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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A fairly vigorous area of low pressure looks to spin up swarms of showers and storms late Monday with thundery downpours possible in spots through Tuesday. Cool exhaust on the backside of this storm brings us into the 60s for highs by the end of the week. Check the blog for more details. -Todd Nelson
The heaviest, steadiest rains from Saturday, push east today. Wrap around clouds and a few stray PM T-showers can't be ruled out this afternoon, but it won't be a washout. Tomorrow looks even nicer with more sun and warmer temps. In fact, Memorial Day looks like the nicest day of the holiday weekend. Enjoy! Check the blog for more details. -Todd Nelson
Unfortunately, we're off to a soggy start this holiday weekend. Have a plan b today as scads of showers and storms swirl through the Upper Midwest. The good news is that the weekend won't be a washout, weather improves a little tomorrow with only a few stray PM T-storms and perhaps even a little better on Memorial Day. Check the blog for more. -Todd Nelson
Studying the models I still think Sunday and Monday will be the best outdoor-days of the holiday weekend, with enough hazy sun for 80 degrees. Showers and T-storms will be heaviest and most widespread today and Saturday as a weak, slow-moving trough of low pressure pushes across the Plains. No all-day washouts, but you would be well-advised to have a Plan B later Friday and Saturday. Check the blog for more details. -Todd Nelson
Skies brighten Thursday, a brief break before the next swirl of showers and T-storms arrives Friday into Saturday. Have a Plan B (indoors) for Saturday, but models hint at some sun on Sunday with low 80s. ECMWF guidance brings in more T-storms on Memorial Day. Check the blog for more details. -Todd Nelson