Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 301, NWS Twin Cities, MN

August 19, 1998Chippewa County, Lac qui Parle County, Swift County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 19, 1998, 6:44 PM CDT for Chippewa County, Lac qui Parle County, Swift County, Minnesota. It was in force for 61 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 19, 1998, 6:44 PM CDT (23:44 UTC)
Expired
Aug 19, 1998, 7:45 PM CDT
In force
61 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Chippewa County, MN, Lac qui Parle County, MN, Swift County, MN

The watch it was issued in

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

IssuedProductOfficeLasted
Aug 19, 3:15 PM CDTSevere Thunderstorm WatchSPC6 hr
Aug 19, 5:45 PM CDTSevere Thunderstorm WatchSPC3 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.7 hours before the alert went out and 176 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 1998-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 585 joules per kilogram.LCLLFCEL10008507005003002001001 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 1998-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 265 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
585 J/kg
Mixed-layer CIN
-256 J/kg
Mixed-layer LCL
475 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
265 m²/s²
0-3 km storm-relative helicity
317 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.4

Open this sounding in Storm Lab

The text

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

824 
WUUS1 KMSP 192345 RRA
SVRMSP
MNC023-073-151-200045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
644 PM CDT WED AUG 19 1998

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

* SEVERE THUNDERSTORM WARNING FOR...
  CHIPPEWA COUNTY IN WEST CENTRAL MINNESOTA
  LAC QUI PARLE COUNTY IN WEST CENTRAL MINNESOTA
  SWIFT COUNTY IN WEST CENTRAL MINNESOTA

* UNTIL 745 PM CDT

* AT 640 PM CDT ...DOPPLER RADAR INDICATED A SEVERE STORM JUST NORTH
  OF ROSEN...OR ABOUT 11 MILES SOUTH OF ORTONVILLE.  THE STORM WAS
  MOVING EAST AT 25 MPH.

* SOME LOCATIONS AFFECTED
    MADISON
    MONTEVIDEO
    APPLETON
    WATSON
    DAWSON

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


JUSKIE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 3:10 PM CDTSevere Thunderstorm WarningMPXDouglas35 min
Aug 19, 3:44 PM CDTSevere Thunderstorm WarningMPXDouglas, Pope61 min
Aug 19, 4:00 PM CDTSevere Thunderstorm WarningMPXTodd50 min
Aug 19, 4:08 PM CDTSevere Thunderstorm WarningMPXMorrison47 min
Aug 19, 5:34 PM CDTTornado WarningMPXMorrison31 min
Aug 19, 5:42 PM CDTFlash Flood WarningMPXPope, Stevens2 hr
Aug 19, 5:58 PM CDTTornado WarningMPXStearns32 min
Aug 19, 6:30 PM CDTSevere Thunderstorm WarningMPXStearns65 min
Aug 19, 6:55 PM CDTFlash Flood WarningMPXSwift3 hr
Aug 19, 6:58 PM CDTTornado WarningMPXStearns47 min

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; the sounding from the Mesonet's radiosonde archive.