Alert archive / Minnesota / Tornado Warnings in 1993
Tornado Warning 11, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Aug 9, 1993, 1:03 AM CDT for Clearwater County, Minnesota. It was in force for 27 min.
The area
The counties it named.
The facts
- Issued
- Aug 9, 1993, 1:03 AM CDT (06:03 UTC)
- Expired
- Aug 9, 1993, 1:30 AM CDT
- In force
- 27 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
County Clearwater County, MN
The nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 6.1 hours before the alert went out and 190 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
- 828 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1048 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KINL 090603 TORINL MNC029-090630- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE INTERNATIONAL FALLS MN 103 AM CDT MON AUG 9 1993 THE NATIONAL WEATHER SERVICE IN INTERNATIONAL FALLS HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 130 AM CDT FOR PERSONS IN THE FOLLOWING LOCATION... IN NORTHWEST MINNESOTA ...NORTHERN CLEARWATER COUNTY A POSSIBLE TORNADO WAS REPORTED AT 1255 AM CDT NEAR GULLY IN POLK COUNTY MOVING TO THE EAST INTO CLEARWATER COUNTY. PERSONS IN THE VICINITIES OF GONVICK...BERNER AND CLEARBROOK SHOULD SEEK SHELTER IMMEDIATELY. GULLY IS 30 SOUTHEAST OF THIEF RIVER FALLS. IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A BASEMENT. GET UND?ER A WORKBENCH OR PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS... OR CUSHIONS TO COVER YOUR BODY. AVOID WINDOWS. RJD/TH NNNN
What forecasters said that day
The local office's own words before this tornado 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, Aug 8, 10:42 PM CDT, 2 hours 21 minutes before
NDZ012-013-014-015-016-017-018-MNZ001-006-007-010-011-013-090430- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 1030 PM CDT SUN AUG 8 1993 ...A TORNADO WATCH IS IN EFFECT FOR MUCH OF EASTERN NORTH DAKOTA UNTIL 11 PM CDT... ...A FLASH FLOOD WATCH IS IN EFFECT FOR NORTHEAST NORTH DAKOTA UNTIL 4 AM CDT MONDAY MORNING... AT 1030 PM CDT A STRONG THUNDERSTORM WAS LOCATED 20 MILES NORTH OF DETROIT LAKES MINNESOTA IN MAHNOMEN COUNTY OF NORTHWEST MINNESOTA. THIS STRONG THUNDERSTORM WAS MOVING EAST AT 25 MILES AN HOUR AND HAD PRODUCED VERY HEAVY RAIN AND DANGEROUS LIGHTNING STRIKES. THIS STRONG THUNDERSTORM WILL MOVE INTO CLEARWATER COUNTY OF NORTHWEST MINNESOTA BY 11 PM CDT. ANOTHER STRONG THUNDERSTORM WAS LOCATED 35 MILES NORTHWEST OF GRAND FORKS NORTH DAKOTA. THIS THUNDERSTORM WAS ALSO PRODUCING VERY HEAVY RAIN. MOVEMENT WAS TO THE EAST NORTHEAST AT 25 TO 30 MILES AN HOUR. ^ OTHER WIDELY SCATTERED THUNDERSTORMS...MANY WITH HEAVY RAIN CONTINUED OVER EAST CENTRAL AND NORTHEAST NORTH DAKOTA AND WEST CENTRAL AND NORTHWEST MINNESOTA AND WERE MOVING EAST AT 20 TO 25 MILES AN HOUR. PERSONS IN AND NEAR THE WATCH AREAS AND NEAR ANY OF THESE THUNDERSTORMS SHOULD REMAIN ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AND BE PREPARED TO SEEK SHELTER IF NECESSARY. PLEASE STAY TUNED TO YOUR LOCAL RADIO AND TV STATIONS AS WELL AS NOAA WEATHER RADIO FOR LATEST INFORMATION ON THESE THUNDERSTORMS. ANDERSZEN
