Alert archive / North Dakota / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 609
The Storm Prediction Center issued this severe thunderstorm watch at Jul 11, 2004, 11:50 PM CDT for 23 counties in North Dakota; Campbell County, McPherson County, South Dakota. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 11, 2004, 11:50 PM CDT (04:50 UTC)
- Expired
- Jul 12, 2004, 6:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 25 counties
Barnes County, ND, Benson County, ND, Burleigh County, ND, Cavalier County, ND, Dickey County, ND, Eddy County, ND, Emmons County, ND, Foster County, ND, Griggs County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Nelson County, ND, Pembina County, ND, Pierce County, ND, Ramsey County, ND, Rolette County, ND, Sheridan County, ND, Stutsman County, ND, Towner County, ND, Walsh County, ND, Wells County, ND, Campbell County, SD, McPherson County, SD
The radar
The Bismarck radar (KBIS), 95 km from the middle of the area, began a volume at 04:51 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 12, 1:05 AM CDT | Severe Thunderstorm Warning | BIS | Burleigh | 55 min |
| Jul 12, 1:06 AM CDT | Severe Thunderstorm Warning | BIS | Pierce | 54 min |
| Jul 12, 1:11 AM CDT | Severe Thunderstorm Warning | FGF | Benson | 64 min |
| Jul 12, 1:39 AM CDT | Severe Thunderstorm Warning | BIS | Rolette | 51 min |
| Jul 12, 1:49 AM CDT | Severe Thunderstorm Warning | FGF | Eddy, Ramsey, Towner | 56 min |
| Jul 12, 2:53 AM CDT | Severe Thunderstorm Warning | BIS | Stutsman | 52 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 00:00Z, 4.8 hours before the alert went out and 91 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
- 2240 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 1838 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 7:20 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Billings, Bottineau, Bowman, Burke, Divide and 16 more | 8 hr |
| Jul 11, 9:19 PM CDT | Mesoscale Discussion | SPC | Adams, Billings, Burke, Divide, Dunn, Golden Valley and 12 more | 116 min |
| Jul 11, 9:40 PM CDT | Severe Thunderstorm Watch | SPC | Golden Valley | 5 hr |
| Jul 11, 11:34 PM CDT | Mesoscale Discussion | SPC | Adams, Benson, Billings, Bottineau, Burke, Burleigh and 30 more | 116 min |
| Jul 12, 1:29 AM CDT | Mesoscale Discussion | SPC | Barnes, Benson, Bottineau, Burleigh, Cass, Cavalier and 28 more | 91 min |
| Jul 12, 1:55 AM CDT | Severe Thunderstorm Watch | SPC | Cass, Grand Forks, Ransom, Richland, Sargent, Steele and 1 more | 5 hr |
| Jul 12, 3:13 AM CDT | Mesoscale Discussion | SPC | Barnes, Cass, Dickey, Emmons, Foster, Grand Forks and 14 more | 92 min |
| Jul 12, 4:53 AM CDT | Mesoscale Discussion | SPC | Cass, Richland, Traill | 67 min |
| Jul 12, 8:53 AM CDT | Mesoscale Discussion | SPC | Dickey, McIntosh, Sargent | 2 hr |
| Jul 11, 9:54 PM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brule, Buffalo, Charles Mix, Davison and 12 more | 3 hr |
| Jul 12, 10:55 AM CDT | Severe Thunderstorm Watch | SPC | Beadle, Brookings, Clark, Codington, Day, Deuel and 4 more | 5 hr |
| Jul 12, 2:04 PM CDT | Mesoscale Discussion | SPC | Aurora, Bon Homme, Brule, Buffalo, Charles Mix, Davison and 12 more | 116 min |
| Jul 12, 3:25 PM CDT | Tornado Watch | SPC | Aurora, Bon Homme, Brule, Charles Mix, Clay, Davison and 10 more | 6 hr |
| Jul 12, 6:20 PM CDT | Tornado Watch | SPC | Bon Homme, Clay, Hanson, Hutchinson, Lincoln, McCook and 4 more | 7 hr |
Nearby
Severe Thunderstorm Watches in North Dakota, 2004Severe Thunderstorm Watches in South 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.