Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 232, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Oct 8, 1997, 10:39 PM CDT for Beltrami County, Clearwater County, Hubbard County, Minnesota. It was in force for 21 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
- Oct 8, 1997, 10:39 PM CDT (03:39 UTC)
- Expired
- Oct 8, 1997, 11:00 PM CDT
- In force
- 21 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Beltrami County, MN, Clearwater County, MN, Hubbard County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 169 km from the middle of the area, began a volume at 03:41 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Oct 8, 7:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 3.7 hours before the alert went out and 174 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
- 37 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 942 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 191 m²/s²
- 0-3 km storm-relative helicity
- 220 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 Oct 8, 8:30 PM CDT, 2 hours 9 minutes earlier.
Area forecast discussion, Oct 8, 8:30 PM CDT, 2 hours 9 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 830 PM CDT WED OCT 8 1997 STG SHRTWV NR PIR MOVG RPDLY TWD MN THIS EVENING. CDFNT ALG RRV HAS BEEN ACTIVE WITH A FAIR NMBR OF DAMAGING WND RPTS. SFC TEMPS STILL NR 70 WITH DWPNTS IN THE LWR 60S. STG TO SVR TSTMS PSBL FOR NEXT FEW HRS OVR NWRN MN AS AREA OF TSMTS IN SD MOVS TWD DTL AREA. WL DROP BOX BEHIND THE CDFNT AS IT MOVS ACRS MN PTN OF CWFA BY 06Z. RST OF FCST LOOKS GD WITH MUCH COOLER AIR MOVG IN AFTR 06Z. NO SET UPDATE TIME TNGT WL AMD AS FNT MOVS E. BELLES
In the hours before
Special weather statement, Oct 8, 9:07 PM CDT, 1 hour 32 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052-053-082315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 909 PM CDT WED OCT 8 1997 SEVERE THUNDERSTORM WATCH NUMBER 744 IS NO LONGER IN EFFECT IN NORTH DAKOTA. THE SEVERE THUNDERSTORMS WATCH REMAINS IN EFFECT IN WESTERN MINNESOTA. BELLES
Special weather statement, Oct 8, 9:09 PM CDT, 1 hour 30 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052-053-082315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 909 PM CDT WED OCT 8 1997 SEVERE THUNDERSTORM WATCH NUMBER 744 IS NO LONGER IN EFFECT IN NORTH DAKOTA. THE SEVERE THUNDERSTORMS WATCH REMAINS IN EFFECT IN WESTERN MINNESOTA. BELLES
Special weather statement, Oct 8, 9:30 PM CDT, 1 hour 9 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052-053-090230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 930 PM CDT WED OCT 8 1997 SEVERE THUNDERSTORM WATCH NUMBER 744 IS NO LONGER IN EFFECT FOR THE FOLLOWING COUNTIES IN MINNESOTA. KITTSON WESTERN MARSHALL WESTERN POLK CLAY NORMAN WILKIN
Special weather statement, Oct 8, 9:31 PM CDT, 1 hour 8 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052-053-090230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 930 PM CDT WED OCT 8 1997 bSEVERE THUNDERSTORM WATCH NUMBER 744 IS NO LONGER IN EFFECT FOR THE FOLLOWING COUNTIES IN MINNESOTA. KITTSON WESTERN MARSHALL WESTERN POLK CLAY NORMAN WILKIN
Local storm report, Oct 8, 10:25 PM CDT, 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
1025 PM CDT WED OCT 8 1997
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0920 PM 20SE FERGUS FALLS MN WIND DAMAGE
10/08/97 OTTER TAIL TREES DOWNLocal storm report, Oct 8, 10:28 PM CDT, 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
1025 PM CDT WED OCT 8 1997
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0920 PM 20SE FERGUS FALLS MN WIND DAMAGE
10/08/97 OTTER TAIL TREES DOWNThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 8, 7:11 PM CDT | Severe Thunderstorm Warning | FGF | Norman, Polk | 49 min |
| Oct 8, 7:37 PM CDT | Severe Thunderstorm Warning | FGF | Polk | 38 min |
| Oct 8, 10:39 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Clearwater, Hubbard | 36 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1997Every severe thunderstorm warning in 1997
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; radar from the NEXRAD Level II archive.