Alert archive / Nebraska / Mesoscale Discussions in 2003

Mesoscale Discussion 1489

June 24, 200328 counties in Nebraska; 8 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 24, 2003, 1:29 PM CDT for 28 counties in Nebraska; 8 counties in South Dakota. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Jun 24, 2003, 1:29 PM CDT (18:29 UTC)
Expired
Jun 24, 2003, 4:00 PM CDT
In force
3 hr
Issued by
the Storm Prediction Center
All 36 counties

Antelope County, NE, Blaine County, NE, Boone County, NE, Boyd County, NE, Brown County, NE, Buffalo County, NE, Cedar County, NE, Custer County, NE, Dixon County, NE, Garfield County, NE, Greeley County, NE, Holt County, NE, Hooker County, NE, Howard County, NE, Keya Paha County, NE, Knox County, NE, Logan County, NE, Loup County, NE, Madison County, NE, McPherson County, NE, Pierce County, NE, Rock County, NE, Sherman County, NE, Stanton County, NE, Thomas County, NE, Valley County, NE, Wayne County, NE, Wheeler County, NE, Bon Homme County, SD, Charles Mix County, SD, Clay County, SD, Douglas County, SD, Gregory County, SD, Hutchinson County, SD, Turner County, SD, Yankton County, SD

The radar

The North Platte radar (KLNX), 96 km from the middle of the area, began a volume at 18:28 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, 6.5 hours before the alert went out and 139 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 2003-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 413 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 2003-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 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
413 J/kg
Mixed-layer CIN
-377 J/kg
Mixed-layer LCL
1537 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
51 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 23, 8:17 PM CDTMesoscale DiscussionSPCAdams, Antelope, Boone, Buffalo, Butler, Clay and 37 more58 min
Jun 23, 8:20 PM CDTTornado WatchSPCAdams, Buffalo, Clay, Fillmore, Franklin, Furnas and 11 more3 hr
Jun 23, 8:34 PM CDTMesoscale DiscussionSPCCheyenne, Deuel, Kimball86 min
Jun 23, 8:55 PM CDTTornado WatchSPCBurt, Cass, Douglas, Gage, Jefferson, Johnson and 11 more4 hr
Jun 23, 9:10 PM CDTMesoscale DiscussionSPCBoyd65 min
Jun 23, 9:10 PM CDTTornado WatchSPCBanner, Box Butte, Cheyenne, Deuel, Garden, Kimball and 3 more4 hr
Jun 23, 10:38 PM CDTMesoscale DiscussionSPCCedar, Dakota, Dixon, Pierce, Wayne67 min
Jun 23, 10:50 PM CDTTornado WatchSPCAdams, Antelope, Boone, Buffalo, Butler, Cedar and 26 more5 hr
Jun 23, 10:50 PM CDTTornado WatchSPCArthur, Blaine, Chase, Custer, Dawson, Frontier and 10 more5 hr
Jun 23, 11:08 PM CDTMesoscale DiscussionSPCBanner, Box Butte, Cheyenne, Garden, Grant, Kimball and 3 more67 min
Jun 23, 11:45 PM CDTSevere Thunderstorm WatchSPCBoyd, Brown, Cherry, Grant, Holt, Hooker and 3 more6 hr
Jun 24, 12:50 AM CDTSevere Thunderstorm WatchSPCBanner, Cheyenne, Deuel, Garden, Kimball, Morrill and 1 more3 hr
Jun 24, 1:52 AM CDTMesoscale DiscussionSPCAntelope, Blaine, Cedar, Dakota, Dixon, Garfield and 9 more53 min
Jun 24, 2:44 AM CDTMesoscale DiscussionSPCBoyd, Brown, Cherry, Grant, Holt, Hooker and 3 more2 hr
Jun 24, 11:43 AM CDTMesoscale DiscussionSPCCass, Douglas, Johnson, Nemaha, Otoe, Richardson and 2 more2 hr
Jun 24, 2:15 PM CDTTornado WatchSPCAntelope, Blaine, Boyd, Brown, Cedar, Cherry and 18 more8 hr
Jun 24, 3:47 PM CDTMesoscale DiscussionSPCChase, Dundy, Hayes, Hitchcock88 min
Jun 24, 3:55 PM CDTSevere Thunderstorm WatchSPCChase, Dawson, Dundy, Frontier, Furnas, Gosper and 3 more6 hr
Jun 24, 3:56 PM CDTMesoscale DiscussionSPCNemaha, Richardson64 min
Jun 24, 5:59 PM CDTMesoscale DiscussionSPCAntelope, Blaine, Boyd, Brown, Cedar, Dixon and 11 more61 min
Jun 24, 6:30 PM CDTMesoscale DiscussionSPCBuffalo, Dawson, Dundy, Frontier, Furnas, Gosper and 7 more2 hr
Jun 24, 1:21 AM CDTMesoscale DiscussionSPCBeadle, Brookings, Buffalo, Clark, Codington, Day and 11 more114 min
Jun 24, 4:20 PM CDTSevere Thunderstorm WatchSPCDeuel, Grant, Roberts6 hr
Jun 24, 6:28 PM CDTMesoscale DiscussionSPCBeadle, Brown, Buffalo, Campbell, Clark, Day and 18 more92 min

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.