Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 270, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 8, 2001, 3:35 PM CDT for Hubbard County, Minnesota. It was in force for 25 min. No storm report in the archive falls 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.
The facts
- Issued
- Aug 8, 2001, 3:35 PM CDT (20:35 UTC)
- Expired
- Aug 8, 2001, 4:00 PM CDT
- In force
- 25 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Hubbard County, MN
The radar
The Duluth radar (KDLH), 191 km from the middle of the area, began a volume at 20:36 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, 8.6 hours before the alert went out and 212 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.
296 WUUS53 KFGF 082035 SVRFAR MNC057-082100- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 335 PM CDT WED AUG 8 2001 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN HUBBARD COUNTY IN NORTH CENTRAL MINNESOTA. * UNTIL 400 PM CDT. * AT 329 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 4 MILES SOUTHWEST OF DORSET...OR ABOUT 39 MILES EAST OF DETROIT LAKES...MOVEMENT WAS TO THE EAST AT 80 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... CHAMBERLAIN AT 340 PM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4700 9500 4684 9501 4678 9430 4698 9428 $$ 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, 2:02 PM CDT, 1 hour 33 minutes earlier.
Area forecast discussion, Aug 8, 2:02 PM CDT, 1 hour 33 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 202 PM CDT WED AUG 8 2001 ...MAIN FORECAST CHALLENGE THIS PACKAGE IS CONVECTION WITH FROPA AND THEN EXTENT OF COOLDOWN THEREAFTER... .CURRENT OBSERVATIONAL OVERVIEW... 18Z MSAS ANALYSIS DEPICTED DOUBLE BARREL LOW STRUCTURE FROM EXTREME SOUTHEAST MB PROVINCE TO NORTH CENTRAL SOUTH DAKOTA. SCATTERED CONVECTION FIRING AHEAD OF FEATURE AND ASSOCIATED TROUGH FROM EASTERN NORTH DAKOTA INTO MINNESOTA IN CONJUNCTION WITH STRONG SURFACE-850MB WAA PUNCH...PER KMVX RADAR. FURTHER UPSTREAM PARENT COLD FRONT WAS EVIDENT OVER NORTHWEST NORTH DAKOTA WITH GOOD PRESSURE RISES NOTED IN WAKE OF BOUNDARY OVER MONTANA AND SASK PROVINCE. .FORECAST DETAILS... THE GOOD NEWS IS MUCH WELCOME AND PROLONGED RELIEF ON THE WAY IN THE FORM OF A STRONG COLD FRONT. HOWEVER...INITIALLY WE WILL HAVE TO THE PAY THE PIPER IN THE PRICE OF SEVERE STORM THREAT THIS AFTN/EVE AS INCREASING MOISTURE FLUX CONVERGENCE AND MID-LEVEL COOLING ENHANCES CONVECTIVE POTENTIAL IN CONJUNCTION WITH FROPA. SEE SPC SWODY1 FOR FURTHER DETAILS. EXPECT POP THREAT TO END FROM NW TO SE TONIGHT. ALIGNED FLOW AND TIGHTENING PRESSURE GRADIENT SHOULD LEAD TO ACTIVE NORTHWEST FLOW LATE TONIGHT AND THURSDAY AS MUCH COOLER AND LESS HUMID AIR ADVECTS INTO THE REGION. LINGERING CYCLONIC FLOW COUPLED WITH GOOD THICKNESS COOLING PROBABLY WILL LEAD TO DIURNAL DRIVEN BROKEN CU DECK FORMATION ON THURSDAY. THESE FACTORS SHOULD RESULT IN THE MERCURY STRUGGLING TO RISE MUCH OUT