Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 55, NWS Twin Cities, MN

June 14, 1994Sherburne County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 14, 1994, 8:56 PM CDT for Sherburne County, Minnesota. It was in force for 49 min.

The area

The counties it named.

The facts

Issued
Jun 14, 1994, 8:56 PM CDT (01:56 UTC)
Expired
Jun 14, 1994, 9:45 PM CDT
In force
49 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Sherburne County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 1.9 hours before the alert went out and 67 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 1994-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4090 joules per kilogram.LCLEL10008507005003002001001 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 1994-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 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
4090 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
1595 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
146 m²/s²
Significant tornado parameter
0.9
Supercell composite
13.9

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KSTC 150156 RRA
SVRSTC
MNC141-150245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA
856 PM CDT TUE JUN 14 1994
 
THE NATIONAL WEATHER SERVICE IN ST CLOUD MINNESOTA  HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  950 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN CENTRAL MINNESOTA
 
   ...SHERBURNE COUNTY
 
AT 850 PM RADAR INDICATED A SEVERE THUNDERSTORM MOVING OUT OF MEEKER
COUNTY AND INTO SHERBURNE COUNTY. THE STORM IS MOVING TO THE NORTHEAST
AT 25 MPH AND HAS A HISTORY OF 3/4 INCH HAIL. CITIES IN THE PATH OF THIS
STORM INCLUDE CLEAR LAKE...BECKER...BIG LAKE...SANTIAGO..AS WELL AS
THE VICINITY OF THE ST CLOUD AIRPORT.
 
 
YOU SHOULD MOVE INSIDE A STRONG BUILDING.  DO NOT STAND BY WINDOWS.
DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY
UNTIL THE STORM HAS PASSED.
 
 
PARKIN
NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 8:30 PM CDTSevere Thunderstorm WarningMPXMeeker45 min
Jun 14, 8:54 PM CDTSevere Thunderstorm WarningMPXWright51 min
Jun 14, 9:04 PM CDTSevere Thunderstorm WarningMPXChippewa, Yellow Medicine56 min
Jun 14, 9:26 PM CDTSevere Thunderstorm WarningMPXMille Lacs34 min
Jun 14, 9:33 PM CDTSevere Thunderstorm WarningMPXIsanti35 min
Jun 14, 9:48 PM CDTSevere Thunderstorm WarningMPXSwift57 min
Jun 14, 9:54 PM CDTSevere Thunderstorm WarningMPXRenville51 min
Jun 14, 11:19 PM CDTSevere Thunderstorm WarningMPXBenton, Sherburne, Stearns56 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1994Every severe thunderstorm warning in 1994

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.