Alert archive / North Dakota / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 151, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Aug 8, 1999, 11:19 PM CDT for Ward County, North Dakota. It was in force for 56 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 8, 1999, 11:19 PM CDT (04:19 UTC)
- Expired
- Aug 9, 1999, 12:15 AM CDT
- In force
- 56 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Ward County, ND
The radar
The Minot AFB radar (KMBX), 54 km from the middle of the area, began a volume at 04:20 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
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 8, 9:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 4.3 hours before the alert went out and 441 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
- 590 J/kg
- Mixed-layer CIN
- -249 J/kg
- Mixed-layer LCL
- 1278 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 221 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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 |
|---|---|---|---|---|
| Aug 8, 8:04 PM CDT | Severe Thunderstorm Warning | BIS | Dunn | 56 min |
| Aug 8, 8:45 PM CDT | Severe Thunderstorm Warning | BIS | Stark | 45 min |
| Aug 8, 9:04 PM CDT | Severe Thunderstorm Warning | BIS | McKenzie | 61 min |
| Aug 8, 9:07 PM CDT | Severe Thunderstorm Warning | BIS | Morton | 53 min |
| Aug 8, 9:17 PM CDT | Severe Thunderstorm Warning | BIS | Williams | 63 min |
| Aug 8, 9:22 PM CDT | Severe Thunderstorm Warning | BIS | Divide | 63 min |
| Aug 8, 9:43 PM CDT | Severe Thunderstorm Warning | BIS | Burke | 47 min |
| Aug 8, 10:14 PM CDT | Severe Thunderstorm Warning | BIS | Renville, Ward | 61 min |
| Aug 8, 10:16 PM CDT | Severe Thunderstorm Warning | BIS | Williams | 29 min |
| Aug 8, 10:39 PM CDT | Severe Thunderstorm Warning | BIS | Mountrail | 66 min |
| Aug 8, 11:19 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau, Renville | 56 min |
| Aug 9, 12:27 AM CDT | Severe Thunderstorm Warning | BIS | Ward | 63 min |
| Aug 9, 1:14 AM CDT | Severe Thunderstorm Warning | BIS | McHenry | 46 min |
| Aug 9, 1:22 AM CDT | Severe Thunderstorm Warning | BIS | McLean | 53 min |
| Aug 9, 2:05 AM CDT | Severe Thunderstorm Warning | BIS | Sheridan | 55 min |
| Aug 9, 4:03 AM CDT | Severe Thunderstorm Warning | BIS | Stutsman | 42 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 1999Every severe thunderstorm warning in 1999
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; radar from the NEXRAD Level II archive.