso 🇨🇱 ChileWinter storms and heavy swell · 15. maj – 31. aug. (normalt)Frontal systems bring downpours that flood the lower streets and swells that batter the seafront.80
  5. Great Sand Dunes National Park 🇺🇸 United StatesAfternoon lightning on the dunes · 1. jul. – 31. aug. (normalt)You are the tallest thing standing on an open sand field, and monsoon storms build over the Sangre de Cristos most July and August afternoons.79
  6. Bryce Canyon National Park 🇺🇸 United StatesMonsoon afternoon storms · 10. jul. – 10. sep. (normalt)Thunderstorms build over the plateau most summer afternoons and the rim is the highest thing for miles.78
  7. Rocky Mountain National Park 🇺🇸 United StatesAfternoon lightning season · 5. jul. – 5. sep. (normalt)Storms build over the divide almost every summer afternoon and the tundra is the highest ground for miles with no shelter on it.77
  8. Mesa Verde National Park 🇺🇸 United StatesSummer monsoon · 5. jul. – 10. sep. (normalt)Afternoon thunderstorms build over the mesa most days from early July.77
  9. Great Basin National Park 🇺🇸 United StatesAfternoon storms on Wheeler Peak · 1. jul. – 10. sep. (normalt)Fierce afternoon thunderstorms are common in summer, most of all in July and August, and the summit trail runs above treeline; start at dawn and be off the exposed ridge by midday.75
  10. Petrified Forest National Park 🇺🇸 United StatesMonsoon thunderstorms · 1. jul. – 15. sep. (normalt)Afternoon storms build fast over the plateau from July, and the badlands offer no shelter from lightning on the trails at Blue Mesa or the Wilderness.71
  11. Indiana Dunes National Park 🇺🇸 United StatesLake Michigan rip currents · 1. jun. – 31. okt. (normalt)North winds set up structural currents along the piers and breakwaters that drown people here most years, and outside the lifeguarded weeks nobody is watching.69
  12. White Sands National Park 🇺🇸 United StatesMonsoon thunderstorms · 1. jul. – 15. sep. (normalt)Storms build over the Sacramento and San Andres mountains and cross the basin most summer afternoons, and the dunes are the highest thing standing for miles.61
  13. Sarasota 🇺🇸 United StatesAfternoon storm season · 1. jun. – 30. sep.A thunderstorm most afternoons, usually over by six, and this stretch of coast gets more lightning than anywhere else in the country.47

Det sker rundt om i verden i august →

Stormsæson i september

  1. Denver 🇺🇸 United StatesAfternoon monsoon storms · 5. jul. – 5. sep. (normalt)Moisture pulled up from the southwest sets off thunderstorms most afternoons in high summer.90
  2. Mesa Verde National Park 🇺🇸 United StatesSummer monsoon · 5. jul. – 10. sep. (normalt)Afternoon thunderstorms build over the mesa most days from early July.81
  3. Indiana Dunes National Park 🇺🇸 United StatesLake Michigan rip currents · 1. jun. – 31. okt. (normalt)North winds set up structural currents along the piers and breakwaters that drown people here most years, and outside the lifeguarded weeks nobody is watching.78
  4. Petrified Forest National Park 🇺🇸 United StatesMonsoon thunderstorms · 1. jul. – 15. sep. (normalt)Afternoon storms build fast over the plateau from July, and the badlands offer no shelter from lightning on the trails at Blue Mesa or the Wilderness.75
  5. Aspen 🇺🇸 United StatesAfternoon monsoon storms · 5. jul. – 5. sep. (normalt)Midsummer pulls moisture up the Rockies and builds thunderheads over the peaks most afternoons.74
  6. Bryce Canyon National Park 🇺🇸 United StatesMonsoon afternoon storms · 10. jul. – 10. sep. (normalt)Thunderstorms build over the plateau most summer afternoons and the rim is the highest thing for miles.74
  7. Rocky Mountain National Park 🇺🇸 United StatesAfternoon lightning season · 5. jul. – 5. sep. (normalt)Storms build over the divide almost every summer afternoon and the tundra is the highest ground for miles with no shelter on it.71
  8. White Sands National Park 🇺🇸 United StatesMonsoon thunderstorms · 1. jul. – 15. sep. (normalt)Storms build over the Sacramento and San Andres mountains and cross the basin most summer afternoons, and the dunes are the highest thing standing for miles.71
  9. Great Basin National Park 🇺🇸 United StatesAfternoon storms on Wheeler Peak · 1. jul. – 10. sep. (normalt)Fierce afternoon thunderstorms are common in summer, most of all in July and August, and the summit trail runs above treeline; start at dawn and be off the exposed ridge by midday.69
  10. Sarasota 🇺🇸 United StatesAfternoon storm season · 1. jun. – 30. sep.A thunderstorm most afternoons, usually over by six, and this stretch of coast gets more lightning than anywhere else in the country.58

