Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 140, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Aug 27, 1997, 6:22 PM CDT for Williams County, North Dakota. It was in force for 68 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, 6:22 PM CDT (23:22 UTC)
- Expired
- Aug 27, 1997, 7:30 PM CDT
- In force
- 68 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, 11.4 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KISN 272323 RRA SVRISN NDC105-280030- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE WILLISTON ND 622 PM CDT WED AUG 27 1997 THE NATIONAL WEATHER SERVICE IN WILLISTON HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 730 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHWEST NORTH DAKOTA ...WILLIAMS COUNTY AT 615 PM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS WERE LOCATED IN EASTERN WILLIAMS COUNTY. THE LINE OF STORMS EXTENDED FROM 10 MILES NORTHEAST OF WILLISTON TO 70 MILES NORTHEAST OF WILLISTON. THE STRONGEST STORM WAS LOCATED 31 MILES NORTHEAST OF WILLISTON...OR 5 MILES NORTH OF RAY. THE STORMS WERE MOVING TO THE SOUTHEAST AT ABOUT 25 MPH. THESE STORMS HAVE A HISTORY OF PRODUCING STRONG WINDS AND 1 INCH HAIL. 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. CECIL &
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Aug 27, 3:05 PM CDT, 3 hours 17 minutes before
NDZ001>004-009>012-017-272200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 305 PM CDT WED AUG 27 1997 ...STRONG THUNDERSTORMS MAY PRODUCE SEVERE WEATHER IN NORTHWEST NORTH DAKOTA... A CLUSTER OF THUNDERSTORMS IN SOUTHEAST SASKATCHEWAN WILL MOVE INTO EXTREME NORTHWEST NORTH DAKOTA AROUND 400 PM CDT. THE CONDITIONS ARE FAVORABLE FOR SEVERE WEATHER IN THE FORM OF LARGE HAIL AND DAMAGING WINDS. IF THESE STORMS CONTINUE ON THEIR PATH...PERSONS IN DIVIDE AND BURKE COUNTIES SHOULD EXPECT THE POSSIBILITY OF SEVERE WEATHER. BE ON THE LOOKOUT AND LISTEN FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. ABELING
Special weather statement, Aug 27, 3:07 PM CDT, 3 hours 15 minutes before
NDZ001>004-009>012-017-272200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 305 PM CDT WED AUG 27 1997 ...STRONG THUNDERSTORMS MAY PRODUCE SEVERE WEATHER IN NORTHWEST NORTH DAKOTA... A CLUSTER OF THUNDERSTORMS IN SOUTHEAST SASKATCHEWAN WILL MOVE INTO EXTREME NORTHWEST NORTH DAKOTA AROUND 400 PM CDT. THE CONDITIONS ARE FAVORABLE FOR SEVERE WEATHER IN THE FORM OF LARGE HAIL AND DAMAGING WINDS. IF THESE STORMS CONTINUE ON THEIR PATH...PERSONS IN DIVIDE AND BURKE COUNTIES SHOULD EXPECT THE POSSIBILITY OF SEVERE WEATHER. BE ON THE LOOKOUT AND LISTEN FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. ABELING
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, 4:33 PM CDT | Tornado Warning | BIS | Williams | 27 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 |
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.