Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 4, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 10, 2011, 3:34 PM CDT for 5 counties in Wisconsin. It was in force for 41 min. 1 report 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, 3:34 PM CDT (20:34 UTC)
- Expired
- Apr 10, 2011, 4:15 PM CDT
- In force
- 41 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Barron County, WI, Chippewa County, WI, Dunn County, WI, Pierce County, WI, Saint Croix County, WI
The radar
The Minneapolis radar (KMPX), 130 km from the middle of the area, began a volume at 20:36 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, 3:35 PM CDT | HAIL 0.5 | 5 W Menomonie, 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, 8.6 hours before the alert went out and 133 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.
325 WUUS53 KMPX 102034 SVRMPX WIC005-017-033-093-109-102115- /O.NEW.KMPX.SV.W.0004.110410T2034Z-110410T2115Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 334 PM CDT SUN APR 10 2011 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTH CENTRAL BARRON COUNTY IN NORTHWEST WISCONSIN... WEST CENTRAL CHIPPEWA COUNTY IN WEST CENTRAL WISCONSIN... DUNN COUNTY IN WEST CENTRAL WISCONSIN... NORTHEASTERN PIERCE COUNTY IN WEST CENTRAL WISCONSIN... SOUTHEASTERN ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN... * UNTIL 415 PM CDT * AT 331 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR SPRING VALLEY...OR ABOUT 15 MILES EAST OF ELLSWORTH...AND MOVING NORTHEAST AT 55 MPH. LOCATIONS IN THE WARNING INCLUDE... MENOMONIE... HERSEY... WILSON... KNAPP... TAINTER LAKE... WHEELER... COLFAX... RIDGELAND... SAND CREEK... BLOOMER... INTERSTATE 94... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR DAMAGING WINDS IN EXCESS OF 60 MPH AND LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM. WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT SUNDAY EVENING FOR NORTHWESTERN WISCONSIN. && LAT...LON 4532 9179 4506 9141 4468 9225 4482 9242 TIME...MOT...LOC 2033Z 224DEG 48KT 4484 9218 WIND...HAIL 60MPH 1.25IN $$
1 follow-up statement
851 WWUS53 KMPX 102103 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 403 PM CDT SUN APR 10 2011 WIC093-109-102113- /O.CAN.KMPX.SV.W.0004.000000T0000Z-110410T2115Z/ ST. CROIX WI-PIERCE WI- 403 PM CDT SUN APR 10 2011 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PIERCE AND SOUTHEASTERN ST. CROIX COUNTIES IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF PIERCE AND ST. CROIX COUNTIES. LAT...LON 4501 9213 4532 9179 4506 9141 4474 9212 TIME...MOT...LOC 2103Z 224DEG 48KT 4513 9179 $$ WIC005-017-033-102115- /O.CON.KMPX.SV.W.0004.000000T0000Z-110410T2115Z/ BARRON WI-CHIPPEWA WI-DUNN WI- 403 PM CDT SUN APR 10 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR DUNN...WEST CENTRAL CHIPPEWA AND SOUTH CENTRAL BARRON COUNTIES UNTIL 415 PM CDT... AT 402 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR WHEELER...OR 14 MILES NORTH OF MENOMONIE...MOVING NORTHEAST AT 55 MPH. LOCATIONS IMPACTED INCLUDE... SAND CREEK...BLOOMER AND DALLAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. && LAT...LON 4501 9213 4532 9179 4506 9141 4474 9212 TIME...MOT...LOC 2103Z 224DEG 48KT 4513 9179 WIND...HAIL 60MPH 1.00IN $$
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, 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, 4:19 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Eau Claire, Pepin | 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.