Alert archive / North Dakota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 57, NWS Bismarck, ND

July 16, 1990Mountrail County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 16, 1990, 7:12 PM CDT for Mountrail County, North Dakota. It was in force for 63 min.

The area

The counties it named.

The facts

Issued
Jul 16, 1990, 7:12 PM CDT (00:12 UTC)
Expired
Jul 16, 1990, 8:15 PM CDT
In force
63 min
Issued by
NWS Bismarck, ND
Area
Whole counties

County Mountrail 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, 0.2 hours before the alert went out and 202 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 1990-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1191 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 1990-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 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
1191 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
2488 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
241 m²/s²
Significant tornado parameter
0.0
Supercell composite
10.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KISN 170012
SVRISN
NDC061-170115-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE WILLISTON ND
712 PM CDT MON JUL 16 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 815 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE NORTHWEST PART OF NORTH DAKOTA
      SOUTHERN MOUNTRAIL...THE CITY OF STANLEY...THE TOWN OF 
      NEW TOWN...THE TOWN OF PARSHAL

AT (700 PM CDT A SEVERE THUNDERSTORM WAS INDICATED BY RADAR 25
MILES EAST OF WILLISTON NORTH DAKOTA MOVING TO THE EAST SOUTHEAST
AT 20 MILES PER HOUR.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADWAYS QUICKLY...
AVOID DRIVING INTO AREAS WHERE WATER COVERS THE ROAD.

 ALLARD

What forecasters said that day

The local office's own words before this severe thunderstorm 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 16, 5:06 PM CDT, 2 hours 6 minutes before
NDZ002-162305

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLISTON ND
505 PM CDT MON JUL 16 1990

...STRONG THUNDERSTORMS ENTERING NORTHWESTERN NORTH DAKOTA...

AT 500 PM CDT A STRONG THUNDERSTORM WAS LOCATED 25 MILES NORTHWEST OF
THE CITY OF WILLISTON AND MOVING TO THE EAST AT ABOUT 20 MPH.  THIS
THUNDERSTORM WILL PASS THROUGH OR JUST NORTH OF THE CITY OF WILLISTON
WITHIN THE NEXT HALF HOUR.  ANOTHER STRONG THUNDERSTORM WAS LOCATED 20
MILES SOUTHWEST OF WILLISTON AND WAS ALSO MOVING TO THE EAST AT 20 MPH.
THIS THUNDERSTORM WILL PASS VERY NEAR TO...OR THROUGH THE TOWN OF
TRENTON WITHIN THE NEXT HALF HOUR.

THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING DEADLY LIGHTNING STRIKES...
SM9ALL HAIL...STRONG GUSTY WIND AND BRIEF HEAVY RAIN.

IF THESE THUNDERSTORMS APPROACH YOUR AREA SEEK SHELTER INDOORS.

MARTIN
Special weather statement, Jul 16, 7:09 PM CDT, 3 minutes before
NDZ001>011-170100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
715 PM CDT MON JUL 17 1990

...A TORNADO WATCH REMAINS IN EFFECT FOR NORTHWEST AND NORTH CENTRAL
NORTH DAKOTA UNTIL MIDNIGHT CDT...

AT 700 PM CDT WEATHER RADAR INDICATED SCATTERED STRONG THUNDERSTORMS
EXTENDING FROM EAST OF WILLISTON SOUTHWARD TO NEAR KILLDEER IN DUNN
COUNTY...OR ABOUT 35 MILES NORTH OF DICKINSON. THESE STORMS ARE MOVING
TO THE EAST/SOUTHEAST AT 20 TO 25 MPH.

NO SEVERE WEATHER HAS BEEN REPORTED AT THIS TIME...HOWEVER CONDITIONS
REMAIN FAVORABLE FOR THE DEVELOPMENT OF SEVERE STORMS AND POSSIBLY
A TORNADO. PERSONS IN WESTERN AND CENTRAL NORTH DAKOTA SHOULD REMAIN
ALERT TO CHAGNING WEATHER CONDITIONS AND STAY TUNED FOR FURTHER
STATEMENTS OR WARNINGS.

FORS

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 8:13 PM CDTSevere Thunderstorm WarningBISMcLean, Mercer47 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 1990Every severe thunderstorm warning 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.