Alert archive / Nebraska / Mesoscale Discussions in 2007
Mesoscale Discussion 1647
The Storm Prediction Center issued this mesoscale discussion at Aug 4, 2007, 5:06 PM CDT for Cheyenne County, Rawlins County, Kansas; 18 counties in Nebraska. It was in force for 114 min.
The area
The outline as issued.
The facts
- Issued
- Aug 4, 2007, 5:06 PM CDT (22:06 UTC)
- Expired
- Aug 4, 2007, 7:00 PM CDT
- In force
- 114 min
- Issued by
- the Storm Prediction Center
Counties Cheyenne County, KS, Rawlins County, KS, Chase County, NE, Custer County, NE, Dawson County, NE, Dundy County, NE, Frontier County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hayes County, NE, Hitchcock County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, Perkins County, NE, Red Willow County, NE, Sherman County, NE, Valley County, NE, Wheeler County, NE
The radar
The North Platte radar (KLNX), 130 km from the middle of the area, began a volume at 22:10 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
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.1 hours before the alert went out and 40 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
- 41 J/kg
- Mixed-layer CIN
- -331 J/kg
- Mixed-layer LCL
- 1432 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 130 m²/s²
- 0-3 km storm-relative helicity
- 104 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 |
|---|---|---|---|---|
| Aug 3, 8:02 PM CDT | Mesoscale Discussion | SPC | Antelope, Blaine, Boyd, Brown, Cherry, Garfield and 8 more | 118 min |
| Aug 4, 1:49 AM CDT | Mesoscale Discussion | SPC | Burt, Cedar, Cuming, Dakota, Dixon, Knox and 2 more | 86 min |
| Aug 4, 2:51 PM CDT | Mesoscale Discussion | SPC | Antelope, Boone, Burt, Cedar, Cuming, Dakota and 13 more | 114 min |
| Aug 4, 3:55 PM CDT | Severe Thunderstorm Watch | SPC | Antelope, Boone, Burt, Butler, Cass, Cedar and 18 more | 6 hr |
| Aug 4, 5:46 PM CDT | Severe Thunderstorm Watch | SPC | Blaine, Buffalo, Custer, Dawson, Frontier, Garfield and 12 more | 4 hr |
| Aug 4, 6:09 PM CDT | Mesoscale Discussion | SPC | Burt, Cass, Cedar, Colfax, Cuming, Dakota and 13 more | 66 min |
Nearby
Mesoscale Discussions in Nebraska, 2007Mesoscale Discussions in Kansas, 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.