Alert archive / Minnesota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 40, NWS Sioux Falls, SD

June 12, 1990Jackson County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 12, 1990, 4:02 PM CDT for Jackson County, Minnesota. It was in force for 28 min.

The area

The counties it named.

The facts

Issued
Jun 12, 1990, 4:02 PM CDT (21:02 UTC)
Expired
Jun 12, 1990, 4:30 PM CDT
In force
28 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Jackson County, MN

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 9.0 hours before the alert went out and 180 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 1990-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 966 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 1990-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 187 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
966 J/kg
Mixed-layer CIN
-164 J/kg
Mixed-layer LCL
781 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
187 m²/s²
0-3 km storm-relative helicity
191 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 122104
SVRFSD
MNC063-122130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
402 PM CDT TUE JUN 12 1990
 
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  430 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTHWEST MINNESOTA
          ...JACKSON
 
AT 4 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM IN EXTREME SOUTH/
EAST NOBLES COUNTY IN SOUTHWEST MINNESOTA MOVING NORTHEAST AT 45 MPH.
SOME CITIES EFFECTED ARE HERON AND LAKEFIELD.
 
 
 
 
THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE
OR NO ADVANCE WARNING SO BE ON THE LOOKOUT.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Jun 12, 2:46 PM CDT, 1 hour 16 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE HURON SD
245 PM CDT TUE JUN 12 1990

STORM DATA FOR MON JUN 11 1990

TIME            COUNTY...LOCATION          CHARACTER OF STORM...DAMAGE

6-630 PM CDT   SULLY COUNTY/SOUTHWEST      NUMEROUS REPORTS OF GOLFBALL
               QUARTER                     SIZE HAIL AND ESTIMATED 60 MPH
                                           WINDS. GRANARY ROOF BLOWN OFF.
                                           CAR AND xHOUSE WINDOWS PUNCHED
                                           OUT. TREES DOWN. COMPLETE
                                           FIELDS WIPED OUT BY HAIL.

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 12, 4:36 PM CDTTornado WarningFSDCottonwood19 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1990Every severe thunderstorm warning in 1990

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.