Severe Storm Potential Mainly Wisconsin. NWS Doppler radar at 5:01 PM shows heavy showers and T-storms over southeastern Minnesota, but the greatest severe risk (hail and damaging straight-line winds) is from Durand to Eau Claire to Tomah, Wisconsin, deeper into the hot, sticky, 70-degree dew point air. Radar shows light showers over the southeast metro, but I expect a gradual clearing trend metro-wide by 7 PM or so. Here is the latest warning (Wisconsin):
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
453 PM CDT WED AUG 21 2013
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL DUNN COUNTY IN WEST CENTRAL WISCONSIN...
* UNTIL 530 PM CDT
* AT 449 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES WEST OF
MENOMONIE...AND MOVING EAST AT 40 MPH.
HAZARD...HALF DOLLAR SIZE HAIL AND 60 MPH WIND GUSTS.
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
ROOFS...SIDING AND TREES.
* LOCATIONS IMPACTED INCLUDE...
MENOMONIE...MENOMONIE AP...HOFFMAN HILLS REC AREA AND ELK MOUND.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
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Hard to believe it rained again last night with another fine display of thunder and lightning. At least we were spared severe storms this time around. Winds shifting to the west/northwest dry us out today with cooling temperatures into Friday (the nicest day in sight). You may need a Plan B for Saturday; with any luck we salvage a better day on Sunday. No storms with names - which is more than residents of Florida and the Gulf Coast can say. All eyes are on "Invest 99-L", which may ripen into "Hermine" in the days to come.
We've lost 2 1/2 hours of daylight and about 4 degrees off our average high temperature; the sun now as high in the sky as it was in mid-April. No hot fronts are brewing, but today will feel like July; more 80s likely next week. The arrival of cooler air sets off a few T-storms late tonight, but Thursday there will be no doubt in your mind that the atmosphere is shifting gears. More downpours by Sunday? Well, at least the pattern is consistent...
After a less-than-optimal Saturday yesterday restored my faith in a Minnesota August. At the risk of editorializing, it was perfect. A gusty south wind tugs the mercury well into the 80s today and Tuesday; another squall line of heavy T-storms late Tuesday night into early Wednesday marks the leading edge of cooler, drier air. A few T-showers may sprout again by the weekend. I know, what a shock.
Good news on the weather front: today will be even nicer than yesterday! At least we salvage one day of the weekend. With any luck we can dry out a little as we head into the Minnesota State Fair and Labor Day. The maps still look more like June than August.
If you liked Friday you will adore today with gusty northwest winds, off and on showers and temperatures stranded in the 60s. Not a great lake day, but it won't slow too many of us down. Sunday looks brighter, drier and milder after a chilly start. No, it's not quite time to dig out the jackets, not yet. Meanwhile the GFS is pulling a big hurricane into the southeastern USA by late August. We'll see.