Alert archive / Nebraska / Mesoscale Discussions in 2004

Mesoscale Discussion 978

May 29, 20045 counties in Kansas; 26 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 29, 2004, 5:16 PM CDT for 5 counties in Kansas; 26 counties in Nebraska. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued
May 29, 2004, 5:16 PM CDT (22:16 UTC)
Expired
May 29, 2004, 6:15 PM CDT
In force
59 min
Issued by
the Storm Prediction Center
All 31 counties

Cloud County, KS, Jewell County, KS, Mitchell County, KS, Republic County, KS, Washington County, KS, Adams County, NE, Boone County, NE, Buffalo County, NE, Clay County, NE, Custer County, NE, Dawson County, NE, Fillmore County, NE, Franklin County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Howard County, NE, Jefferson County, NE, Kearney County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Polk County, NE, Saline County, NE, Seward County, NE, Sherman County, NE, Thayer County, NE, Valley County, NE, Webster County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 11 km from the middle of the area, began a volume at 22:18 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

Omaha, NE (KOAX), launched 12:00Z, 10.3 hours before the alert went out and 196 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, Omaha, NE at 12:00Z on 2004-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1045 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, Omaha, NE at 12:00Z on 2004-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 235 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
1045 J/kg
Mixed-layer CIN
-319 J/kg
Mixed-layer LCL
1057 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
235 m²/s²
0-3 km storm-relative helicity
190 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
May 29, 1:02 PM CDTMesoscale DiscussionSPCClay, Cloud, Dickinson, Ellsworth, Graham, Jewell and 14 more118 min
May 29, 1:54 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Greeley, Logan, Rawlins, Sherman and 2 more3 hr
May 29, 2:55 PM CDTTornado WatchSPCBarber, Barton, Butler, Chase, Clark, Comanche and 20 more7 hr
May 29, 3:05 PM CDTTornado WatchSPCBrown, Clay, Cloud, Dickinson, Ellis, Ellsworth and 24 more7 hr
May 29, 3:55 PM CDTSevere Thunderstorm WatchSPCCheyenne, Decatur, Gove, Greeley, Lane, Logan and 8 more6 hr
May 29, 4:35 PM CDTTornado WatchSPCAnderson, Atchison, Doniphan, Douglas, Franklin, Jefferson and 5 more5 hr
May 29, 4:57 PM CDTMesoscale DiscussionSPCBarber, Harper, Harvey, Kingman, Pratt, Reno and 3 more63 min
May 29, 5:53 PM CDTMesoscale DiscussionSPCDecatur, Logan, Rawlins, Sheridan, Sherman, Thomas and 1 more67 min
May 28, 7:31 PM CDTMesoscale DiscussionSPCAntelope, Boone, Boyd, Burt, Cedar, Colfax and 20 more89 min
May 28, 9:03 PM CDTMesoscale DiscussionSPCAntelope, Boyd, Burt, Cedar, Colfax, Cuming and 12 more57 min
May 28, 9:50 PM CDTSevere Thunderstorm WatchSPCDakota5 hr
May 29, 12:42 PM CDTMesoscale DiscussionSPCCedar, Dakota, Dixon, Thurston93 min
May 29, 2:05 PM CDTTornado WatchSPCBoyd, Cedar, Dakota, Dixon, Holt, Knox and 2 more8 hr
May 29, 5:01 PM CDTMesoscale DiscussionSPCAntelope, Boyd, Cedar, Dakota, Dixon, Holt and 3 more119 min

Nearby

Mesoscale Discussions in Nebraska, 2004Mesoscale Discussions in Kansas, 2004Every mesoscale discussion in 2004

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.