Special weather statement, Aug 8, 11:44 PM CDT, 1 hour 19 minutes before
NDZ012-013-014-015-016-017-018-MNZ001-006-007-010-011-013-090530- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 1130 PM CDT SUN AUG 8 1993 ...A FLASH FLOOD WATCH IS IN EFFECT FOR THE NORTWEST CORNER OF MINNESOTA UNTIL 4 AM CDT MONDAY MORNING... ...A FLASH FLOOD WATCH IS IN EFFECT FOR NORTHEAST NORTH DAKOTA UNTIL 4 AM CDT MONDAY MORNING... AT 1130 PM CDT A STRONG THUNDERSTORM WAS LOCATED 40 MILES NORTH OF FARGO NORTH DAKOTA IN TRAILL COUNTY MOVING EAST AT 25 MILES AN AREA. ANOTHER STRONG THUNDERSTORM WAS LOCATED 40 MILES EAST OF FARGO NORTH DAKOTA NEAR DETROIT LAKES MINNESOTA. THESE THUNDERSTORMS WERE MOVING EAST AT 25 TO 30 MILES AN HOUR AND HAD PRODUCED BRIEF HEAVY RAIN. MANY SLOW MOVING THUNDERSTORMS CONTINUED OVER MUCH OF NORTHEAST NORTH DAKOTA AND NORTHWEST MINNESOTA EXPECIALLY IN THE KARLSTAD AREA OF KITTSON COUNTY MINNESOTA. REPORTS OF RAINFALL IN EXCESS OF 4 INCHES HAD BEEN RECEIVED FROM KARLSTAD MINNESOTA. THE GOLF COURSE WAS UNDER WATER AND IT WAS STILL RAINING. LOW LYING AREAS AND SOME URBAN FLOODING OF STREETS AND UNDERPASSES CAN BE EXPECTED. THE THUNDERSTORMS WERE MOVING EAST AT 25 MILES AN HOURS. PERSONS IN AND NEAR THE FLASH FLOOD AREAS SHOULD BE READY FOR QUICK ACTION IN THE EVENT FLOODING DOES HAPPEN. PLEASE STAY TUNED TO YOUR LOCAL RADIO AND TV STATIONS AS WELL AS NOAA WEATHER RADIO FOR LATEST INFORMATION ON THESE THUNDERSTORMS. ANDERSEN
Special weather statement, Aug 8, 11:45 PM CDT, 1 hour 18 minutes before
NDZ012-013-014-015-016-017-018-MNZ001-006-007-010-011-013-090530- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 1130 PM CDT SUN AUG 8 1993 ...A FLASH FLOOD WATCH IS IN EFFECT FOR THE NORTHWEST CORNER OF MINNESOTA UNTIL 4 AM CDT MONDAY MORNING... ...A FLASH FLOOD WATCH IS IN EFFECT FOR NORTHEAST NORTH DAKOTA UNTIL 4 AM CDT MONDAY MORNING... AT 1130 PM CDT A STRONG THUNDERSTORM WAS LOCATED 40 MILES NORTH OF FARGO NORTH DAKOTA IN TRAILL COUNTY MOVING EAST AT 25 MILES AN AREA. ANOTHER STRONG THUNDERSTORM WAS LOCATED 40 MILES EAST OF FARGO NORTH DAKOTA NEAR DETROIT LAKES MINNESOTA. THESE THUNDERSTORMS WERE MOVING EAST AT 25 TO 30 MILES AN HOUR AND HAD PRODUCED BRIEF HEAVY RAIN. MANY SLOW MOVING THUNDERSTORMS CONTINUED OVER MUCH OF NORTHEAST NORTH DAKOTA AND NORTHWEST MINNESOTA EXPECIALLY IN THE KARLSTAD AREA OF KITTSON COUNTY MINNESOTA. REPORTS OF RAINFALL IN EXCESS OF 4 INCHES HAD BEEN RECEIVED FROM KARLSTAD MINNESOTA. THE GOLF COURSE WAS UNDER WATER AND IT WAS STILL RAINING. LOW LYING AREAS AND SOME URBAN FLOODING OF STREETS AND UNDERPASSES CAN BE EXPECTED. THE THUNDERSTORMS WERE MOVING EAST AT 25 MILES AN HOURS. PERSONS IN AND NEAR THE FLASH FLOOD AREAS SHOULD BE READY FOR QUICK ACTION IN THE EVENT FLOODING DOES HAPPEN. PLEASE STAY TUNED TO YOUR LOCAL RADIO AND TV STATIONS AS WELL AS NOAA WEATHER RADIO FOR LATEST INFORMATION ON THESE THUNDERSTORMS. ANDERSEN
