Alert archive / Nebraska / Mesoscale Discussions in 2014

Mesoscale Discussion 1530

August 9, 20145 counties in Colorado; 18 counties in Kansas; 30 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Aug 9, 2014, 1:46 PM MDT for 5 counties in Colorado; 18 counties in Kansas; 30 counties in Nebraska. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued
Aug 9, 2014, 1:46 PM MDT (19:46 UTC)
Expired
Aug 9, 2014, 3:45 PM MDT
In force
119 min
Issued by
the Storm Prediction Center
Chance of a watch
60%
All 53 counties

Cheyenne County, CO, Kiowa County, CO, Kit Carson County, CO, Lincoln County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Gove County, KS, Graham County, KS, Greeley County, KS, Lane County, KS, Logan County, KS, Norton County, KS, Phillips County, KS, Rawlins County, KS, Rooks County, KS, Scott County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Wichita County, KS, Adams County, NE, Blaine County, NE, Buffalo County, NE, Chase County, NE, Custer County, NE, Dawson County, NE, Dundy County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Hooker County, NE, Howard County, NE, Kearney County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Perkins County, NE, Phelps County, NE, Red Willow County, NE, Sherman County, NE, Thomas County, NE, Valley County, NE

The radar

The Goodland radar (KGLD), 130 km from the middle of the area, began a volume at 19:47 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, 7.8 hours before the alert went out and 89 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.

Skew-T log-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 12:00Z on 2014-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 996 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 2014-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 249 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
996 J/kg
Mixed-layer CIN
-182 J/kg
Mixed-layer LCL
721 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
249 m²/s²
0-3 km storm-relative helicity
314 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 9, 2:03 PM MDTSevere Thunderstorm WatchSPCCheyenne, Kit Carson, Yuma9 hr
Aug 9, 3:42 PM MDTMesoscale DiscussionSPCAdams, Arapahoe, Bent, Broomfield, Crowley, Denver and 6 more63 min
Aug 8, 10:48 PM MDTMesoscale DiscussionSPCJewell, Norton, Phillips, Republic, Smith87 min
Aug 9, 4:32 PM MDTMesoscale DiscussionSPCChase, Clay, Cloud, Dickinson, Ellsworth, Geary and 8 more88 min
Aug 9, 4:57 PM MDTMesoscale DiscussionSPCClark, Edwards, Finney, Ford, Grant, Gray and 16 more63 min
Aug 9, 5:40 PM MDTMesoscale DiscussionSPCCheyenne, Decatur, Graham, Jewell, Mitchell, Norton and 8 more95 min
Aug 9, 5:52 PM MDTSevere Thunderstorm WatchSPCBarton, Edwards, Ellis, Ellsworth, Finney, Ford and 22 more6 hr
Aug 8, 6:48 PM MDTSevere Thunderstorm WatchSPCArthur, Blaine, Buffalo, Chase, Custer, Dawson and 22 more5 hr
Aug 8, 8:26 PM MDTMesoscale DiscussionSPCAntelope, Boone, Buffalo, Custer, Dawson, Frontier and 16 more94 min
Aug 9, 4:08 PM MDTMesoscale DiscussionSPCBanner, Box Butte, Cheyenne, Dawes, Garden, Morrill and 3 more67 min

Nearby

Mesoscale Discussions in Nebraska, 2014Mesoscale Discussions in Kansas, 2014Mesoscale Discussions in Colorado, 2014Every mesoscale discussion in 2014

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.