Alert archive / Minnesota / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 50, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 26, 1991, 6:01 AM CDT for Polk County, Minnesota; Grand Forks County, North Dakota. It was in force for 59 min.
The area
The counties it named.
The facts
- Issued
- Jun 26, 1991, 6:01 AM CDT (11:01 UTC)
- Expired
- Jun 26, 1991, 7:00 AM CDT
- In force
- 59 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Polk County, MN, Grand Forks County, ND
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 11.0 hours before the alert went out and 308 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
- 3404 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 1292 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 130 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 9.9
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Jun 26, 1:40 AM CDT, 4 hours 21 minutes before
NDZ012-013-014-015-016-017-018-MNZ001-006-007-010-011-013-260745- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 137 AM CDT WED JUN 26 1991 ...SEVERE THUNDERSTORM WATCH FOR EASTERN NORTH DAKOTA AND PART OF NORTHWEST MINNESOTA UNTIL 500 AM CDT... AT 127 AM CDT...ISOLATED INTENSE THUNDERSTORMS CONTINUED OVER PARTS OF NORTHEAST NORTH DAKOTA AND NORTHWEST MINNESOTA. THE INTENSE THUNDERSTORMS WERE LOCATED 45 MILES WEST OF GRAND FORKS NORTH DAKOTA...20 MILES NORTHWEST AND 50 MILES NORTH OF THIEF RIVER FALLS MINNESOTA. IN ADDITION TO VERY HEAVY RAIN THESE STORMS COULD PRODUCE HAIL...STRONG WIND GUSTS..AND FREQUENT DANGEROUS LIGHTING STRIKES. AT 125 AM CDT PEA TO MARBLE SIZE HAIL FELL AT LAKOTA NORTH DAKOTA...45 MILES WEST OF GRAND FORKS. MOVEMENT WAS NORTH EAST AT 40 MILES AN HOUR. THE STORMS WILL BE NEAR GRAFTON NORTH DAKOTA...MALUNG AND WARROAD MINNESOTA BY 230 AM CDT. IF YOU ARE IN OR NEAR ONE OF THE CITIES OR TOWNS MENTIONED...YOU SHOULD BE ALERT FOR THE POSSIBLITY OF THE ABOVE WEATHER CONDITIONS. KEEP IN MIND THE THE SEVERE THUNDERSTORM WATCH AND STAY TUNED FOR FURTHER UPDATES ON THESE INTENSE THUNDERSTORMS...AS WELL AS... POSSIBLE WARNINGS...ON YOUR LOCAL TV...RADIO...AND NOAA WEATHER RADIO STATIONS. OTHER SCATTERED THUNDERSTORMS AND RAIN SHOWERS WERE ALSO OVER EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA. THE THUNDERSTORMS AND SHOWERS EXTENDED FROM NEAR JAMESTOWN NORTH DAKOTA TO NEAR WARROAD MINNESOTA. THESE WERE ALSO MOVING NORTHEAST AT 40 MILES AN HOUR. DM
Special weather statement, Jun 26, 2:43 AM CDT, 3 hours 18 minutes before
NDZ012-013-014-015-016-017-018-MNZ001-006-007-010-011-013-260845- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 240 AM CDT WED JUN 26 1991 ...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR NORTHWEST MINNESOTA UNTIL 5 AM...BUT HAS BEEN CANCELED FOR EASTERN NORTH DAKOTA... AT 225 AM CDT...INTENSE THUNDERSTORMS...WITH VERY HEAVY RAIN WERE OVER THE CENTRAL AND NORTHERN RED RIVER VALLEY. THE STRONGEST THUNDERSTORM WAS 25 MILES NORTHEAST OF GRAND FORKS IN EXTREME SOUTHWEST MARSHALL COUNTY OF NORTHWEST MINNESOTA NEAR THE TOWNS OF ARGYLE AND OSLO. THIS INTENSE THUNDERSTORM WILL LIKELY PRODUCE SMALL HAIL...VERY HEAVY RAIN ALONG WITH DEADLY LIGHTNING AS IT MOVES EAST AT AT 40 MILES AN HOUR. THIS THUNDERSTORM SHOULD MOVE EAST ACROSS SOUTHERN MARSHALL COUNTY OF NORTHWEST MINNESOTA BY 330 AM. OTHER SCATTERED STRONG THUNDERSTORMS WITH VERY HEAVY RAIN WERE OCCURRING OVER A 15 TO 20 MILE WIDE AREA FROM JUST NORTH OF FARGO/MOORHEAD NORTHWARD THROUGH