Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 33, NWS Twin Cities, MN

May 31, 2013Eau Claire County, Pepin County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at May 31, 2013, 6:42 PM CDT for Eau Claire County, Pepin County, Wisconsin. It was in force for 33 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, 6:42 PM CDT (23:42 UTC)
Expired
May 31, 2013, 7:15 PM CDT
In force
33 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Eau Claire County, WI, Pepin County, WI

The radar

The La Crosse radar (KARX), 99 km from the middle of the area, began a volume at 23:42 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.

IssuedProductOfficeLasted
May 31, 2:35 PM CDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.7 hours before the alert went out and 158 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2013-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 60 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2013-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 256 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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.

859 
WUUS53 KMPX 312342
SVRMPX
WIC035-091-010015-
/O.NEW.KMPX.SV.W.0033.130531T2342Z-130601T0015Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 715 PM CDT

* AT 639 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MONDOVI...
  AND MOVING NORTHEAST AT 35 MPH.

  HAZARD...QUARTER SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...DAMAGE TO VEHICLES AND CROPS IS EXPECTED.

* LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EASTERN PEPIN AND SOUTHWESTERN EAU CLAIRE
  COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4468 9141 4459 9154 4459 9178 4459 9179
      4469 9170 4469 9165 4472 9165 4473 9165
TIME...MOT...LOC 2343Z 217DEG 31KT 4456 9173

HAIL...1.00IN
WIND...<50MPH

$$

CLF
1 follow-up statement
053 
WWUS53 KMPX 010013
SVSMPX

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

WIC035-091-010023-
/O.EXP.KMPX.SV.W.0033.000000T0000Z-130601T0015Z/
EAU CLAIRE WI-PEPIN WI-
713 PM CDT FRI MAY 31 2013

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PEPIN AND
SOUTHWESTERN EAU CLAIRE COUNTIES IN WEST CENTRAL WISCONSIN WILL
EXPIRE AT 715 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA.

LAT...LON 4468 9141 4459 9154 4459 9178 4459 9179
      4469 9170 4469 9165 4472 9165 4473 9165
TIME...MOT...LOC 0013Z 217DEG 31KT 4477 9151

$$

CLF

The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 3:20 PM CDTSevere Thunderstorm WarningMPXChippewa, Dunn, Eau Claire, Pepin40 min
May 31, 4:01 PM CDTSevere Thunderstorm WarningMPXEau Claire29 min
May 31, 4:12 PM CDTSpecial Weather StatementMPXChippewa33 min
May 31, 4:21 PM CDTSevere Thunderstorm WarningMPXEau Claire24 min
May 31, 4:33 PM CDTSpecial Weather StatementMPXPolk27 min
May 31, 4:52 PM CDTSpecial Weather StatementMPXEau Claire23 min
May 31, 5:03 PM CDTSpecial Weather StatementMPXSaint Croix27 min
May 31, 5:06 PM CDTSpecial Weather StatementMPXBarron24 min
May 31, 5:09 PM CDTSevere Thunderstorm WarningMPXBarron, Polk21 min
May 31, 5:11 PM CDTSevere Thunderstorm WarningMPXSaint Croix19 min
May 31, 5:27 PM CDTSevere Thunderstorm WarningMPXBarron, Dunn, Polk, Saint Croix33 min
May 31, 5:33 PM CDTSevere Thunderstorm WarningMPXBarron, Polk27 min
May 31, 5:39 PM CDTSevere Thunderstorm WarningMPXDunn, Saint Croix21 min
May 31, 5:57 PM CDTSevere Thunderstorm WarningMPXDunn33 min
May 31, 6:09 PM CDTSevere Thunderstorm WarningMPXDunn21 min
May 31, 6:22 PM CDTSevere Thunderstorm WarningMPXDunn23 min
May 31, 6:30 PM CDTSevere Thunderstorm WarningMPXChippewa, Dunn30 min
May 31, 6:55 PM CDTSevere Thunderstorm WarningMPXChippewa, Dunn, Eau Claire35 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2013Every 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.