OF THE LOW TO MID 70S. WILL MAKE GAME TIME DECISION ON WHETHER TO LINGER HEAT ADVISORY THIS EVENING ACROSS SOUTHEAST ZONES. .EXTENDED...UPPER LOW DROPS SOUTHEAST INTO LOWER HUDSON BAY BY EARLY MONDAY WITH NORTHERN PLAINS UNDER NORTHWEST FLOW REGIME. PATTERN SHIFTS A BIT TOWARD THE END OF THE PERIOD AS ANOTHER LOW PROGGED TO DROP INTO THE PACIFIC NW WITH UPPER RIDGE STARTING TO REBUILD OVER THE CENTRAL US. SEVERAL WEAK WAVES IN THE NORTHWEST FLOW SAT NIGHT AND SUN MAY BRING A FEW SHOWERS. MRF HINTING AT OVERNIGHT CONVECTION MON NIGHT/EARLY TUE...BUT THIS IS A BIG CHANGE FROM YESTERDAY AND WILL LEAVE DRY FOR NOW. MEX/FMR NUMBERS SHOWING BELOW NORMAL TEMPS EARLY TRENDING BACK TOWARD NORMAL LATE IN THE PERIOD WHICH LOOKS REASONABLE. .FGF...HEAT ADVISORY THIS EVENING ALONG AND SOUTH OF A FAR-PKD LINE. BERG/GODON
In the hours before
Special weather statement, Aug 8, 1:15 PM CDT, 2 hours 20 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
Local storm report, Aug 8, 2:45 PM CDT, 50 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
245 PM CDT WED AUG 08 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1250 AM BUFFALO ND 67 MPH TSTM GUST
08/08/01 CASS MEASURED AT NORTH DAKOTA
DOT SITE
0120 AM HOPE ND WIND DAMAGE
08/08/01 STEELE NUMEROUS TREES DOWN
0120 AM HOPE ND .75 INCH HAIL
08/08/01 STEELE
0120 AM HILLSBORO ND 110 MPH TSTM GUST
08/08/01 TRAILL SUSTAINED 100 MPH WINDS
WITH GUST TO 110 MPH
MEASURED BY DAVIS SYSTEM
0120 AM HILLSBORO ND WIND DAMAGE
08/08/01 TRAILL 2400 TREES DOWN ALONG WITH
23 MILES OF POWER LINES IN
TOWN. 7 RAIL CARS TIPPED
OVER NEAR CRYSTAL SUGAR
PLANT
0120 AM GRANDIN ND WIND DAMAGE
08/08/01 CASS 2 LARGE GRAIN BINS DOWN
NUMEROUS TREES DOWN
0130 AM HALSTAD MN WIND DAMAGE
08/08/01 NORMAN NUMEROUS TREES DOWN. ROOF
TORN OFF POTATO WAREHOUSE
0145 AM 4 NE GEORGETOWN MN WIND DAMAGE
08/08/01 CLAY NUMEROUS TREES DOWN
0215 AM MAPLE BAY MN WIND DAMAGE
08/08/01 POLK NUMEROUS TREES DOWN. TREE
FELL ON CABIN. NUMEROUS
BOAT DOCKS TIPPED OVER
WITH BOATS LOOSE ON LAKE
0230 AM ERSKINE MN MOBILE HOME DESTROYED
08/08/01 POLK STORAGE SHED DESTOYED
NUMEROUS TREES DOWN
0230 AM 3 S BROOKS MN WIND DAMAGE
08/08/01 RED LAKE NUMEROUS TREES DOWN
0230 AM 4 SE GARY MN WIND DAMAGE
08/08/01 NORMAN 5 INCH DIAMETER TREE
BRANCHES DOWN
0245 AM OGEMA MN WIND DAMAGE
08/08/01 BECKER 6 INCH DIAMETER TREE
BRANCHES DOWN
0250 AM 7 W DEVILS LAKE ND .75 INCH HAIL
08/08/01 RAMSEY
0300 AM 9 SE LAKE GEORGE MN WIND DAMAGE
08/08/01 HUBBARD 2 FT DIAMETER TREES DOWN
0300 AM TWO INLETS MN WIND DAMAGE
08/08/01 BECKER 2 INCH DIAMETER TREE
BRANCHES DOWN
0315 AM BEMIDJI ARPT MN WIND DAMAGE
08/08/01 BELTRAMI POWER LINES DOWN. KNOCKED
OUT BJI AWOS
0330 AM 2 SE LARIMORE ND WIND DAMAGE
08/08/01 GRAND FORKS 3 INCH DIAMETER TREE
BRANCHES DOWN
NNNNThe 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, 1:59 PM CDT | Severe Thunderstorm Warning | FGF | Clay | 46 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.