Alert archive / North Dakota / Severe Thunderstorm Watches in 1997
Severe Thunderstorm Watch 716
The Storm Prediction Center issued this severe thunderstorm watch at Aug 27, 1997, 3:00 PM MDT for 6 counties in Montana; 7 counties in North Dakota. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 27, 1997, 3:00 PM MDT (21:00 UTC)
- Expired
- Aug 27, 1997, 9:00 PM MDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
Counties Daniels County, MT, McCone County, MT, Richland County, MT, Roosevelt County, MT, Sheridan County, MT, Valley County, MT, Burke County, ND, Divide County, ND, Dunn County, ND, McKenzie County, ND, Mountrail County, ND, Renville County, ND, Williams County, ND
The radar
The Glasgow radar (KGGW), 118 km from the middle of the area, began a volume at 21:03 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.
Warnings issued inside it
16 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 3:33 PM MDT | Tornado Warning | BIS | Williams | 27 min |
| Aug 27, 3:38 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Roosevelt | 67 min |
| Aug 27, 3:55 PM MDT | Severe Thunderstorm Warning | BIS | Divide | 65 min |
| Aug 27, 4:06 PM MDT | Severe Thunderstorm Warning | BIS | Burke | 69 min |
| Aug 27, 4:16 PM MDT | Severe Thunderstorm Warning | BIS | Williams | 59 min |
| Aug 27, 4:35 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 55 min |
| Aug 27, 4:45 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Roosevelt | 60 min |
| Aug 27, 5:15 PM MDT | Severe Thunderstorm Warning | BIS | Burke, Renville, Ward | 45 min |
| Aug 27, 5:15 PM MDT | Severe Thunderstorm Warning | BIS | Mountrail | 45 min |
| Aug 27, 5:22 PM MDT | Severe Thunderstorm Warning | BIS | Williams | 68 min |
| Aug 27, 6:15 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt, Sheridan | 60 min |
| Aug 27, 6:47 PM MDT | Flash Flood Warning | GGW | Roosevelt | 3 hr |
| Aug 27, 7:15 PM MDT | Severe Thunderstorm Warning | GGW | Richland, Roosevelt | 60 min |
| Aug 27, 7:20 PM MDT | Severe Thunderstorm Warning | BIS | Williams | 55 min |
| Aug 27, 7:34 PM MDT | Severe Thunderstorm Warning | BIS | McKenzie | 56 min |
| Aug 27, 7:55 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 65 min |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 9.0 hours before the alert went out and 116 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
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
Nearby
Severe Thunderstorm Watches in North Dakota, 1997Severe Thunderstorm Watches in Montana, 1997Every severe thunderstorm watch 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; radar from the NEXRAD Level II archive.