Alert archive / North Dakota / Tornado Warnings in 1997

Tornado Warning 22, NWS Bismarck, ND

August 27, 1997Williams County, North Dakota

NWS Bismarck, ND issued this tornado warning at Aug 27, 1997, 4:33 PM CDT for Williams County, North Dakota. It was in force for 27 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: Aug 27, 1997, 4:33 PM CDT (21:33 UTC)
Expired: Aug 27, 1997, 5:00 PM CDT
In force: 27 min
Issued by: NWS Bismarck, ND
Area: Whole counties

County Williams County, ND

The watch it was issued in

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

Issued	Product	Office	Lasted
Aug 27, 4:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 9.6 hours before the alert went out and 231 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: 983 J/kg
Mixed-layer CIN: -327 J/kg
Mixed-layer LCL: 1776 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KISN 272134 RRA
TORISN
NDC105-272200-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WILLISTON ND
433 PM CDT WED AUG 27 1997
 
THE NATIONAL WEATHER SERVICE IN WILLISTON HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  500 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHWEST NORTH DAKOTA
 
   ...NORTHWESTERN WILLIAMS COUNTY
 
AT 427 PM CDT...THE NATIONAL WEATHER SERVICE RECEIVED A REPORT OF A
TORNADO IN NORTHEAST MONTANA MOVING TOWARD THE GRENORA AREA. NO FURTHER
INFORMATION IS AVAILABLE AT THIS TIME. PERSONS IN THE GRENORA AREA
SHOULD TAKE COVER IMMEDIATELY.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.
 
 
CARICO
&

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 27, 3:55 PM CDT	Severe Thunderstorm Warning	BIS	Divide	65 min
Aug 27, 4:55 PM CDT	Severe Thunderstorm Warning	BIS	Divide	65 min
Aug 27, 5:06 PM CDT	Severe Thunderstorm Warning	BIS	Burke	69 min
Aug 27, 5:16 PM CDT	Severe Thunderstorm Warning	BIS	Williams	59 min
Aug 27, 6:15 PM CDT	Severe Thunderstorm Warning	BIS	Burke, Renville, Ward	45 min
Aug 27, 6:15 PM CDT	Severe Thunderstorm Warning	BIS	Mountrail	45 min
Aug 27, 6:22 PM CDT	Severe Thunderstorm Warning	BIS	Williams	68 min

Nearby

Tornado Warnings in North Dakota, 1997 Every tornado warning in 1997 Tornadoes 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.