Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 25, NWS Twin Cities, MN

May 31, 2013Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at May 31, 2013, 5:11 PM CDT for Saint Croix County, Wisconsin. It was in force for 19 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
May 31, 2013, 5:11 PM CDT (22:11 UTC)
Expired
May 31, 2013, 5:30 PM CDT
In force
19 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.75 in
Wind
60.0 mph

County Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 104 km from the middle of the area, began a volume at 22:14 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
May 31, 5:11 PM CDTHAIL 1.753 Se Baldwin, WILOCATED NEAR MM 19 ON I-94.

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
May 31, 2:35 PM CDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.2 hours before the alert went out and 106 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.

891 
WUUS53 KMPX 312211
SVRMPX
WIC109-312230-
/O.NEW.KMPX.SV.W.0025.130531T2211Z-130531T2230Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 530 PM CDT

* AT 509 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 12 MILES
  NORTHEAST OF ELLSWORTH...AND MOVING NORTHEAST AT 40 MPH.

  HAZARD...GOLF BALL SIZE HAIL AND 60 MPH WIND GUSTS.

  SOURCE...RADAR INDICATED. GOLF BALL SIZE HAIL HAS BEEN REPORTED.

  IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL
           DAMAGE TO ROOFS...SIDING...WINDOWS...VEHICLES AND CROPS.
           EXPECT WIND DAMAGE TO ROOFS...SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE...
  WOODVILLE...HERSEY...WILSON...GLENWOOD CITY AND EMERALD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4485 9228 4486 9243 4511 9227 4504 9213
      4497 9214
TIME...MOT...LOC 2211Z 215DEG 33KT 4490 9234

HAIL...1.75IN
WIND...60MPH

$$

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, 5:27 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, 6:42 PM CDTSevere Thunderstorm WarningMPXEau Claire, Pepin33 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.