Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 149, NWS Twin Cities, MN

June 25, 2002Chippewa County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 25, 2002, 8:19 PM CDT for Chippewa County, Wisconsin. It was in force for 41 min. 2 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: Jun 25, 2002, 8:19 PM CDT (01:19 UTC)
Expired: Jun 25, 2002, 9:00 PM CDT
In force: 41 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

County Chippewa County, WI

The radar

The La Crosse radar (KARX), 150 km from the middle of the area, began a volume at 01:26 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
Jun 25, 8:25 PM CDT	Thunderstorm Wind 60 E	Bloomer, WI	Nearly 100 trees down on farm near Highway 64. Roof blown off barn.
Jun 25, 8:25 PM CDT	Hail 1.75	Bloomer, WI	Hail swath extended to Lake Holcombe.

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, 1.3 hours before the alert went out and 174 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 260119
SVRMSP
WIC017-260200-

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 900 PM CDT

* AT 818 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE
  HAIL OVER NEW AUBURN...OR ABOUT 19 MILES NORTHWEST OF CHIPPEWA
  FALLS.  IT WAS MOVING EAST AT 25 MPH.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  BLOOMER.
  CORNELL.
  NEW AUBURN.
  HOLCOMBE.

THIS IS A DANGEROUS STORM WITH LARGE HAIL...STAY INDOORS AWAY FROM
WINDOWS.

LAT...LON 4521 9162 4505 9165 4507 9112 4527 9117

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, 8:34 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, 9:07 PM CDT	Severe Thunderstorm Warning	MPX	Pierce	38 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; radar from the NEXRAD Level II archive.