Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 95, NWS Twin Cities, MN

May 26, 20124 counties in Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at May 26, 2012, 5:09 PM CDT for 4 counties in Wisconsin. It was in force for 50 min. 3 reports 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 26, 2012, 5:09 PM CDT (22:09 UTC)
Expired
May 26, 2012, 5:59 PM CDT
In force
50 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

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

The radar

The La Crosse radar (KARX), 116 km from the middle of the area, began a volume at 22:11 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
May 26, 5:15 PM CDTHAIL 1.25Elmwood, WI
May 26, 5:55 PM CDTHAIL 1.753 Ese Caryville, WIGOLF BALL SIZED HAIL REPORTED IN BRUNSWICK. REPORT RELAYED VIA WARNING POINT.
May 26, 6:00 PM CDTHAIL 15 E Caryville, WI

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.2 hours before the alert went out and 143 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 2012-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2012-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
858 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
268 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

879 
WUUS53 KMPX 262209
SVRMPX
WIC033-035-091-093-262315-
/O.NEW.KMPX.SV.W.0095.120526T2209Z-120526T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
509 PM CDT SAT MAY 26 2012

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN DUNN COUNTY IN WEST CENTRAL WISCONSIN...
  NORTHWESTERN EAU CLAIRE COUNTY IN WEST CENTRAL WISCONSIN...
  NORTHEASTERN PEPIN COUNTY IN WEST CENTRAL WISCONSIN...
  NORTHEASTERN PIERCE COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 615 PM CDT

* AT 505 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR ELMWOOD...
  OR ABOUT 12 MILES NORTHWEST OF DURAND...AND MOVING EAST TO 
  NORTHEAST AT 30 TO 35 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  MENOMONIE...
  ELMWOOD...
  PLUM CITY...
  ARKANSAW...
  EAU GALLE...
  ROCK FALLS...
  CARYVILLE...
  ELK MOUND...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

THIS STORM HAS A HISTORY OF PRODUCING LARGE DAMAGING HAIL. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

&&

LAT...LON 4464 9156 4462 9222 4483 9227 4496 9169
      4486 9165 4485 9157
TIME...MOT...LOC 2208Z 248DEG 27KT 4474 9213
WIND...HAIL <50MPH 1.00IN

$$

BAP
2 follow-up statements
550 
WWUS53 KMPX 262235
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
535 PM CDT SAT MAY 26 2012

WIC093-262248-
/O.CAN.KMPX.SV.W.0095.000000T0000Z-120526T2315Z/
PIERCE WI-
535 PM CDT SAT MAY 26 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PIERCE COUNTY IS
CANCELLED...

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

LAT...LON 4464 9156 4463 9193 4490 9196 4496 9169
      4486 9165 4485 9157
TIME...MOT...LOC 2233Z 248DEG 27KT 4472 9188

$$

WIC033-035-091-262315-
/O.CON.KMPX.SV.W.0095.000000T0000Z-120526T2315Z/
DUNN WI-EAU CLAIRE WI-PEPIN WI-
535 PM CDT SAT MAY 26 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
PEPIN...NORTHWESTERN EAU CLAIRE AND SOUTHEASTERN DUNN COUNTIES IN
WEST CENTRAL WISCONSIN UNTIL 615 PM CDT...

AT 532 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL.  THIS STORM
WAS LOCATED 6 MILES EAST OF EAU GALLE...OR 7 MILES NORTHEAST OF
DURAND...MOVING EAST AT 30 MPH.

IN ADDITION...AT 515 PM HALF DOLLAR SIZE HAIL WAS REPORTED IN 
ELMWOOD WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  MENOMONIE...ROCK FALLS...CARYVILLE AND ELK MOUND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

&&

LAT...LON 4464 9156 4463 9193 4490 9196 4496 9169
      4486 9165 4485 9157
TIME...MOT...LOC 2233Z 248DEG 27KT 4472 9188
WIND...HAIL <50MPH 1.25IN

$$

BAP
082 
WWUS53 KMPX 262259
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
559 PM CDT SAT MAY 26 2012

WIC033-035-091-262314-
/O.CAN.KMPX.SV.W.0095.000000T0000Z-120526T2315Z/
DUNN WI-EAU CLAIRE WI-PEPIN WI-
559 PM CDT SAT MAY 26 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PEPIN...
NORTHWESTERN EAU CLAIRE AND SOUTHEASTERN DUNN COUNTIES IN WEST
CENTRAL WISCONSIN IS CANCELLED...

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

LAT...LON 4464 9156 4463 9193 4490 9196 4496 9169
      4486 9165 4485 9157
TIME...MOT...LOC 2259Z 248DEG 27KT 4479 9162

$$

BAP

The office that day

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

IssuedProductOfficeCountiesLasted
May 26, 2:15 PM CDTSevere Thunderstorm WarningMPXPepin, Pierce60 min
May 26, 3:09 PM CDTSpecial Weather StatementMPXPierce51 min
May 26, 3:19 PM CDTSpecial Weather StatementMPXPepin41 min
May 26, 3:33 PM CDTSevere Thunderstorm WarningMPXSaint Croix57 min
May 26, 4:10 PM CDTSevere Thunderstorm WarningMPXDunn, Pierce, Saint Croix65 min
May 26, 5:51 PM CDTSevere Thunderstorm WarningMPXDunn, Eau Claire, Pepin24 min
May 26, 6:14 PM CDTSpecial Weather StatementMPXEau Claire46 min
May 26, 6:45 PM CDTSpecial Weather StatementMPXBarron60 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2012Every severe thunderstorm warning in 2012

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.