Alert archive / North Dakota / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 680
The Storm Prediction Center issued this severe thunderstorm watch at Aug 1, 2004, 4:00 PM MDT for 28 counties in North Dakota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 1, 2004, 4:00 PM MDT (22:00 UTC)
- Expired
- Aug 1, 2004, 9:00 PM MDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 28 counties
Adams County, ND, Benson County, ND, Bottineau County, ND, Burleigh County, ND, Cavalier County, ND, Eddy County, ND, Emmons County, ND, Foster County, ND, Grant County, ND, Griggs County, ND, Kidder County, ND, Logan County, ND, McHenry County, ND, McIntosh County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Nelson County, ND, Oliver County, ND, Pierce County, ND, Ramsey County, ND, Rolette County, ND, Sheridan County, ND, Sioux County, ND, Stutsman County, ND, Towner County, ND, Ward County, ND, Wells County, ND
The radar
The Bismarck radar (KBIS), 47 km from the middle of the area, began a volume at 22:02 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
5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 4:56 PM MDT | Severe Thunderstorm Warning | BIS | Adams | 64 min |
| Aug 1, 5:23 PM MDT | Severe Thunderstorm Warning | BIS | Grant, Sioux | 67 min |
| Aug 1, 5:35 PM MDT | Severe Thunderstorm Warning | BIS | Grant, Morton | 55 min |
| Aug 1, 6:29 PM MDT | Severe Thunderstorm Warning | BIS | Morton | 61 min |
| Aug 1, 8:26 PM MDT | Severe Thunderstorm Warning | BIS | Bottineau, McHenry | 64 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, 10.0 hours before the alert went out and 47 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
- 96 J/kg
- Mixed-layer CIN
- -236 J/kg
- Mixed-layer LCL
- 1468 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 2:43 AM MDT | Mesoscale Discussion | SPC | Golden Valley | 92 min |
| Aug 1, 2:15 PM MDT | Tornado Watch | SPC | Sargent | 7 hr |
| Aug 1, 3:39 PM MDT | Mesoscale Discussion | SPC | Adams, Benson, Burleigh, Dunn, Emmons, Grant and 13 more | 66 min |
Nearby
Severe 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.