Alert archive / Nebraska / Mesoscale Discussions in 2013
Mesoscale Discussion 664
The Storm Prediction Center issued this mesoscale discussion at May 16, 2013, 6:30 PM CDT for 8 counties in Kansas; 25 counties in Nebraska. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- May 16, 2013, 6:30 PM CDT (23:30 UTC)
- Expired
- May 16, 2013, 8:00 PM CDT
- In force
- 90 min
- Issued by
- the Storm Prediction Center
All 33 counties
Decatur County, KS, Gove County, KS, Graham County, KS, Norton County, KS, Phillips County, KS, Sheridan County, KS, Smith County, KS, Thomas County, KS, Adams County, NE, Antelope County, NE, Boone County, NE, Buffalo County, NE, Clay County, NE, Colfax County, NE, Franklin County, NE, Furnas County, NE, Garfield County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Howard County, NE, Kearney County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Phelps County, NE, Platte County, NE, Polk County, NE, Sherman County, NE, Valley County, NE, Webster County, NE, Wheeler County, NE
The radar
The Grand Island radar (KUEX), 81 km from the middle of the area, began a volume at 23:34 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 nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.5 hours before the alert went out and 122 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
- 31 J/kg
- Mixed-layer CIN
- -294 J/kg
- Mixed-layer LCL
- 1883 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 72 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 |
|---|---|---|---|---|
| May 16, 12:59 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Rawlins | 2 hr |
| May 16, 1:51 PM CDT | Severe Thunderstorm Watch | SPC | Cheyenne, Decatur, Graham, Norton, Phillips, Rawlins and 4 more | 6 hr |
| May 16, 3:35 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Decatur, Graham, Norton, Rawlins, Sheridan and 2 more | 85 min |
| May 16, 3:48 PM CDT | Mesoscale Discussion | SPC | Grant, Greeley, Hamilton, Kearny, Morton, Stanton and 1 more | 87 min |
| May 16, 1:25 PM CDT | Mesoscale Discussion | SPC | Antelope, Boone, Cedar, Colfax, Cuming, Dixon and 9 more | 95 min |
| May 16, 3:12 PM CDT | Mesoscale Discussion | SPC | Banner, Box Butte, Cheyenne, Dawes, Kimball, Morrill and 2 more | 93 min |
Nearby
Mesoscale Discussions in Nebraska, 2013Mesoscale Discussions in Kansas, 2013Every mesoscale discussion in 2013
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.