Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 79, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Sep 11, 1994, 2:07 PM CDT for Cass County, North Dakota; Clay County, Norman County, Minnesota. It was in force for 68 min.
The area
The counties it named.
The facts
- Issued
- Sep 11, 1994, 2:07 PM CDT (19:07 UTC)
- Expired
- Sep 11, 1994, 3:15 PM CDT
- In force
- 68 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Clay County, MN, Norman County, MN, Cass County, ND
The nearest sounding before it
Aberdeen, SD (KHON), launched 12:00Z, 7.1 hours before the alert went out and 272 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
- 117 J/kg
- Mixed-layer CIN
- -591 J/kg
- Mixed-layer LCL
- 1336 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 225 m²/s²
- 0-3 km storm-relative helicity
- 239 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS1 KFAR 111907 RRA
SVRFAR
NDC017-MNC027-107-112015-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FARGO ND
207 PM CDT SUN SEP 11 1994
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 315 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE EAST CENTRAL PART OF NORTH DAKOTA
NORTHWEST CASS...
IN THE NORTHWEST PART OF MINNESOTA
NORTHERN CLAY...NORMAN...
AT 155 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM OVER NORTHWEST
CASS COUNTY...25 MILES NORTHWEST OF FARGO NORTH DAKOTA MOVING
EAST NORTHEAST AT 25 TO 30 MPH. GOLF BALL SIZED HALL WAS REPORTED
WITH THIS THUNDERSTORM AS IT PASSED ARTHUR NORTH DAKOTA...CASS
COUNTY.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS 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.
ANDERSENWhat 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, Sep 11, 11:36 AM CDT, 2 hours 31 minutes before
NDZ007-008-016-026>030-038-039-048-049-051>053-MNZ001>004- 007>009-013>017-022>024-027>032-039>041-047-111730- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 1125 AM CDT SUN SEP 11 1994 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR MUCH OF EASTERN NORTH DAKOTA AND PART OF NORTHWEST MINNESOTA UNTIL 4PM CDT... AT 1125 AM CDT A LINE OF STRONG THUNDERSTORMS EXTENDED FROM NEAR GRAND FORKS NORTH DAKOTA SOUTHWEST TO 20 MILES NORTHEAST OF JAMESTOWN NORTH DAKOTA WITH THE STRONGEST THUNDERSTORMS LOCATED 15 MILES SOUTHWEST OF GRAND FORKS AND NEAR COLGATE NORTH DAKOTA. THESE THUNDERSTORMS WERE MOVING NORTH NORTHEAST AND WILL MOVE INTO THE MAYVILLE/PORTLAND AND GRAND FORKS NORTH DAKOTA AREAS BY NOON. THESE THUNDERSTORMS COULD PRODUCE VERY HEAVY RAIN...HAIL...GUST WINDS AND FREQUENT DANGEROUS LIGHTNING STRIKES. OTHER SHOWERS AND THUNDERSTORMS CONTINUED OVER EAST CENTRAL...NORTHEAST AND SOUTHEAST NORTH DAKOTA AND NORTHWEST MINNESOTA. ALL OF THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 25 TO 30 MPH. PERSONS NEAR ANY OF THESE THUNDERSTORMS AND IN THE WATCH AREA SHOULD REMAIN ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR FURTHER INFORMATION ABOUT THESE STORMS. ANDERSEN
Local storm report, Sep 11, 12:25 PM CDT, 1 hour 42 minutes before
STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
1225 PM CDT SUN SEP 11 1994
TIME EVENT
1155 AM CDT GRAND FORKS AIR FORCE BASE REPORTED PEA SIZE HAIL IN
SOUTHEASTERN STEELE COUNTY IN EAST CENTRAL NORTH DAKOTA.
1215 PM CDT THE CLIFFORD NORTH DAKOTA COOPERATIVE OBSERVER REPORTED
PEA SIZE HAIL AND APPROXIMATELY 1 1/2 INCHES OF RAIN IN
30 MINUTES IN SOUTHWESTERN TRAILL COUNTY OF EAST CENTRAL
NORTH DAKOTA.
