Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 349, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 22, 2001, 12:45 AM CDT for Kittson County, Minnesota; Pembina County, North Dakota. It was in force for 60 min. 5 reports 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 22, 2001, 12:45 AM CDT (05:45 UTC)
- Expired
- Aug 22, 2001, 1:45 AM CDT
- In force
- 60 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Kittson County, MN, Pembina County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 155 km from the middle of the area, began a volume at 05:44 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 22, 1:09 AM CDT | Hail 1 | Pembina, ND | |
| Aug 22, 1:10 AM CDT | Hail 1.25 | Neche, ND | |
| Aug 22, 1:13 AM CDT | Hail 0.75 | Pembina, ND | |
| Aug 22, 1:43 AM CDT | Hail 1.5 | Northcote, MN | Hail covered the ground. |
| Aug 22, 1:45 AM CDT | Hail 1 | Northcote, MN |
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 00:00Z, 5.8 hours before the alert went out and 311 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
- 1043 J/kg
- Mixed-layer CIN
- -104 J/kg
- Mixed-layer LCL
- 1232 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 3.6
The text
As transmitted, in the capitals the NWS used until 2016.
919 WUUS53 KFGF 220547 SVRFAR MNC069-NDC067-220645- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 1245 AM CDT WED AUG 22 2001 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... PEMBINA COUNTY IN NORTHEAST NORTH DAKOTA AND NORTHWESTERN KITTSON COUNTY IN NORTHWEST MINNESOTA. * UNTIL 145 AM CDT. * AT 1238 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 9 MILES NORTH OF NECHE...OR ABOUT 41 MILES NORTHEAST OF LANGDON...MOVEMENT WAS TO THE SOUTHEAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... NECHE AT 1255 AM CDT... PEMBINA AT 105 AM CDT... HUMBOLDT AT 120 AM AND HALLOCK AT 140 AM CDT. * HAIL UP TO GOLF BALL SIZE IS LIKELY WITH THIS STORM AS IT MOVES SOUTHEAST OUT OF MANITOBA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4918 9786 4874 9791 4856 9721 4894 9671 $$ DTR/06 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 21, 8:20 PM CDT, 4 hours 25 minutes earlier.
Area forecast discussion, Aug 21, 8:20 PM CDT, 4 hours 25 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 820 PM CDT TUE AUG 21 2001 .CURRENT OBSERVATIONAL OVERVIEW... 00Z MSAS ANALYSIS DEPICTED RATHER DIFFUSE AND BENIGN PRESSURE PATTERN OVER REGION WITH LOW PRESSURE OVER CENTRAL SOUTH DAKOTA AND ASSOCIATED INVERTED TROUGH AXIS NORTH INTO WESTERN NORTH DAKOTA. LATEST RADAR MOSAIC INDICATED WIDELY SCATTERED THUNDERSTORMS FIRING IN HIGHLY UNSTABLE ENVIRONMENT FROM JUST WEST OF LANGDON TO SOUTHEAST OF MINOT. .FORECAST DETAILS... EXPECT ACTIVITY TO WEAKEN AFTER DARK CHECK SPC MESOSCALE DISCUSSION FOR FURTHER DETAILS. WILL UPDATE ZONES BY LATE EVENING TO ADDRESS CONVECTIVE TRENDS...OTHERWISE NO MAJOR REVISIONS PLANNED. .FGF...NONE. BERG
In the hours before
Local storm report, Aug 21, 9:00 PM CDT, 3 hours 45 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
900 PM CDT TUE AUG 21 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0815 PM 13 E HANSBORO ND 1.75 INCH HAIL
08/21/01 TOWNER GOLFBALL SIZED HAIL
0820 PM 14 SE HANSBORO ND 1.75 INCH HAIL
08/21/01 TOWNER GOLF BALL SIZED HAIL
0830 PM 2 NW CALVIN ND .75 INCH HAIL
08/21/01 CAVALIER PENNY SIZED HAIL
NNNNThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 10:59 PM CDT | Severe Thunderstorm Warning | FGF | Kittson | 46 min |
| Aug 22, 1:44 AM CDT | Severe Thunderstorm Warning | FGF | Kittson | 61 min |
| Aug 21, 7:28 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Towner | 47 min |
| Aug 21, 8:16 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Towner | 44 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2001Severe Thunderstorm Warnings in North Dakota, 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.