Alert archive / Wisconsin / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 219
The Storm Prediction Center issued this severe thunderstorm watch at May 9, 2001, 10:00 PM CDT for 4 counties in Iowa; Houston County, Minnesota; 33 counties in Wisconsin. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 9, 2001, 10:00 PM CDT (03:00 UTC)
- Expired
- May 10, 2001, 3:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 38 counties
Allamakee County, IA, Clayton County, IA, Fayette County, IA, Winneshiek County, IA, Houston County, MN, Adams County, WI, Chippewa County, WI, Clark County, WI, Columbia County, WI, Crawford County, WI, Dane County, WI, Eau Claire County, WI, Forest County, WI, Grant County, WI, Green Lake County, WI, Iowa County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Marquette County, WI, Menominee County, WI, Monroe County, WI, Oneida County, WI, Portage County, WI, Price County, WI, Richland County, WI, Rusk County, WI, Sauk County, WI, Shawano County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI, Waupaca County, WI, Waushara County, WI, Wood County, WI
The radar
The La Crosse radar (KARX), 51 km from the middle of the area, began a volume at 03:03 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.
Warnings issued inside it
4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 10:04 PM CDT | Severe Thunderstorm Warning | ARX | Winneshiek | 56 min |
| May 9, 10:30 PM CDT | Severe Thunderstorm Warning | ARX | Trempealeau | 45 min |
| May 9, 10:44 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 46 min |
| May 10, 1:39 AM CDT | Severe Thunderstorm Warning | GRB | Lincoln, Oneida | 66 min |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 3.0 hours before the alert went out and 206 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
- 81 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 2026 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 9:00 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Appanoose, Audubon, Boone, Cass and 29 more | 5 hr |
| May 10, 11:00 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Allamakee, Audubon, Benton, Black Hawk, Boone and 47 more | 5 hr |
| May 10, 4:15 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Audubon, Benton, Black Hawk, Boone and 46 more | 6 hr |
| May 10, 5:00 PM CDT | Severe Thunderstorm Watch | SPC | Dubuque | 5 hr |
| May 10, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | Cass, Fremont, Mills, Montgomery, Page, Pottawattamie and 1 more | 5 hr |
| May 9, 7:30 PM CDT | Severe Thunderstorm Watch | SPC | Aitkin, Benton, Carlton, Chisago, Crow Wing, Isanti and 6 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Wisconsin, 2001Severe Thunderstorm Watches in Iowa, 2001Severe Thunderstorm Watches in Minnesota, 2001Every severe thunderstorm watch in 2001
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.