Alert archive / Minnesota / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 194, NWS Grand Forks, ND

July 25, 1999Clearwater County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 25, 1999, 3:11 PM CDT for Clearwater County, Minnesota. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 25, 1999, 3:11 PM CDT (20:11 UTC)
Expired: Jul 25, 1999, 3:45 PM CDT
In force: 34 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

County Clearwater County, MN

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 25, 11:00 AM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 8.2 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.

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2231 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 144 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 25, 2:55 PM CDT, 16 minutes earlier.

Area forecast discussion, Jul 25, 2:55 PM CDT, 16 minutes before

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In the hours before

Special weather statement, Jul 25, 9:42 AM CDT, 5 hours 29 minutes before

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052-053-251510-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
942 AM CDT SUN JUL 25 1999

...SEVERE THUNDERSTORM WATCH CANCELLED...

SEVERE THUNDERSTORM WATCH NUMBER 535 FOR NORTHEAST NORTH DAKOTA AND
NORTHWEST MINNESOTA HAS BEEN CANCELLED. HOWEVER...THUNDERSTORMS ARE
STILL EXPECTED ACROSS THE REGION THROUGH THE DAY. PLEASE CONTINUE
TfO MONITOR YOUR LOCAL RADIO AND TELEVISION STATIONS OR NOAA WEATHER
RADIO FOR THE LATEST INFORMATION CONCERNING THUNDERSTORMS THAT MAY
MOVE INTO YOUR AREA.

KENNEDY

Local storm report, Jul 25, 10:29 AM CDT, 4 hours 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
1029 AM CDT SUN JUL 25 1999

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1000 AM    3SE INKSTER               ND   .75 INCH HAIL
07/25/99   GRAND FORKS

Special weather statement, Jul 25, 1:48 PM CDT, 1 hour 23 minutes before

MNZ001-004-005-007-008-013-NDZ027-029-030-038-251945-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
148 PM CDT SUN JUL 25 1999

...THE TORNADO WATCH HAS BEEN CANCELLED FOR A PORTION OF
NORTHEASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA...

TORNADO WATCH 586 IS NO LONGER IN EFFECT FOR THE FOLLOWING COUNTIES
IN NORTH DAKOTA...

GRAND FORKS...TRAILL...BARNES...STEELE

AND IS NO LONGER IN EFFECT IN NORTHWEST MINNESOTA 8FOR...

PENNINGTON...KITTSON...MARSHALL...WESTERN POLK...ROSEAU

BELLES

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 9:55 AM CDT	Severe Thunderstorm Warning	FGF	Grand Forks	35 min
Jul 25, 10:31 AM CDT	Severe Thunderstorm Warning	FGF	Barnes	34 min
Jul 25, 10:37 AM CDT	Severe Thunderstorm Warning	FGF	Walsh	33 min
Jul 25, 12:09 PM CDT	Severe Thunderstorm Warning	FGF	Cass	26 min
Jul 25, 12:23 PM CDT	Tornado Warning	FGF	Cass	32 min
Jul 25, 12:37 PM CDT	Severe Thunderstorm Warning	FGF	Barnes	33 min
Jul 25, 12:48 PM CDT	Tornado Warning	FGF	Cass	32 min
Jul 25, 12:55 PM CDT	Severe Thunderstorm Warning	FGF	Ransom	35 min
Jul 25, 1:31 PM CDT	Severe Thunderstorm Warning	FGF	Ransom	34 min
Jul 25, 11:31 AM CDT	Severe Thunderstorm Warning	FGF	Marshall	29 min
Jul 25, 11:52 AM CDT	Severe Thunderstorm Warning	FGF	Roseau	33 min
Jul 25, 11:59 AM CDT	Severe Thunderstorm Warning	FGF	Marshall	36 min
Jul 25, 12:26 PM CDT	Severe Thunderstorm Warning	FGF	Pennington	34 min
Jul 25, 12:32 PM CDT	Severe Thunderstorm Warning	FGF	Marshall	33 min
Jul 25, 12:44 PM CDT	Severe Thunderstorm Warning	FGF	Polk	36 min
Jul 25, 1:09 PM CDT	Tornado Warning	FGF	Clay	36 min
Jul 25, 1:18 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Mahnomen, Norman	32 min
Jul 25, 1:52 PM CDT	Tornado Warning	FGF	Mahnomen	33 min
Jul 25, 1:59 PM CDT	Severe Thunderstorm Warning	FGF	Clay	36 min
Jul 25, 2:11 PM CDT	Severe Thunderstorm Warning	FGF	Becker	34 min
Jul 25, 2:41 PM CDT	Tornado Warning	FGF	Becker	34 min
Jul 25, 2:54 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami	36 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1999 Every severe thunderstorm warning in 1999

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.