Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 201, NWS Twin Cities, MN

June 25, 1998Chippewa County, Eau Claire County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 25, 1998, 2:16 AM CDT for Chippewa County, Eau Claire County, Wisconsin. It was in force for 64 min. 7 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 25, 1998, 2:16 AM CDT (07:16 UTC)
Expired: Jun 25, 1998, 3:20 AM CDT
In force: 64 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

Counties Chippewa County, WI, Eau Claire County, WI

What was reported inside it

Time	Report	Where	Remark
Jun 25, 2:36 AM CDT	Thunderstorm Wind 60	Jim Falls, WI	Campers and trees blown over. Estimated windspeed.
Jun 25, 2:36 AM CDT	Thunderstorm Wind 52	Eau Claire, WI
Jun 25, 2:45 AM CDT	Thunderstorm Wind 52	Eau Claire, WI	Trees and power lines down. Estimated windspeed.
Jun 25, 2:51 AM CDT	Thunderstorm Wind 50	Eau Claire, WI	Airport hangar destroyed at Chippewa Valley Airport.
Jun 25, 3:00 AM CDT	Thunderstorm Wind 60	Cadott, WI	Pop-up campers destroyed at local music festival.
Jun 25, 3:02 AM CDT	Thunderstorm Wind 55	Stanley, WI	Farm damaged. Estimated windspeed.
Jun 25, 3:10 AM CDT	Thunderstorm Wind 55	Fall Creek, WI	Trees blown down. Estimated windspeed.

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 24, 9:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 7.3 hours before the alert went out and 183 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: 3921 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 1033 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 250722 COR
SVRMSP
WIC017-035-250820-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
216 AM CDT THU JUN 25 1998

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES/CHANHASSEN HAS
ISSUED A

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

* UNTIL 320 AM CDT

* AT AT 217 AM...DOPPLER RADAR INDICATED A SEVERE STORM WITH
  DAMAGING WINDS FROM MENOMONIE TO DURAND OR ABOUT 20 MILES WEST OF
  EAU CLAIRE.  THE STORM WAS MOVING EAST AT 45 MPH.

* SOME LOCATIONS AFFECTED
    EAU CLAIRE
    CHIPPEWA FALLS
    ALTOONA
    JIM FALLS

THIS IS A DANGEROUS STORM...WITH DAMAGING WINDS.  STAY INDOORS
AWAY FROM WINDOWS.

A TORNADO WATCH IS IN EFFECT.  SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES.
TIPTON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 1:25 AM CDT	Severe Thunderstorm Warning	MPX	Pierce	65 min
Jun 25, 1:25 AM CDT	Severe Thunderstorm Warning	MPX	Saint Croix	65 min
Jun 25, 1:38 AM CDT	Severe Thunderstorm Warning	MPX	Polk	62 min
Jun 25, 1:52 AM CDT	Severe Thunderstorm Warning	MPX	Dunn, Pepin	63 min
Jun 25, 1:56 AM CDT	Severe Thunderstorm Warning	MPX	Barron	64 min
Jun 25, 2:42 AM CDT	Severe Thunderstorm Warning	MPX	Rusk	63 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1998 Every severe thunderstorm warning in 1998

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.