Alert archive / Wisconsin / Heat Advisories in 2020
Heat Advisory 5, NWS La Crosse, WI
NWS La Crosse, WI issued this heat advisory at Aug 24, 2020, 3:21 AM CDT for 11 counties in Wisconsin; 8 counties in Iowa; 7 counties in Minnesota. It took effect at Aug 24, 2020, 12:00 PM CDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Aug 24, 2020, 3:21 AM CDT (08:21 UTC)
- In effect from
- Aug 24, 2020, 12:00 PM CDT
- Expired
- Aug 24, 2020, 7:00 PM CDT
- In force
- 7 hr
- Issued by
- NWS La Crosse, WI
All 26 counties
Allamakee County, IA, Chickasaw County, IA, Clayton County, IA, Fayette County, IA, Floyd County, IA, Howard County, IA, Mitchell County, IA, Winneshiek County, IA, Dodge County, MN, Fillmore County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Adams County, WI, Buffalo County, WI, Crawford County, WI, Grant County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Monroe County, WI, Richland County, WI, Trempealeau County, WI, Vernon County, WI
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 8.4 hours before the alert went out and 212 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 669 J/kg
- Mixed-layer CIN
- -226 J/kg
- Mixed-layer LCL
- 1807 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS La Crosse, WI wrote its last area forecast discussion before this heat advisory went out at Aug 24, 3:00 AM CDT, 21 minutes earlier.
Area forecast discussion, Aug 24, 3:00 AM CDT, 21 minutes before
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</html>Hazardous weather outlook, Aug 23, 8:10 PM CDT, 7 hours 11 minutes before
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Special weather statement, Aug 23, 11:36 PM CDT, 3 hours 45 minutes before
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</html>Special weather statement, Aug 24, 2:05 AM CDT, 1 hour 16 minutes before
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<main class="wrap">
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
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The site you requested is temporarily down for maintenance or an unexpected outage.
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Please try again in a few minutes.
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</html>The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 4:56 PM CDT | Special Weather Statement | ARX | Clark, Taylor | 79 min |
Nearby
Heat Advisories in Wisconsin, 2020Heat Advisories in Iowa, 2020Heat Advisories in Minnesota, 2020Every heat advisory in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.