THE CROOKSTON AREA OF NORTHWEST MINNESOTA. THESE THUNDERSTORMS WERE ALSO MOVING EAST AT 40 MILES AN HOUR AND MUCH OF THIS AREA SHOULD MOVE INTO NORTHWEST MINNESOTA BY 330 AM. PERSONS OVER NORTHWEST MINNESOTA...ESPECIALLY IN AN AREA FROM WARROAD...SOUTHWEST THROUGH THIEF RIVER FALLS AND INTO THE ADA AREA CAN EXPECT THESE THUNDERSTORMS THROUGH 330 AM. OTHER SCATTERED SHOWERS AND THUNDERSHOWERS WERE OCCURRING OVER EXTREME NORTHEAST NORTH DAKOTA AND NORTHWEST MINNESOTA. STAY TUNED FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS ON THIS POTENIALLY SEVERE WEATHER. SPIES
Special weather statement, Jun 26, 3:36 AM CDT, 2 hours 25 minutes before
NDZ012-013-014-015-016-017-018-MNZ001-006-007-010-011-013-260930- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 335 AM CDT WED JUN 26 1991 ...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR A PORTION OF NORTHWEST MINNESOTA UNTIL 5 AM CDT... AT 326 AM CDT...INTENSE THUNDERSTORMS...SOME WITH VERY STRONG WIND... VERY HEAVY RAIN...SMALL HAIL AND DEADLY LIGHTNING WERE MOVING INTO NORTH CENTRAL MINNESOTA. MOST OF THESE THUNDERSTORMS HAD MOVED INTO ROSEAU...NORTHERN BELTRAMI AND LAKE OF THE WOODS COUNTIES OF NORTH CENTRAL MINNESOTA. MOVEMENT WAS EAST AT 45 MILES AN HOUR AND PERSONS OVER THIS AREA AND THE LAKE OF THE WOODS CAN EXPECT THESE STORMS THROUGH 4 AM. THERE WERE A FEW SCATTERED SHOWERS AND THUNDERSHOWERS THAT WERE LINGERING OVER A SMALL PART OF NORTHWEST MINNESOTA BUT AREAL COVERAGE HAD DECREASED CONSIDERABLY SINCE 230 AM. . THIS WILL BE THE LAST STATEMENT ON THIS ACTIVITY MOVING INTO NORTH CENTRAL MINNESOTA UNLESS FURTHER ACTIVITY DEVELOPS. SPIES
Special weather statement, Jun 26, 4:42 AM CDT, 1 hour 19 minutes before
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</html>Local storm report, Jun 26, 5:01 AM CDT, 1 hour before
STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
500 AM CDT WED JUN 26 1991
TIME EVENT
450AM LATE REPORT ON POSSIBLE TORNADO THAT HIT THE CITY OF WARREN
MN IN SOUTHWEST MARSHALL COUNTY_ AROUND 230 AM. NUMEROUS TREES
DOWN ALONG WITH SOME ROOF DAMAGE.Local storm report, Jun 26, 5:41 AM CDT, 20 minutes before
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<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
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</html>The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 2:35 AM CDT | Severe Thunderstorm Warning | FGF | Lake of the Woods, Roseau | 40 min |
| Jun 26, 3:10 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Lake of the Woods, Roseau | 65 min |
| Jun 26, 4:20 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Koochiching, Lake of the Woods | 55 min |
| Jun 26, 7:00 AM CDT | Severe Thunderstorm Warning | FGF | Polk | 60 min |
| Jun 26, 7:32 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Clearwater | 58 min |
| Jun 26, 7:33 AM CDT | Severe Thunderstorm Warning | FGF | Pennington, Red Lake | 47 min |
| Jun 26, 8:35 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Clearwater | 55 min |
| Jun 26, 8:59 AM CDT | Severe Thunderstorm Warning | FGF | Koochiching | 31 min |
| Jun 26, 9:44 AM CDT | Severe Thunderstorm Warning | FGF | Koochiching | 61 min |
| Jun 26, 5:13 AM CDT | Severe Thunderstorm Warning | FGF | Griggs, Steele | 62 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1991Severe Thunderstorm Warnings in North Dakota, 1991Every severe thunderstorm warning in 1991
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.