Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 232, NWS Twin Cities, MN

July 25, 2008Chippewa County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 25, 2008, 4:22 PM CDT for Chippewa County, Wisconsin. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 25, 2008, 4:22 PM CDT (21:22 UTC)
Expired: Jul 25, 2008, 5:00 PM CDT
In force: 38 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon

County Chippewa County, WI

The radar

The La Crosse radar (KARX), 122 km from the middle of the area, began a volume at 21:25 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.

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, 9.4 hours before the alert went out and 197 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 252122
SVRMPX
WIC017-252200-
/O.NEW.KMPX.SV.W.0232.080725T2122Z-080725T2200Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 500 PM CDT

* AT 418 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING PENNY SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. 
  THIS STORM WAS LOCATED NEAR JIM FALLS...OR ABOUT 8 MILES NORTHEAST
  OF CHIPPEWA FALLS...AND MOVING SOUTHEAST AT 30 MPH.

* SOME LOCATIONS INCLUDE...
  LAKE WISSOTA...
  CADOTT...
  BOYD...
  STANLEY...

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.

LAT...LON 4486 9109 4485 9111 4485 9116 4499 9144
      4514 9131 4499 9090 4487 9091 4486 9092
TIME...MOT...LOC 2122Z 305DEG 30KT 4501 9125

$$

TRH

2 follow-up statements

000 
WWUS53 KMPX 252140
SVSMPX

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

WIC017-252200-
/O.CON.KMPX.SV.W.0232.000000T0000Z-080725T2200Z/
CHIPPEWA WI-
440 PM CDT FRI JUL 25 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR SOUTHEASTERN CHIPPEWA COUNTY...

AT 439 PM CDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...
CAPABLE OF PRODUCING PENNY SIZE HAIL AND DAMAGING WINDS IN EXCESS OF
60 MPH.  THE SEVERE STORM WAS LOCATED NEAR CADOTT...OR ABOUT 2 MILES
SOUTH OF CADOTT...AND MOVING SOUTHEAST AT 35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BATEMAN...STANLEY...LAKE
WISSOTA...CADOTT AND BOYD.

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 4485 9116 4493 9131 4493 9134 4508 9115
      4505 9107 4505 9103 4499 9090 4487 9091
      4486 9092
TIME...MOT...LOC 2140Z 305DEG 30KT 4492 9113

$$

TRH

000 
WWUS53 KMPX 252152
SVSMPX

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

WIC017-252203-
/O.EXP.KMPX.SV.W.0232.000000T0000Z-080725T2200Z/
CHIPPEWA WI-
453 PM CDT FRI JUL 25 2008

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CHIPPEWA COUNTY
EXPIRES AT 500 PM CDT...

SEVERE STORMS WERE ABOUT TO MOVE OUT OF THE COUNTY. HOWEVER...MORE
THUNDERSTORMS WERE DEVELOPING IN THE AREA...REMAIN ALERT FOR
ADDITIONAL WARNINGS.

LAT...LON 4485 9116 4493 9131 4493 9134 4508 9115
      4505 9107 4505 9103 4499 9090 4487 9091
      4486 9092
TIME...MOT...LOC 2153Z 305DEG 30KT 4486 9101

$$

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, 3:36 PM CDT	Severe Thunderstorm Warning	MPX	Saint Croix	54 min
Jul 25, 3:51 PM CDT	Severe Thunderstorm Warning	MPX	Pierce, Saint Croix	54 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.