Alert archive / North Dakota / Tornado Warnings in 2001

Tornado Warning 22, NWS Grand Forks, ND

July 17, 2001Griggs County, Steele County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jul 17, 2001, 4:30 PM CDT for Griggs County, Steele County, North Dakota. It was in force for 45 min. 5 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 17, 2001, 4:30 PM CDT (21:30 UTC)
Expired
Jul 17, 2001, 5:15 PM CDT
In force
45 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

Counties Griggs County, ND, Steele County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 50 km from the middle of the area, began a volume at 21:30 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

TimeReportWhereRemark
Jul 17, 4:30 PM CDTHail 1.75Finley, NDThe hail battered a farmhouse, denting the siding and putting holes in the gutters. Several windows were broken and the shingles were damaged.
Jul 17, 4:35 PM CDTHail 1.75Hope, ND
Jul 17, 5:00 PM CDTHail 4.5Finley, ND
Jul 17, 5:00 PM CDTHail 2Finley, NDThe hail damaged a pickup. County extension agents estimated that 10,000 acres were destroyed along a strip from highway 200 along the Steele/Griggs line to near Blabon.
Jul 17, 5:10 PM CDTHail 0.75Cooperstown, ND

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.

IssuedProductOfficeLasted
Jul 17, 2:00 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 9.5 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-pSkew-T log-p diagram, Bismarck Municip, ND at 12:00Z on 2001-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1827 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 12:00Z on 2001-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 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
1827 J/kg
Mixed-layer CIN
-176 J/kg
Mixed-layer LCL
1544 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
183 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KFGF 172132
TORFAR

NDC039-091-172215-

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

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...

  EAST CENTRAL GRIGGS COUNTY IN SOUTHEAST NORTH DAKOTA AND
  WESTERN STEELE COUNTY IN SOUTHEAST NORTH DAKOTA.

* UNTIL 515 PM CDT.

* AT 425 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 10 MILES WEST OF BLABON...OR ABOUT 32 MILES NORTH OF VALLEY
  CITY...MOVEMENT WAS TO THE NORTHEAST AT 15 MPH.

* THE TORNADO WILL BE NEAR...

  BLABON AT 450 PM CDT...
  FINLEY AT 455 PM CDT AND
  SHERBROOKE AT 500 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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM CDT
TUESDAY EVENING FOR EASTERN NORTH DAKOTA.

LAT...LONn 4744 9814 4728 9803 4737 9767 4756 9779


$$
DJK
08

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 9:18 PM CDTSevere Thunderstorm WarningFGFBenson, Eddy27 min
Jul 17, 3:40 PM CDTSevere Thunderstorm WarningFGFGriggs, Steele50 min
Jul 17, 4:04 PM CDTTornado WarningFGFGriggs, Steele26 min
Jul 17, 4:31 PM CDTFlash Flood WarningFGFGriggs, Steele4 hr
Jul 17, 4:52 PM CDTSevere Thunderstorm WarningFGFTraill53 min
Jul 17, 5:16 PM CDTTornado WarningFGFTraill44 min
Jul 17, 5:20 PM CDTSevere Thunderstorm WarningFGFGriggs, Steele40 min
Jul 17, 5:33 PM CDTSevere Thunderstorm WarningFGFCass42 min
Jul 17, 6:03 PM CDTSevere Thunderstorm WarningFGFTraill42 min
Jul 17, 6:07 PM CDTSevere Thunderstorm WarningFGFCass53 min
Jul 17, 6:11 PM CDTSevere Thunderstorm WarningFGFBarnes64 min
Jul 17, 6:19 PM CDTTornado WarningFGFCass26 min
Jul 17, 6:48 PM CDTTornado WarningFGFRichland42 min
Jul 17, 6:59 PM CDTTornado WarningFGFCass46 min

Nearby

Tornado Warnings in North Dakota, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.