Alert archive / North Dakota / Mesoscale Discussions in 2004
Mesoscale Discussion 1678
The Storm Prediction Center issued this mesoscale discussion at Jul 14, 2004, 8:39 PM MDT for 5 counties in Montana; 21 counties in North Dakota. It was in force for 96 min.
The area
The outline as issued.
The facts
- Issued
- Jul 14, 2004, 8:39 PM MDT (02:39 UTC)
- Expired
- Jul 14, 2004, 10:15 PM MDT
- In force
- 96 min
- Issued by
- the Storm Prediction Center
All 26 counties
Daniels 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, Grant County, ND, Hettinger County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Oliver County, ND, Renville County, ND, Sioux County, ND, Slope County, ND, Stark County, ND, Ward County, ND, Williams County, ND
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 2.7 hours before the alert went out and 227 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
- 577 J/kg
- Mixed-layer CIN
- -148 J/kg
- Mixed-layer LCL
- 2040 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 120 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.7
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 6:49 PM MDT | Mesoscale Discussion | SPC | Carter, Powder River | 86 min |
| Jul 14, 9:07 PM MDT | Mesoscale Discussion | SPC | Carter, Powder River | 53 min |
| Jul 14, 10:25 PM MDT | Severe Thunderstorm Watch | SPC | Adams, Benson, Billings, Bottineau, Burke, Burleigh and 30 more | 6 hr |
| Jul 15, 1:37 AM MDT | Mesoscale Discussion | SPC | Burleigh, Emmons, Grant, Kidder, Morton, Sheridan and 2 more | 53 min |
| Jul 15, 11:28 AM MDT | Mesoscale Discussion | SPC | Pembina | 2 hr |
| Jul 15, 4:41 PM MDT | Mesoscale Discussion | SPC | Sargent | 94 min |
| Jul 15, 5:00 PM MDT | Severe Thunderstorm Watch | SPC | Barnes, Cass, Ransom, Richland, Sargent | 5 hr |
Nearby
Mesoscale Discussions in North Dakota, 2004Mesoscale Discussions in Montana, 2004Every mesoscale discussion 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.