Alert archive / Nebraska / Mesoscale Discussions in 2003

Mesoscale Discussion 1330

June 11, 200313 counties in Nebraska; 10 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 11, 2003, 3:58 PM MDT for 13 counties in Nebraska; 10 counties in South Dakota. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued
Jun 11, 2003, 3:58 PM MDT (21:58 UTC)
Expired
Jun 11, 2003, 5:30 PM MDT
In force
92 min
Issued by
the Storm Prediction Center
All 23 counties

Arthur County, NE, Blaine County, NE, Brown County, NE, Cherry County, NE, Custer County, NE, Grant County, NE, Hooker County, NE, Keith County, NE, Keya Paha County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Thomas County, NE, Bennett County, SD, Haakon County, SD, Hughes County, SD, Jackson County, SD, Jones County, SD, Lyman County, SD, Mellette County, SD, Stanley County, SD, Todd County, SD, Tripp County, SD

The radar

The North Platte radar (KLNX), 111 km from the middle of the area, began a volume at 22:01 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, 10.0 hours before the alert went out and 201 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 2003-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2003-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1178 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Jun 11, 1:06 PM MDTMesoscale DiscussionSPCArthur, Banner, Blaine, Box Butte, Chase, Cherry and 20 more114 min
Jun 11, 1:40 PM MDTTornado WatchSPCArthur, Blaine, Brown, Cherry, Custer, Grant and 8 more6 hr
Jun 11, 4:33 PM MDTMesoscale DiscussionSPCChase, Dundy, Frontier, Furnas, Gosper, Hayes and 3 more87 min
Jun 11, 4:50 PM MDTSevere Thunderstorm WatchSPCChase, Dundy, Frontier, Furnas, Hayes, Hitchcock and 3 more5 hr
Jun 11, 5:04 PM MDTMesoscale DiscussionSPCAntelope, Boone, Boyd, Garfield, Greeley, Holt and 12 more86 min
Jun 11, 5:45 PM MDTTornado WatchSPCAntelope, Boyd, Cedar, Garfield, Holt, Knox and 5 more4 hr

Nearby

Mesoscale Discussions in Nebraska, 2003Mesoscale Discussions in South Dakota, 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.