Alert archive / Minnesota / Tornado Warnings in 1994

Tornado Warning 1, NWS Twin Cities, MN

April 26, 1994Washington County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Apr 26, 1994, 12:11 PM CDT for Washington County, Minnesota. It was in force for 19 min.

The area

The counties it named.

The facts

Issued
Apr 26, 1994, 12:11 PM CDT (17:11 UTC)
Expired
Apr 26, 1994, 12:30 PM CDT
In force
19 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Washington County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 5.2 hours before the alert went out and 60 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 1994-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1994-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -315 square meters per square second.1939587897117136156Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
511 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
-315 m²/s²
0-3 km storm-relative helicity
-952 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 261713
TORMSP
MNC163-261730-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
1211 PM CDT TUE APR 26 1994
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1230 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL MINNESOTA
 
   ...NORTHERN WASHINGTON COUNTY
 
AT 1205 PM A TORNADO WAS REPORTED NEAR THE COMMUNITIES OF MAHTOMEDI AND
STILLWATER...ABOUT 20 MILES NORTHEAST OF ST PAUL. THE TORNADO WAS MOVING
NORTH AT 30 MILES AN HOUR.
 
PERSONS IN THE STILLWATER AND MAHTOMEDI SHOULD SEEK SHELTER NOW.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR STAIRWAY TO^ AVOID COLLAPSING
WALLS.  IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN A CENTRAL
ROOM SUCH AS A CLOSET OR BATHROOM ON THE LOWEST FLOOR.
USE BLANKETS...PILLOWS...OR CUSHIONS TO COVER YOUR BODY.
 DWE

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 25, 7:20 PM CDTSevere Thunderstorm WarningMPXBrown, Nicollet25 min

Nearby

Tornado Warnings in Minnesota, 1994Every tornado warning in 1994Tornadoes 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.