Alert archive / North Dakota / Tornado Warnings in 1993

Tornado Warning 10, NWS Bismarck, ND

July 22, 1993McLean County, Ward County, North Dakota

NWS Bismarck, ND issued this tornado warning at Jul 22, 1993, 6:25 PM CDT for McLean County, Ward County, North Dakota. It was in force for 35 min.

The area

The counties it named.

The facts

Issued
Jul 22, 1993, 6:25 PM CDT (23:25 UTC)
Expired
Jul 22, 1993, 7:00 PM CDT
In force
35 min
Issued by
NWS Bismarck, ND
Area
Whole counties

Counties McLean County, ND, Ward County, ND

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 11.4 hours before the alert went out and 385 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, Glasgow Intl Airport, MT at 12:00Z on 1993-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 99 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, Glasgow Intl Airport, MT at 12:00Z on 1993-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 square meters per square second.19395878Sfc1 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
99 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
1212 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
0 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 
TTAA00 KBIS 222325
TORBIS
NDC055-101-230000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE BISMARCK ND
625 PM CDT THU JUL 22 1993

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 700 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE CENTRAL PART OF NORTH DAKOTA
      NORTH CENTRAL MCLEAN...

   IN THE NORTH CENTRAL PART OF NORTH DAKOTA
      SOUTHEAST WARD...

AT 620 PM CDT A TORNADO WAS REPORTED NEAR DOUGLAS...30 MILES SOUTH
OF MINOT MOVING EAST NORTHEAST AT 20 MPH.
.
TOWNS NEAR THE PATH OF THIS TORNADO INCLUDE MAX AND BENEDICT.

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...STAY AWAY FROM WINDOWS.  ABANDON CARS AND MOBILE HOMES.

THIS STORM MAY ALSO CAUSE FLOODING OF SMALL STREAMS AND
UNDERPASSES.

 LEBLANG

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 22, 4:25 PM CDT, 2 hours before
NDZ005>014-222220-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
420 PM CDT THU JUL 22 1993

...STRONG THUNDERSTORM RUMBLING ACROSS EXTREME SOUTH CENTRAL NORTH
DAKOTA...
...A FLASH FLOOD WATCH IS IN EFFECT TONIGHT FOR A PORTION OF EAST
CENTRAL NORTH DAKOTA...

AT 415 PM CDT WEATHER RADAR INDICATED A STRONG THUNDERSTORM NEAR FORT
YATES...OR 60 MILES SOUTH OF BISMARCK...MOVING EAST NORTHEAST AT 25 MPH.

THIS THUNDERSTORM WILL MOVE ACROSS THE MISSOURI RIVER AND INTO EMMONS
COUNTY BY 425 PM CDT. TOWNS NEAR ITS PATH INCLUDE LINTON...
STRASBURG...AND HAZELTON. PEA TO MABLE SIZE HAIL...TORRENTIAL RAINS
WHICH MAY CAUSE ADDITIONAL FLOODING....AND GUSTY WINDS ARE POSSIBLE
WITH THE PASSAGE OF THIS STORM.

ANOTHER BAND OF THUNDERSTORMS WITH VERY HEAVY RAIN
WERE LOCATED FROM 40 MILES EAST OF BISMACRK...NORTHEAST THROUGH THE
DEVILS LAKE AREA. THESE THUNDERSTORMS MAY PRODUCE FLASH FLOODING AND
SIGNIFICANT PONDING OF WATER WITH THEIR PASSAGE AS THEY MOVE NORTH
NORTHEAST AT 25 MPH.

REMEMBER...EVERYONE IN LOW LYING OR FLOOD PRONE AREAS SHOULD BE PREPARED
TO MOVE TO HIGH GROUND SHOULD FLOODING DEVELOP. IF FLOODING OCCURS...DO
NOT ATTEMPT TO DRIVE ACROSS FLOODED ROADS. ALSO...WATCH OUT FOR WASHED
OUT BRIDGES AND CULVERTS.

LEBLANG
Special weather statement, Jul 22, 5:40 PM CDT, 45 minutes before
NDZ005>014-222320-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
535 PM CDT THU JUL 22 1993

...STRONG THUNDERSTORMS RUMBLING ACROSS EXTREME SOUTH CENTRAL
NORTH DAKOTA...

AT 530 PM...AN AREA OF INTENSE THUNDERSTORMS WAS OVER SOUTH CENTRAL
NORTH DAKOTA...ALONG THE SOUTH DAKOTA BORDER. THIS ACTIVITY WAS
LOCATED OVER SOUTHERN EMMONS COUNTY...60 MILES SOUTHEAST OF BISMARCK
...AND WAS MOVING TOWARD THE NORTHEAST AT 20 MPH.

TOWNS IN THE PATH OF THESE STORMS INCLUDE STRASBURG...HAGUE AND
ZEELAND. THE TOWN OF WISHEK SHOULD BE AFFECTED BY 600 PM.

HEAVY RAINS...CONTINUOUS LIGHTNING STRIKES...AND SMALL HAIL CAN BE
EXPECTED IN THIS AREA UNTIL 700 PM.

...A FLASH FLOOD WATCH IS IN EFFECT TONIGHT FOR A PORTION OF EAST
CENTRAL NORTH DAKOTA...

MEANWHILE LARGE AREA OF SHOWERS AND THUNDERSTORMS...FROM ABOUT 30
MILES WEST OF JAMESTOWN NORTHEASTWARD THROUGH DEVILS LAKE...WAS MOVING
TO THE NORTHEAST AT 20 MPH. ANOTHER ONE TO TWHO INCHES OF RAIN CAN
BE EXPECTED STUTSMAN...FOSTER...EDDY AND RAMSEY COUNTIES...INCLUDING
THE CITY OF DEVILS LAKE...BETWEEN NOW AND 900 PM.

RCM
Special weather statement, Jul 22, 6:17 PM CDT, 8 minutes before
NDZ005-006-230015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
615 PM CDT THU JUL 22 1993

...A DEVELOPING LINE OF THUNDERSTORMS MINOT SOUTHWARD...

AT 610 PM...A LINE OF THUNDERSTORMS HAD FORMED FROM MINOT TO 50 MILES
SOUTH OF MINOT.

THE MOST INTENSE CELL WAS 30 MILES SOUTH OF MINOT AND SHOULD MOVE
INTO THE TOWN OF MAX BY 630 PM.

ANOTHER STRONG LITTLE THUNDERSTORM WAS OVER THE CITY OF MINOT.

GUSTY WINDS...SMALL HAIL...FREQUENT LIGHTNING STRIKES...AND BRIEF
HEAVY RAINS CAN BE EXPECTED WITH THESE SMALL THUNDERSTORMS.

DUE TO RECENT DEVELOPMENT...NO MOVEMENT HAS BEEN DETERMINED.
<
RCM

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 11:11 PM CDTSevere Thunderstorm WarningBISMcKenzie64 min
Jul 21, 11:49 PM CDTSevere Thunderstorm WarningBISWilliams56 min
Jul 22, 12:43 AM CDTSevere Thunderstorm WarningBISDivide62 min
Jul 22, 12:50 AM CDTSevere Thunderstorm WarningBISGrant40 min
Jul 22, 3:03 AM CDTFlash Flood WarningBISMorton87 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.