Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 30, NWS Twin Cities, MN

May 25, 2008Polk County, Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at May 25, 2008, 5:47 PM CDT for Polk County, Saint Croix County, Wisconsin. It was in force for 58 min. 8 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 25, 2008, 5:47 PM CDT (22:47 UTC)
Expired: May 25, 2008, 6:45 PM CDT
In force: 58 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon

Counties Polk County, WI, Saint Croix County, WI

What was reported inside it

Time	Report	Where	Remark
May 25, 5:55 PM CDT	HAIL 3	Star Prairie, WI
May 25, 5:55 PM CDT	HAIL 4.25	1 N Burkhardt, WI
May 25, 6:02 PM CDT	HAIL 1	1 S Star Prairie, WI
May 25, 6:04 PM CDT	HAIL 1.75	2 Nne New Richmond, WI	REPORT TAKEN AT NEW RICHMOND AIRPORT.
May 25, 6:06 PM CDT	HAIL 1	New Richmond, WI
May 25, 6:06 PM CDT	HAIL 1.75	1 Nw New Richmond, WI
May 25, 6:18 PM CDT	HAIL 2	2 Ene Cylon, WI
May 25, 6:42 PM CDT	HAIL 0.75	4 N Hammond, 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.

Issued	Product	Office	Lasted
May 25, 2:04 PM CDT	Tornado Watch PDS	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.8 hours before the alert went out and 88 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: 58 J/kg
Mixed-layer CIN: -266 J/kg
Mixed-layer LCL: 641 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 45 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -3.1

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 252247
SVRMPX
WIC095-109-252345-
/O.NEW.KMPX.SV.W.0030.080525T2247Z-080525T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
547 PM CDT SUN MAY 25 2008

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FAR SOUTHERN POLK COUNTY IN NORTHWEST WISCONSIN...
  NORTHERN ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 645 PM CDT

* AT 546 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...
  CAPABLE OF PRODUCING LARGE DAMAGING HAIL UP TO GOLF BALL SIZE AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 7 MILES
  NORTHWEST OF SOMERSET...AND MOVING EAST AT 51 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SOMERSET...
  NEW RICHMOND...
  AMERY...
  STAR PRAIRIE...
  DEER PARK...
  EAST FARMINGTON...

THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...WHICH CAN
SIGNIFICANTLY DAMAGE WINDOWS...SIDING AND VEHICLES. DAMAGING WINDS
ARE ALSO EXPECTED...WHICH WILL UPROOT TREES AND DOWN POWER LINES.
SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT SUNDAY EVENING FOR
EAST CENTRAL MINNESOTA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
900 PM CDT SUNDAY EVENING FOR SOUTHEASTERN MINNESOTA AND NORTHWESTERN
WISCONSIN.

LAT...LON 4498 9216 4504 9277 4511 9276 4511 9274
      4516 9274 4517 9275 4531 9274 4531 9219
TIME...MOT...LOC 2247Z 273DEG 44KT 4518 9279

$$

RAH/TRH

1 follow-up statement

000 
WWUS53 KMPX 252305
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
604 PM CDT SUN MAY 25 2008

WIC095-109-252345-
/O.CON.KMPX.SV.W.0030.000000T0000Z-080525T2345Z/
POLK WI-ST. CROIX WI-
604 PM CDT SUN MAY 25 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR NORTHERN ST. CROIX AND SOUTHERN POLK COUNTIES...

AT 600 PM CDT...SOFTBALL SIZE HAIL WAS REPORTED IN STAR PRAIRIE
WITH THIS STORM.

AT 603 PM CDT.... THIS SEVERE THUNDERSTORM WAS LOCATED NEAR STAR
PRAIRIE...OR ABOUT 8 MILES EAST OF SOMERSET...AND MOVING EAST AT 50
MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE WANDEROOS...LITTLE FALLS...
HUNTINGTON...HOULTON...FOREST...EMERALD...EAST FARMINGTON...
DERONDA...CYLON AND BOARDMAN.

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT SUNDAY EVENING FOR
EAST CENTRAL MINNESOTA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
900 PM CDT SUNDAY EVENING FOR SOUTHEASTERN MINNESOTA AND NORTHWESTERN
WISCONSIN.

LAT...LON 4498 9216 4504 9277 4511 9276 4511 9274
      4516 9274 4517 9275 4531 9274 4531 9219
TIME...MOT...LOC 2304Z 273DEG 44KT 4517 9250

$$

RAH/TRH

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 5:09 PM CDT	Severe Thunderstorm Warning	MPX	Polk	51 min
May 25, 5:13 PM CDT	Tornado Warning	MPX	Polk, Saint Croix	47 min
May 25, 5:42 PM CDT	Severe Thunderstorm Warning	MPX	Barron	48 min
May 25, 5:50 PM CDT	Tornado Warning	MPX	Barron, Dunn	40 min
May 25, 6:24 PM CDT	Severe Thunderstorm Warning	MPX	Dunn	51 min
May 25, 6:26 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Pierce	49 min
May 25, 6:28 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Rusk	62 min
May 25, 6:51 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Dunn, Eau Claire	54 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2008 Every severe thunderstorm warning in 2008

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.