Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 153, NWS Twin Cities, MN

June 25, 2002Pierce County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 25, 2002, 9:07 PM CDT for Pierce County, Wisconsin. It was in force for 38 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: Jun 25, 2002, 9:07 PM CDT (02:07 UTC)
Expired: Jun 25, 2002, 9:45 PM CDT
In force: 38 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

County Pierce County, WI

What was reported inside it

Time	Report	Where	Remark
Jun 25, 9:50 PM CDT	Hail 0.75	Ellsworth, WI

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 25, 6:45 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 2.1 hours before the alert went out and 95 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: 4448 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1086 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 2.4
Supercell composite: 16.3

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 260207
SVRMSP
WIC093-260245-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
905 PM CDT TUE JUN 25 2002

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  PIERCE COUNTY IN WEST CENTRAL WISCONSIN

* UNTIL 945 PM CDT

* AT 905 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE
  HAIL AND DAMAGING WINDS...EXTENDING FROM SPRING VALLEY TO 5 MILES
  SOUTHWEST OF ELLSWORTH.. IT WAS MOVING EAST AT 35 MPH. 

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  ELLSWORTH.
  ELMWOOD.
  PLUM CITY.
  ROCK ELM.

LARGE HAIL AND DAMAGING WINDS ARE LIKELY WITH THIS STORM. TAKE COVER
IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS.

LAT...LON 4471 9263 4460 9255 4458 9213 4485 9215
          4484 9236

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 8:00 PM CDT	Tornado Warning	MPX	Polk, Saint Croix	30 min
Jun 25, 8:19 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa	41 min
Jun 25, 8:34 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Dunn, Polk, Saint Croix	56 min
Jun 25, 9:00 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa	60 min
Jun 25, 9:08 PM CDT	Severe Thunderstorm Warning	MPX	Rusk	52 min
Jun 25, 9:29 PM CDT	Severe Thunderstorm Warning	MPX	Dunn	46 min
Jun 25, 9:37 PM CDT	Flash Flood Warning	MPX	Chippewa	4 hr
Jun 25, 9:49 PM CDT	Severe Thunderstorm Warning	MPX	Pierce	41 min
Jun 25, 9:53 PM CDT	Severe Thunderstorm Warning	MPX	Eau Claire, Pepin	37 min
Jun 25, 10:23 PM CDT	Flash Flood Warning	MPX	Dunn	3 hr
Jun 25, 10:50 PM CDT	Flash Flood Warning	MPX	Eau Claire, Pepin	3 hr

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2002 Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.