Alert archive / North Dakota / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 851
The Storm Prediction Center issued this severe thunderstorm watch at Aug 8, 2003, 3:40 PM MDT for 5 counties in Montana; 22 counties in North Dakota. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 8, 2003, 3:40 PM MDT (21:40 UTC)
- Expired
- Aug 8, 2003, 10:00 PM MDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 27 counties
Dawson County, MT, Richland County, MT, Roosevelt County, MT, Sheridan County, MT, Wibaux County, MT, Billings County, ND, Bottineau County, ND, Burke County, ND, Burleigh County, ND, Divide County, ND, Dunn County, ND, Golden Valley County, ND, McHenry County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Oliver County, ND, Pierce County, ND, Renville County, ND, Rolette County, ND, Sheridan County, ND, Slope County, ND, Stark County, ND, Ward County, ND, Williams County, ND
Warnings issued inside it
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 4:12 PM MDT | Severe Thunderstorm Warning | BIS | Renville | 63 min |
| Aug 8, 4:17 PM MDT | Severe Thunderstorm Warning | BIS | Burke, Ward | 28 min |
| Aug 8, 4:46 PM MDT | Severe Thunderstorm Warning | BIS | Ward | 44 min |
| Aug 8, 5:31 PM MDT | Severe Thunderstorm Warning | BIS | Mountrail, Ward | 59 min |
| Aug 8, 6:09 PM MDT | Severe Thunderstorm Warning | BIS | Burke | 51 min |
| Aug 8, 6:19 PM MDT | Severe Thunderstorm Warning | BIS | Bowman, Slope | 76 min |
| Aug 8, 6:41 PM MDT | Severe Thunderstorm Warning | BIS | Bottineau | 64 min |
| Aug 8, 7:30 PM MDT | Severe Thunderstorm Warning | BIS | Billings, Golden Valley | 60 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, 9.7 hours before the alert went out and 224 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
- 336 J/kg
- Mixed-layer CIN
- -383 J/kg
- Mixed-layer LCL
- 1081 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 191 m²/s²
- 0-3 km storm-relative helicity
- 217 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 9:11 PM MDT | Mesoscale Discussion | SPC | Blaine, Daniels, Dawson, Garfield, Hill, McCone and 7 more | 64 min |
| Aug 8, 1:48 PM MDT | Mesoscale Discussion | SPC | Dawson, Richland, Roosevelt, Sheridan, Wibaux | 117 min |
| Aug 8, 4:35 PM MDT | Severe Thunderstorm Watch | SPC | Fergus, Garfield, Golden Valley, McCone, Musselshell, Petroleum and 1 more | 5 hr |
Nearby
Severe Thunderstorm Watches in North Dakota, 2003Severe Thunderstorm Watches in Montana, 2003Every severe thunderstorm watch in 2003
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.