Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 21, NWS Twin Cities, MN

May 31, 20134 counties in Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at May 31, 2013, 3:20 PM CDT for 4 counties in Wisconsin. It was in force for 40 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: May 31, 2013, 3:20 PM CDT (20:20 UTC)
Expired: May 31, 2013, 4:00 PM CDT
In force: 40 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Chippewa County, WI, Dunn County, WI, Eau Claire County, WI, Pepin County, WI

The radar

The La Crosse radar (KARX), 109 km from the middle of the area, began a volume at 20:21 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
May 31, 2:35 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.3 hours before the alert went out and 156 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: 60 J/kg
Mixed-layer CIN: -221 J/kg
Mixed-layer LCL: 1191 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 256 m²/s²
0-3 km storm-relative helicity: 269 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

410 
WUUS53 KMPX 312020
SVRMPX
WIC017-033-035-091-312100-
/O.NEW.KMPX.SV.W.0021.130531T2020Z-130531T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
320 PM CDT FRI MAY 31 2013

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN CHIPPEWA COUNTY IN WEST CENTRAL WISCONSIN...
  SOUTHEASTERN DUNN COUNTY IN WEST CENTRAL WISCONSIN...
  WESTERN EAU CLAIRE COUNTY IN WEST CENTRAL WISCONSIN...
  NORTHEASTERN PEPIN COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 400 PM CDT

* AT 318 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
  LINE EXTENDING FROM 9 MILES NORTHEAST OF DURAND TO 6 MILES SOUTH OF
  DURAND TO WABASHA...AND MOVING NORTHEAST AT 40 MPH.

  HAZARD...HALF DOLLAR SIZE HAIL AND 60 MPH WIND GUSTS.

  SOURCE...RADAR INDICATED.

  IMPACT...HAIL DAMAGE TO VEHICLES AND CROPS IS EXPECTED. EXPECT WIND
           DAMAGE TO ROOFS...SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE...
  EAU CLAIRE...ELK MOUND...ROCK FALLS...CARYVILLE...LAKE HALLIE AND
  ALTOONA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4459 9152 4459 9198 4480 9192 4505 9143
      4487 9141
TIME...MOT...LOC 2020Z 231DEG 33KT 4476 9184 4456 9190
          4442 9202

HAIL...1.25IN
WIND...60MPH

$$

CLF

1 follow-up statement

179 
WWUS53 KMPX 312056
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
356 PM CDT FRI MAY 31 2013

WIC017-033-035-091-312106-
/O.EXP.KMPX.SV.W.0021.000000T0000Z-130531T2100Z/
CHIPPEWA WI-DUNN WI-EAU CLAIRE WI-PEPIN WI-
356 PM CDT FRI MAY 31 2013

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PEPIN...WESTERN
EAU CLAIRE...SOUTHEASTERN DUNN AND SOUTHWESTERN CHIPPEWA COUNTIES IN
WEST CENTRAL WISCONSIN WILL EXPIRE AT 400 PM CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.

LAT...LON 4459 9152 4459 9198 4480 9192 4505 9143
      4487 9141
TIME...MOT...LOC 2056Z 230DEG 33KT 4498 9153 4475 9157
          4461 9169

$$

CLF

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 31, 4:01 PM CDT	Severe Thunderstorm Warning	MPX	Eau Claire	29 min
May 31, 4:12 PM CDT	Special Weather Statement	MPX	Chippewa	33 min
May 31, 4:21 PM CDT	Severe Thunderstorm Warning	MPX	Eau Claire	24 min
May 31, 4:33 PM CDT	Special Weather Statement	MPX	Polk	27 min
May 31, 4:52 PM CDT	Special Weather Statement	MPX	Eau Claire	23 min
May 31, 5:03 PM CDT	Special Weather Statement	MPX	Saint Croix	27 min
May 31, 5:06 PM CDT	Special Weather Statement	MPX	Barron	24 min
May 31, 5:09 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Polk	21 min
May 31, 5:11 PM CDT	Severe Thunderstorm Warning	MPX	Saint Croix	19 min
May 31, 5:27 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Dunn, Polk, Saint Croix	33 min
May 31, 5:33 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Polk	27 min
May 31, 5:39 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Saint Croix	21 min
May 31, 5:57 PM CDT	Severe Thunderstorm Warning	MPX	Dunn	33 min
May 31, 6:09 PM CDT	Severe Thunderstorm Warning	MPX	Dunn	21 min
May 31, 6:22 PM CDT	Severe Thunderstorm Warning	MPX	Dunn	23 min
May 31, 6:30 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Dunn	30 min
May 31, 6:42 PM CDT	Severe Thunderstorm Warning	MPX	Eau Claire, Pepin	33 min
May 31, 6:55 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Dunn, Eau Claire	35 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2013 Every severe thunderstorm warning in 2013

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.