Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 263, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 8, 2001, 1:53 AM CDT for 4 counties in Minnesota. It was in force for 67 min. 9 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 8, 2001, 1:53 AM CDT (06:53 UTC)
- Expired
- Aug 8, 2001, 3:00 AM CDT
- In force
- 67 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Becker County, MN, Mahnomen County, MN, Norman County, MN, Polk County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 100 km from the middle of the area, began a volume at 06:53 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, 2:07 AM CDT | Thunderstorm Wind 55 M | Mahnomen, MN | A 63 mph wind gust was measured by a Minnesota DOT RWIS site. |
| Aug 8, 2:15 AM CDT | Thunderstorm Wind | Maple Bay, MN | Numerous trees were blown down and one tree fell on a cabin. Boats, docks, pontoons, and boat lifts were flipped and sunk. |
| Aug 8, 2:20 AM CDT | Thunderstorm Wind | Mahnomen, MN | Large trees were blown down. |
| Aug 8, 2:27 AM CDT | Thunderstorm Wind 75 M | Erskine, MN | An 86 mph wind gust was measured by a Minnesota DOT RWIS site. |
| Aug 8, 2:28 AM CDT | Thunderstorm Wind 52 E | Mc Intosh, MN | 60 mph winds were estimated in McIntosh. |
| Aug 8, 2:30 AM CDT | Thunderstorm Wind | Erskine, MN | A mobile home and storage shed were destroyed and a metal shop was blown apart. Many trees were blown down. |
| Aug 8, 2:30 AM CDT | Thunderstorm Wind | Brooks, MN | Numerous trees were blown down. |
| Aug 8, 2:38 AM CDT | Thunderstorm Wind 64 M | Fosston Muni Arpt, MN | A 74 mph wind gust was measured at the Fosston airport. One airport building was damaged. |
| Aug 8, 2:45 AM CDT | Thunderstorm Wind | Ogema, MN | Tree 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 8, 1:00 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 6.9 hours before the alert went out and 236 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
- 1009 J/kg
- Mixed-layer CIN
- -146 J/kg
- Mixed-layer LCL
- 1873 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
607 WUUS53 KFGF 080654 SVRFAR MNC005-087-107-119-080800- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 153 AM CDT WED AUG 8 2001 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN BECKER COUNTY IN NORTHWEST MINNESOTA... MAHNOMEN COUNTY IN NORTHWEST MINNESOTA... EASTERN NORMAN COUNTY IN NORTHWEST MINNESOTA AND SOUTHERN POLK COUNTY IN NORTHWEST MINNESOTA. * UNTIL 300 AM CDT. * AT 148 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE LEADING EDGE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 29 MILES SOUTHWEST OF THIEF RIVER FALLS TO 24 MILES NORTHWEST OF DETROIT LAKES...MOVEMENT WAS TO THE EAST AT 50 MPH. * SEVERE THUNDERSTORMS WILL BE NEAR... FAITH AT 155 AM... MENTOR AT 205 AM... MAHNOMEN AT 220 AM... ERSKINE AT 220 AM AND OGEMA AT 220 AM CDT. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 AM WEDNESDAY MORNING FOR NORTHWESTERN MINNESOTA AND SOUTHEAST NORTH DAKOTA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 400 AM WEDNESDAY MORNING FOR EASTERN NORTH DAKOTA. LAT...LON 4772 9625 4704 9620 4708 9565 4776 9566 $$ 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 7, 8:25 PM CDT, 5 hours 28 minutes earlier.
Area forecast discussion, Aug 7, 8:25 PM CDT, 5 hours 28 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 825 PM CDT TUE AUG 7 2001 FCST CHALLENGE OVERNIGHT...COVERAGE/INTENSITY AND LOCATION OF CONVECTION. EARLY EVE SFC MAP SHOWS LOW IN SE SASK WITH WARM FRONT INTO FAR SRN MB AND TROUGH THROUGH FAR ERN MT. ACTUAL COLD FRONT FARTHER WEST DROPPING SOUTH THROUGH SRN ALBERTA. SATELLITE ALONG WITH 70H TEMPS WOULD INDICATE NRN EDGE OF CAP EXTENDS JUST NORTH OF A BIS-FAR-BJI LINE. SFC MAP ALSO SHOWS WK TROUGH ALONG THIS AXIS AS WELL. FIRST BATCH OF ELEVATED WEAK CONVECTION THAT WAS NR MINOT LATE THIS AFTN HAS MOVED EAST AND FALLEN APART AS IT APPROACHED WRN CWFA. STRONGER TSRA THAT GOT GOING IN ERN MT NOW MOVING EAST AND LOCATED BTWN MOT/BIS. NO SVR YET. 18Z MESO ETA INDICATES 35-40KT LOW LEVEL JET WILL GET GOING BY 06Z WITH NOSE IN NCNTRL ND AND THEN IT MOVES OVR THE NE ND/NW MN AND SRN IN THE 09-12Z TIME FRAME. THUS EXPECT SOME EVOLUTION OF TSRA IN WRN ND/ERN MT INTO A LARGER COMPLEX AS THE NIGHT PROGRESSES. GOING FCST AND BREAKUP LOOK GOOD WITH HIGHEST POPS NRN ZONES (NORTH OF TROUGH) AND NO POPS IN THE FAR SOUTH WHERE CAP WILL REMAIN. AS FOR THE HEAT ADVISORY...MUCH OF ERN ND AND A FEW PLACES IN NW MN REACHED 105F LATE THIS AFTN...AND WITH DEW PTS CLIMBING INTO THE UPPER 70S OVERNIGHT EXPECT HEAT INDICES TO REMAIN ABV 80F TONIGHT. THUS WILL MAINTAIN CURRENT HEAT ADVISORY LOCATION FOR TONIGHT. WILL RE-ISSUE NEW NPWFAR AND ZONES SHORTLY AFTER 9 PM. .FGF...HEAT ADVISORY ALL CWFA EXCEPT WC MN TONIGHT. RIDDLE
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, 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, 1:59 PM CDT | Severe Thunderstorm Warning | FGF | Clay | 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.