Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 92, NWS Bismarck, ND

July 17, 1997Golden Valley County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 17, 1997, 11:23 PM MDT for Golden Valley County, North Dakota. It was in force for 52 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 17, 1997, 11:23 PM MDT (05:23 UTC)
Expired: Jul 18, 1997, 12:15 AM MDT
In force: 52 min
Issued by: NWS Bismarck, ND
Area: Whole counties

County Golden Valley County, ND

The radar

The Bismarck radar (KBIS), 235 km from the middle of the area, began a volume at 05:25 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Jul 17, 11:35 PM MDT	Hail 0.75	Beach, ND	60 mph winds also occurred

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jul 17, 11:00 PM MDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 5.4 hours before the alert went out and 240 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1566 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 1879 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBIS 180523 RRA
SVRBIS
NDC033-180615-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
1223 AM CDT (1123 PM MDT) FRI JUL 18 1997
 
THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  115 AM CDT (1215 AM MDT)
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL NORTH DAKOTA
 
   ...GOLDEN VALLEY COUNTY
 
AT 1120 PM MDT A LINE OF SEVERE THUNDERSTORMS WAS MOVING INTO WESTERN
GOLDEN VALLEY COUNTY...55 MILES NORTHWEST OF BOWMAN NEAR THE TOWN OF
BEACH. THE THUNDERSTORMS WERE MOVING EAST AT 30 MPH. THE THUNDERSTORMS
WILL MOVE INTO THE TOWNS OF BEACH...GOLVA...AND SENTINEL BUTTE.
 
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
DON'T DRIVE INTO AREAS &WHERE WATER COVERS THE ROAD.
 
 
VAN ESS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 11:19 PM MDT	Severe Thunderstorm Warning	BIS	McKenzie	56 min
Jul 17, 11:45 PM MDT	Severe Thunderstorm Warning	BIS	Billings	60 min
Jul 18, 12:24 AM MDT	Severe Thunderstorm Warning	BIS	Adams, Hettinger	51 min
Jul 18, 1:05 AM MDT	Severe Thunderstorm Warning	BIS	Stark	55 min
Jul 18, 1:28 AM MDT	Severe Thunderstorm Warning	BIS	Hettinger	62 min
Jul 18, 2:02 AM MDT	Severe Thunderstorm Warning	BIS	Hettinger, Stark	58 min
Jul 18, 3:20 AM MDT	Severe Thunderstorm Warning	BIS	Burleigh, Morton	55 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 1997 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.