Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 83, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 20, 2001, 6:08 PM CDT for Becker County, Clay County, Otter Tail County, Minnesota. It was in force for 37 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
- Jun 20, 2001, 6:08 PM CDT (23:08 UTC)
- Expired
- Jun 20, 2001, 6:45 PM CDT
- In force
- 37 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Becker County, MN, Clay County, MN, Otter Tail County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 125 km from the middle of the area, began a volume at 23:11 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 |
|---|---|---|---|
| Jun 20, 6:30 PM CDT | Hail 0.75 | Lake Park, MN | |
| Jun 20, 6:35 PM CDT | Hail 1 | Pelican Rapids, MN | |
| Jun 20, 6:40 PM CDT | Hail 0.75 | Pelican Rapids, MN | |
| Jun 20, 6:45 PM CDT | Hail 0.88 | Wolverton, MN | |
| Jun 20, 6:45 PM CDT | Hail 1 | Dunvilla, 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
Aberdeen, SD (KABR), launched 12:00Z, 11.1 hours before the alert went out and 267 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1982 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KFGF 202308 RRA SVRFAR MNC005-027-111-202345- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 608 PM CDT WED JUN 20 2001 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHWESTERN BECKER COUNTY IN NORTHWEST MINNESOTA... SOUTHEASTERN CLAY COUNTY IN NORTHWEST MINNESOTA... NORTHWESTERN OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA... * UNTIL 645 PM CDT * AT 606 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 2 MILES NORTHEAST OF ROLLAG...OR ABOUT 17 MILES WEST OF DETROIT LAKES...MOVEMENT WAS TO THE EAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... LAKE PARK AT 610 PM CDT... CORMORANT AT 625 PM CDT... DUNVILLA AT 630 PM CDT... SHOREHAM AT 640 PM CDT... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4677 9640 4657 9620 4661 9581 4694 9601 $$ DTR 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 Jun 20, 2:05 PM CDT, 4 hours 3 minutes earlier.
Area forecast discussion, Jun 20, 2:05 PM CDT, 4 hours 3 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 205 PM CDT WED JUN 20 2001 FORECAST CHALLENGE IS EVENING CONVECTIVE THREAT THEN SHIFTS TO LONG AWAITED WARMUP. WATER VAPOR LOOP SHOWING ONE WAVE MOVING INTO WESTERN NORTH DAKOTA AND A SECOND WAVE DROPPING SOUTH OVER WESTERN ONTARIO. BOTH ETA AND AVN MATCHED THESE FEATURES WELL WITH LITTLE DIFFERENCE SEEN EITHER AT THE SFC OR H5...SO BASICALLY FOLLOWED A COMPROMISE FOR THE FORECAST DETAILS. CONVECTION CURRENTLY FIRING AHEAD OF WAVE DROPPING INTO WESTERN ND ALONG WEAK SFC MOISTURE CONVERGENCE AREA FROM KMOT TO KGFK TO KBIS. LOWEST LI'S ON MSAS STILL SHIFTING INTO SOUTHEAST ND ALONG THIS MOISTURE CONVERGENCE LINE...SO STILL EXPECTING THUNDERSTORMS TO FIRE ACROSS THIS AREA AS WELL. PREVIOUSLY MENTIONED H5 SHORT WAVE DROPS THROUGH THE AREA ON THE NORTHWEST FLOW OVERNIGHT. H85-7 Q VECTOR CONVERGENCE AND H7 OMEGA WHICH PEAKS ACROSS SOUTHERN AREAS BETWEEN 18Z AND 00Z DIMINISHES QUICKLY AFTER 00Z. LI AND SHOWALTER INDICES ALSO PEAK DURING THE AFTERNOON AND QUICKLY TAPER OFF WITH LOSS OF DAYTIME HEATING. SO AS WAS THE CASE TUESDAY...CONVECTION SHOULD TAPER OFF BY SUNSET. H85-5 Q VECTOR DIVERGENCE AND SFC HIGH NOSING INTO WESTERN ND BY 12Z THU WILL BRING A DECREASE IN CLOUD COVER FROM NW TO SE. WILL KEEP CLOUD COVER IN LONGEST ACROSS WEST CENTRAL MN...WHICH WILL HELP TO KEEP TEMPS WARMEST ACROSS THESE AREAS. WITH WIND SPEEDS FALLING OFF AND CLEARING WORKING IN...MAY BE SOME PATCHY FOG. KTVF AND KCKN DIPPED TO A QUARTER MILE THIS MORNING...BUT WERE THE ONLY SITES THAT REPORTED FOG. AGAIN WOULD EXPECT ANY FOG TO BE MORE ISOLATED AND WILL NOT MENTION AT THIS