Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 57, NWS Bismarck, ND

June 29, 1997McKenzie County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jun 29, 1997, 9:36 PM CDT for McKenzie County, North Dakota. It was in force for 69 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 29, 1997, 9:36 PM CDT (02:36 UTC)
Expired
Jun 29, 1997, 10:45 PM CDT
In force
69 min
Issued by
NWS Bismarck, ND
Area
Whole counties

County McKenzie County, ND

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 2.6 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-pSkew-T log-p diagram, Bismarck Municip, ND at 00:00Z on 1997-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 419 joules per kilogram.LCLEL10008507005003002001001 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 1997-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 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
419 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1495 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
247 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.5

Open this sounding in Storm Lab

The text

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

746 
WUUS1 KISN 300235
SVRISN
NDC053-300345-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILLISTON ND
936 PM CDT SUN JUN 29 1997
 
THE NATIONAL WEATHER SERVICE IN WILLISTON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1045 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL NORTH DAKOTA
 
   ...CENTRAL MCKENZIE COUNTY
 
AT 930 PM STRONG THUNDERSTORMS REMAIN IN PLACE OVER CENTRAL MCKENZIE
COUNNTY. WHEN STORMS REMAIN IN ONE PLACE SUCH AS THIS ONE HAS DONE,
FLOODING IS THE RESULT. DO NOT TRY TO DRIVE ACROSS ROADWAYS THAT BECOME
FLODDED. ALSO THIS STORM HAS PRODUCED 3/4 INCH HAIL 6 MILES EAST OF
ALEXANDER AT AROUND 840 PM AS WELL AS 1.75 INCHES OF RAIN IN 45 MINUTES.
STATED BEFORE, THIS STORM IS A STRONG ONE, PLEASE USE CAUTION.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND 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 ROADS QUICKLY SO
DONT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
 
CHAPMAN
&

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 7:33 PM CDTSevere Thunderstorm WarningBISMcKenzie57 min
Jun 29, 8:28 PM CDTSevere Thunderstorm WarningBISMcKenzie62 min
Jun 30, 2:48 AM CDTSevere Thunderstorm WarningBISBowman42 min
Jun 30, 3:33 AM CDTSevere Thunderstorm WarningBISAdams57 min
Jun 30, 4:32 AM CDTSevere Thunderstorm WarningBISGrant, Hettinger, Sioux58 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 1997Every severe thunderstorm warning in 1997

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.