Alert archive / Minnesota / Tornado Warnings in 2001

Tornado Warning 33, NWS Grand Forks, ND

July 17, 2001Wadena County, Minnesota

NWS Grand Forks, ND issued this tornado warning at Jul 17, 2001, 7:16 PM CDT for Wadena County, Minnesota. It was in force for 29 min. 1 report 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: Jul 17, 2001, 7:16 PM CDT (00:16 UTC)
Expired: Jul 17, 2001, 7:45 PM CDT
In force: 29 min
Issued by: NWS Grand Forks, ND
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Wadena County, MN

The radar

The Duluth radar (KDLH), 186 km from the middle of the area, began a volume at 00:18 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
Jul 17, 7:31 PM CDT	Hail 0.75	Tenstrike, 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 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, 0.3 hours before the alert went out and 219 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.

137 
WFUS53 KFGF 180016
TORFAR
MNC159-180045-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
716 PM CDT TUE JUL 17 2001

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...

  NORTHEASTERN WADENA COUNTY IN CENTRAL MINNESOTA.

* UNTIL 745 PM CDT.

* AT 711 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 3 MILES NORTHEAST OF NIMROD...OR ABOUT 49 MILES EAST OF
  DETROIT LAKES...MOVEMENT WAS TO THE EAST AT 30 MPH.

THIS IS A DANGEROUS STORM. IF YOU ARE IN THE PATH OF THIS TORNADO
ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING.

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

LAT...LON 4675 9491 4657 9491 4654 9425 4677 9425


$$
BRAZZELL

NNNN

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, 7:32 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, 9:59 PM CDT	Severe Thunderstorm Warning	FGF	Otter Tail	31 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

Tornado Warnings in Minnesota, 2001 Every tornado warning in 2001 Tornadoes 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.