Det sker rundt om i verden i september →

Stormsæson i oktober

  1. Mbabane 🇸🇿 EswatiniThunderstorm and lightning season · 1. okt. – 31. mar. (normalt)Afternoon thunderstorms over the highveld are frequent in summer, and Eswatini has recorded one of the highest lightning death rates anywhere.88
  2. Ezulwini Valley 🇸🇿 EswatiniThunderstorm and lightning season · 15. okt. – 31. mar. (normalt)Eswatini has recorded one of the world's highest lightning death rates, almost all in afternoon summer storms.87
  3. Johannesburg 🇿🇦 South AfricaHighveld afternoon storms · 15. okt. – 15. mar. (normalt)Storms build over the reef most summer afternoons: hail, lightning and intersections under water for an hour.86
  4. Pretoria 🇿🇦 South AfricaAfternoon thunderstorms · 15. okt. – 15. mar. (normalt)Storms come off the Magaliesberg most summer afternoons: hail, lightning and half an hour of water the stormwater drains cannot take.86
  5. Mlilwane Wildlife Sanctuary 🇸🇿 EswatiniSummer thunderstorm season · 15. okt. – 28. feb. (normalt)Most of the year's rain falls in violent afternoon thunderstorms with frequent lightning.75
  6. Ostend 🇧🇪 BelgiumNorth Sea gales · 15. okt. – 15. mar.Autumn and winter depressions come straight in off the North Sea and the sea dyke gets closed when a storm surge is forecast.70
  7. Dingle 🇮🇪 IrelandAtlantic storm season · 15. okt. – 28. feb. (normalt)Named lows come in off the ocean from mid-autumn and the peninsula takes them first.68
  8. Indiana Dunes National Park 🇺🇸 United StatesLake Michigan rip currents · 1. jun. – 31. okt. (normalt)North winds set up structural currents along the piers and breakwaters that drown people here most years, and outside the lifeguarded weeks nobody is watching.62
  9. Tórshavn Faroe IslandsAtlantic gale season · 1. okt. – 31. mar. (normalt)Autumn and winter lows cancel the inter-island ferries, the helicopter and the flights into Vagar, sometimes for two days together.62
  10. Clifden 🇮🇪 IrelandAtlantic gale season · 15. okt. – 15. mar. (normalt)Named storms come in off the ocean with nothing between here and Newfoundland to slow them.59
  11. Ålesund 🇳🇴 NorwayAtlantic gale season · 15. okt. – 28. feb. (normalt)The exposed coast takes named Atlantic lows from mid-autumn, and the first thing they cancel is the ferry and the fjord sailings rather than the flights.48
  12. Svolvær 🇳🇴 NorwayWinter gales · 15. okt. – 15. mar. (normalt)Atlantic lows shut the mountain passes on the E10 and cancel the small-plane flights into Svolvaer for a day at a time.47

