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Wisconsin Weather

AUG 10, 2020 | Iowa/Northern IL Derecho

LAST UPDATE : AUG 11, 2020

MON 10:41AM - Upgraded to SEVERE across southern WI.

MON 7:10 AM - Right now a cluster of strong to severe cells are moving through central Wisconsin. Damaging wind gusts are the primary threat this AM. Not sure how far east this thing will make it.

Thermodynamically driven thunderstorm event likely to develop in southern Wisconsin TODAY. Wind shear poor, instability good thus storms will line up quickly and march east. While the impacted area may be widespread, I think overall threat will be on par with what we saw through-out the weekend. Strong storms, perhaps some severe-criteria cells. I'm watching near-to/along the WI/IL border but mid afternoon where the TARGET is, models seem to hit that area the hardest.

I pulled the STRONG zone into Door County (far eastern NE WI) because didn't see much activity there in last 24 hours. Airmass is probably supportive of a few thunderstorms. Central WI is another spot that was missed yesterday and probably ready for some storms...getting some right now.

Forecast Maps

Thunderstorm Outlooks

Thunderstorms
General
Strong
Severe
Significant

Verification


Storm Details

Hazards
Severe T-Storms, Strong T-Storms
Start
MON 6:00 AM - Aug 10, 2020
End
MON 8:00 PM - Aug 10, 2020
Confidence Level
Storm Class

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Trying to make 7-day forecasts more enjoyable to create & view. Working on the next evolution of the 7-day forecast editor tool. First attempt at integrating the storm events system (test storm marked by red shading) which operates on an HOURLY basis. Thought this might be a nice way to differentiate from other wx sources. This is on the admin side and planning to copy it over to the HOME page. I also want to integrate with automated/local 7-day forecast system graphics...specifically the .jpeg images...on a regional basis where if you're county is not targeted for a storm event, the red shading won't appear. Large project. Making progress.
Trending cooler than average in mid-August, precip near average after a wetter start for some
Everything back up & running today at IEM who supplies our map elements. Their servers lost power during the derecho in IA yesterday. This type of outage has never happened before on WIWX. Also caused the SMS system to error on send. Added a new failsafe this AM that will allow SMS to still send even if maps are down.
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.

