The Swedish Meteorological and Hydrological Institute (SMHI) has issued a yellow warning for thunderstorms from Stockholm to Haparanda, with potential for heavy lightning, rain, hail, and strong winds. The warning extends from Thursday afternoon into Friday, affecting large parts of central and northern Sweden. Residents are advised to stay indoors and avoid high structures during the storm.
Severe Thunderstorm Warning Issued Across Sweden
Severe Thunderstorm Warning Issued Across Sweden
Lightning and thunder. The Swedish Meteorological and Hydrological Institute (SMHI) has issued a yellow warning for thunderstorms from Stockholm to Haparanda on Friday, with warnings already in place for central Norrland on Thursday. – The air is unstable. There will be thunder and lightning, says Johan Groth, meteorologist at Stormgeo.
A yellow warning is in effect from 4 PM on Thursday until 1 AM, covering parts of Jämtland County, northern Västernorrland, large parts of Västerbotten County, and eastern Norrbotten County.
The thunderstorms could be very intense in some areas, with heavy lightning and rain. There is also a risk of hailstorms and strong winds.
Expanding on Friday
On Friday, the warning extends southward, with lightning expected in large parts of Svealand as the storm reaches the Stockholm area by Friday evening. However, the thunderstorm could arrive earlier in the day, says meteorologist Johan Groth.
– It's a mass moving up from Skagerrak, and since the air is unstable, there could be thunderstorms early in the day in eastern Svealand tomorrow, he says.
SMHI notes that it's uncertain where the worst thunderstorms will occur, and many places in the warning area may not be affected.
The storm could lead to both flooding and fires, warns SMHI.
At the same time, there will be very strong winds as the storm moves in.
– When the front passes, the wind can suddenly gust. Winds could reach up to 20 or even 25 meters per second, says Johan Groth.
SMHI also advises caution for those outdoors during the storm, recommending staying away from tall objects like trees and poles when lightning strikes.
– Perhaps it's not the best time to play football or swim to an island. Take it easy and maybe read a book, suggests Johan Groth.