Det sker rundt om i verden i oktober →

Stormsæson i november

  1. Ezulwini Valley 🇸🇿 EswatiniThunderstorm and lightning season · 15. okt. – 31. mar. (normalt)Eswatini has recorded one of the world's highest lightning death rates, almost all in afternoon summer storms.86
  2. Córdoba 🇦🇷 ArgentinaHail and summer storms · 1. nov. – 28. feb. (normalt)The sierras west of the city build some of the most violent storms anywhere: hail big enough to write off parked cars, and flash floods in the valley rivers that catch swimmers downstream of dry-looking weather.85
  3. Mbabane 🇸🇿 EswatiniThunderstorm and lightning season · 1. okt. – 31. mar. (normalt)Afternoon thunderstorms over the highveld are frequent in summer, and Eswatini has recorded one of the highest lightning death rates anywhere.84
  4. Johannesburg 🇿🇦 South AfricaHighveld afternoon storms · 15. okt. – 15. mar. (normalt)Storms build over the reef most summer afternoons: hail, lightning and intersections under water for an hour.83
  5. Drakensberg 🇿🇦 South AfricaAfternoon thunderstorms · 1. nov. – 28. feb. (normalt)Storms build over the escarpment most summer afternoons, with lightning on the tops, hail and water coming down the gullies within minutes.83
  6. Pretoria 🇿🇦 South AfricaAfternoon thunderstorms · 15. okt. – 15. mar. (normalt)Storms come off the Magaliesberg most summer afternoons: hail, lightning and half an hour of water the stormwater drains cannot take.82
  7. Durban 🇿🇦 South AfricaSummer storm and flood season · 1. nov. – 31. mar. (normalt)KwaZulu-Natal's rain comes as violent afternoon storms and, every few years, as the kind of flooding that takes out roads and closes the beaches to swimming for days on hygiene grounds.81
  8. Costa da Caparica 🇵🇹 PortugalWinter storms and erosion · 1. nov. – 15. mar.Atlantic depressions push straight onto this coast and take the sand with them; sections of the boardwalk and the beach access stairs are regularly closed for repair after a bad week.79
  9. Brisbane 🇦🇺 AustraliaStorm season · 1. nov. – 30. apr.Queensland's storm season runs November to April.78
  10. Hervey Bay 🇦🇺 AustraliaStorm season · 1. nov. – 30. apr.Queensland's storm season runs November to April, and this stretch of coast sees the tail of systems that cross further north as much as it sees cyclones of its own.78
  11. Mlilwane Wildlife Sanctuary 🇸🇿 EswatiniSummer thunderstorm season · 15. okt. – 28. feb. (normalt)Most of the year's rain falls in violent afternoon thunderstorms with frequent lightning.70
  12. La Rochelle 🇫🇷 FranceAtlantic storm season · 1. nov. – 28. feb. (normalt)Depressions come in off the Atlantic all winter, and on a high spring tide the sea gets over the sea wall on the Vieux Port.67
  13. Dingle 🇮🇪 IrelandAtlantic storm season · 15. okt. – 28. feb. (normalt)Named lows come in off the ocean from mid-autumn and the peninsula takes them first.59
  14. Seattle 🇺🇸 United StatesWinter storms and pass closures · 1. nov. – 28. feb. (normalt)Atmospheric rivers bring wind, flooding and power cuts through the dark months, and Snoqualmie and Stevens close for hours at a time for avalanche control.57
  15. Ostend 🇧🇪 BelgiumNorth Sea gales · 15. okt. – 15. mar.Autumn and winter depressions come straight in off the North Sea and the sea dyke gets closed when a storm surge is forecast.57
  16. Tórshavn Faroe IslandsAtlantic gale season · 1. okt. – 31. mar. (normalt)Autumn and winter lows cancel the inter-island ferries, the helicopter and the flights into Vagar, sometimes for two days together.52
  17. Clifden 🇮🇪 IrelandAtlantic gale season · 15. okt. – 15. mar. (normalt)Named storms come in off the ocean with nothing between here and Newfoundland to slow them.52
  18. Ålesund 🇳🇴 NorwayAtlantic gale season · 15. okt. – 28. feb. (normalt)The exposed coast takes named Atlantic lows from mid-autumn, and the first thing they cancel is the ferry and the fjord sailings rather than the flights.38
  19. Svolvær 🇳🇴 NorwayWinter gales · 15. okt. – 15. mar. (normalt)Atlantic lows shut the mountain passes on the E10 and cancel the small-plane flights into Svolvaer for a day at a time.29

