Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 26, NWS Twin Cities, MN

April 6, 1998Steele County, Waseca County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 6, 1998, 6:29 PM CDT for Steele County, Waseca County, Minnesota. It was in force for 46 min. 2 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
Apr 6, 1998, 6:29 PM CDT (23:29 UTC)
Expired
Apr 6, 1998, 7:15 PM CDT
In force
46 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Steele County, MN, Waseca County, MN

What was reported inside it

TimeReportWhereRemark
Apr 6, 6:35 PM CDTHail 0.75Waseca, MN
Apr 6, 6:40 PM CDTHail 0.75Meriden, MN

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 nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.5 hours before the alert went out and 93 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 1998-04-06Temperature 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 1998-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 218 square meters per square second.193958Sfc1 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
892 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
218 m²/s²
0-3 km storm-relative helicity
264 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.

188 
WUUS1 KMSP 062331 RRA
SVRMSP
MNC147-161-070015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
629 PM CDT MON APR 6 1998


* SEVERE THUNDERSTORM WARNING FOR
  WESTERN STEELE COUNTY - SOUTH CENTRAL MINNESOTA
  EASTERN WASECA COUNTY - SOUTH CENTRAL MINNESOTA

* UNTIL 715 PM CDT

* SOME LOCATIONS AFFECTED
    AREAS BETWEEN NEW RICHLAND AND WASECA
    LEMOND
    MERIDEN

* AT 628 PM CDT DOPPLER RADAR INDICATED A SEVERE STORM WITH LARGE
  HAIL 8 MILES SOUTH OF WASECA...OR ABOUT 25 MILES SOUTHEAST OF
  MANKATO.  THE STORM WAS MOVING NORTH TO NORTHEAST AT 15 MPH.

THIS IS A DANGEROUS STORM.  STAY INDOORS AWAY FROM WINDOWS.


TDK

Nearby

Severe Thunderstorm Warnings in Minnesota, 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.