Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 52, NWS Bismarck, ND

June 29, 1997Williams County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jun 29, 1997, 4:45 PM CDT for Williams County, North Dakota. It was in force for 60 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, 4:45 PM CDT (21:45 UTC)
Expired
Jun 29, 1997, 5:45 PM CDT
In force
60 min
Issued by
NWS Bismarck, ND
Area
Whole counties

County Williams County, ND

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 9.8 hours before the alert went out and 272 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 12:00Z on 1997-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 25 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 12:00Z on 1997-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -30 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
25 J/kg
Mixed-layer CIN
-326 J/kg
Mixed-layer LCL
1908 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
-30 m²/s²
0-3 km storm-relative helicity
64 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.

788 
WUUS1 KISN 292146 RRA
SVRISN
NDC105-292245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILLISTON ND
445 PM CDT SUN JUN 29 1997
 
THE NATIONAL WEATHER SERVICE IN WILLISTON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  545 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHWEST NORTH DAKOTA
 
   ...NORTH CENTRAL WILLIAMS COUNTY
 
AT 440 PM CDT WILLISTON RADAR INDICATED A SEVERE THUNDERSTORM LOCATED 25
TO 30 MILES NORTH OF WILLISTON. THIS STORM WILL LIKELY PRODUCE LARGE
HAIL, STRONG WINDS, AND HEAVY RAIN. THIS STORM HAS SHOWEN LITTLE TO NO
MOVEMENT SO SOME LOCALIZED FLOODING IS ALSO POSSIBLE.
 
 
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 28, 9:32 PM CDTSevere Thunderstorm WarningBISBottineau43 min
Jun 28, 10:07 PM CDTTornado WarningBISBottineau, McHenry53 min
Jun 28, 11:06 PM CDTSevere Thunderstorm WarningBISMcHenry69 min
Jun 28, 11:17 PM CDTTornado WarningBISMcHenry28 min
Jun 28, 11:46 PM CDTTornado WarningBISMcHenry44 min
Jun 29, 12:16 AM CDTSevere Thunderstorm WarningBISStark59 min
Jun 29, 12:32 AM CDTSevere Thunderstorm WarningBISMcKenzie58 min
Jun 29, 12:33 AM CDTSevere Thunderstorm WarningBISMcHenry57 min
Jun 29, 2:06 AM CDTSevere Thunderstorm WarningBISBurleigh, Morton69 min
Jun 29, 6:04 PM CDTSevere Thunderstorm WarningBISWilliams56 min
Jun 29, 6:56 PM CDTSevere Thunderstorm WarningBISWilliams64 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.