Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 112, NWS Bismarck, ND

July 24, 1997Bottineau County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 24, 1997, 6:23 PM CDT for Bottineau County, North Dakota. It was in force for 67 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 24, 1997, 6:23 PM CDT (23:23 UTC)
Expired: Jul 24, 1997, 7:30 PM CDT
In force: 67 min
Issued by: NWS Bismarck, ND
Area: Whole counties

County Bottineau County, ND

What was reported inside it

Time	Report	Where	Remark
Jul 24, 6:45 PM CDT	Thunderstorm Wind 70	Lansford, ND	thunderstorm winds tore roof off of dairy barn. The winds also moved a trailer house 3 feet off of its foundation.

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 24, 5:45 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.4 hours before the alert went out and 225 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: 1188 J/kg
Mixed-layer CIN: -188 J/kg
Mixed-layer LCL: 922 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 44 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.

000 
TTAA00 KBIS 242323 RRA
SVRBIS
NDC009-250030-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
623 PM CDT THU JUL 24 1997
 
THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  730 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL NORTH DAKOTA
 
   ...BOTTINEAU COUNTY
 
THE SEVERE THUNDERSTORM WARNING FOR EASTERN BOTTINEAU COUNTY HAS BEEN
EXPANDED TO INCLUDE ALL OF BOTTINEAU COUNTY. AT 617 PM CDT WEATHER
RADARS INDICATED A LINE OF SEVERE THUNDERSTORMS FROM 50 MILES NORTH OF
MINOT NEAR ANTLER TO 65 MILES NORTHEAST OF MINOT OR 10 MILES NORTH OF
BOTTINEAU. THE STORMS WERE MOVING EAST AT 30 MPH. TOWNS IN ITS PATH ARE
BOTTINEAU...SOURIS...WESTHOPE. AT 617 PM CDT 3/4 INCH HAIL WAS REPORTED
AT SOURIS.
 
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
 
 
 
&

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 7:20 PM CDT	Severe Thunderstorm Warning	BIS	Mountrail	55 min
Jul 23, 7:36 PM CDT	Tornado Warning	BIS	Renville	39 min
Jul 23, 8:15 PM CDT	Severe Thunderstorm Warning	BIS	Mountrail	60 min
Jul 23, 8:18 PM CDT	Severe Thunderstorm Warning	BIS	Ward	42 min
Jul 23, 8:18 PM CDT	Tornado Warning	BIS	Renville, Ward	42 min
Jul 23, 8:30 PM CDT	Severe Thunderstorm Warning	BIS	McHenry	60 min
Jul 23, 9:00 PM CDT	Severe Thunderstorm Warning	BIS	Ward	30 min
Jul 23, 9:26 PM CDT	Severe Thunderstorm Warning	BIS	McHenry	64 min
Jul 23, 10:02 PM CDT	Severe Thunderstorm Warning	BIS	Pierce	58 min
Jul 24, 3:35 AM CDT	Severe Thunderstorm Warning	BIS	McKenzie	55 min
Jul 24, 6:00 PM CDT	Severe Thunderstorm Warning	BIS	Bottineau	45 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.