JEURISSENSpecial weather statement, Sep 11, 12:25 PM CDT, 1 hour 42 minutes before
NDZ007-008-016-026>030-038-039-048-049-051>053-MNZ001>004- 007>009-013>017-022>024-027>032-039>041-047-111830- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 1225 PM CDT SUN SEP 11 1994 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR MUCH OF EASTERN NORTH DAKOTA AND PART OF NORTHWEST MINNESOTA UNTIL 4PM CDT... AT 1225 PM CDT A LINE OF STRONG THUNDERSTORMS EXTENDED FROM 10 MILES SOUTH OF GRAND FORKS NORTH DAKOTA SOUTHWEST TO NEAR TOWER CITY NORTH DAKOTA. THE STRONGEST THUNDERSTORMS WERE LOCATED NEAR GALESBURG IN TRAILL COUNTY AND JUST EAST OF TOWER CITY IN CASS COUNTY. THESE THUNDERSTORMS WERE MOVING EAST AT 25 MPH AND WILL BE OVER EASTERN TRAILL COUNTY AND MOVING INTO THE FARGO NORTH DAKOTA AREA BY 1PM CDT. THESE THUNDERSTORMS COULD PRODUCE VERY HEAVY RAIN...HAIL...GUSTY WINDS AND FREQUENT DANGEROUS LIGHTNING STRIKES. OTHER SHOWERS AND THUNDERSTORMS CONTINUED OVER EAST CENTRAL...NORTHEAST AND SOUTHEAST NORTH DAKOTA AND NORTHWEST MINNESOTA. ALL OF THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 25 TO 30 MPH. PERSONS NEAR ANY OF THESE THUNDERSTORMS AND IN THE WATCH AREA SHOULD REMAIN ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR FURTHER INFORMATION ABOUT THESE STORMS. ANDERSEN
Special weather statement, Sep 11, 12:33 PM CDT, 1 hour 34 minutes before
NDZ007-008-016-026>030-038-039-048-049-051>053-MNZ001>004- 007>009-013>017-022>024-027>032-039>041-047-111830- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 1225 PM CDT SUN SEP 11 1994 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR MUCH OF EASTERN NORTH DAKOTA AND PART OF NORTHWEST MINNESOTA UNTIL 4PM CDT... AT 1225 PM CDT A LINE OF STRONG THUNDERSTORMS EXTENDED FROM 10 MILES SOUTH OF GRAND FORKS NORTH DAKOTA SOUTHWEST TO NEAR TOWER CITY NORTH DAKOTA. THE STRONGEST THUNDERSTORMS WERE LOCATED NEAR GALESBURG IN TRAILL COUNTY AND JUST EAST OF TOWER CITY IN CASS COUNTY. THESE THUNDERSTORMS WERE MOVING EAST AT 25 MPH AND WILL BE OVER EASTERN TRAILL COUNTY AND MOVING INTO THE FARGO NORTH DAKOTA AREA BY 1PM CDT. THESE THUNDERSTORMS COULD PRODUCE VERY HEAVY RAIN...HAIL...GUSTY WINDS AND FREQUENT DANGEROUS LIGHTNING STRIKES. OTHER SHOWERS AND THUNDERSTORMS CONTINUED OVER EAST CENTRAL...NORTHEAST AND SOUTHEAST NORTH DAKOTA AND NORTHWEST MINNESOTA. ALL OF THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 25 TO 30 MPH. PERSONS NEAR ANY OF THESE THUNDERSTORMS AND IN THE WATCH AREA SHOULD REMAIN ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS. STAY TUNED TO NO&AA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR FURTHER INFORMATION ABOUT THESE STORMS. ANDERSEN
Special weather statement, Sep 11, 1:25 PM CDT, 42 minutes before
NDZ007-008-016-026>030-038-039-048-049-051>053-MNZ001>004- 007>009-013>017-022>024-027>032-039>041-047-111930- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 125 PM CDT SUN SEP 11 1994 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR MUCH OF EASTERN NORTH DAKOTA AND PART OF NORTHWEST MINNESOTA UNTIL 4PM CDT... AT 125 PM CDT AN AREA OF STRONG THUNDERSTORMS EXTENDED FROM JUST SOUTH OF THE THIEF RIVER FALLS MINNESOTA AREA SOUTHWEST TO JUST SOUTH OF JAMESTOWN NORTH DAKOTA WITH THE STRONGEST THUNDERESTORM LOCATED NORTH OF TOWER CITY NORTH DAKOTA. THESE THUNDERSTORMS WERE MOVING EAST NORTHEAST AT 25 TO 30 MPH AND WILL MOVE THROUGH THE ADA AND MAHNOMEN MINNESOTA AREAS AND OVER NORTHERN CASS COUNTY OF NORTH DAKOTA BY 2PM. THESE THUNDERSTORMS COULD PRODUCE VERY HEAVY RAIN...HAIL...GUSTY WINDS AND FREQUENT DANGEROUS LIGHTNING STRIKES. OTHER SHOWERS AND THUNDERSTORMS CONTINUED OVER EAST CENTRAL...NORTHEAST AND SOUTHEAST NORTH DAKOTA AND NORTHWEST MINNESOTA. ALL OF THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 25 TO 30 MPH. PERSONS NEAR ANY OF THESE THUNDERSTORMS AND IN THE WATCH AREA SHOULD REMAIN ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR FURTHER INFORMATION ABOUT THESE STORMS. ANDERSEN
Special weather statement, Sep 11, 1:38 PM CDT, 29 minutes before
NDZ007-008-016-026>030-038-039-048-049-051>053-MNZ001>004- 007>009-013>017-022>024-027>032-039>041-047-111930- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 125 PM CDT SUN SEP 11 1994 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR MUCH OF EASTERN NORTH DAKOTA AND PART OF NORTHWEST MINNESOTA UNTIL 4PM CDT... AT 125 PM CDT AN AREA OF STRONG THUNDERSTORMS EXTENDED FROM JUST SOUTH OF THE THIEF RIVER FALLS MINNESOTA AREA SOUTHWEST TO JUST SOUTH OF JAMESTOWN NORTH DAKOTA WITH THE STRONGEST THUNDERESTORM LOCATED NORTH OF TOWER CITY NORTH DAKOTA. THESE THUNDERSTORMS WERE MOVING EAST NORTHEAST AT 25 TO 30 MPH AND WILL MOVE THROUGH THE ADA AND MAHNOMEN MINNESOTA AREAS AND OVER NORTHERN CASS COUNTY OF NORTH DAKOTA BY 2PM. THESE THUNDERSTORMS COULD PRODUCE VERY HEAVY RAIN...HAIL...GUSTY WINDS AND FREQUENT DANGEROUS LIGHTNING STRIKES. OTHER SHOWERS AND THUNDERSTORMS CONTINUED OVER EAST CENTRAL...NORTHEAST AND SOUTHEAST NORTH DAKOTA AND NORTHWEST MINNESOTA. ALL OF THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 25 TO 30 MPH. PERSONS NEAR ANY OF THESE THUNDERSTORMS AND IN THE WATCH AREA SHOULD REMAIN ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR FURTHER INFORMATION ABOUT THESE STORMS. ANDERSEN
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 11, 3:22 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Mahnomen | 68 min |
| Sep 11, 3:22 PM CDT | Severe Thunderstorm Warning | FGF | Polk | 68 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1994Severe Thunderstorm Warnings in North Dakota, 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.