Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 63, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 18, 2001, 3:22 AM CDT for Otter Tail County, Minnesota. It was in force for 28 min. 2 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 18, 2001, 3:22 AM CDT (08:22 UTC)
- Expired
- Jun 18, 2001, 3:50 AM CDT
- In force
- 28 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Otter Tail County, MN
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 18, 3:40 AM CDT | Hail 0.75 | Parkers Prairie, MN | |
| Jun 18, 3:45 AM CDT | Hail 0.75 | Wrightstown, 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
Minneapolis, MN (KMPX), launched 00:00Z, 8.4 hours before the alert went out and 203 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
- 38 J/kg
- Mixed-layer CIN
- -195 J/kg
- Mixed-layer LCL
- 1536 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 289 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 180822 SVRFAR MNC111-180850- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 322 AM CDT MON JUN 18 2001 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA... * UNTIL 350 AM CDT * AT 320 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES SOUTH OF VINING...OR ABOUT 25 MILES EAST OF FERGUS FALLS...MOVEMENT WAS TO THE EAST AT 40 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... URBANK AT 325 AM CDT... ALMORA AT 330 AM CDT... PARKERS PRAIRIE AT 335 AM CDT... REMEMBEaR SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4633 9560 4616 9569 4597 9500 4618 9490 $$ 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 18, 3:03 AM CDT, 19 minutes earlier.
Area forecast discussion, Jun 18, 3:03 AM CDT, 19 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 303 AM CDT MON JUN 18 2001 ...MAIN CONCERN PCPN POTENTIAL TODAY AND TONIGHT... .SHORT TERM...WITH ONGOING SVR WEATHER WL BE BRIEF. STRONG CONNECTIVE ACTIVITY CONT TO MOVE QUICKLY E ACROSS SRN ZONES IN AREA OF DECENT 850-700 MB WARM AIR ADVECTION AS DECENT 3H JET NOSES INTO THE NRN PLAINS. FLY IN OINTMENT IS MCS DEVELOPING IN SD...WHICH SHOULD ROB MOISTURE AND INSTABILITY FROM THE AREA FOR A TIME. LATEST RADAR DATA SUPPORTS THIS AS MOST ACTIVITY W OF THE RED RIVER VALLEY WEAKENING ATTM. BUT WITH GOOD SHRT WV MOVING IN LATER TODAY WITH ASSOCIATED COLD FRONT...CONVECTIVE ACTIVITY TO REFIRE. PREFERRED AVN SFC LOW TRACK...WHICH PUSHES LOW INTO NRN MN BY 0Z. MAX 850 MB WARM AIR ADVECTION MOVES N ALONG THE VALLEY THIS MORNING WITH INSTABILITY PARAMETERS STAYING UP OVER THE S. WL KEEP MENTION OF TSRA OVER THE S FOR TODAY...WITH ONLY SHRA N. WL ALSO MENTION A POSSIBILITY OF SVR ACROSS SE ZONES AS WARM FRONT TO LIFT INTO THIS AREA LATER THIS AM AS LOW SHIFTS TO A MORE NNE TRACK. MOS NUMBERS REASONABLE AND WL STAY CLOSE. .LONG TERM...PCPN TO END RATHER QUICKLY FROM W TO E DURING THE EVE HOURS WITH HIGH PRES BUILDING IN BEHIND THE 5H SHRT WV. WITH DRIER AIR MOVING IN ALONG WITH CLEARING SKIES WL KEEP COOL FORECAST GOING. TEMPS RECOVER SOMEWHAT OVER THE S BUT STAY COOL ACROSS THE N AS SECOND SURGE OF COOLER AIR MOVES IN AS 5H TROF SWINGS AROUND MAIN LOW INTO THE REGION. .EXTENDED...WL LEAVE ALONE FOR NOW...WL TAKE A LOOK LATER IF TIME PERMITS. .FGF...NONE. RJT
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 1:37 AM CDT | Severe Thunderstorm Warning | FGF | Wilkin | 38 min |
| Jun 18, 1:49 AM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 41 min |
| Jun 18, 2:29 AM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 31 min |
| Jun 18, 3:01 AM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 19 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.