Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 235, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 31, 2001, 12:46 PM CDT for Beltrami County, Lake of the Woods County, Minnesota. It was in force for 59 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 31, 2001, 12:46 PM CDT (17:46 UTC)
- Expired
- Jul 31, 2001, 1:45 PM CDT
- In force
- 59 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
The radar
The Fargo/Grand Forks radar (KMVX), 202 km from the middle of the area, began a volume at 17:48 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 nearest sounding before it
International Fa, MN (KINL), launched 12:00Z, 5.8 hours before the alert went out and 122 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
- 2851 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 485 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 179 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.8
The text
As transmitted, in the capitals the NWS used until 2016.
922 WUUS53 KFGF 311746 SVRFAR MNC007-077-311845- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 1246 PM CDT TUE JUL 31 2001 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN BELTRAMI COUNTY IN NORTH CENTRAL MINNESOTA AND SOUTHERN LAKE OF THE WOODS COUNTY IN NORTH CENTRAL MINNESOTA. * UNTIL 145 PM CDT. * AT 1243 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 12 MILES WEST OF CARMEL...OR ABOUT 24 MILES NORTHEAST OF THIEF RIVER FALLS...MOVEMENT WAS TO THE NORTHEAST AT 40 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... CARMEL AT 1255 PM CDT... JELLE AT 100 PM CDT... MALCOLM AT 105 PM CDT AND GATES CORNER AT 110 PM CDT. DURING THUNDERSTORMS YOU SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES. IF SEVERE WEATHER IS OBSERVED CONTACT YOUR LOCAL LAW ENFORCEMENT AND ASK THEM TO RELAY YOUR INFORMATION TO THE NATIONAL WEATHER SERVICE. $$ 14 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 Jul 31, 10:30 AM CDT, 2 hours 16 minutes earlier.
Area forecast discussion, Jul 31, 10:30 AM CDT, 2 hours 16 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1030 AM CDT TUE JUL 31 2001 FORECAST CHALLENGE FOR TODAY IS PCPN. CURRENT SATELLITE IMAGERY SHOWS CWFA BASICALLY CLOUDY WITH TSRA IN ND SIDE OF CWFA. KMVX SHOWING TSRA COMPLEX MOVING INTO RED RIVER VALLEY. LATEST MSAS SFC PRESSURE ANALYSIS HAS LOW PRESSURE IN CENTRAL ND...WITH FRONT EXTENDING ALONG A JMS-GFK-HCO LINE. WHEN COMPARING INITIALIZATION CONDITIONS TO MODELS...ETA BEST MATCH. WITH PW'S AROUND 2.O INCH...GOOD 850 MB LLJ...THETA-E RIDGE...AND 700MB TROF APPROACHING...TSRA WITH HEAVY RAIN STILL LOOKS GOOD AS WELL AS SOME SVR. THEREFORE...CURRENT FORECAST PRETTY WELL IN HAND. ONLY MINOR CHANGES NEEDED. .FGF...FLASH FLOOD WATCH FULL CWFA TODAY. NG
In the hours before
Special weather statement, Jul 31, 6:47 AM CDT, 5 hours 59 minutes before
MNZ001>009-013>017-022>024-027-028-311250- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 647 AM CDT TUE JUL 31 2001 ...SEVERE THUNDERSTORM WATCH NUMBER 645 FOR NORTHWEST MINNESOTA HAS BEEN CANCELLED.... THE SEVERE THUNDERSTORMS HAVE MOVED OUT OF NORTHWEST MINNESOTA AND HAVE WEAKENED. THUS THE SEVERE THUNDERSTORM WATCH THAT WAS IN EFFECT UNTIL 8 AM CDT FOR BELTRAMI...LAKE OF THE WOODS...ROSEAU... KITTSON...MARSHALL...PENNINGTON...RED LAKE...POLK...HUBBARD... CLEARWATER...NORMAN...MAHNOMEN...BECKER AND CLAY COUNTIES HAS BEEN CANCELLED. RIDDLE