TIME. BUILDING RIDGE ON THURSDAY WITH H5 COLD POOL FINALLY SHIFTING TO THE EAST. EXPECT PLENTY OF SUNSHINE FOR MOST AREAS...WITH SOME AFTERNOON CU DEVELOPMENT AGAIN OVER FAR EASTERN ZONES. MODEL SOUNDINGS GIVE THIS AREA A CONVECTIVE TEMP IN THE MIDDLE 60S...WHICH WILL EASILY BE REACHED. THICKNESSES AND H85 TEMPS BEGIN TO RISE SLIGHTLY DURING THE DAY THU...SO RISING TREND ON TEMPS STILL LOOKS GOOD. BETTER H85 WAA TAKES PLACE THU NIGHT INTO FRI. SFC HIGH SHIFTS INTO THE CENTRAL PLAINS ON FRI...SETTING UP WEAK RETURN FLOW AND ANOTHER WARM DAY. MODEL TRENDS CONTINUE TO BE VERY CONSISTENT IN THE EXTENDED PERIODS. THE FINER DETAILS ARE ALSO BECOMING MORE CLEAR WITH POSSIBILITY OF SEVERE WEATHER SUNDAY NIGHT AND MONDAY. UNTIL SATURDAY...REGION WILL BE IN FINE SHAPE UNDER 50H RIDGING WITH A CONTINUED BREAK IN THE PRECIPITATION AND WARMER TEMPERATURES. FIRST RIDGE RIDER WILL MOVE INTO SOUTHERN CANADA ON SATURDAY. THIS WILL INITIATE CYCLOGENESIS IN MONTANA DYNAMICS IN PLACE FOR A SLIGHT CHANCE OF A THUNDERSTORM IN THE DVL AREA SATURDAY. WITH THE 850MB FLOW...WEAKENING COMPLEX WILL ROLL INTO THE RED RIVER VALLEY SATURDAY NIGHT AND SUNDAY MORNING. DURING THE AFTERNOON ON SUNDAY IS WHEN THINGS WILL REALLY GET GOING OUT WEST. A PEEK AT THE 850MB TEMPS SHOW DECENT CAP WILL BUILD INTO THE SOUTHERN RED RIVER VALLEY LEAVING THE AREA PRECIPITATION FREE DURING THE DAY...WITH THE ONLY CHANCE OF PRECIPITATION ON THE FRINGE OF THE CAP ACROSS THE DVL AREA AND EXTREME NORTHERN RED RIVER VALLEY. THE MAIN SHOW WILL HOLD OFF UNTIL LATE SUNDAY NIGHT INTO MONDAY...WHEN CAP FINALLY WEAKENS AND 60KT MID-LEVEL FLOW WORKS INTO THE AREA. STIL2L COULD BE SOME SHOWERS LEFT OVER ON TUESDAY...BUT WILL BE OPTIMISTIC FOR NOW. .FGF...NONE. GODON/BRAZZELL
In the hours before
Local storm report, Jun 20, 5:57 PM CDT, 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
557 PM CDT WED JUN 20 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1253 PM 3 N MINNEWAUKAN ND .88 INCH HAIL
06/20/01 BENSON
0104 PM 4 S MINNEWAUKAN ND TORNADO
06/20/01 BENSON BRIEF TOUCHDOWN
0105 PM 5 W DEVILS LAKE ND TORNADO
06/20/01 RAMSEY BRIEF TOUCHDOWN
0106 PM 5 SE MINNEWAUKAN ND TORNADO
06/20/01 BENSON BRIEF TOUCHDOWNS ON AND
NEAR DEVILS LAKE
0125 PM 4 SW DEVILS LAKE ND 1.75 INCH HAIL
06/20/01 RAMSEY
0125 PM OBERON ND TORNADO
06/20/01 BENSON BRIEF TOUCHDOWN
0138 PM 10 S MICHIGAN ND .75 INCH HAIL
06/20/01 NELSON
0138 PM 10 S MICHIGAN ND WIND DAMAGE
06/20/01 NELSON 70 MPH WINDS
0252 PM 3 SE NORTHWOOD ND 1 INCH HAIL
06/20/01 GRAND FORKS
0305 PM 6 NW JESSIE ND .88 INCH HAIL
06/20/01 GRIGGS
0309 PM 10 W REYNOLDS ND .75 INCH HAIL
06/20/01 GRAND FORKS
0325 PM SHARON ND .75 INCH HAIL
06/20/01 STEELE
0341 PM 11 E MAYVILLE ND TORNADO
06/20/01 TRAILL TOUCHDOWN NEAR INTERSTATE
29
0343 PM CUMMINGS ND .88 INCH HAIL
06/20/01 TRAILL
0345 PM 2 E CUMMINGS ND 1 INCH HAIL
06/20/01 TRAILL
0410 PM 2 W LITCHVILLE ND .75 INCH HAIL
06/20/01 BARNES
0415 PM 4 S SHELLY MN .75 INCH HAIL
06/20/01 NORMAN
0418 PM 2 N ECKELSON ND .75 INCH HAIL
06/20/01 BARNES
0422 PM 3 W MANTADOR ND .75 INCH HAIL
06/20/01 RICHLAND
0440 PM 4 N LISBON ND .75 INCH HAIL
06/20/01 RANSOM
0444 PM 2 W ADA MN .75 INCH HAIL
06/20/01 NORMAN
0445 PM ADA MN .75 INCH HAIL
06/20/01 NORMAN
0445 PM VALLEY CITY ND 1 INCH HAIL
06/20/01 BARNES HAIL 2-3 INCHES DEEP
0500 PM 6 SE VALLEY CITY ND .75 INCH HAIL
06/20/01 BARNES
NNNNThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 3:45 PM CDT | Tornado Warning | FGF | Norman | 30 min |
| Jun 20, 4:15 PM CDT | Severe Thunderstorm Warning | FGF | Norman | 45 min |
| Jun 20, 6:44 PM CDT | Severe Thunderstorm Warning | FGF | Wilkin | 31 min |
| Jun 20, 6:47 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 43 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.