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Wisconsin Weather

AUG 9, 2020 | Sunday/Mon AM | Strong T-Storms Possible

LAST UPDATE : AUG 7, 2020

FRI 1:38PM - by Sunday moisture/heat should finally be sufficient for a more direct severe threat over Wisconsin. PLENTY of uncertainty and timing differences / issues. Widespread threat is low but situation still bares watching...the smallest shift in evolution through the weekend could stack the deck by Sunday for someone.

The best trigger...frontal passage timing is slower...centered on Monday morning in energy min reducing overall threat.

It's possible Monday could be another strong tstorm threat day in eastern Wisconsin. SUN could be the focal point of this stormy pattern and dont want to be too aggressive on FRI/SAT.

Due to uncertainty will wait until Saturday sometime for the next update.

Forecast Maps

Thunderstorm Outlooks

Thunderstorms
General
Strong
Severe
Significant

Verification


Storm Details

Hazards
Severe T-Storms
Start
SUN 6:00 AM - Aug 09, 2020
End
MON 6:00 AM - Aug 10, 2020
Confidence Level
Storm Class

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Not a good day. Compounding failures. Got swallowed by heavy rain near Monroe before I could get in final position. Feel sick to my stomach seeing the damage in Iowa. The IEM data warehouse has been down since 11AM so maps are still not updating. Tomorrow is a new day.
significant severe weather situation for northeast IA at the moment with widespread straightline wind gust damage...wind gusts of 70-90MPH. This complex will move near/along the WI/IL border this aft. Additional storm development likely across the rest of southern WI. Eyes on
Storms in Iowa causing wiwx maps crash. Unable to connect to Iowa State server. Definitely a serious weather situation down in Cedar Rapids/Iowa City, IA where the reports, radar, warning information source data is located. Server overload or outage.
short range models all in agreeement
Latest trends suggest severe thunderstorms are likely today. Pushed to SEVERE. Worst near/along WI/IL border. Damaging winds the primary threat. I'll be in the area. Stay safe!
Small cluster of strong to severe t-storms w/ damaging wind gusts pushing through central WI atm. Models suggest weakening east of I39. Another t-storm event likely develops today/this aft for the rest of S WI.
Models trending more aggressive with t-storm activity SAT AM over northern & central WI. Remnants of overnight complex. Timing is poor for severe wx but at least will mention the chance of storms. Gradually weakening during the day.
Small cluster of thunderstorms continues through northern MN, set to head into northwest WI tonight. You can tell by the yellow SVR TSTORM WATCH that more development was expected into the Minneapolis region. Simply hasn't happened to this point and it's looking more likely that the existing storm cluster to head due east into far northern WI. A few damaging wind gusts overnight.

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August 9, 2020

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August 10, 2020

24HR Radar Loop
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Storm Reports

TORNADO & FUNNEL CLOUD (1)
TORNADO
TORNADO
1 WSW STAR LAKE, WI
-
WIND GUSTS (32)
TSTM WND GST
TSTM WND GST
BLACK RIVER FALLS, WI
58 MPH
TSTM WND GST
TSTM WND GST
CAMP DOUGLAS, WI
49 MPH
TSTM WND GST
TSTM WND GST
WAUTOMA, WI
46 MPH
TSTM WND GST
TSTM WND GST
ETTRICK, WI
45 MPH
TSTM WND GST
TSTM WND GST
AMHERST, WI
45 MPH
MARINE TSTM WIND
MARINE TSTM WIND
2 ENE SHOREWOOD, WI
45 MPH
TSTM WND GST
TSTM WND GST
WISCONSIN RAPIDS, WI
43 MPH
MARINE TSTM WIND
MARINE TSTM WIND
DEVILS ISLAND, WI
43 MPH
TSTM WND GST
TSTM WND GST
1 N PORT WING, WI
40 MPH
TSTM WND GST
TSTM WND GST
3 ENE CATARACT, WI
33 MPH
TSTM WND GST
TSTM WND GST
2 NNE FRENCH ISLAND, WI
30 MPH
TSTM WND DMG
TSTM WND DMG
WAUPACA, WI
-
TSTM WND DMG
TSTM WND DMG
PLAINFIELD, WI
-
TSTM WND DMG
TSTM WND DMG
COMO, WI
-
TSTM WND DMG
TSTM WND DMG
1 E WEST ALLIS, WI
-
TSTM WND DMG
TSTM WND DMG
1 NNE MAPLE BLUFF, WI
-
TSTM WND DMG
TSTM WND DMG
1 NW WAUKESHA, WI
-
TSTM WND DMG
TSTM WND DMG
2 SE LAND O LAKES, WI
-
TSTM WND DMG
TSTM WND DMG
2 SSE WAUKESHA, WI
-
TSTM WND DMG
TSTM WND DMG
2 W CEDAR GROVE, WI
-
TSTM WND DMG
TSTM WND DMG
2 WSW WAUKESHA, WI
-
TSTM WND DMG
TSTM WND DMG
11 E GORDON, WI
-
TSTM WND DMG
TSTM WND DMG
12 W DRUMMOND, WI
-
TSTM WND DMG
TSTM WND DMG
1 WNW LAKE NEBAGAMON, WI
-
TSTM WND DMG
TSTM WND DMG
1 WNW STAR LAKE, WI
-
TSTM WND DMG
TSTM WND DMG
3 W WILD ROSE, WI
-
TSTM WND DMG
TSTM WND DMG
2 N FRIENDSHIP, WI
-
TSTM WND DMG
TSTM WND DMG
2 N OCONOMOWOC, WI
-
TSTM WND DMG
TSTM WND DMG
4 WNW FORT ATKINSON, WI
-
TSTM WND DMG
TSTM WND DMG
5 N BABCOCK, WI
-
TSTM WND DMG
TSTM WND DMG
5 SW NEW ROME, WI
-
TSTM WND DMG
TSTM WND DMG
7 SSE WHITEWATER, WI
-
LARGE HAIL (2)
HAIL
HAIL
1 ENE CEDAR GROVE, WI
0.7"
HAIL
HAIL
TUNNEL CITY, WI
0.5"
HEAVY RAIN (10)
HEAVY RAIN
HEAVY RAIN
POPLAR, WI
3.5"
HEAVY RAIN
HEAVY RAIN
LAKE NEBAGAMON, WI
3.0"
HEAVY RAIN
HEAVY RAIN
1 NW TREGO, WI
1.84"
HEAVY RAIN
HEAVY RAIN
1 NE PRAIRIE DU CHIEN, WI
1.7"
HEAVY RAIN
HEAVY RAIN
BLUEBERRY, WI
1.56"
HEAVY RAIN
HEAVY RAIN
4 S SUPERIOR, WI
1.4"
HEAVY RAIN
HEAVY RAIN
1 W PLATTEVILLE, WI
1.35"
HEAVY RAIN
HEAVY RAIN
6 W GOODRICH, WI
1.13"
HEAVY RAIN
HEAVY RAIN
OULU, WI
0.92"
HEAVY RAIN
HEAVY RAIN
EASTMAN, WI
0.09"
OTHER (1)
FLOOD
FLOOD
CEDAR GROVE, WI
-