High winds, slashing rain and heavy snow will whip areas of Northwestern Europe from the United Kingdom to Scandinavia on Thursday and Friday.
Travel by road, rail, sea and air will be subject to delay or cancelation.
The worst of the storm will target northern and central UK, along with the nearby Irish Republic, on Thursday into Friday night.
Wind speeds of 40 to 60 mph (about 65-95 km/h) will be reached in many areas, and winds may top 75 mph (120 km/h) at sea and over hills.
Heavy, wind-blown snow will cover higher ground in Scotland, where open areas of the Highlands could get a blizzard. Snow will also lay over hills of Ireland to northern England.
Thursday night and Friday, the storm center will shift east to Scandinavia. At this time, the highest winds on land will target coastal areas of Denmark, southern Sweden, northern Germany and Netherlands.
Heavy snow will blanket much of eastern Norway with upwards of 1 foot (30 cm) burying Oslo. Heavy snow will reach into western Sweden.
As July draws to a close, a storm system swinging up from the Deep South will bring downpours to the northeastern U.S. and break the back of an extended heat wave.
Repeating and slow-moving storms will raise the risk of flash flooding and damaging winds over northern and central High Plains into Thursday night.
The F1 season continues this weekend with the German Grand Prix in Hockenheim with disruptive showers and thunderstorms in the forecast.
Highs will run between 10 and 15 degrees Fahrenheit above average across much of the western United States into the upcoming weekend.
Repeating downpours will raise the risk for flash flooding along the Gulf coast and lower Mississippi Valley through the middle days of the week.
The heat felt across the United Kingdom during the middle of July has faded and is not expected to return through at least the first week of August.
Marquette, Il (1988)
99 degrees for a date record.
Hurricane Bertha formed 450 miles east of Jacksonville, FL. Maximum sustained winds of 75 mph with gusts to 90 mph.
Western Pacific (1990)
Typhoon Steve east of Iwo Jimo. Peak winds of 125 mph sustained gusts to 155 mph.