Alert archive / North Dakota / Tornado Warnings in 1999

Tornado Warning 2, NWS Grand Forks, ND

June 6, 1999Benson County, Eddy County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jun 6, 1999, 1:43 PM CDT for Benson County, Eddy County, North Dakota. It was in force for 32 min. 4 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
Jun 6, 1999, 1:43 PM CDT (18:43 UTC)
Expired
Jun 6, 1999, 2:15 PM CDT
In force
32 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

Counties Benson County, ND, Eddy County, ND

What was reported inside it

TimeReportWhereRemark
Jun 6, 1:45 PM CDTTornado F0Hamar, NDTwin tornadoes were reported.
Jun 6, 1:45 PM CDTHail 1Warwick, ND
Jun 6, 2:00 PM CDTTornado F0Warwick, NDA tornado formed near East Devils Lake, went out into the lake, and then came back onto land.
Jun 6, 2:05 PM CDTTornado F0Warwick, NDTwin tornadoes were reported.

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
Jun 6, 12:30 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 6.7 hours before the alert went out and 172 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 1999-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 338 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 1999-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 107 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
338 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
874 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
107 m²/s²
0-3 km storm-relative helicity
138 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFAR 061843 RRA
TORFAR
NDC005-027-061915-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
143 PM CDT SUN JUN 6 1999

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  EXTREME EASTERN BENSON COUNTY IN NORTHEASTERN NORTH DAKOTA
  EAST CENTRAL EDDY COUNTY IN NORTHEASTERN NORTH DAKOTA

* UNTIL 215 PM CDT

* AT 142 PM CDT... EDDY COUNTY SPOTTERS REPORTED A
  TORNADO 17 MILES SOUTH OF DEVILS LAKE OR 4 MILES SOUTHEAST OF
  TOKIO... MOVING NORTHWEST AT 15 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  TOKIO AT 157 PM CDT
  SAINT MICHAEL AT 214 PM CDT

THIS IS A DANGEROUS STORM. IF YOU ARE IN THE PATH OF A TORNADO
ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING.

DJK


&

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 6, 1:25 PM CDTSevere Thunderstorm WarningFGFEddy35 min
Jun 6, 1:33 PM CDTTornado WarningFGFEddy32 min
Jun 6, 1:51 PM CDTTornado WarningFGFRamsey34 min
Jun 6, 1:57 PM CDTTornado WarningFGFNelson, Ramsey33 min
Jun 6, 2:26 PM CDTTornado WarningFGFRamsey34 min
Jun 6, 2:29 PM CDTSevere Thunderstorm WarningFGFBenson36 min
Jun 6, 2:35 PM CDTTornado WarningFGFWalsh35 min
Jun 6, 3:04 PM CDTTornado WarningFGFCavalier36 min
Jun 6, 3:09 PM CDTTornado WarningFGFWalsh36 min
Jun 6, 3:21 PM CDTTornado WarningFGFPembina34 min
Jun 6, 3:38 PM CDTTornado WarningFGFCavalier32 min
Jun 6, 4:04 PM CDTSevere Thunderstorm WarningFGFPembina36 min
Jun 6, 4:10 PM CDTSevere Thunderstorm WarningFGFCavalier35 min

Nearby

Tornado Warnings in North Dakota, 1999Every tornado warning in 1999Tornadoes in 1999

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.