An unusual, midsummer, strengthening storm system will cause soaking rain, howling winds and severe thunderstorms to target central Europe to start the weekend.
The storm will initially push rain across southern England, including London, and northwestern France on Friday. A couple of thunderstorms will also rumble in northwestern France, and it is not out of the question for one to turn severe.
While the soaking rain shifts to the Netherlands, Denmark and southern Scandinavia on Saturday, more severe impacts will unfold on Saturday from Belgium and the Netherlands to Poland and Slovakia as the storm strengthens.
"Given that this [type of strengthening storm system] normally occurs in fall or winter as opposed to midsummer, some very anomalous and dangerous weather is possible in parts of Europe on Saturday," stated AccuWeather Meteorologist Anthony Sagliani.
Winds on the backside of the intensifying storm will howl from Belgium and the Netherlands to northeastern Germany on Saturday before spreading to Denmark and northwestern Germany at night. This includes Brussels, Amsterdam, Hamburg and Berlin.
Wind gusts will average 65 to 95 kph (40 to 60 mph) with the strongest winds whipping toward and along the coast. "Some sporadic damage and power outages are possible," added Sagliani.
Damage also threatens to unfold farther east across Poland, the Czech Republic, Slovakia and far northeastern Austria as severe thunderstorms erupt Saturday afternoon.
"Some thunderstorms will produce damaging straight-line wind gusts up to 95 kph (60 mph), large hail up to the size of golf balls or hen eggs and even a few tornadoes," continued Sagliani.
Warsaw, Wroclaw, Brno, Vienna, Bratislava and Kosice are among the communities facing the severe weather danger.
The rain falling northwest of the severe weather around the Netherlands, Denmark and southern Scandinavia on Saturday is not expected to produce widespread flooding, but any downpours will create hazards for motorists by reducing visibility and heightening the risk of vehicles hydroplaning when traveling at highway speeds.
In between the severe weather and rain, spotty showers will dot central France and the rest of Germany on Saturday as more thunderstorms rattle the Alps.
Drier weather will briefly return to central Europe on Sunday as the threat for severe thunderstorms shifts to eastern Belarus and neighboring parts of Russia.