Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 6, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 10, 2011, 4:19 PM CDT for Chippewa County, Eau Claire County, Pepin County, Wisconsin. It was in force for 41 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 10, 2011, 4:19 PM CDT (21:19 UTC)
- Expired
- Apr 10, 2011, 5:00 PM CDT
- In force
- 41 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 60.0 mph
Counties Chippewa County, WI, Eau Claire County, WI, Pepin County, WI
The radar
The La Crosse radar (KARX), 101 km from the middle of the area, began a volume at 21:19 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 10, 4:48 PM CDT | HAIL 0.75 | Fall Creek, WI | |
| Apr 10, 5:00 PM CDT | HAIL 1 | Fall Creek, WI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 10, 3:19 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 9.3 hours before the alert went out and 178 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
- 552 J/kg
- Mixed-layer CIN
- -270 J/kg
- Mixed-layer LCL
- 643 m above ground
- 0-6 km bulk shear
- 80 kt
- 0-1 km storm-relative helicity
- 528 m²/s²
- 0-3 km storm-relative helicity
- 499 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
938 WUUS53 KMPX 102119 SVRMPX WIC017-035-091-102200- /O.NEW.KMPX.SV.W.0006.110410T2119Z-110410T2200Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 419 PM CDT SUN APR 10 2011 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTH CENTRAL CHIPPEWA COUNTY IN WEST CENTRAL WISCONSIN... EAU CLAIRE COUNTY IN WEST CENTRAL WISCONSIN... NORTHEASTERN PEPIN COUNTY IN WEST CENTRAL WISCONSIN... * UNTIL 500 PM CDT * AT 417 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING LARGE DAMAGING HAIL UP TO GOLF BALL SIZE AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR MONDOVI... AND MOVING NORTHEAST AT 65 MPH. LOCATIONS IN THE WARNING INCLUDE... FOSTER... BRACKETT... ALTOONA... FALL CREEK... LAKE WISSOTA... BATEMAN... LUDINGTON... CADOTT... INTERSTATE 94... PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...WHICH CAN SIGNIFICANTLY DAMAGE WINDOWS...SIDING AND VEHICLES. DAMAGING WINDS ARE ALSO EXPECTED...WHICH WILL UPROOT TREES AND DOWN POWER LINES. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT SUNDAY EVENING FOR NORTHWESTERN WISCONSIN. && LAT...LON 4458 9142 4459 9177 4501 9118 4484 9095 TIME...MOT...LOC 2120Z 227DEG 55KT 4461 9166 WIND...HAIL 60MPH 1.75IN $$
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 3:20 PM CDT | Special Weather Statement | MPX | Dunn, Pierce | 25 min |
| Apr 10, 3:34 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Chippewa, Dunn, Pierce, Saint Croix | 41 min |
| Apr 10, 4:07 PM CDT | Special Weather Statement | MPX | Pepin | 23 min |
| Apr 10, 4:09 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Dunn, Eau Claire, Pepin | 51 min |
| Apr 10, 4:19 PM CDT | Special Weather Statement | MPX | Pierce | 41 min |
| Apr 10, 4:32 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Chippewa, Dunn, Rusk | 43 min |
| Apr 10, 4:41 PM CDT | Tornado Warning | MPX | Chippewa, Eau Claire | 49 min |
| Apr 10, 4:43 PM CDT | Tornado Warning | MPX | Barron, Chippewa, Dunn, Rusk | 37 min |
| Apr 10, 4:52 PM CDT | Tornado Warning | MPX | Eau Claire | 23 min |
| Apr 10, 5:00 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Dunn, Rusk | 28 min |
| Apr 10, 5:14 PM CDT | Tornado Warning | MPX | Eau Claire | 16 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2011Every severe thunderstorm warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.