Alert archive / Montana / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 600
The Storm Prediction Center issued this severe thunderstorm watch at Jul 10, 2004, 5:30 PM MDT for 10 counties in Montana; 9 counties in North Dakota. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 10, 2004, 5:30 PM MDT (23:30 UTC)
- Expired
- Jul 11, 2004, 12:00 AM MDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
Counties Custer County, MT, Dawson County, MT, Fallon County, MT, Garfield County, MT, McCone County, MT, Prairie County, MT, Richland County, MT, Rosebud County, MT, Treasure County, MT, Wibaux County, MT, Adams County, ND, Billings County, ND, Bowman County, ND, Dunn County, ND, Golden Valley County, ND, Hettinger County, ND, McKenzie County, ND, Slope County, ND, Stark County, ND
The radar
The Glasgow radar (KGGW), 146 km from the middle of the area, began a volume at 23:33 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
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 5:55 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Fallon | 65 min |
| Jul 10, 5:58 PM MDT | Severe Thunderstorm Warning | BYZ | Fallon | 62 min |
| Jul 10, 7:00 PM MDT | Flash Flood Warning | BYZ | Custer, Fallon | 2 hr |
| Jul 10, 7:05 PM MDT | Severe Thunderstorm Warning | BYZ | Fallon | 55 min |
| Jul 10, 7:22 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 53 min |
| Jul 10, 7:35 PM MDT | Severe Thunderstorm Warning | GGW | Wibaux | 55 min |
| Jul 10, 7:54 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 66 min |
| Jul 10, 8:26 PM MDT | Severe Thunderstorm Warning | BYZ | Fallon | 64 min |
| Jul 10, 9:32 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 58 min |
| Jul 10, 10:10 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 65 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 11.5 hours before the alert went out and 375 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
- 804 J/kg
- Mixed-layer CIN
- -244 J/kg
- Mixed-layer LCL
- 1142 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 1:34 PM MDT | Mesoscale Discussion | SPC | Beaverhead, Broadwater, Cascade, Chouteau, Deer Lodge, Gallatin and 20 more | 86 min |
| Jul 10, 2:10 PM MDT | Severe Thunderstorm Watch | SPC | Beaverhead, Broadwater, Cascade, Deer Lodge, Fergus, Gallatin and 8 more | 6 hr |
| Jul 10, 2:39 PM MDT | Mesoscale Discussion | SPC | Carter, Custer, Fallon | 2 hr |
| Jul 10, 2:56 PM MDT | Mesoscale Discussion | SPC | Carter, Custer, Fallon | 2 hr |
| Jul 10, 4:37 PM MDT | Mesoscale Discussion | SPC | Blaine, Cascade, Chouteau, Fergus, Garfield, Golden Valley and 8 more | 113 min |
| Jul 9, 6:29 PM MDT | Mesoscale Discussion | SPC | Adams, Billings, Bowman, Dunn, Grant, Hettinger and 9 more | 2 hr |
| Jul 10, 7:56 AM MDT | Mesoscale Discussion | SPC | Richland, Traill | 94 min |
| Jul 10, 1:19 PM MDT | Mesoscale Discussion | SPC | Barnes, Burleigh, Eddy, Emmons, Foster, Griggs and 8 more | 2 hr |
| Jul 10, 2:07 PM MDT | Mesoscale Discussion | SPC | Grand Forks, Nelson, Walsh | 113 min |
| Jul 10, 2:55 PM MDT | Tornado Watch | SPC | Barnes, Burleigh, Cass, Dickey, Eddy, Emmons and 20 more | 6 hr |
| Jul 10, 5:51 PM MDT | Mesoscale Discussion | SPC | Barnes, Emmons, Grant, Kidder, LaMoure, Logan and 2 more | 114 min |
Nearby
Severe Thunderstorm Watches in Montana, 2004Severe Thunderstorm Watches in North Dakota, 2004Every severe thunderstorm watch in 2004
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.