Special weather statement, Jul 31, 6:59 AM CDT, 5 hours 47 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052>054-311455- SPECIAL WEATHER STATEMENT HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 659 AM CDT TUE JUL 31 2001 ...SCATTERED SEVERE THUNDERSTORMS EXPECTED LATE THIS AFTERNOON AND EVENING FROM THE RED RIVER VALLEY EAST INTO MINNESOTA... SYNOPSIS...LOW PRESSURE WILL MOVE NORTHEAST INTO EASTERN NORTH DAKOTA AND STRENGTHEN THIS AFTERNOON. THE LOW WILL THEN MOVE INTO MANITOBA THIS EVENING WITH A COLD FRONT MOVING EAST INTO MINNESOTA. THE ATMOSPHERE OVER EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA IS VERY UNSTABLE AND VERY MOIST. AS THE LOW AND FRONT INTERACT WITH THIS AIRMASS LATER TODAY AND EARLY EVENING THUNDERSTORMS ARE EXPECTED TO RE-DEVELOP WITH SOME SEVERE THUNDERSTORMS LIKELY. AREA OF CONCERN...THERE IS A SLIGHT RISK OF SEVERE WEATHER EAST OF A PEMBINA TO LAKOTA TO VALLEY CITY NORTH DAKOTA LINE...THEN EAST TO INCLUDE ALL THE RED RIVER VALLEY AND NORTHWEST AND WEST CENTRAL MINNESOTA. TIME...BETWEEN 3 PM AND MIDNIGHT CDT. TYPE OF HAZARD...HEAVY RAIN...STRONG WINDS...AND LARGE HAIL. RIDDLE
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 4:11 AM CDT | Severe Thunderstorm Warning | FGF | Norman, Polk | 34 min |
| Jul 31, 4:11 AM CDT | Severe Thunderstorm Warning | FGF | Pennington, Red Lake | 34 min |
| Jul 31, 4:11 AM CDT | Severe Thunderstorm Warning | FGF | Marshall | 34 min |
| Jul 31, 4:47 AM CDT | Severe Thunderstorm Warning | FGF | Pennington, Polk, Red Lake | 28 min |
| Jul 31, 4:47 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Kittson, Marshall, Roseau | 28 min |
| Jul 31, 4:47 AM CDT | Severe Thunderstorm Warning | FGF | Clearwater | 28 min |
| Jul 31, 5:37 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Lake of the Woods | 38 min |
| Jul 31, 11:21 AM CDT | Severe Thunderstorm Warning | FGF | Polk | 39 min |
| Jul 31, 11:57 AM CDT | Severe Thunderstorm Warning | FGF | Pennington, Polk, Red Lake | 48 min |
| Jul 31, 12:11 PM CDT | Severe Thunderstorm Warning | FGF | Marshall | 64 min |
| Jul 31, 12:43 PM CDT | Severe Thunderstorm Warning | FGF | Pennington | 32 min |
| Jul 31, 1:20 PM CDT | Severe Thunderstorm Warning | FGF | Pennington, Polk | 25 min |
| Jul 31, 1:35 PM CDT | Severe Thunderstorm Warning | FGF | Marshall | 40 min |
| Jul 31, 1:44 PM CDT | Severe Thunderstorm Warning | FGF | Lake of the Woods | 31 min |
| Jul 31, 2:15 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Marshall | 30 min |
| Jul 31, 4:35 PM CDT | Flash Flood Warning | FGF | Marshall | 6 hr |
| Jul 31, 4:39 PM CDT | Flash Flood Warning | FGF | Polk | 4 hr |
| Jul 31, 4:54 PM CDT | Severe Thunderstorm Warning | FGF | Polk | 51 min |
| Jul 31, 5:16 PM CDT | Severe Thunderstorm Warning | FGF | Lake of the Woods, Roseau | 44 min |
| Jul 31, 5:39 PM CDT | Tornado Warning | FGF | Beltrami, Lake of the Woods | 36 min |
| Jul 31, 6:05 PM CDT | Flash Flood Warning | FGF | Beltrami, Lake of the Woods, Marshall, Roseau | 6 hr |
| Jul 31, 6:13 PM CDT | Severe Thunderstorm Warning | FGF | Clay | 32 min |
| Jul 31, 6:15 PM CDT | Tornado Warning | FGF | Lake of the Woods | 30 min |
| Jul 31, 6:23 PM CDT | Flash Flood Warning | FGF | Pennington, Polk, Red Lake | 6 hr |
| Jul 31, 6:24 PM CDT | Severe Thunderstorm Warning | FGF | Norman | 36 min |
| Jul 31, 6:54 PM CDT | Severe Thunderstorm Warning | FGF | Polk, Red Lake | 36 min |
| Jul 31, 6:58 PM CDT | Severe Thunderstorm Warning | FGF | Norman | 32 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.