Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 230, NWS Twin Cities, MN

July 25, 2008Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 25, 2008, 3:36 PM CDT for Saint Croix County, Wisconsin. It was in force for 54 min. 7 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: Jul 25, 2008, 3:36 PM CDT (20:36 UTC)
Expired: Jul 25, 2008, 4:30 PM CDT
In force: 54 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon

County Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 76 km from the middle of the area, began a volume at 20:35 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

Time	Report	Where	Remark
Jul 25, 3:40 PM CDT	TSTM WND DMG	3 Se Houlton, WI	TREES AND POWER LINES DOWN.
Jul 25, 3:43 PM CDT	FUNNEL CLOUD	3 Ne Hudson, WI	DEPUTY REPORTS A BRIEF SIGHTING AT CO ROAD A AND DALY ROAD
Jul 25, 3:45 PM CDT	TSTM WND DMG	Hudson, WI	TREES AND POWER LINES DOWN.
Jul 25, 4:23 PM CDT	TSTM WND DMG	River Falls, WI	4 INCH DIAMETER TREE LIMBS DOWN AT HIGHWAY 29 AND 4TH STREET AT RIVER FALLS UNIVERSITY
Jul 25, 4:25 PM CDT	TSTM WND DMG	5 E River Falls, WI	TREE DOWN ACROSS ROAD.
Jul 25, 4:25 PM CDT	TSTM WND DMG	River Falls, WI	AT LEAST SIX TREES DOWN ON ROADS IN RIVER FALLS. TWO TREES DOWN ON VEHICLES.
Jul 25, 4:39 PM CDT	TSTM WND DMG	River Falls, WI	20 INCH LIVE TREE DOWN AT CASCADE AND 6TH STREET

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
Jul 25, 1:19 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.6 hours before the alert went out and 79 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: 1404 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 503 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 61 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 252036
SVRMPX
WIC109-252130-
/O.NEW.KMPX.SV.W.0230.080725T2036Z-080725T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
336 PM CDT FRI JUL 25 2008

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 430 PM CDT

* AT 331 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING NICKEL SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. 
  THIS STORM WAS LOCATED 7 MILES WEST OF SOMERSET...OR ABOUT 14 MILES
  WEST OF NEW RICHMOND...AND MOVING SOUTHEAST AT 25 MPH.

* SOME LOCATIONS INCLUDE...
  SOMERSET...
  HUDSON...
  NEW RICHMOND...
  ROBERTS...
  CYLON...
  WOODVILLE...
  WILSON...
  GLENWOOD CITY...
  BALDWIN...

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

REPORT ANY SIGNIFICANT WIND OR HAIL DAMAGE TO THE NEAREST LAW
ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4486 9262 4492 9274 4495 9276 4503 9276
      4505 9279 4508 9279 4511 9274 4520 9276
      4514 9217 4486 9214
TIME...MOT...LOC 2036Z 304DEG 21KT 4508 9279

$$

TRH

2 follow-up statements

000
WWUS53 KMPX 252100
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
400 PM CDT FRI JUL 25 2008

WIC109-252130-
/O.CON.KMPX.SV.W.0230.000000T0000Z-080725T2130Z/
ST. CROIX WI-
400 PM CDT FRI JUL 25 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR SOUTHERN ST. CROIX COUNTY...

AT 357 PM CDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...
CAPABLE OF PRODUCING NICKEL SIZE HAIL AND DAMAGING WINDS IN EXCESS OF
60 MPH.  THE SEVERE STORM WAS LOCATED 4 MILES SOUTH OF BURKHARDT...OR
ABOUT 4 MILES WEST OF ROBERTS...AND MOVING SOUTHEAST AT 30 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE NORTH HUDSON...HOULTON...
BURKHARDT...BOARDMAN...WOODVILLE...ROBERTS...HUDSON...HAMMOND AND
BALDWIN.

PREPARE IMMEDIATELY FOR DAMAGING WINDS AND LARGE HAIL. SEEK SHELTER
NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

REPORT ANY DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY
TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4486 9214 4486 9262 4493 9275 4495 9276
      4503 9276 4505 9279 4511 9245
TIME...MOT...LOC 2100Z 314DEG 27KT 4495 9261

$$

TRH

000 
WWUS53 KMPX 252117
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
417 PM CDT FRI JUL 25 2008

WIC109-252130-
/O.CON.KMPX.SV.W.0230.000000T0000Z-080725T2130Z/
ST. CROIX WI-
418 PM CDT FRI JUL 25 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR SOUTHERN ST. CROIX COUNTY...

AT 414 PM CDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...
CAPABLE OF PRODUCING NICKEL SIZE HAIL AND DAMAGING WINDS IN EXCESS OF
60 MPH.  THE SEVERE STORM WAS LOCATED 8 MILES SOUTHWEST OF BALDWIN...
OR ABOUT 7 MILES SOUTH OF ROBERTS...AND MOVING SOUTHEAST AT 30 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE WOODVILLE AND BALDWIN.

PREPARE IMMEDIATELY FOR DAMAGING WINDS AND LARGE HAIL. SEEK SHELTER
NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

REPORT ANY DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY
TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4486 9214 4486 9262 4492 9274 4499 9230
      4494 9224 4493 9224 4493 9222
TIME...MOT...LOC 2118Z 315DEG 25KT 4487 9248

$$

TRH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 2:16 PM CDT	Severe Thunderstorm Warning	MPX	Polk	41 min
Jul 25, 3:31 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Chippewa, Dunn	59 min
Jul 25, 3:51 PM CDT	Severe Thunderstorm Warning	MPX	Pierce, Saint Croix	54 min
Jul 25, 4:22 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa	38 min
Jul 25, 4:45 PM CDT	Severe Thunderstorm Warning	MPX	Pepin, Pierce	45 min
Jul 25, 5:35 PM CDT	Severe Thunderstorm Warning	MPX	Pierce	25 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; radar from the NEXRAD Level II archive.