Alert archive / North Dakota / Tornado Warnings in 2001

Tornado Warning 56, NWS Grand Forks, ND

July 19, 2001Traill County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jul 19, 2001, 12:27 AM CDT for Traill County, North Dakota. It was in force for 33 min. 2 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 19, 2001, 12:27 AM CDT (05:27 UTC)
Expired
Jul 19, 2001, 1:00 AM CDT
In force
33 min
Issued by
NWS Grand Forks, ND
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Traill County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 22 km from the middle of the area, began a volume at 05:27 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 19, 12:30 AM CDTHail 0.75Buxton, ND
Jul 19, 12:30 AM CDTThunderstorm WindBuxton, NDNumerous large trees were blown down.

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

Bismarck Municip, ND (KBIS), launched 00:00Z, 5.5 hours before the alert went out and 291 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 00:00Z on 2001-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2623 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 00:00Z on 2001-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 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
2623 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
1396 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
182 m²/s²
Significant tornado parameter
0.3
Supercell composite
4.4

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KFGF 190528
TORFAR

NDC097-190600-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
1227 AM CDT THU JUL 19 2001

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...

  NORTHEASTERN TRAILL COUNTY IN SOUTHEAST NORTH DAKOTA.

* UNTIL 100 AM CDT.

* AT 1222 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO OVER BUXTON...OR ABOUT 22 MILES SOUTH OF GRAND FORKS...
  MOVEMENT WAS TO THE SOUTHEAST AT 20 MPH.

* THIS IS AN UPGRADE TO THE SEVERE THUNDERSTORM WARNING ISSUED EARLIER

* THE TORNADO WILL BE NEAR...

  CUMMINGS AT 1230 AM 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 300 AM CDT
THURSDAY MORNING FOR NORTHWESTERN MINNESOTA. A SEVERE THUNDERSTORM
WATCH ALSO REMAINS IN EFFECT UNTIL 300 AM CDT THURSDAY MORNING FOR
SOUTHEAST NORTH DAKOTA.

LAT...LON 4767 9709 4755 9724 4743 9694 4759 9687


$$
BRAZZELL

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 7:00 PM CDTTornado WarningFGFPembina45 min
Jul 18, 7:08 PM CDTFlash Flood WarningFGFPembina3 hr
Jul 18, 7:09 PM CDTSevere Thunderstorm WarningFGFGriggs51 min
Jul 18, 7:09 PM CDTTornado WarningFGFNelson51 min
Jul 18, 7:13 PM CDTTornado WarningFGFWalsh47 min
Jul 18, 7:15 PM CDTTornado WarningFGFGriggs, Steele45 min
Jul 18, 7:15 PM CDTTornado WarningFGFGrand Forks45 min
Jul 18, 7:17 PM CDTFlash Flood WarningFGFGrand Forks, Nelson3 hr
Jul 18, 7:42 PM CDTSevere Thunderstorm WarningFGFPembina48 min
Jul 18, 7:55 PM CDTSevere Thunderstorm WarningFGFWalsh50 min
Jul 18, 8:00 PM CDTTornado WarningFGFGriggs, Steele45 min
Jul 18, 8:46 PM CDTSevere Thunderstorm WarningFGFBarnes59 min
Jul 18, 10:47 PM CDTSevere Thunderstorm WarningFGFGrand Forks43 min
Jul 18, 11:28 PM CDTSevere Thunderstorm WarningFGFGrand Forks47 min
Jul 18, 11:47 PM CDTTornado WarningFGFGrand Forks28 min
Jul 19, 12:04 AM CDTSevere Thunderstorm WarningFGFTraill41 min
Jul 19, 12:14 AM CDTTornado WarningFGFGrand Forks31 min
Jul 19, 12:27 AM CDTFlash Flood WarningFGFGrand Forks, Traill2 hr
Jul 19, 1:59 AM CDTSevere Thunderstorm WarningFGFWalsh46 min
Jul 19, 5:07 AM CDTSevere Thunderstorm WarningFGFRansom23 min
Jul 19, 5:16 AM CDTSevere Thunderstorm WarningFGFRichland44 min
Jul 19, 6:02 AM CDTSevere Thunderstorm WarningFGFCass28 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.