Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 129, NWS Grand Forks, ND

July 17, 2001Otter Tail County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 17, 2001, 9:59 PM CDT for Otter Tail County, Minnesota. It was in force for 31 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: Jul 17, 2001, 9:59 PM CDT (02:59 UTC)
Expired: Jul 17, 2001, 10:30 PM CDT
In force: 31 min
Issued by: NWS Grand Forks, ND
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Otter Tail County, MN

The radar

The Minneapolis radar (KMPX), 206 km from the middle of the area, began a volume at 02:58 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 17, 7:00 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 3.0 hours before the alert went out and 204 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 4439 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1233 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 4.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KFGF 180300
SVRFAR

MNC111-180330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
959 PM CDT TUE JUL 17 2001

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  SOUTHEASTERN OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA.

* UNTIL 1030 PM CDT.

* AT 954 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES NORTH OF PARKERS PRAIRIE...OR ABOUT 36
  MILES EAST OF FERGUS FALLS...MOVEMENT WAS TO THE SOUTHEAST AT 20
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...

  PARKERS PRAIRIE AT 1005 PM CDT.

REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT WEDNESDAY
MORNING FOR NORTHWESTERN MINNESOTA. A TORNADO WATCH ALSO REMAINS IN
EFFECT UNTIL MIDNIGHT CDT WEDNESDAY MORNING FOR SOUTHEAST NORTH
DAKOTA.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 AM CDT
WEDNESDAY MORNING FOR WEST CENTRAL MINNESOTA.

LAT...LON 4632 9524 4614 9548 4612 9517 4644 9519


$$


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 17, 8:00 PM CDT, 1 hour 59 minutes earlier.

Area forecast discussion, Jul 17, 8:00 PM CDT, 1 hour 59 minutes before

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
800 PM CDT TUE JUL 17 2001

...DUE TO ONGOING SEVERE WEATHER...THE EVENING AFfD WILL BE DELAYED...

THE EVENING FORECAST DISCUSSION AND ZONE UPDATES WILL OCCUR ONCE THE
SEVERE WEATHER SUBSIDES...

RJT

In the hours before

Local storm report, Jul 17, 5:28 PM CDT, 4 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
528 PM CDT TUE JUL 17 2001

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0350 PM    7 W FINLEY                ND   2 INCH HAIL
07/17/01   GRIGGS

0400 PM    7 SW FINLEY               ND   2 INCH HAIL
07/17/01   STEELE                         GROUND WAS WHITE

0404 PM    4 E COOPERSTOWN           ND   1 INCH HAIL
07/17/01   GRIGGS

0405 PM    5 W FINLEY                ND   1.75 INCH HAIL
07/17/01   STEELE

0425 PM    3 N BEMIDJI               MN   1.5 INCH HAIL
07/17/01   BELTRAMI

0428 PM    3 S FINLEY                ND   1 INCH HAIL
07/17/01   STEELE

0435 PM    5 N HOPE                  ND   1.75 INCH HAIL
07/17/01   STEELE

0435 PM    3 S SALOL                 MN   1 INCH HAIL
07/17/01   ROSEAU

0440 PM    10 N GRYGLA               MN   .75 INCH HAIL
07/17/01   MARSHALL

0453 PM    4 W KELLIHER              MN   .75 INCH HAIL
07/17/01   BELTRAMI

NNNN

Special weather statement, Jul 17, 7:29 PM CDT, 2 hours 30 minutes before

NDZ014-015-024-026>030-180100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
729 PM CDT TUE JUL 17 2001

...SEVERE THUNDERSTORM WATCH HAS EXPIRED...

AT 700 PM CDT...THE ATMOSPHERE HAS STABILIZED OVER BENSON...
RAMSEY...NELSON...GRAND FORKS...EDDY...GRIGGS...STEELE AND TRAILL
COUNTIES OF EASTERN NORTH DAKOTA. WHILE SCATTERED THUNDERSTORMS ARE
POSSIBLE...NO SEVERE WEATHER IS EXPECTED.

A TORNADO WATCH REMAINS IN EFFECT FOR SOUTHEAST NORTH DAKOTA AND
MUCH OF NORTHWEST MINNESOTA UNTIL MIDNIGHT CDT.

RJT

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 17, 7:02 PM CDT	Tornado Warning	FGF	Beltrami	28 min
Jul 17, 7:14 PM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods	61 min
Jul 17, 7:16 PM CDT	Tornado Warning	FGF	Wadena	29 min
Jul 17, 7:32 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami	43 min
Jul 17, 8:10 PM CDT	Tornado Warning	FGF	Wilkin	35 min
Jul 17, 8:15 PM CDT	Severe Thunderstorm Warning	FGF	Hubbard	60 min
Jul 17, 8:18 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Lake of the Woods	57 min
Jul 17, 8:22 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Otter Tail	53 min
Jul 17, 8:42 PM CDT	Severe Thunderstorm Warning	FGF	Wilkin	48 min
Jul 17, 9:11 PM CDT	Severe Thunderstorm Warning	FGF	Otter Tail	49 min
Jul 17, 11:00 PM CDT	Severe Thunderstorm Warning	FGF	Wilkin	30 min
Jul 18, 4:22 PM CDT	Tornado Warning	FGF	Kittson	38 min
Jul 18, 4:57 PM CDT	Tornado Warning	FGF	Kittson	33 min
Jul 18, 5:29 PM CDT	Tornado Warning	FGF	Kittson, Roseau	46 min
Jul 18, 6:14 PM CDT	Severe Thunderstorm Warning	FGF	Roseau	61 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2001 Every 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.