Alert archive / Minnesota / Tornado Warnings in 2001

Tornado Warning 58, NWS Grand Forks, ND

July 31, 2001Beltrami County, Lake of the Woods County, Minnesota

NWS Grand Forks, ND issued this tornado warning at Jul 31, 2001, 5:39 PM CDT for Beltrami County, Lake of the Woods County, Minnesota. It was in force for 36 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, 5:39 PM CDT (22:39 UTC)
Expired
Jul 31, 2001, 6:15 PM CDT
In force
36 min
Issued by
NWS Grand Forks, ND
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Beltrami County, MN, Lake of the Woods County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 197 km from the middle of the area, began a volume at 22:41 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.

IssuedProductOfficeLasted
Jul 31, 4:00 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 10.7 hours before the alert went out and 134 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-pSkew-T log-p diagram, International Fa, MN at 12:00Z on 2001-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2851 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, International Fa, MN at 12:00Z on 2001-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2851 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
485 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
179 m²/s²
Significant tornado parameter
0.0
Supercell composite
7.8

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KFGF 312239
TORFAR

MNC007-077-312315-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
539 PM CDT TUE JUL 31 2001

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...

  EXTREME NORTHWESTERN BELTRAMI COUNTY IN NORTH CENTRAL MINNESOTA AND
  SOUTHERN LAKE OF THE WOODS COUNTY IN NORTH CENTRAL MINNESOTA.

* UNTIL 615 PM CDT.

* AT 535 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 2 MILES NORTHEAST OF GATES CORNER...OR ABOUT 33 MILES
  SOUTHEAST OF ROSEAU...MOVEMENT WAS TO THE EAST AT 35 MPH.

* THE TORNADO WILL BE NEAR...

  OAKS CORNER AT 600 PM CDT AND
  FAUNCE AT 605 PM CDT.

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 1000 PM CDT TUESDAY EVENING
FOR NORTHWESTERN MINNESOTA AND EASTERN NORTH DAKOTA.

LAT...LON 4853 9541 4838 9537 4843 9468 4865 9473


$$

7

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 4:11 AM CDTSevere Thunderstorm WarningFGFNorman, Polk34 min
Jul 31, 4:11 AM CDTSevere Thunderstorm WarningFGFPennington, Red Lake34 min
Jul 31, 4:11 AM CDTSevere Thunderstorm WarningFGFMarshall34 min
Jul 31, 4:47 AM CDTSevere Thunderstorm WarningFGFPennington, Polk, Red Lake28 min
Jul 31, 4:47 AM CDTSevere Thunderstorm WarningFGFBeltrami, Kittson, Marshall, Roseau28 min
Jul 31, 4:47 AM CDTSevere Thunderstorm WarningFGFClearwater28 min
Jul 31, 5:37 AM CDTSevere Thunderstorm WarningFGFBeltrami, Lake of the Woods38 min
Jul 31, 11:21 AM CDTSevere Thunderstorm WarningFGFPolk39 min
Jul 31, 11:57 AM CDTSevere Thunderstorm WarningFGFPennington, Polk, Red Lake48 min
Jul 31, 12:11 PM CDTSevere Thunderstorm WarningFGFMarshall64 min
Jul 31, 12:43 PM CDTSevere Thunderstorm WarningFGFPennington32 min
Jul 31, 12:46 PM CDTSevere Thunderstorm WarningFGFBeltrami, Lake of the Woods59 min
Jul 31, 1:20 PM CDTSevere Thunderstorm WarningFGFPennington, Polk25 min
Jul 31, 1:35 PM CDTSevere Thunderstorm WarningFGFMarshall40 min
Jul 31, 1:44 PM CDTSevere Thunderstorm WarningFGFLake of the Woods31 min
Jul 31, 2:15 PM CDTSevere Thunderstorm WarningFGFBeltrami, Marshall30 min
Jul 31, 4:35 PM CDTFlash Flood WarningFGFMarshall6 hr
Jul 31, 4:39 PM CDTFlash Flood WarningFGFPolk4 hr
Jul 31, 4:54 PM CDTSevere Thunderstorm WarningFGFPolk51 min
Jul 31, 5:16 PM CDTSevere Thunderstorm WarningFGFLake of the Woods, Roseau44 min
Jul 31, 6:05 PM CDTFlash Flood WarningFGFBeltrami, Lake of the Woods, Marshall, Roseau6 hr
Jul 31, 6:13 PM CDTSevere Thunderstorm WarningFGFClay32 min
Jul 31, 6:15 PM CDTTornado WarningFGFLake of the Woods30 min
Jul 31, 6:23 PM CDTFlash Flood WarningFGFPennington, Polk, Red Lake6 hr
Jul 31, 6:24 PM CDTSevere Thunderstorm WarningFGFNorman36 min
Jul 31, 6:54 PM CDTSevere Thunderstorm WarningFGFPolk, Red Lake36 min
Jul 31, 6:58 PM CDTSevere Thunderstorm WarningFGFNorman32 min

Nearby

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