Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 96, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 5, 1994, 11:39 PM CDT for Jackson County, Minnesota. It was in force for 51 min.
The area
The counties it named.
The facts
- Issued
- Jul 5, 1994, 11:39 PM CDT (04:39 UTC)
- Expired
- Jul 6, 1994, 12:30 AM CDT
- In force
- 51 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Jackson County, MN
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 4.7 hours before the alert went out and 280 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.
- Mixed-layer CAPE
- 3368 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1281 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 8.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFSD 060441 SVRFSD MNC063-060530- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 1139 PM CDT TUE JUL 5 1994 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1230 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHWEST MINNESOTA ...JACKSON COUNTY AT 1139 PM CDT...WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES SOUTHWEST OF SPAFFORD...OR 10 MILES EAST OF WORTHINGTON...IN EXTREME SOUTHWESTERN JACKSON COUNTY. THIS STORM WAS MOVING TO THE NORTHEAST AT 25 TO 30 MPH. IF YOU ARE IN THE PATH OF THIS STORM...YOU SHOULD GET TO A REINFORCED SHELTER. A SEVERE THUNDERSTORM $PRODUCES WINDS IN EXCESS OF 60 MPH...HAIL 3/4 INCH OR LARGER...DEADLY LIGHTNING...AND HEAVY RAIN THAT CAN QUICKLY FLOOD A LOW LYING AREA. MG
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
Special weather statement, Jul 5, 10:06 PM CDT, 1 hour 33 minutes before
SDZ068>070-060405- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1004 PM CDT TUE JUL 5 1994 ...A SEVERE THUNDERSTORM WATCH CONTINUED IN EFFECT UNTIL 2 AM CDT FOR THE EXTREME SOUTHEAST SOUTH DAKOTA COUNTIES ALONG THE MISSOURI RIVER... THUNDERSTORMS WERE MOVING NORTHEAST ACROSS UNION COUNTY SOUTH DAKOTA WITH THE POTENTIAL FOR SEVERE WEATHER. NO THUNDERSTORMS WERE OCCURRING FROM TYNDALL IN BON HOMME COUNTY ACROSS YANKTON COUNTY TO VERMILLION IN CLAY COUNTY. THE MOVEMENT OF THE STORMS MAKES IT APPEAR PROBABLE THAT THUNDERSTORMS WILL PASS THEM BY...BUT THE SEVERE THUNDERSTORM WATCH CONTINUES FOR NOW. UMLAND
Special weather statement, Jul 5, 10:45 PM CDT, 54 minutes before
IAZ012-060445- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1042 PM CDT TUE JUL 5 1994 THE SEVERE THUNDERSTORM WARNING FOR SIOUX COUNTY IN NORTHWEST IOWA EXPIRED AT 1045 PM AND WILL NOT BE REISSUED AT THIS TIME. STRONG THUNDERSTORMS CONTINUED TO DEVELOP AND THEN DIMINISH IN INTENSITY AS THEY MOVED NORTHEAST AT 20 MPH ACROSS THE COUNTY. ONE OF THE STRONGEST STORMS AT 1040 PM WAS ABOUT 40 MILES SOUTHEAST OF SIOUX FALLS NEAR HAWARDEN IOWA. PEOPLE IN SIOUX COUNTY SHOULD KEEP IN MIND THAT A SEVERE THUNDERSTORM WATCH CONTINUES FOR NORTHWEST IOWA INCLUDING THEIR AREA THROUGH 2 AM. UMLAND
Special weather statement, Jul 5, 11:01 PM CDT, 38 minutes before
SDZ068-069-060500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1059 PM CDT TUE JUL 5 1994 SEVERE THUNDERSTORM WATCH FOR EXTREME SOUTHEAST SOUTH DAKOTA ALONG THE MISSOURI RIVER HAS BEEN CANCELED FOR BON HOMME AND YANKTON COUNTY AREAS. THE SEVERE THAUNDERSTORM WATCH DOES CONTINUE IN EFEECT FOR CLAY AND UNION COUNTIES UNTIL 2 AM. THUNDERSTORMS CONTINUED TO MOVE ACROSS UNION COUNTY AND MAY YET BUILD BACK INTO CLAY COUNTY. THESE THUNDERSTORMS CONTINUE TO HAVE THE POTENTIAL TO PRODUCE SEVERE WEATHER. SOME OF THESE STORMS MAY CONTAIN SMALL HAIL...GUSTY WINDS...DEADLY LIGHTNING AND VERY HEAVY DOWNPOURS OF RAIN. UMLAND
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.