Alert archive / Minnesota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 38, NWS Twin Cities, MN

June 12, 1990Carver County, McLeod County, Sibley County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 12, 1990, 4:45 PM CDT for Carver County, McLeod County, Sibley County, Minnesota. It was in force for 60 min.

The area

The counties it named.

The facts

Issued: Jun 12, 1990, 4:45 PM CDT (21:45 UTC)
Expired: Jun 12, 1990, 5:45 PM CDT
In force: 60 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

Counties Carver County, MN, McLeod County, MN, Sibley 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, 9.8 hours before the alert went out and 41 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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 KMSP 122144
SVRMSP
MNC019-085-143-122245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
445 PM CDT TUE JUN 12 1990
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  545 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN CENTRAL MINNESOTA
          ...CARVER...EASTERN MCLEOD...SIBLEY
 
AT 4.45 PM RADAR INDICATED A SEVERE THUNDERSTORM NEAR SLEEPY EYE IN
BROWN COUNTY ABOUT 30 MILES WEST OF MANKATO MOVING RAPIDLY TO THE
NORTHEAST AT 45 MILES AN HOUR.
 
THIS STORM IS CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS.
TOWNS IN THE PATH OF THIS STORM ARE.........
WINTHROP..GAYLORD..GLENCOE..NORWOOD AND WACONIA MINNESOTA.
 
 
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE. REMEMBER SEVERE THUNDERSTORMS
CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE ADVANCE WARNING
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR:
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 12:38 AM CDT	Severe Thunderstorm Warning	MPX	Pope, Stearns	37 min
Jun 12, 1:10 AM CDT	Severe Thunderstorm Warning	MPX	Morrison, Todd	35 min
Jun 12, 5:01 PM CDT	Severe Thunderstorm Warning	MPX	Scott	44 min
Jun 12, 5:02 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Le Sueur	28 min
Jun 12, 5:34 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Hennepin, Ramsey	41 min
Jun 12, 5:55 PM CDT	Severe Thunderstorm Warning	MPX	Washington	50 min
Jun 12, 6:03 PM CDT	Severe Thunderstorm Warning	MPX	Rice	27 min
Jun 12, 6:13 PM CDT	Severe Thunderstorm Warning	MPX	Dakota	32 min
Jun 12, 6:29 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	31 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1990 Every 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.