Alert archive / North Dakota / Mesoscale Discussions in 2007
Mesoscale Discussion 1431
The Storm Prediction Center issued this mesoscale discussion at Jul 9, 2007, 12:31 PM MDT for 11 counties in Montana; 15 counties in North Dakota; Harding County, South Dakota. It was in force for 89 min.
The area
The outline as issued.
The facts
- Issued
- Jul 9, 2007, 12:31 PM MDT (18:31 UTC)
- Expired
- Jul 9, 2007, 2:00 PM MDT
- In force
- 89 min
- Issued by
- the Storm Prediction Center
All 27 counties
Carter County, MT, Custer County, MT, Daniels County, MT, Dawson County, MT, Fallon County, MT, McCone County, MT, Prairie 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, Mercer County, ND, Mountrail County, ND, Slope County, ND, Stark County, ND, Williams County, ND, Harding County, SD
The radar
The Glasgow radar (KGGW), 209 km from the middle of the area, began a volume at 18:34 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.
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 12:00Z, 6.5 hours before the alert went out and 267 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1063 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 103 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 9, 1:01 PM MDT | Severe Thunderstorm Watch | SPC | Carter, Custer, Daniels, Dawson, Fallon, McCone and 6 more | 7 hr |
| Jul 9, 3:40 PM MDT | Mesoscale Discussion | SPC | Carter, Fallon, Wibaux | 95 min |
| Jul 9, 4:15 PM MDT | Severe Thunderstorm Watch | SPC | Benson, Bottineau, Burleigh, Cavalier, Dickey, Eddy and 22 more | 8 hr |
Nearby
Mesoscale Discussions in North Dakota, 2007Mesoscale Discussions in Montana, 2007Mesoscale Discussions in South Dakota, 2007Every mesoscale discussion in 2007
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.