Alert archive / Iowa / Special Weather Statements in 2022
Special Weather Statement, NWS La Crosse, WI
NWS La Crosse, WI issued this special weather statement at May 20, 2022, 5:39 AM CDT for Allamakee County, Winneshiek County, Iowa. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 20, 2022, 5:39 AM CDT (10:39 UTC)
- Expired
- May 20, 2022, 6:30 AM CDT
- In force
- 51 min
- Issued by
- NWS La Crosse, WI
- Hail
- 0.75 in
- Wind
- 30
Counties Allamakee County, IA, Winneshiek County, IA
The radar
The La Crosse radar (KARX), 77 km from the middle of the area, began a volume at 10:43 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.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 10.7 hours before the alert went out and 229 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
- 1129 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 209 m²/s²
- 0-3 km storm-relative helicity
- 363 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at May 20, 3:59 AM CDT, 1 hour 40 minutes earlier.
Area forecast discussion, May 20, 3:59 AM CDT, 1 hour 40 minutes before
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</html>Hazardous weather outlook, May 20, 4:49 AM CDT, 50 minutes before
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</html>In the hours before
Local storm report, May 20, 12:54 AM CDT, 4 hours 45 minutes before
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</html>Local storm report, May 20, 1:31 AM CDT, 4 hours 8 minutes before
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</html>Special weather statement, May 20, 2:07 AM CDT, 3 hours 32 minutes before
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</html>Special weather statement, May 20, 2:24 AM CDT, 3 hours 15 minutes before
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</html>Special weather statement, May 20, 5:39 AM CDT, 0 minutes before
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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 |
|---|---|---|---|---|
| May 19, 7:57 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse, Monroe, Vernon | 48 min |
| May 19, 8:20 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse, Monroe, Vernon | 40 min |
| May 19, 8:28 PM CDT | Severe Thunderstorm Warning | ARX | Juneau, Monroe | 47 min |
| May 19, 8:33 PM CDT | Areal Flood Advisory | ARX | La Crosse | 117 min |
| May 19, 8:58 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse, Monroe, Vernon | 47 min |
| May 19, 9:03 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse, Monroe | 57 min |
| May 19, 9:25 PM CDT | Severe Thunderstorm Warning | ARX | Adams, Juneau | 65 min |
| May 19, 9:51 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo, La Crosse, Trempealeau | 39 min |
| May 19, 10:37 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse | 38 min |
| May 19, 11:09 PM CDT | Severe Thunderstorm Warning | ARX | Adams, Juneau | 51 min |
| May 19, 11:10 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse | 6 min |
| May 20, 2:07 AM CDT | Special Weather Statement | ARX | Adams, Juneau, Monroe | 53 min |
| May 20, 2:24 AM CDT | Special Weather Statement | ARX | Buffalo, Trempealeau | 66 min |
| May 20, 7:41 AM CDT | Special Weather Statement | ARX | Monroe | 34 min |
| May 20, 8:03 AM CDT | Special Weather Statement | ARX | Adams, Juneau | 42 min |
| May 19, 7:28 PM CDT | Special Weather Statement | ARX | Fillmore | 62 min |
| May 19, 7:34 PM CDT | Severe Thunderstorm Warning | ARX | Fillmore | 41 min |
| May 19, 7:51 PM CDT | Severe Thunderstorm Warning | ARX | Houston | 39 min |
| May 19, 7:57 PM CDT | Severe Thunderstorm Warning | ARX | Winona | 29 min |
| May 19, 8:39 PM CDT | Severe Thunderstorm Warning | ARX | Houston, Winona | 21 min |
| May 19, 9:25 PM CDT | Flash Flood Warning | ARX | Winona | 2 hr |
| May 19, 10:05 PM CDT | Flash Flood Warning | ARX | Winona | 4 hr |
Nearby
Special Weather Statements in Iowa, 2022Every special weather statement in 2022
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.