Alert archive / North Dakota / Tornado Warnings in 1990

Tornado Warning 1, NWS Bismarck, ND

June 18, 1990McKenzie County, North Dakota

NWS Bismarck, ND issued this tornado warning at Jun 18, 1990, 7:02 PM CDT for McKenzie County, North Dakota. It was in force for 28 min.

The area

The counties it named.

The facts

Issued: Jun 18, 1990, 7:02 PM CDT (00:02 UTC)
Expired: Jun 18, 1990, 7:30 PM CDT
In force: 28 min
Issued by: NWS Bismarck, ND
Area: Whole counties

County McKenzie County, ND

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 0.0 hours before the alert went out and 230 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: 395 J/kg
Mixed-layer CIN: -134 J/kg
Mixed-layer LCL: 2340 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 257 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KISN 190003
TORISN
NDC053-190030-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WILLISTON ND
702 PM CDT MON JUN 18 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 730 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE WEST CENTRAL PART OF NORTH DAKOTA
      NORTHEAST MCKENZIE

AT 655 PM MDT...A TORNADO WAS REPORTED 5 MILES EAST OF THE TOWN
OF KEEN...OR 32 MILES NORTHEAST OF WATFORD CITY.
THE STORM IS MOVING TO THE EAST NORTHEAST AT 30 MPH.

IF YOU ARE IN THE PATH OF THIS TORNADO...GO TO A BASEMENT SHELTER
IF AVAILABLE...OTHERWISE TO A CENTRAL INTERIOR ROOM ON THE LOWEST
FLOOR.  ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING.
IF YOU ARE IN AN AREA THREATENED BY THE STORM..GO TO A REINFORCED
SHELTER AND PREPARE FOR DAMAGING WIND...LARGE HAIL...VERY HEAVY
RAIN AND LIGHTNING.

RICHMOND

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 7:38 PM CDT	Severe Thunderstorm Warning	BIS	McLean, Ward	52 min
Jun 18, 8:05 PM CDT	Severe Thunderstorm Warning	BIS	McLean, Mercer	55 min
Jun 18, 8:46 PM CDT	Severe Thunderstorm Warning	BIS	Bowman, Slope	44 min
Jun 18, 8:52 PM CDT	Severe Thunderstorm Warning	BIS	Stark	53 min
Jun 18, 9:06 PM CDT	Severe Thunderstorm Warning	BIS	McLean, Mercer, Oliver	54 min
Jun 18, 9:29 PM CDT	Severe Thunderstorm Warning	BIS	Adams, Bowman	61 min

Nearby

Tornado Warnings in North Dakota, 1990 Every tornado warning in 1990 Tornadoes in 1990

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.