Local storm report, Aug 9, 12:00 AM CDT, 1 hour 3 minutes before
STORM REPORTS NATIONAL WEATHER SERVICE FARGO ND 1200 AM CDT SUN AUG 9 1993 OBSERVATIONS TAKEN JUST PRIOR TO MIDNIGHT... TIME EVENT 1150 PM CDT 2.50 INCHES OF RAINFALL AT DRAYTON ND...BY COOP OBSERVER. 1155 PM CDT 5.40 INCHES OF RAINFALL AT KARLSTAD MN...BY HAM OPERATOR. 1145 PM CDT 1.44 INCHES OF RAINFALL IN GRAND FORKS ND...BY UNIVERSITY. DM
Local storm report, Aug 9, 12:00 AM CDT, 1 hour 3 minutes before
STORM REPORTS NATIONAL WEATHER SERVICE FARGO ND 1200 AM CDT SUN AUG 9 1993 OBSERVATIONS TAKEN JUST PRIOR TO MIDNIGHT... TIME EVENT 1150 PM CDT 2.50 INCHES OF RAINFALL AT DRAYTON ND...BY COOP OBSERVER. 1155 PM CDT 5.40 INCHES OF RAINFALL AT KARLSTAD MN...BY HAM OPERATOR. 1145 PM CDT 1.44 INCHES OF RAINFALL IN GRAND FORKS ND...BY UNIVERSITY. DM
Special weather statement, Aug 9, 12:47 AM CDT, 16 minutes before
NDZ012-013-014-015-016-017-018-MNZ001-006-007-010-011-013-090645- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 1240 AM CDT MON AUG 9 1993 ...A FLASH FLOOD WATCH IS IN EFFECT FOR THE NORTHWEST CORNER OF MINNESOTA UNTIL 4 AM CDT MONDAY MORNING... ...A FLASH FLOOD WATCH IS IN EFFECT FOR NORTHEAST NORTH DAKOTA UNTIL 4 AM CDT MONDAY MORNING... AT 1234 AM CDT A STRONG THUNDERSTORM WAS LOCATED 55 MILES NORTHEAST OF FARGO NORTH DAKOTA...IN EXTREME EAST MAHNOMEN COUNTY MINNESOTA. THIS STORM WAS MOVING EAST AT 30 MILES AN HOUR AND IS LIKELY PRODUCING TORRENTIAL RAINFALL AND GUSTY WINDS. OTHER SHOWERS AND THUNDERSTORMS WITH VERY HEAVY RAIN WERE SCATTERED ACROSS MUCH OF THE NORTHWEST QUARTER OF MINNESOTA. THE AREA OF THUNDER STORMS WITH VERY HEAVY RAIN REACHED FROM THE INTERNATIONAL BORDER IN NORTH CENTRAL ROSEAU COUNTY MINNESOTA SOUTH THROUGH THIEF RIVER FALLS AND ON TO ALEXANDRIA. THIS AREA WILL LIKELY RECEIVE TORRENTIAL DOWNPOURS THAT WILL QUICKLY FLOOD LOW LYING AREAS. MOVEMENT WAS EAST AT 30 MILES AN HOUR. PERSONS IN AND NEAR THE FLASH FLOOD AREAS SHOULD BE READY FOR QUICK ACTION IN THE EVENT FLOODING OCCURS. PLEASE STAY TUNED TO YOUR LO|CAL RADIO AND TV STATIONS AS WELL AS NOAA WEATHER RADIO FOR LATEST INFORMATION ON THESE THUNDERSTORMS. BENNETT
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 1:22 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami | 68 min |
| Aug 9, 1:43 AM CDT | Severe Thunderstorm Warning | FGF | Hubbard | 62 min |
Nearby
Tornado Warnings in Minnesota, 1993Every tornado warning in 1993Tornadoes in 1993
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.