Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 252, NWS Grand Forks, ND

July 31, 2001Beltrami County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 31, 2001, 8:43 PM CDT for Beltrami County, Minnesota. It was in force for 32 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 31, 2001, 8:43 PM CDT (01:43 UTC)
Expired: Jul 31, 2001, 9:15 PM CDT
In force: 32 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), 163 km from the middle of the area, began a volume at 01:43 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 31, 4:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 1.7 hours before the alert went out and 159 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: 1223 J/kg
Mixed-layer CIN: -187 J/kg
Mixed-layer LCL: 537 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 558 m²/s²
0-3 km storm-relative helicity: 694 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 26.2

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KFGF 010143
SVRFAR

MNC007-010215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
843 PM CDT TUE JUL 31 2001

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  NORTHWESTERN BELTRAMI COUNTY IN NORTH CENTRAL MINNESOTA.

* UNTIL 915 PM CDT.

* AT 838 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 13 MILES SOUTHWEST OF JELLE...OR ABOUT 30 MILES
  EAST OF THIEF RIVER FALLS...MOVEMENT WAS TO THE NORTHEAST AT 40
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...

  JELLE AT 855 PM AND
  THORHULT AT 900 PM.

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM WEDNESDAY
MORNING FOR NORTHWESTERN MINNESOTA.

LAT...LON 4822 9557 4797 9554 4816 9500 4835 9517

$$
C23
NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 7:30 PM CDT	Severe Thunderstorm Warning	FGF	Polk, Red Lake	30 min
Jul 31, 7:58 PM CDT	Severe Thunderstorm Warning	FGF	Polk	32 min
Jul 31, 8:08 PM CDT	Severe Thunderstorm Warning	FGF	Clearwater	52 min
Jul 31, 8:23 PM CDT	Severe Thunderstorm Warning	FGF	Pennington	37 min
Jul 31, 9:00 PM CDT	Severe Thunderstorm Warning	FGF	Marshall, Pennington	30 min
Jul 31, 10:05 PM CDT	Flash Flood Warning	FGF	Clearwater	5 hr
Jul 31, 11:10 PM CDT	Flash Flood Warning	FGF	Beltrami, Lake of the Woods	4 hr

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.