Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 162, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Aug 31, 1997, 10:47 PM CDT for LaMoure County, North Dakota. It was in force for 43 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 31, 1997, 10:47 PM CDT (03:47 UTC)
- Expired
- Aug 31, 1997, 11:30 PM CDT
- In force
- 43 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
County LaMoure County, ND
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 3.8 hours before the alert went out and 169 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
- 1215 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 1935 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 115 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBIS 010349 RRA SVRBIS NDC045-010430- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BISMARCK ND 1047 PM CDT SUN AUG 31 1997 THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1130 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST NORTH DAKOTA ...LA MOURE COUNTY AT 1045 PM CDT BISMARCK WEATHER RADAR INDICATED A CLUSTER OF SEVERE THUNDERSTORMS COVERING THE WESTERN HALF OF LAMORE COUNTY...CENTERED 30 MILES SOUTH OF JAMESTOWN. THE STORMS WERE MOVING SOUTHEAST 25 MPH. HEAVY RAIN AND FLOODING ARE POSSIBLE WITH THESE THUNDERSTORMS. CITIES IN THE PATH OF THESE STORMS ARE EDGELEY...LAMOURE...AND KjULM. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. RL/TSW
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 31, 6:25 PM CDT, 4 hours 22 minutes before
NDZ004-005-012-013-022-023-010030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 625 PM CDT SUN AUG 31 1997 ...TORNADO WATCH CANCELLED FOR PORTIONS OF NORTHCENTRAL NORTH DAKOTA... THE TORNADO WATCH THAT WAS IN EFFECT FOR PORTIONS OF NORTHCENTRAL NORTH DAKOTA HAS BEEN CANCELLED. COUNTIES NO LONGER IN THE WATCH INCLUDE BOTTINEAU...MCHENERY...SHERIDAN...WELLS...PIERCE AND ROLETTE. THUNDERSTORMS ARE STILL POSSIBLE THIS EVENING IN THE ABOVE MENTIONED COUNTIES. HINTZ
Special weather statement, Aug 31, 6:27 PM CDT, 4 hours 20 minutes before
NDZ004-005-012-013-022-023-010030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 625 PM CDT SUN AUG 31 1997 ...TORNADO WATCH CANCELLED FOR PORTIONS OF NORTHCENTRAL NORTH DAKOTA... THE TORNADO WATCH THAT WAS IN EFFECT FOR PORTIONS OF NORTHCENTRAL NORTH DAKOTA HAS BEEN CANCELLED. COUNTIES NO LONGER IN THE WATCH INCLUDE BOTTINEAU...MCHENERY...SHERIDAN...WELLS...PIERCE AND ROLETTE. THUNDERSTORMS ARE STILL POSSIBLE THIS EVENING IN THE ABOVE MENTIONED COUNTIES. HINTZ
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 7:16 PM CDT | Tornado Warning | BIS | Stutsman | 44 min |
| Aug 31, 7:31 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Kidder | 44 min |
| Aug 31, 7:57 PM CDT | Severe Thunderstorm Warning | BIS | Stutsman | 33 min |
| Aug 31, 8:13 PM CDT | Severe Thunderstorm Warning | BIS | Kidder | 47 min |
| Aug 31, 8:27 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh | 48 min |
| Aug 31, 8:57 PM CDT | Tornado Warning | BIS | Stutsman | 33 min |
| Aug 31, 9:06 PM CDT | Severe Thunderstorm Warning | BIS | Kidder | 69 min |
| Aug 31, 9:13 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh | 47 min |
| Aug 31, 9:31 PM CDT | Severe Thunderstorm Warning | BIS | Logan, Stutsman | 44 min |
| Aug 31, 10:04 PM CDT | Severe Thunderstorm Warning | BIS | LaMoure | 41 min |
| Aug 31, 10:41 PM CDT | Severe Thunderstorm Warning | BIS | Dickey | 64 min |
| Sep 1, 12:49 AM CDT | Severe Thunderstorm Warning | BIS | Stutsman | 41 min |
| Sep 1, 12:54 AM CDT | Severe Thunderstorm Warning | BIS | Logan, McIntosh | 51 min |
| Sep 1, 1:31 AM CDT | Severe Thunderstorm Warning | BIS | Stutsman | 14 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.