Alert archive / North Dakota / Tornado Warnings in 2001

Tornado Warning 43, NWS Grand Forks, ND

July 18, 2001Pembina County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jul 18, 2001, 6:36 PM CDT for Pembina County, North Dakota. It was in force for 24 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 18, 2001, 6:36 PM CDT (23:36 UTC)
Expired: Jul 18, 2001, 7:00 PM CDT
In force: 24 min
Issued by: NWS Grand Forks, ND
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Pembina County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 131 km from the middle of the area, began a volume at 23:38 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 18, 7:00 PM CDT	Hail 0.75	Hensel, 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.

Issued	Product	Office	Lasted
Jul 18, 4:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.6 hours before the alert went out and 311 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: 1501 J/kg
Mixed-layer CIN: -233 J/kg
Mixed-layer LCL: 728 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KFGF 182336
TORFAR

NDC067-190000-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
636 PM CDT WED JUL 18 2001

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...

  SOUTHERN PEMBINA COUNTY IN NORTHEAST NORTH DAKOTA.

* UNTIL 700 PM CDT.

* AT 633 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 5 MILES WEST OF CRYSTAL...OR ABOUT 22 MILES NORTHWEST OF
  GRAFTON...MOVEMENT WAS TO THE NORTHEAST AT 20 MPH.

* THE TORNADO WILL BE NEAR...

  CRYSTAL AT 640 PM CDT...
  HENSEL AT 645 PM CDT AND
  GLASSTON AT 700 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 WEDNESDAY EVENING
FOR NORTHWESTERN MINNESOTA AND EASTERN NORTH DAKOTA. A TORNADO WATCH
ALSO REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING FOR
NORTHWESTERN MINNESOTA.

LAT...LON 4868 9793 4856 9780 4865 9728 4884 9741


$$
08
DJK

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 7:03 PM CDT	Tornado Warning	FGF	Ransom	42 min
Jul 17, 7:27 PM CDT	Tornado Warning	FGF	Richland	48 min
Jul 17, 7:41 PM CDT	Severe Thunderstorm Warning	FGF	Ramsey, Walsh	49 min
Jul 17, 7:47 PM CDT	Severe Thunderstorm Warning	FGF	Ransom	43 min
Jul 17, 8:10 PM CDT	Tornado Warning	FGF	Richland	35 min
Jul 17, 8:13 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass	47 min
Jul 17, 8:37 PM CDT	Severe Thunderstorm Warning	FGF	Ransom	53 min
Jul 17, 8:42 PM CDT	Severe Thunderstorm Warning	FGF	Richland	48 min
Jul 17, 8:58 PM CDT	Severe Thunderstorm Warning	FGF	Cass	32 min
Jul 17, 9:29 PM CDT	Severe Thunderstorm Warning	FGF	Ransom, Richland	31 min
Jul 17, 9:38 PM CDT	Severe Thunderstorm Warning	FGF	Ransom	37 min
Jul 17, 9:57 PM CDT	Severe Thunderstorm Warning	FGF	Richland	48 min
Jul 17, 10:05 PM CDT	Severe Thunderstorm Warning	FGF	Sargent	40 min
Jul 17, 10:11 PM CDT	Severe Thunderstorm Warning	FGF	Ransom	34 min
Jul 17, 10:40 PM CDT	Severe Thunderstorm Warning	FGF	Richland	35 min
Jul 17, 11:50 PM CDT	Severe Thunderstorm Warning	FGF	Barnes	40 min
Jul 18, 12:30 AM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass	45 min
Jul 18, 12:56 AM CDT	Severe Thunderstorm Warning	FGF	Griggs	49 min
Jul 18, 1:12 AM CDT	Severe Thunderstorm Warning	FGF	Cass	63 min
Jul 18, 2:07 AM CDT	Severe Thunderstorm Warning	FGF	Steele	38 min
Jul 18, 2:13 AM CDT	Severe Thunderstorm Warning	FGF	Cass	62 min
Jul 18, 3:41 PM CDT	Severe Thunderstorm Warning	FGF	Pembina	49 min
Jul 18, 4:22 PM CDT	Tornado Warning	FGF	Pembina	38 min
Jul 18, 5:43 PM CDT	Severe Thunderstorm Warning	FGF	Nelson	47 min
Jul 18, 5:57 PM CDT	Severe Thunderstorm Warning	FGF	Pembina	48 min
Jul 18, 6:00 PM CDT	Tornado Warning	FGF	Nelson	30 min
Jul 18, 6:04 PM CDT	Tornado Warning	FGF	Griggs	26 min
Jul 18, 6:26 PM CDT	Tornado Warning	FGF	Griggs, Nelson, Steele	49 min
Jul 18, 6:32 PM CDT	Tornado Warning	FGF	Walsh	43 min

Nearby

Tornado Warnings in North Dakota, 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.