Alert archive / North Dakota / Tornado Warnings in 1993

Tornado Warning 2, NWS Grand Forks, ND

June 22, 1993Griggs County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jun 22, 1993, 9:48 PM CDT for Griggs County, North Dakota. It was in force for 57 min.

The area

The counties it named.

The facts

Issued
Jun 22, 1993, 9:48 PM CDT (02:48 UTC)
Expired
Jun 22, 1993, 10:45 PM CDT
In force
57 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

County Griggs County, ND

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 2.8 hours before the alert went out and 201 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 1993-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 592 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 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 1993-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 square meters per square second.193958Sfc1 km3 km6 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
592 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
1679 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
178 m²/s²
Significant tornado parameter
0.1
Supercell composite
3.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFAR 230248
TORFAR
NDC039-230345-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE FARGO ND
948 PM CDT TUE JUN 22 1993

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 1045 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE EAST CENTRAL PART OF NORTH DAKOTA
      SOUTHERN GRIGGS

AT 947 PM CDT...LAW ENFORCEMENT REPORTED A TORNADO ON THE GROUND
JUST WEST OF HANNAFORD ND IN SOUTHERN GRIGGS COUNTY MOVING WEST-
NORTHWEST.

IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE TO BE IS IN
A BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...FIND SHELTER IN A CENTRAL INTERIOR
ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...
PILLOWS...OR CUSHIONS TO COVER YOUR BODY AND PROTECT YOUR HEAD.
AVOID WINDOWS.  ABANDON CARS AND MOBILE HOMES FOR A REINFORCED
BUILDING.

THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE.  OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR POSSIBLE.  AVOID WINDOWS.  PROTECT YOURSELF FROM FLYING
DEBRIS WITH CUSHIONS...BLANKETS...OR PILLOWS.

SPIES

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 22, 10:40 PM CDTSevere Thunderstorm WarningFGFDickey65 min
Jun 23, 6:59 PM CDTSevere Thunderstorm WarningFGFSargent61 min

Nearby

Tornado Warnings in North Dakota, 1993Every tornado warning in 1993Tornadoes in 1993

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.