Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 54, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Jun 29, 1997, 6:56 PM CDT for Williams County, North Dakota. It was in force for 64 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
- Jun 29, 1997, 6:56 PM CDT (23:56 UTC)
- Expired
- Jun 29, 1997, 8:00 PM CDT
- In force
- 64 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
County Williams County, ND
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 11.9 hours before the alert went out and 272 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
- 25 J/kg
- Mixed-layer CIN
- -326 J/kg
- Mixed-layer LCL
- 1908 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -30 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 9:32 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau | 43 min |
| Jun 28, 10:07 PM CDT | Tornado Warning | BIS | Bottineau, McHenry | 53 min |
| Jun 28, 11:06 PM CDT | Severe Thunderstorm Warning | BIS | McHenry | 69 min |
| Jun 28, 11:17 PM CDT | Tornado Warning | BIS | McHenry | 28 min |
| Jun 28, 11:46 PM CDT | Tornado Warning | BIS | McHenry | 44 min |
| Jun 29, 12:16 AM CDT | Severe Thunderstorm Warning | BIS | Stark | 59 min |
| Jun 29, 12:32 AM CDT | Severe Thunderstorm Warning | BIS | McKenzie | 58 min |
| Jun 29, 12:33 AM CDT | Severe Thunderstorm Warning | BIS | McHenry | 57 min |
| Jun 29, 2:06 AM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Morton | 69 min |
| Jun 29, 4:45 PM CDT | Severe Thunderstorm Warning | BIS | Williams | 60 min |
| Jun 29, 6:04 PM CDT | Severe Thunderstorm Warning | BIS | Williams | 56 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.