Western Wisconsin sweltered under two days of excessive heat in the middle of July. Heat indices topped out between 100 and 110 on July 18th and 105 and 120 on July 19th.
Every event with a place to put it; 11 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS ARX wrote it up.
Western Wisconsin sweltered under two days of excessive heat in the middle of July. Heat indices topped out between 100 and 110 on July 18th and 105 and 120 on July 19th. Air temperatures during this heat wave generally topped out around 90 while dew points climbed into the lower 80s. The highest calculated heat index was 118 from a mesonet station near Cataract (Monroe County).
The local office's own words before the first event, 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 the first event at Jul 18, 1:57 PM CST, 38 minutes earlier.
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</html>Hazardous Weather Outlook National Weather Service La Crosse WI 236 PM CDT Thu Jul 18 2019 WIZ017-191200- Taylor- 236 PM CDT Thu Jul 18 2019 This Hazardous Weather Outlook is for portions of north central Wisconsin. .DAY ONE...This Afternoon and Tonight Strong to severe storms are possible this evening into the overnight hours. Damaging wind, large hail, and very heavy rainfall with localized flooding will be the main threats. .DAYS TWO THROUGH SEVEN...Friday through Wednesday Heat will be increasing through Friday with heat indices topping off in the 95 to 100 range. This heat could bring on heat related illnesses if precautions are not taken. Periodic thunderstorm chances will continue into the weekend. Heavy rainfall could accompany these storms. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated at this time. However, any reports of heavy rainfall and flooding would be appreciated. .EMERGENCY MANAGEMENT COORDINATION... No webinar is scheduled. IAZ008>010-MNZ079-086>088-094>096-WIZ029-032>034-041>044-053-055- 191200- Mitchell-Howard-Winneshiek-Wabasha-Dodge-Olmsted-Winona-Mower- Fillmore-Houston-Clark-Buffalo-Trempealeau-Jackson-La Crosse- Monroe-Juneau-Adams-Vernon-Richland- 236 PM CDT Thu Jul 18 2019 This Hazardous Weather Outlook is for portions of northeast Iowa...southeast Minnesota...southwest Wisconsin and west central Wisconsin. .DAY ONE...This Afternoon and Tonight A Heat Advisory remains in effect. Heat indices will top out near 100, especially in areas that see some peeks of sunshine. This heat could bring on heat related illnesses if precautions are not taken. Strong to severe storms are possible this evening into the overnight hours. Damaging wind, large hail, and very heavy rainfall with localized flooding will be the main threats. .DAYS TWO THROUGH SEVEN...Friday through Wednesday A Heat Advisory remains in effect Friday. Plan on heat indices topping off in the 95 to 105 range. This heat could bring on heat related illnesses if precautions are not taken. Periodic thunderstorm chances will continue into the weekend. Heavy rainfall could accompany these storms. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed through this evening. .EMERGENCY MANAGEMENT COORDINATION... No webinar is scheduled. IAZ011-018-019-029-030-WIZ054-061-191200- Allamakee-Floyd-Chickasaw-Fayette-Clayton-Crawford-Grant- 236 PM CDT Thu Jul 18 2019 This Hazardous Weather Outlook is for portions of northeast Iowa and southwest Wisconsin. .DAY ONE...This Afternoon and Tonight An Excessive Heat Warning remains in effect. Heat indices will top out near 105, especially in areas that see some peeks of sunshine. This heat could bring on heat related illnesses if precautions are not taken. Strong to severe storms are possible this evening into the overnight hours. Damaging wind, large hail, and very heavy rainfall with localized flooding will be the main threats. .DAYS TWO THROUGH SEVEN...Friday through Wednesday An Excessive Heat Warning remains in effect Friday. Plan on heat indices topping off in the 100 to 110 range. This heat could bring on heat related illnesses if precautions are not taken. Periodic thunderstorm chances will continue into the weekend. Heavy rainfall could accompany these storms. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed through this evening. .EMERGENCY MANAGEMENT COORDINATION... No webinar is scheduled. CA
Special Weather Statement
National Weather Service La Crosse WI
943 AM CDT Thu Jul 18 2019
WIZ054-055-181545-
Richland-Crawford-
943 AM CDT Thu Jul 18 2019
...THUNDERSTORMS WITH HEAVY RAIN AFFECTING RICHLAND AND CRAWFORD
COUNTIES...
At 940 AM CDT, thunderstorms were producing periods of heavy rain
across portions of Crawford and Richland Counties. Be alert for
possible flooding of low lying areas. Never drive through flood
waters. Also, be alert for possible mud and rock slides in steep
terrain. Thunderstorms will taper off through the late morning hours.
Locations impacted include...
Prairie Du Chien, Richland Center, Boscobel, Westport, Excelsior,
Bridgeport, Lone Rock, Seneca, Rockbridge, Wauzeka, Ithaca, Soldiers
Grove, Sylvan, Gays Mills, Eastman, De Soto, Mount Sterling,
Ferryville, Boaz and Lynxville.
Torrential rainfall is occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
LAT...LON 4317 9020 4321 9029 4321 9055 4317 9069
4312 9074 4306 9094 4303 9097 4299 9106
4300 9113 4299 9116 4307 9118 4313 9118
4315 9115 4326 9106 4332 9111 4335 9121
4342 9120 4342 9068 4345 9067 4345 9019
TIME...MOT...LOC 1440Z 254DEG 52KT 4331 9057
CAPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
1001 AM CDT THU JUL 18 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0957 AM HEAVY RAIN 1 NE PRAIRIE DU CHIEN 43.05N 91.13W
07/18/2019 M3.11 INCH CRAWFORD WI PUBLIC
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</html>The national radar mosaic for the moment the first event began.
11 excessive heat. Local standard time, as filed.
Heat indices of 100 to 115 were common across Crawford County on July 18 and 19th. The highest calculated heat index was 111 from the automated weather observing equipment at the Prairie du Chien airport.
Heat indices of 100 to 115 were common across Grant County from July 18 through the morning of the 20th. The highest calculated heat index was 117 from the automated weather observing equipment at the Boscobel airport.
Heat indices of 105 to 115 were common across Buffalo County on July 19th.
Heat indices of 100 to 115 were common across Trempealeau County on July 19th. The highest calculated heat index was 116 from a mesonet station in Trempealeau.
Heat indices of 100 to 115 were common across Vernon County on July 19th. The highest calculated heat index was 115 from the automated weather observing equipment at the Viroqua airport.
Heat indices of 100 to 115 were common across Richland County on July 19th.
Heat indices of 105 to 115 were common across Adams County on July 19th.
Heat indices of 100 to 110 were common across Jackson County on July 19th. The highest calculated heat index was 109 from a mesonet station near Black River Falls.
Heat indices of 100 to 115 were common across Juneau County on July 19th. The highest calculated heat index was 114 from the automated weather observing equipment at the Mauston airport.
Heat indices of 100 to 115 were common across La Crosse County on July 19th. The highest calculated heat index was 117 from the automated weather observing equipment at the La Crosse airport.
Heat indices of 100 to 115 were common across Monroe County on July 19th. The highest calculated heat index was 118 from a mesonet station near Cataract.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2019Every state in 2019This day in weather historyWarnings in Wisconsin, July 2019
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 846157, 846159, 846156, 846170, 846171, 846165, 846155, 846160, 846161, 846163, 846164.