Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 165, NWS Twin Cities, MN

June 18, 1998Brown County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 18, 1998, 8:16 PM CDT for Brown County, Minnesota. It was in force for 64 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
Jun 18, 1998, 8:16 PM CDT (01:16 UTC)
Expired
Jun 18, 1998, 9:20 PM CDT
In force
64 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Brown County, MN

The radar

The Minneapolis radar (KMPX), 114 km from the middle of the area, began a volume at 01:20 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.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.3 hours before the alert went out and 112 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 00:00Z on 1998-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 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 00:00Z on 1998-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -39 square meters per square second.1939587897Sfc1 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
4 J/kg
Mixed-layer CIN
-278 J/kg
Mixed-layer LCL
1924 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
-39 m²/s²
0-3 km storm-relative helicity
-106 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.

134 
WUUS1 KMSP 190139
SVRMSP
MNC015-190220-

BULLETIN - IMMEDIATE BROADCAST REQUESTED...CORRECTION...NO TORNADO
SEVERE THUNDERSTORM WARNING                             WATCH AT ALL
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
816 PM CDT THU JUN 18 1998

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

* SEVERE THUNDERSTORM WARNING FOR...
  BROWN COUNTY IN SOUTH CENTRAL MINNESOTA

* UNTIL 920 PM CDT

* AT 816 PM CDT...DOPPLER RADAR INDICATED A SEVERE STORM WITH LARGE
  HAIL BETWEEN COMFREY AND GODAHL...OR ABOUT 20 MILES SOUTHWEST OF
  NEW ULM..  THE STORM WAS MOVING NORTH AT 20 MPH.

* SOME LOCATIONS AFFECTED
    GODAHL
    LEAVENWORTH
    SLEEPY EYE
    COBDEN

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

TDK

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 7:48 PM CDTSevere Thunderstorm WarningMPXRenville47 min
Jun 18, 8:12 PM CDTSevere Thunderstorm WarningMPXStevens48 min
Jun 18, 8:36 PM CDTSevere Thunderstorm WarningMPXKandiyohi, Meeker, Renville64 min
Jun 18, 10:19 PM CDTSevere Thunderstorm WarningMPXCarver, Wright46 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; radar from the NEXRAD Level II archive.