Det sker rundt om i verden i november →

Stormsæson i december

  1. Ezulwini Valley 🇸🇿 EswatiniThunderstorm and lightning season · 15. okt. – 31. mar. (normalt)Eswatini has recorded one of the world's highest lightning death rates, almost all in afternoon summer storms.82
  2. Johannesburg 🇿🇦 South AfricaHighveld afternoon storms · 15. okt. – 15. mar. (normalt)Storms build over the reef most summer afternoons: hail, lightning and intersections under water for an hour.80
  3. Córdoba 🇦🇷 ArgentinaHail and summer storms · 1. nov. – 28. feb. (normalt)The sierras west of the city build some of the most violent storms anywhere: hail big enough to write off parked cars, and flash floods in the valley rivers that catch swimmers downstream of dry-looking weather.80
  4. Pretoria 🇿🇦 South AfricaAfternoon thunderstorms · 15. okt. – 15. mar. (normalt)Storms come off the Magaliesberg most summer afternoons: hail, lightning and half an hour of water the stormwater drains cannot take.78
  5. Costa da Caparica 🇵🇹 PortugalWinter storms and erosion · 1. nov. – 15. mar.Atlantic depressions push straight onto this coast and take the sand with them; sections of the boardwalk and the beach access stairs are regularly closed for repair after a bad week.76
  6. Mbabane 🇸🇿 EswatiniThunderstorm and lightning season · 1. okt. – 31. mar. (normalt)Afternoon thunderstorms over the highveld are frequent in summer, and Eswatini has recorded one of the highest lightning death rates anywhere.76
  7. Drakensberg 🇿🇦 South AfricaAfternoon thunderstorms · 1. nov. – 28. feb. (normalt)Storms build over the escarpment most summer afternoons, with lightning on the tops, hail and water coming down the gullies within minutes.74
  8. Durban 🇿🇦 South AfricaSummer storm and flood season · 1. nov. – 31. mar. (normalt)KwaZulu-Natal's rain comes as violent afternoon storms and, every few years, as the kind of flooding that takes out roads and closes the beaches to swimming for days on hygiene grounds.73
  9. Hervey Bay 🇦🇺 AustraliaStorm season · 1. nov. – 30. apr.Queensland's storm season runs November to April, and this stretch of coast sees the tail of systems that cross further north as much as it sees cyclones of its own.72
  10. Brisbane 🇦🇺 AustraliaStorm season · 1. nov. – 30. apr.Queensland's storm season runs November to April.71
  11. Mlilwane Wildlife Sanctuary 🇸🇿 EswatiniSummer thunderstorm season · 15. okt. – 28. feb. (normalt)Most of the year's rain falls in violent afternoon thunderstorms with frequent lightning.62
  12. La Rochelle 🇫🇷 FranceAtlantic storm season · 1. nov. – 28. feb. (normalt)Depressions come in off the Atlantic all winter, and on a high spring tide the sea gets over the sea wall on the Vieux Port.60
  13. Dingle 🇮🇪 IrelandAtlantic storm season · 15. okt. – 28. feb. (normalt)Named lows come in off the ocean from mid-autumn and the peninsula takes them first.53
  14. Ostend 🇧🇪 BelgiumNorth Sea gales · 15. okt. – 15. mar.Autumn and winter depressions come straight in off the North Sea and the sea dyke gets closed when a storm surge is forecast.51
  15. Seattle 🇺🇸 United StatesWinter storms and pass closures · 1. nov. – 28. feb. (normalt)Atmospheric rivers bring wind, flooding and power cuts through the dark months, and Snoqualmie and Stevens close for hours at a time for avalanche control.49
  16. Clifden 🇮🇪 IrelandAtlantic gale season · 15. okt. – 15. mar. (normalt)Named storms come in off the ocean with nothing between here and Newfoundland to slow them.46
  17. Tórshavn Faroe IslandsAtlantic gale season · 1. okt. – 31. mar. (normalt)Autumn and winter lows cancel the inter-island ferries, the helicopter and the flights into Vagar, sometimes for two days together.43
  18. Ålesund 🇳🇴 NorwayAtlantic gale season · 15. okt. – 28. feb. (normalt)The exposed coast takes named Atlantic lows from mid-autumn, and the first thing they cancel is the ferry and the fjord sailings rather than the flights.28
  19. Svolvær 🇳🇴 NorwayWinter gales · 15. okt. – 15. mar. (normalt)Atlantic lows shut the mountain passes on the E10 and cancel the small-plane flights into Svolvaer for a day at a time.24

Det sker rundt om i verden i december →

Stormsæson, måned for måned rundt om i verden | SeasonMap