Alert archive / North Dakota / Severe Thunderstorm Watches in 1997
Severe Thunderstorm Watch 595
The Storm Prediction Center issued this severe thunderstorm watch at Jul 10, 1997, 4:30 PM MDT for 11 counties in Montana; 13 counties in North Dakota; Harding County, Perkins County, South Dakota. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 10, 1997, 4:30 PM MDT (22:30 UTC)
- Expired
- Jul 10, 1997, 10:00 PM MDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 26 counties
Carter County, MT, Custer County, MT, Daniels County, MT, Dawson County, MT, Fallon County, MT, McCone County, MT, Prairie County, MT, Richland County, MT, Roosevelt County, MT, Sheridan County, MT, Wibaux County, MT, Adams County, ND, Billings County, ND, Bowman County, ND, Burke County, ND, Divide County, ND, Dunn County, ND, Golden Valley County, ND, Hettinger County, ND, McKenzie County, ND, Mountrail County, ND, Slope County, ND, Stark County, ND, Williams County, ND, Harding County, SD, Perkins County, SD
The radar
The Bismarck radar (KBIS), 224 km from the middle of the area, began a volume at 22:33 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
6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 5:01 PM MDT | Severe Thunderstorm Warning | UNR | Harding | 34 min |
| Jul 10, 5:15 PM MDT | Severe Thunderstorm Warning | BIS | Billings, Slope | 45 min |
| Jul 10, 5:31 PM MDT | Severe Thunderstorm Warning | BIS | McKenzie | 59 min |
| Jul 10, 6:11 PM MDT | Severe Thunderstorm Warning | BIS | Dunn | 64 min |
| Jul 10, 6:45 PM MDT | Severe Thunderstorm Warning | BIS | Burke, Mountrail | 60 min |
| Jul 10, 7:52 PM MDT | Severe Thunderstorm Warning | BIS | Mountrail, Ward | 68 min |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 10.5 hours before the alert went out and 228 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
- 930 J/kg
- Mixed-layer CIN
- -333 J/kg
- Mixed-layer LCL
- 1194 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 3:00 PM MDT | Severe Thunderstorm Watch | SPC | Big Horn, Blaine, Carbon, Custer, Fergus, Garfield and 13 more | 6 hr |
Nearby
Severe Thunderstorm Watches in North Dakota, 1997Severe Thunderstorm Watches in Montana, 1997Severe Thunderstorm Watches in South Dakota, 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.