Archives

August 10, 2020

24HR Radar Loop
24HR Radar Loop
Wind Gusts
Storm Reports

Storm Reports

TORNADO & FUNNEL CLOUD (3)
TORNADO
TORNADO
1 S LAKE GENEVA, WI
-
TORNADO
TORNADO
2 SSW BURTON, WI
-
TORNADO
TORNADO
2 SSW CAMP LAKE, WI
-
WIND GUSTS (52)
TSTM WND GST
TSTM WND GST
PADDOCK LAKE, WI
70 MPH
TSTM WND GST
TSTM WND GST
PATCH GROVE, WI
63 MPH
TSTM WND GST
TSTM WND GST
3 ENE MONROE, WI
62 MPH
TSTM WND GST
TSTM WND GST
LANCASTER, WI
60 MPH
TSTM WND GST
TSTM WND GST
POWERS LAKE, WI
60 MPH
TSTM WND GST
TSTM WND GST
BLOOMINGTON, WI
60 MPH
MARINE TSTM WIND
MARINE TSTM WIND
1 E SHEBOYGAN, WI
60 MPH
TSTM WND GST
TSTM WND GST
BLACK RIVER FALLS, WI
58 MPH
MARINE TSTM WIND
MARINE TSTM WIND
1 NNE KENOSHA, WI
55 MPH
TSTM WND GST
TSTM WND GST
2 SSE GLEN HAVEN, WI
50 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
AMHERST, WI
45 MPH
TSTM WND GST
TSTM WND GST
ETTRICK, WI
45 MPH
TSTM WND GST
TSTM WND GST
WISCONSIN RAPIDS, WI
43 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
2 N FRIENDSHIP, WI
-
TSTM WND DMG
TSTM WND DMG
1 W PLATTEVILLE, WI
-
TSTM WND DMG
TSTM WND DMG
1 WNW KENOSHA, WI
-
TSTM WND DMG
TSTM WND DMG
2 SSW BURTON, WI
-
TSTM WND DMG
TSTM WND DMG
3 W WILD ROSE, WI
-
TSTM WND DMG
TSTM WND DMG
4 N DICKEYVILLE, WI
-
TSTM WND DMG
TSTM WND DMG
4 W AVALON, WI
-
TSTM WND DMG
TSTM WND DMG
2 W BELMONT, WI
-
TSTM WND DMG
TSTM WND DMG
2 WNW ELMWOOD PARK, WI
-
TSTM WND DMG
TSTM WND DMG
2 NNW ELMWOOD PARK, WI
-
TSTM WND DMG
TSTM WND DMG
2 S BURTON, WI
-
TSTM WND DMG
TSTM WND DMG
1 SE CAMP LAKE, WI
-
TSTM WND DMG
TSTM WND DMG
1 SSE LAKE GENEVA, WI
-
TSTM WND DMG
TSTM WND DMG
1 SSW ELMWOOD PARK, WI
-
TSTM WND DMG
TSTM WND DMG
1 N ELMWOOD PARK, WI
-
TSTM WND DMG
TSTM WND DMG
1 E POWERS LAKE, WI
-
TSTM WND DMG
TSTM WND DMG
LAKE GENEVA, WI
-
TSTM WND DMG
TSTM WND DMG
CAMP LAKE, WI
-
TSTM WND DMG
TSTM WND DMG
DARLINGTON, WI
-
TSTM WND DMG
TSTM WND DMG
ELKHORN, WI
-
TSTM WND DMG
TSTM WND DMG
ELMWOOD PARK, WI
-
TSTM WND DMG
TSTM WND DMG
2 SSW CAMP LAKE, WI
-
TSTM WND DMG
TSTM WND DMG
3 ENE BROWNTOWN, WI
-
TSTM WND DMG
TSTM WND DMG
5 N BABCOCK, WI
-
TSTM WND DMG
TSTM WND DMG
5 NNW PLATTEVILLE, WI
-
TSTM WND DMG
TSTM WND DMG
5 SW NEW ROME, WI
-
TSTM WND DMG
TSTM WND DMG
UNION GROVE, WI
-
TSTM WND DMG
TSTM WND DMG
RACINE, WI
-
TSTM WND DMG
TSTM WND DMG
WAUPACA, WI
-
TSTM WND DMG
TSTM WND DMG
MONROE, WI
-
TSTM WND DMG
TSTM WND DMG
NORTH BAY, WI
-
TSTM WND DMG
TSTM WND DMG
PELL LAKE, WI
-
TSTM WND DMG
TSTM WND DMG
PLAINFIELD, WI
-
TSTM WND DMG
TSTM WND DMG
PLATTEVILLE, WI
-
TSTM WND DMG
TSTM WND DMG
POTOSI, WI
-
LARGE HAIL (4)
HAIL
HAIL
PATCH GROVE, WI
0.7"
HAIL
HAIL
TUNNEL CITY, WI
0.5"
Large Hail
LARGE HAIL
KENOSHA, WI
0.25"
HAIL
HAIL
2 SSE GLEN HAVEN, WI
0.25"
HEAVY RAIN (5)
HEAVY RAIN
HEAVY RAIN
1 N ELKHORN, WI
3.9"
HEAVY RAIN
HEAVY RAIN
1 NNW RACINE, WI
3.0"
HEAVY RAIN
HEAVY RAIN
KENOSHA, WI
2.55"
HEAVY RAIN
HEAVY RAIN
1 W PLATTEVILLE, WI
2.5"
HEAVY RAIN
HEAVY RAIN
PRAIRIE DU CHIEN, WI
1.25"
OTHER (11)
Wall Cloud
WALL CLOUD
KENOSHA, WI
-
FLOOD
FLOOD
WATERFORD, WI
-
FLOOD
FLOOD
1 E FRANKSVILLE, WI
-
FLOOD
FLOOD
1 NNE ELKHORN, WI
-
FLOOD
FLOOD
2 S OAK CREEK, WI
-
FLOOD
FLOOD
2 WNW WIND POINT, WI
-
FLOOD
FLOOD
2 W FRANKSVILLE, WI
-
FLOOD
FLOOD
4 W FRANKSVILLE, WI
-
FLOOD
FLOOD
2 SSW CAMP LAKE, WI
-
FLOOD
FLOOD
2 ESE OAK CREEK, WI
-
FLASH FLOOD
FLASH FLOOD
2 WNW RACINE, WI
-