Alert archive / Wisconsin / Heat Advisories in 2020
Heat Advisory 7, NWS La Crosse, WI
NWS La Crosse, WI issued this heat advisory at Aug 26, 2020, 2:53 AM CDT for 9 counties in Wisconsin; 8 counties in Iowa; 7 counties in Minnesota. It took effect at Aug 26, 2020, 1:00 PM CDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Aug 26, 2020, 2:53 AM CDT (07:53 UTC)
- In effect from
- Aug 26, 2020, 1:00 PM CDT
- Expired
- Aug 26, 2020, 7:00 PM CDT
- In force
- 6 hr
- Issued by
- NWS La Crosse, WI
All 24 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, Buffalo County, WI, Crawford County, WI, Grant County, WI, Jackson County, WI, La Crosse County, WI, Monroe County, WI, Richland County, WI, Trempealeau County, WI, Vernon County, WI
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 7.9 hours before the alert went out and 304 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1794 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 196 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 25, 6:39 PM CDT, 8 hours 14 minutes earlier.
Area forecast discussion, Aug 25, 6:39 PM CDT, 8 hours 14 minutes before
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</html>Hazardous weather outlook, Aug 25, 4:38 AM CDT, 22 hours 15 minutes before
Hazardous Weather Outlook National Weather Service La Crosse WI 438 AM CDT Tue Aug 25 2020 IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029- 032>034-041>044-053>055-061-261200- Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette- Clayton-Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Houston- Taylor-Clark-Buffalo-Trempealeau-Jackson-La Crosse-Monroe-Juneau- Adams-Vernon-Crawford-Richland-Grant- 438 AM CDT Tue Aug 25 2020 This Hazardous Weather Outlook is for portions of southeast Minnesota...northeast Iowa and southwest into central Wisconsin. .DAY ONE...Today and Tonight Heat indices in the 100 to 105 range are expected this afternoon into early evening across parts of the area. A Heat Advisory is in effect from 1 to 7 pm along and south of I-94. Thunderstorms may develop tonight mainly north of I-94. Some of these storms could become strong, with gusty winds, hail, and heavy rainfall possible. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Additional chances for storms will be possible through midweek mainly north of I-94. More widespread chances for showers and storms arrive Thursday night into Friday, with some strong to severe storms and heavy rain possible. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated at this time. .EMERGENCY MANAGEMENT COORDINATION... No webinar is scheduled. NMB
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.