Alert archive / Minnesota / Tornado Warnings in 1991

Tornado Warning 6, NWS Grand Forks, ND

June 25, 1991Roseau County, Minnesota

NWS Grand Forks, ND issued this tornado warning at Jun 25, 1991, 3:18 PM CDT for Roseau County, Minnesota. It was in force for 42 min.

The area

The counties it named.

The facts

Issued: Jun 25, 1991, 3:18 PM CDT (20:18 UTC)
Expired: Jun 25, 1991, 4:00 PM CDT
In force: 42 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

County Roseau County, MN

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 8.3 hours before the alert went out and 186 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 394 J/kg
Mixed-layer CIN: -228 J/kg
Mixed-layer LCL: 791 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 93 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

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 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, Jun 25, 9:49 AM CDT, 5 hours 29 minutes before

NDZ012-013-014-015-016-017-018-MNZ001-006-007-010-011-013-251530-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE FARGO ND
949 AM CDT TUE JUN 25 1991

 ...THE THUNDERSTORM WARNING FOR CLAY COUNTY MINNESOTA HAS EXPIRED...
AT 931 AM CDT...STRONG THUNDERSTORMS STILL REMAINED IN CLAY AND BECKER
COUNTIES OF WEST CENTRAL MINNESOTA...20 MILES NORTH OF DETROIT LAKES...
AND IN THE HAWLEY...HITTERDAL...AND FELTON AREAS...25 TO 30 MILES NORTH-
EAST OF FARGO.

AT 905 AM CDT...63 MPH WINDS AND 3/4 INCH HAIL WAS REPORTED 1 MILE EAST
OF DILWORTH MINNESOTA...OR ABOUT 10 MILES EAST OF FARGO.  AT 915 AM CDT
HAIL UP TO 11/4 INCHES IN DIAMETER FELL AT AVERILL MINNESOTA...15 MILES
NORTHEAST OF FARGO...DAMAGING A CAR RADIATOR.

THESE STORMS DID NOT APPEAR TO BE IN THE SEVERE CATAGORY AT 930 AM...BUT
COULD STRENGTHEN AND BECOME SEVERE IN JUST A MATTER OF MINUTES.  SHOULD
THREATENING WEATHER APPROACH YOUR AREA...TAKE SHELTER IN A STRONG...
REINFORCED BUILDING.
 .
OTHER SHOWERS AND THUNDERSTORMS...A FEW WITH VERY HEAVY RAIN...WERE
LOCATED OVER THE NORTHEAST CORNER OF NORTH DAKOTA...AND THE NORTHWEST
CORNER OF MINNESOTA.  THE STRONGEST STORMS WERE IN AND NEAR THE
PEMBINA AREA OF OEXTREME NORTHEAST NORTH DAKOTA.

THESE SHOWERS AND THUNDERSTORMS APPEARED TO BE DEVELOPING TO THE SOUTH
...AND WERE MOVING EAST AT 25 MILES AN HOUR.

Local storm report, Jun 25, 9:51 AM CDT, 5 hours 27 minutes before

STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
945 AM CDT TUE JUN 25 1991

TIME      EVENT
905AM     DIME SIZE HAIL AND 63 MPH WIND...1 MILE EAST OF DILWORTH MN..
          5 MILES EAST OF FARGO.

915UAM     CLAY COUNTY MN SHERIFF REPORTED HAIL 3/4 TO 11/4 INCH DIAMETER
          AT AVERILL MN...15 MILES NORTHEAST OF FARGO. DAMAGED CAR
          RADIATOR.

Local storm report, Jun 25, 11:10 AM CDT, 4 hours 8 minutes before

STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
1110 AM CDT TUE JUN 25 1991

TIME      EVENT
1055AM    DIME SIZE HAIL NORTH OF HALLOCK MINNESOTA...KITTSON COUNTY
          RPTD BY MN HWY PATROL

Special weather statement, Jun 25, 11:38 AM CDT, 3 hours 40 minutes before

NDZ012-013-014-015-016-017-018-MNZ001-006-007-010-011-013-251730-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE FARGO ND
1138 AM CDT TUE JUN 25 1991

 ...THE THUNDERSTORM WARNING FOR KITTSON COUNTY MINNESOTA HAS EXPIRED...
AT 1126 AM CDT...STRONG THUNDERSTORMS CONTINUED OVER THE NORTHWEST
CORNER OF MINNESOTA...20 MILES SOUTHEAST OF PEMBINA...NEAR THE TOWN OF
HALLOCK.  DIME SIZE HAIL WAS REPORTED NORTH OF THE HALLOCK AREA AROUND
1055 AM CDT.  HALLOCK RECEIVED SOME SMALL HAIL AND .69 INCH OF RAIN AS
THE STORMS MOVED THROUGH.

OTHER SHOWERS AND THUNDERSTORMS WERE LOCATED FROM 35 MILES SOUTHWEST OF
PEMBINA...NEAR THE TOWN OF GRAFTON...AND EXTENDED EAST TO WARROAD...IN
NOR*THERN MINNESOTA.  MOVEMENT OF THESE STORMS WAS EAST AT 25 TO 30 MPH.

THE NORTHWEST CORNER OF MINNESOTA WILL LIKELY SEE SHOWERS AND THUNDER-
STORMS UNTIL 130 OR 200 PM CDT.

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 25, 8:28 AM CDT	Severe Thunderstorm Warning	FGF	Clay	62 min
Jun 25, 10:08 AM CDT	Severe Thunderstorm Warning	FGF	Kittson	67 min
Jun 25, 3:16 PM CDT	Severe Thunderstorm Warning	FGF	Koochiching	59 min
Jun 25, 4:01 PM CDT	Tornado Warning	FGF	Lake of the Woods, Roseau	44 min

Nearby

Tornado Warnings in Minnesota, 1991 Every tornado warning in 1991 Tornadoes 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.