Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 8, NWS Twin Cities, MN

April 10, 2011Chippewa County, Dunn County, Rusk County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 10, 2011, 5:00 PM CDT for Chippewa County, Dunn County, Rusk County, Wisconsin. It was in force for 28 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: Apr 10, 2011, 5:00 PM CDT (22:00 UTC)
Expired: Apr 10, 2011, 5:28 PM CDT
In force: 28 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

Counties Chippewa County, WI, Dunn County, WI, Rusk County, WI

The radar

The La Crosse radar (KARX), 155 km from the middle of the area, began a volume at 22:00 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 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 PDS	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.0 hours before the alert went out and 203 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

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

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

464 
WUUS53 KMPX 102200
SVRMPX
WIC017-033-107-102245-
/O.NEW.KMPX.SV.W.0008.110410T2200Z-110410T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
500 PM CDT SUN APR 10 2011

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CHIPPEWA COUNTY IN WEST CENTRAL WISCONSIN...
  EXTREME EAST CENTRAL DUNN COUNTY IN WEST CENTRAL WISCONSIN...
  SOUTHEASTERN RUSK COUNTY IN NORTHWEST WISCONSIN...

* UNTIL 545 PM CDT

* AT 458 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 6 MILES NORTHWEST
  OF CHIPPEWA FALLS...AND MOVING NORTHEAST AT 75 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  BLOOMER...
  BATEMAN...
  EAGLETON...
  JIM FALLS...
  CADOTT...
  CORNELL...
  HOLCOMBE...
  SHELDON...
  CONRATH...

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 4537 9091 4503 9091 4485 9141 4497 9172
      4551 9085 4538 9073
TIME...MOT...LOC 2200Z 229DEG 63KT 4502 9143
WIND...HAIL 60MPH 1.75IN

$$

2 follow-up statements

073 
WWUS53 KMPX 102216
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
516 PM CDT SUN APR 10 2011

WIC033-102226-
/O.CAN.KMPX.SV.W.0008.000000T0000Z-110410T2245Z/
DUNN WI-
516 PM CDT SUN APR 10 2011

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME EAST CENTRAL DUNN
COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF DUNN COUNTY.

LAT...LON 4537 9091 4503 9091 4495 9114 4509 9151
      4551 9085 4538 9073
TIME...MOT...LOC 2216Z 229DEG 63KT 4520 9113

$$

WIC017-107-102245-
/O.CON.KMPX.SV.W.0008.000000T0000Z-110410T2245Z/
RUSK WI-CHIPPEWA WI-
516 PM CDT SUN APR 10 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
CHIPPEWA AND SOUTH CENTRAL RUSK COUNTIES UNTIL 545 PM CDT...

AT 512 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 CORNELL...OR
18 MILES NORTHEAST OF CHIPPEWA FALLS...MOVING NORTHEAST AT 70 MPH.

LOCATIONS IMPACTED INCLUDE...
  HOLCOMBE...SHELDON AND CONRATH.

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 4537 9091 4503 9091 4495 9114 4509 9151
      4551 9085 4538 9073
TIME...MOT...LOC 2216Z 229DEG 63KT 4520 9113
WIND...HAIL 60MPH 1.00IN

$$

753 
WWUS53 KMPX 102228
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
528 PM CDT SUN APR 10 2011

WIC017-107-102238-
/O.CAN.KMPX.SV.W.0008.000000T0000Z-110410T2245Z/
RUSK WI-CHIPPEWA WI-
528 PM CDT SUN APR 10 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CHIPPEWA AND
SOUTHEASTERN RUSK COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.

LAT...LON 4537 9091 4503 9091 4495 9114 4509 9151
      4551 9085 4538 9073
TIME...MOT...LOC 2228Z 229DEG 63KT 4534 9090

$$

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, 4:43 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, 5:14 PM CDT	Tornado Warning	MPX	Eau Claire	16 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2011 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.