Alert archive / Nebraska / Mesoscale Discussions in 2003

Mesoscale Discussion 2366

September 10, 20038 counties in Kansas; 39 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Sep 10, 2003, 3:57 PM CDT for 8 counties in Kansas; 39 counties in Nebraska. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued
Sep 10, 2003, 3:57 PM CDT (20:57 UTC)
Expired
Sep 10, 2003, 5:30 PM CDT
In force
93 min
Issued by
the Storm Prediction Center
All 47 counties

Graham County, KS, Jewell County, KS, Mitchell County, KS, Norton County, KS, Osborne County, KS, Phillips County, KS, Rooks County, KS, Smith County, KS, Adams County, NE, Antelope County, NE, Boone County, NE, Boyd County, NE, Buffalo County, NE, Cedar County, NE, Clay County, NE, Custer County, NE, Dawson County, NE, Fillmore County, NE, Franklin County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Holt County, NE, Howard County, NE, Kearney County, NE, Knox County, NE, Loup County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Rock County, NE, Sherman County, NE, Stanton County, NE, Valley County, NE, Wayne County, NE, Webster County, NE, Wheeler County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 89 km from the middle of the area, began a volume at 21:00 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, 9.0 hours before the alert went out and 155 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 2003-09-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 172 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 2003-09-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 square meters per square second.19395878Sfc1 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
172 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
928 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
40 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

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
Sep 9, 7:07 PM CDTMesoscale DiscussionSPCDecatur, Ellis, Gove, Graham, Lane, Logan and 12 more113 min
Sep 9, 9:44 PM CDTMesoscale DiscussionSPCCheyenne, Clark, Decatur, Edwards, Ellis, Finney and 34 more3 hr
Sep 10, 11:43 AM CDTMesoscale DiscussionSPCJewell, Norton, Osborne, Phillips, Republic, Rooks and 1 more2 hr
Sep 10, 1:55 PM CDTTornado WatchSPCGraham, Jewell, Mitchell, Norton, Osborne, Phillips and 3 more6 hr
Sep 10, 2:08 PM CDTMesoscale DiscussionSPCMeade, Seward3 hr
Sep 10, 2:55 PM CDTSevere Thunderstorm WatchSPCBarton, Clark, Comanche, Edwards, Ellis, Finney and 14 more5 hr
Sep 10, 2:57 PM CDTMesoscale DiscussionSPCCheyenne, Sherman2 hr
Sep 10, 6:42 PM CDTMesoscale DiscussionSPCBarton, Clark, Comanche, Edwards, Ellis, Ford and 13 more93 min
Sep 10, 6:53 PM CDTMesoscale DiscussionSPCJewell, Norton, Phillips, Smith67 min
Sep 9, 9:06 PM CDTMesoscale DiscussionSPCAdams, Antelope, Blaine, Boone, Boyd, Brown and 39 more114 min
Sep 9, 9:25 PM CDTSevere Thunderstorm WatchSPCAntelope, Boone, Boyd, Custer, Garfield, Greeley and 11 more5 hr
Sep 10, 1:31 AM CDTMesoscale DiscussionSPCArthur, Banner, Blaine, Box Butte, Brown, Cherry and 18 more2 hr

Nearby

Mesoscale Discussions in Nebraska, 2003Mesoscale Discussions in Kansas, 2003Every mesoscale discussion in 2003

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.