Alert archive / Wisconsin / Tornado Warnings in 2011
Tornado Warning 2, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Apr 10, 2011, 4:43 PM CDT for 4 counties in Wisconsin. It was in force for 37 min. 3 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, 4:43 PM CDT (21:43 UTC)
- Expired
- Apr 10, 2011, 5:20 PM CDT
- In force
- 37 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
Counties Barron County, WI, Chippewa County, WI, Dunn County, WI, Rusk County, WI
The radar
The La Crosse radar (KARX), 173 km from the middle of the area, began a volume at 21:46 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, 4:45 PM CDT | HAIL 0.75 | 4 S Island Lake, WI | |
| Apr 10, 4:45 PM CDT | HAIL 1.75 | 1 W New Auburn, WI | |
| Apr 10, 5:05 PM CDT | HAIL 1.75 | Island Lake, WI | HWY 40 AND COUNTY RD D |
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, 9.7 hours before the alert went out and 183 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.
116 WFUS53 KMPX 102143 TORMPX WIC005-017-033-107-102230- /O.NEW.KMPX.TO.W.0002.110410T2143Z-110410T2230Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 443 PM CDT SUN APR 10 2011 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * TORNADO WARNING FOR... SOUTHEASTERN BARRON COUNTY IN NORTHWEST WISCONSIN... WESTERN RUSK COUNTY IN NORTHWEST WISCONSIN... NORTHWESTERN CHIPPEWA COUNTY IN WEST CENTRAL WISCONSIN... NORTHEASTERN DUNN COUNTY IN WEST CENTRAL WISCONSIN... * UNTIL 530 PM CDT * AT 440 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS 3 MILES EAST OF SAND CREEK...AND MOVING NORTHEAST AT 45 MPH. * LOCATIONS IN THE WARNING INCLUDE... NEW AUBURN... ISLAND LAKE... WEYERHAEUSER... BRUCE... CONRATH... PRECAUTIONARY/PREPAREDNESS ACTIONS... WHEN A TORNADO WARNING IS ISSUED BASED ON RADAR...IT MEANS THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT SUNDAY EVENING FOR NORTHWESTERN WISCONSIN. && LAT...LON 4560 9135 4538 9096 4507 9156 4519 9174 TIME...MOT...LOC 2143Z 224DEG 40KT 4517 9159 $$
1 follow-up statement
321 WWUS53 KMPX 102220 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 520 PM CDT SUN APR 10 2011 WIC005-017-033-107-102229- /O.CAN.KMPX.TO.W.0002.000000T0000Z-110410T2230Z/ BARRON WI-RUSK WI-CHIPPEWA WI-DUNN WI- 520 PM CDT SUN APR 10 2011 ...THE TORNADO WARNING FOR NORTHEASTERN DUNN...NORTHWESTERN CHIPPEWA...WESTERN RUSK AND SOUTHEASTERN BARRON COUNTIES IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF THE WARNED AREA. A TORNADO WATCH REMAINS IN EFFECT. LAT...LON 4560 9135 4538 9096 4507 9156 4519 9174 TIME...MOT...LOC 2219Z 224DEG 40KT 4546 9119 $$
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, 4:19 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, 4:52 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
Tornado Warnings in Wisconsin, 2011Every tornado warning in 2011Tornadoes 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.