Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 49, NWS Bismarck, ND

June 29, 1997McKenzie County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jun 29, 1997, 12:32 AM CDT for McKenzie County, North Dakota. It was in force for 58 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, 12:32 AM CDT (05:32 UTC)
Expired
Jun 29, 1997, 1:30 AM CDT
In force
58 min
Issued by
NWS Bismarck, ND
Area
Whole counties

County McKenzie County, ND

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 28, 10:30 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 5.5 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 1997-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 547 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 1997-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 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
547 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
2546 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
25 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

779 
WUUS1 KISN 290534 RRA
SVRISN
NDC053-290630-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILLISTON ND
1232 AM CDT SUN JUN 29 1997
 
THE NATIONAL WEATHER SERVICE IN WILLISTON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  130 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL NORTH DAKOTA
 
   ...MCKENZIE COUNTY
 
AT 1228 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM LOCATED 35 MILES SOUTHEAST OF WILLISTON OR 10 MILES SOUTH
OF ARNEGARD. THE STORM WAS MOVING TO THE EAST SOUTHEAST AT 15 MPH.
 
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
 
BRW

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, 12:33 AM CDTSevere Thunderstorm WarningBISMcHenry57 min
Jun 29, 2:06 AM CDTSevere Thunderstorm WarningBISBurleigh, Morton69 min
Jun 29, 4:45 PM CDTSevere Thunderstorm WarningBISWilliams60 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.