Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 101, NWS Grand Forks, ND

July 17, 2001Beltrami County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 17, 2001, 3:54 PM CDT for Beltrami County, Minnesota. It was in force for 51 min. 3 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: Jul 17, 2001, 3:54 PM CDT (20:54 UTC)
Expired: Jul 17, 2001, 4:45 PM CDT
In force: 51 min
Issued by: NWS Grand Forks, ND
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Beltrami County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 195 km from the middle of the area, began a volume at 20:55 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
Jul 17, 4:00 PM CDT	Hail 1	Bemidji, MN
Jul 17, 4:25 PM CDT	Hail 1.5	Bemidji, MN
Jul 17, 4:40 PM CDT	Hail 0.75	Skime, 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

International Fa, MN (KINL), launched 12:00Z, 8.9 hours before the alert went out and 140 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: 438 J/kg
Mixed-layer CIN: -118 J/kg
Mixed-layer LCL: 617 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 126 m²/s²
0-3 km storm-relative helicity: 183 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KFGF 172055
SVRFAR

MNC007-172145-

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

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  EAST CENTRAL BELTRAMI COUNTY IN NORTH CENTRAL MINNESOTA.

* UNTIL 445 PM CDT.

* AT 350 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 4 MILES NORTHWEST OF TURTLE RIVER...OR ABOUT 9
  MILES NORTH OF BEMIDJI...MOVEMENT WAS TO THE EAST AT 15 MPH.

* QUARTER SIZE HAIL HAS BEEN REPORTED WITH THIS STORM

* THE SEVERE THUNDERSTORM WILL BE NEAR...

  TURTLE RIVER AT 400 PM CDT...
  TENSTRIKE AT 410 PM CDT...
  HINES AT 415 PM CDT AND
  KELLIHER AT 425 PM CDT.

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM CDT
TUESDAY EVENING FOR EASTERN NORTH DAKOTA.

LAT...LON 4768 9501 4755 9482 4786 9430 4803 9456


$$
BRAZZELL

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 9:45 PM CDT	Severe Thunderstorm Warning	FGF	Kittson	45 min
Jul 16, 10:15 PM CDT	Flash Flood Warning	FGF	Kittson	4 hr
Jul 17, 2:28 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami	47 min
Jul 17, 4:14 PM CDT	Severe Thunderstorm Warning	FGF	Roseau	61 min
Jul 17, 4:25 PM CDT	Tornado Warning	FGF	Beltrami	35 min
Jul 17, 4:59 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami	46 min
Jul 17, 5:04 PM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods	56 min
Jul 17, 5:24 PM CDT	Tornado Warning	FGF	Beltrami	36 min
Jul 17, 5:59 PM CDT	Tornado Warning	FGF	Beltrami	31 min
Jul 17, 6:01 PM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods	44 min
Jul 17, 6:05 PM CDT	Severe Thunderstorm Warning	FGF	Marshall	55 min
Jul 17, 6:25 PM CDT	Tornado Warning	FGF	Beltrami	35 min
Jul 17, 6:37 PM CDT	Flash Flood Warning	FGF	Beltrami, Lake of the Woods	5 hr
Jul 17, 6:37 PM CDT	Severe Thunderstorm Warning	FGF	Becker	53 min
Jul 17, 6:40 PM CDT	Tornado Warning	FGF	Wadena	35 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.