Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 21, NWS Twin Cities, MN

March 29, 1998Chippewa County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Mar 29, 1998, 5:55 PM CST for Chippewa County, Wisconsin. It was in force for 65 min. 4 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
Mar 29, 1998, 5:55 PM CST (23:55 UTC)
Expired
Mar 29, 1998, 7:00 PM CST
In force
65 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Chippewa County, WI

The radar

The La Crosse radar (KARX), 139 km from the middle of the area, began a volume at 23:58 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

TimeReportWhereRemark
Mar 29, 6:00 PM CSTHail 0.75Chippewa Falls, WI
Mar 29, 6:05 PM CSTHail 1.75Chippewa Falls, WIAutomobiles damaged.
Mar 29, 6:05 PM CSTHail 0.75Stanley, WI
Mar 29, 6:10 PM CSTHail 1.25Jim Falls, 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.

IssuedProductOfficeLasted
Mar 29, 2:45 PM CSTTornado WatchSPC6 hr
Mar 29, 3:15 PM CSTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.9 hours before the alert went out and 184 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 1998-03-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 1998-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 160 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
551 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
160 m²/s²
0-3 km storm-relative helicity
251 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 292355 RRA
SVRMSP
WIC017-300100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
555 PM CST SUN MAR 29 1998


* SEVERE THUNDERSTORM WARNING FOR
  CHIPPEWA COUNTY - WEST CENTRAL WISCONSIN

* UNTIL 700 PM CST

* SOME LOCATIONS AFFECTED
    CHIPPEWA FALLS
    TILDEN
    BLOOMER
    JIM FALLS

* AT 553 PM CST LOCAL LAW ENFORCEMENT REPORTED A SEVERE STORM WITH
  GOLFBALL HAIL ON THE WEST SIDE OF EAU CLAIRE.  THE STORM WAS
  MOVING NORTHEAST AT 20 MPH.

DAMAGING WINDS AND LARGE HAIL ARE LIKELY.  GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS.


MBK


&

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 29, 3:32 PM CSTSevere Thunderstorm WarningMPXPierce63 min
Mar 29, 3:49 PM CSTSevere Thunderstorm WarningMPXPolk, Saint Croix56 min
Mar 29, 4:09 PM CSTSevere Thunderstorm WarningMPXDunn46 min
Mar 29, 4:19 PM CSTTornado WarningMPXDunn41 min
Mar 29, 4:43 PM CSTSevere Thunderstorm WarningMPXBarron, Chippewa, Rusk62 min
Mar 29, 4:53 PM CSTSevere Thunderstorm WarningMPXPolk37 min
Mar 29, 5:02 PM CSTTornado WarningMPXPepin28 min
Mar 29, 5:28 PM CSTTornado WarningMPXDunn47 min
Mar 29, 5:36 PM CSTSevere Thunderstorm WarningMPXEau Claire39 min
Mar 29, 5:58 PM CSTSevere Thunderstorm WarningMPXDunn, Pepin, Pierce47 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1998Every 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; radar from the NEXRAD Level II archive.