Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 90, NWS Twin Cities, MN

June 21, 2013Pierce County, Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 21, 2013, 8:11 PM CDT for Pierce County, Saint Croix County, Wisconsin. It was in force for 64 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
Jun 21, 2013, 8:11 PM CDT (01:11 UTC)
Expired
Jun 21, 2013, 9:15 PM CDT
In force
64 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Pierce County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 79 km from the middle of the area, began a volume at 01:11 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

TimeReportWhereRemark
Jun 21, 8:45 PM CDTTSTM WND GST 586 S Hudson, 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.

IssuedProductOfficeLasted
Jun 21, 5:16 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.2 hours before the alert went out and 82 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 00:00Z on 2013-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 971 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2013-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 square meters per square second.1939Sfc1 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
971 J/kg
Mixed-layer CIN
-76 J/kg
Mixed-layer LCL
973 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.8

Open this sounding in Storm Lab

The text

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

728 
WUUS53 KMPX 220111
SVRMPX
WIC093-109-220215-
/O.NEW.KMPX.SV.W.0090.130622T0111Z-130622T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
811 PM CDT FRI JUN 21 2013

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN PIERCE COUNTY IN WEST CENTRAL WISCONSIN...
  ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 915 PM CDT

* AT 807 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 8 MILES SOUTH OF FOREST LAKE TO MAPLEWOOD TO 6 MILES
  SOUTHEAST OF EAGAN...AND MOVING EAST AT 45 MPH.

  HAZARD...60 MPH WIND GUSTS.

  SOURCE...RADAR INDICATED.

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE...
  RIVER FALLS...NEW RICHMOND...ELLSWORTH...HUDSON...NORTH HUDSON...
  PRESCOTT...BURKHARDT...SOMERSET...BOARDMAN...ROBERTS...HOULTON...
  HAMMOND...BELDENVILLE...BALDWIN...MARTEL...CYLON...WOODVILLE...
  EMERALD...FOREST AND HERSEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4469 9271 4475 9280 4484 9276 4490 9277
      4492 9275 4509 9278 4511 9274 4520 9277
      4516 9215 4512 9215 4512 9213 4467 9214
TIME...MOT...LOC 0111Z 271DEG 39KT 4517 9298 4495 9292
          4477 9301

HAIL...<.75IN
WIND...60MPH

$$
1 follow-up statement
380 
WWUS53 KMPX 220148
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
848 PM CDT FRI JUN 21 2013

WIC093-109-220215-
/O.CON.KMPX.SV.W.0090.000000T0000Z-130622T0215Z/
ST. CROIX WI-PIERCE WI-
848 PM CDT FRI JUN 21 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
PIERCE AND ST. CROIX COUNTIES UNTIL 915 PM CDT...

AT 844 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEW RICHMOND TO 12 MILES NORTHEAST OF RIVER FALLS TO
ELLSWORTH...AND MOVING EAST AT 45 MPH.

HAZARD...60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE...
MARTEL...CYLON...WOODVILLE...EMERALD...FOREST...HERSEY...SPRING
VALLEY...WILSON...GLENWOOD CITY AND ELMWOOD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4467 9214 4469 9271 4495 9261 4519 9267
      4516 9215 4512 9215 4512 9213 4509 9213
TIME...MOT...LOC 0148Z 271DEG 39KT 4516 9241 4494 9235
          4476 9245

HAIL...<.75IN
WIND...60MPH

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 8:27 PM CDTFlash Flood WarningMPXPierce, Saint Croix4 hr
Jun 21, 8:38 PM CDTSpecial Weather StatementMPXPepin67 min
Jun 21, 8:57 PM CDTSpecial Weather StatementMPXChippewa, Dunn, Eau Claire78 min
Jun 21, 9:02 PM CDTFlash Flood WarningMPXDunn, Saint Croix3 hr
Jun 21, 9:26 PM CDTFlash Flood WarningMPXChippewa, Eau Claire3 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.