Alert archive / Wisconsin / Tornado Watches in 2019
Tornado Watch 237
The Storm Prediction Center issued this tornado watch at May 24, 2019, 7:49 PM CDT for 4 counties in Iowa; Houston County, Minnesota; 8 counties in Wisconsin. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- May 24, 2019, 7:49 PM CDT (00:49 UTC)
- Expired
- May 24, 2019, 10:38 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 50 kt
Counties Allamakee County, IA, Clayton County, IA, Fayette County, IA, Winneshiek County, IA, Houston County, MN, Crawford County, WI, Grant County, WI, Iowa County, WI, La Crosse County, WI, Lafayette County, WI, Monroe County, WI, Richland County, WI, Vernon County, WI
The radar
The La Crosse radar (KARX), 78 km from the middle of the area, began a volume at 00:53 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 20%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 40%
Warnings issued inside it
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 8:26 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Winneshiek | 41 min |
| May 24, 8:30 PM CDT | Tornado Warning | ARX | Allamakee | 45 min |
| May 24, 8:46 PM CDT | Tornado Warning | ARX | La Crosse, Vernon | 29 min |
| May 24, 8:50 PM CDT | Tornado Warning | ARX | Crawford, Grant | 25 min |
| May 24, 9:03 PM CDT | Tornado Warning | ARX | Monroe | 42 min |
| May 24, 9:05 PM CDT | Severe Thunderstorm Warning | ARX | Crawford, Vernon | 55 min |
| May 24, 9:34 PM CDT | Severe Thunderstorm Warning | MKX | Lafayette | 26 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 0.8 hours before the alert went out and 176 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
- 0 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 7:00 PM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Chickasaw, Clayton and 5 more | 2 hr |
| May 24, 8:57 PM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Delaware, Des Moines, Dubuque, Jackson and 4 more | 2 hr |
| May 24, 9:17 PM CDT | Mesoscale Discussion | SPC | Allamakee, Clayton, Fayette, Winneshiek | 118 min |
| May 25, 3:24 PM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Des Moines, Henry, Jefferson, Lee and 2 more | 3 hr |
| May 25, 5:23 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Appanoose, Clarke, Davis, Decatur, Lucas and 7 more | 6 hr |
| May 25, 6:48 PM CDT | Mesoscale Discussion | SPC | Des Moines, Henry, Jefferson, Keokuk, Lee, Louisa and 2 more | 57 min |
Nearby
Tornado Watches in Wisconsin, 2019Tornado Watches in Iowa, 2019Tornado Watches in Minnesota, 2019Every tornado watch in 2019
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; radar from the NEXRAD Level II archive.