Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 269, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 8, 2001, 1:59 PM CDT for Clay County, Minnesota. It was in force for 46 min. 1 report came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Aug 8, 2001, 1:59 PM CDT (18:59 UTC)
- Expired
- Aug 8, 2001, 2:45 PM CDT
- In force
- 46 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Clay County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 94 km from the middle of the area, began a volume at 19:01 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 8, 2:00 PM CDT | Thunderstorm Wind | Borup, MN | Branches were blown down. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
International Fa, MN (KINL), launched 12:00Z, 7.0 hours before the alert went out and 258 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
- 389 J/kg
- Mixed-layer CIN
- -148 J/kg
- Mixed-layer LCL
- 1452 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 130 m²/s²
- 0-3 km storm-relative helicity
- 141 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
The text
As transmitted, in the capitals the NWS used until 2016.
801 WUUS53 KFGF 081859 SVRFAR MNC027-087-107-081945- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 159 PM CDT WED AUG 8 2001 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN CLAY COUNTY IN NORTHWEST MINNESOTA... MAHNOMEN COUNTY IN NORTHWEST MINNESOTA AND SOUTHEASTERN NORMAN COUNTY IN NORTHWEST MINNESOTA. * UNTIL 245 PM CDT. * AT 155 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES WEST OF SYRE...OR ABOUT 29 MILES NORTHEAST OF FARGO...MOVEMENT WAS TO THE EAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... SYRE AT 205 PM... FLOM AT 215 PM... FAITH AT 220 PM AND MAHNOMEN AT 230 PM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4723 9649 4706 9642 4730 9567 4742 9567 $$ 7 NNNN
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 Aug 8, 9:50 AM CDT, 4 hours 9 minutes earlier.
Area forecast discussion, Aug 8, 9:50 AM CDT, 4 hours 9 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 950 AM CDT WED AUG 8 2001 .CURRENT OBSERVATIONAL OVERVIEW... 14Z MSAS ANALYSIS DEPICTED LOW PRESSURE OVER EXTREME SOUTHEAST MB PROVINCE WITH ASSOCIATED COLD FRONT DRAPED ACROSS NORTHWEST NORTH DAKOTA. FURTHER UPSTREAM HIGH PRESSURE WAS SITUATED OVER ALBERTA PROVINCE WITH STRONG PRESSURE RISES NOTED AHEAD OF FEATURE OVER NORTHERN MONTANA. LATEST KMVX RADAR INDICATED NARROW BAND OF CONVECTION FROM NORTHWEST MINNESOTA TO SOUTHWEST NORTH DAKOTA IN CONJUNCTION WITH SURFACE TO 850MB WARM ADVECTION PUNCH. .FORECAST DETAILS... CURRENT FORECAST LOOKS IN BALLPARK WITH RESPECT TO ONGOING AND IMPENDING SCATTERED CONVECTION THREAT. PLAN ON ONLY SOME COSMETIC CHANGES FOR TIMING DETAILS AND WORDING. .FGF...HEAT ADVISORY ALONG AND SOUTH OF A FAR-PKD LINE. BERG
In the hours before
Special weather statement, Aug 8, 1:15 PM CDT, 44 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052>054-082045- SPECIAL WEATHER STATEMENT HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 115 PM CDT WED AUG 8 2001 ...RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF EASTERN NORTH DAKOTA...NORTHWEST AND WEST CENTRAL MINNESOTA LATE THIS AFTERNOON AND EVENING... SYNOPSIS...A COLD FRONT ACROSS NORTHWEST NORTH DAKOTA WILL PUSH EAST THIS AFTERNOON. WITH VERY MOIST AND UNSTABLE AIR IN PLACE THIS FRONT WILL BE THE FOCUS FOR THUNDERSTORM DEVELOPMENT LATE THIS AFTERNOON CONTINUING INTO THE EVENING HOURS. AREA OF CONCERN...A SLIGHT RISK OF SEVERE THUNDERSTORMS IS EXPECTED ACROSS EASTERN NORTH DAKOTA AND NORTHWEST AND WEST CENTRAL MINNESOTA. TIME...START AFTER 3 PM AND SHOULD MOVE OUT OF THE AREA BY MIDNIGHT. TYPE OF HAZARD...MAINLY LARGE HAIL AND DAMAGING WINDS. LOCALLY HEAVY RAIN IS ALSO POSSIBLE. BERG
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 1:16 AM CDT | Severe Thunderstorm Warning | FGF | Norman, Polk | 44 min |
| Aug 8, 1:39 AM CDT | Severe Thunderstorm Warning | FGF | Clay | 21 min |
| Aug 8, 1:53 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Mahnomen, Norman, Polk | 67 min |
| Aug 8, 2:08 AM CDT | Severe Thunderstorm Warning | FGF | Red Lake | 52 min |
| Aug 8, 2:28 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Beltrami, Clearwater, Hubbard | 62 min |
| Aug 8, 1:59 PM CDT | Severe Thunderstorm Warning | FGF | Mahnomen, Norman | 46 min |
| Aug 8, 3:35 PM CDT | Severe Thunderstorm Warning | FGF | Hubbard | 25 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2001Every severe thunderstorm warning in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.