Alert archive / Nebraska / Mesoscale Discussions in 2003

Mesoscale Discussion 722

May 3, 20034 states

The Storm Prediction Center issued this mesoscale discussion at May 3, 2003, 11:46 PM CDT for 4 states. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued
May 3, 2003, 11:46 PM CDT (04:46 UTC)
Expired
May 4, 2003, 12:45 AM CDT
In force
59 min
Issued by
the Storm Prediction Center
All 157 counties

Adams County, IA, Cass County, IA, Fremont County, IA, Harrison County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Ringgold County, IA, Taylor County, IA, Allen County, KS, Anderson County, KS, Atchison County, KS, Bourbon County, KS, Brown County, KS, Clay County, KS, Cloud County, KS, Coffey County, KS, Crawford County, KS, Doniphan County, KS, Douglas County, KS, Franklin County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Jewell County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Marshall County, KS, Miami County, KS, Morris County, KS, Nemaha County, KS, Neosho County, KS, Osage County, KS, Phillips County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Shawnee County, KS, Smith County, KS, Wabaunsee County, KS, Washington County, KS, Woodson County, KS, Wyandotte County, KS, Andrew County, MO, Atchison County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Cedar County, MO, Clay County, MO, Clinton County, MO, Dade County, MO, Dallas County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Henry County, MO, Hickory County, MO, Holt County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Livingston County, MO, Mercer County, MO, Nodaway County, MO, Pettis County, MO, Platte County, MO, Polk County, MO, Ray County, MO, Saline County, MO, St. Clair County, MO, Vernon County, MO, Worth County, MO, Adams County, NE, Antelope County, NE, Arthur County, NE, Blaine County, NE, Boone County, NE, Brown County, NE, Buffalo County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Chase County, NE, Cherry County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Custer County, NE, Dawson County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Gage County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Holt County, NE, Hooker County, NE, Howard County, NE, Jefferson County, NE, Johnson County, NE, Kearney County, NE, Keith County, NE, Lancaster County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, Madison County, NE, McPherson County, NE, Merrick County, NE, Nance County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Perkins County, NE, Phelps County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Red Willow County, NE, Richardson County, NE, Rock County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Sherman County, NE, Stanton County, NE, Thayer County, NE, Thomas County, NE, Thurston County, NE, Valley County, NE, Washington County, NE, Wayne County, NE, Webster County, NE, Wheeler County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 42 km from the middle of the area, began a volume at 04:45 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

Omaha, NE (KOAX), launched 00:00Z, 4.8 hours before the alert went out and 189 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 00:00Z on 2003-05-04Temperature 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, Omaha, NE at 00:00Z on 2003-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 square meters per square second.1939587897Sfc1 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
1759 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
179 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

797 
ACUS11 KWNS 040446
SWOMCD
SPC MCD 040446 
MOZ000-IAZ000-KSZ000-NEZ000-040545-

MESOSCALE DISCUSSION 0722
NWS STORM PREDICTION CENTER NORMAN OK
1146 PM CDT SAT MAY 03 2003

AREAS AFFECTED...CENTRAL-ERN NEB/NRN-ERN KS/SWRN IA/WRN MO

CONCERNING...SEVERE THUNDERSTORM WATCH 228...

VALID 040446Z - 040545Z

THREAT FOR SEVERE STORMS WILL CONTINUE OVER CENTRAL NEB...WITH A NEW
WW POSSIBLE EWD OVER PORTIONS OF ERN NEB/KS INTO SWRN IA/WRN MO AS
ADDITIONAL ELEVATED STORMS DEVELOP OVER THE NEXT FEW HOURS.

REGIONAL RADARS SHOW A LINE OF STRONG TO SEVERE STORMS OVER THE WRN
PORTION OF WW 228 FROM HOOKER COUNTY NEB TO KEITH COUNTY NEB.  THESE
STORMS WILL MOVE EWD INTO CENTRAL NEB OVER THE NEXT SEVERAL HOURS AS
A STRONG SLY LLJ CONTINUES DESTABILIZATION ABOVE THE SURFACE.  35-50
KT OF DEEP LAYER SHEAR WILL SUPPORT ORGANIZED STORMS WITH LARGE HAIL
BEING THE PRIMARY THREAT GIVEN THE ELEVATED NATURE OF THESE STORMS.

ADDITIONAL ELEVATED STORMS ARE DEVELOPING OVER ERN KS INTO MO IN A
LOW-LEVEL WAA REGIME IN ASSOCIATION WITH THE STRENGTHENING SLY LLJ
OVER THE SRN/CENTRAL PLAINS. IF THERE IS AN INCREASED TREND FOR
SUSTAINED UPDRAFTS...THEN A NEW WW WOULD BE NEEDED FOR ERN NEB INTO
PORTIONS OF NRN/ERN KS AND SWRN IA/WRN MO.  

..PETERS.. 05/04/2003

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...SGF...DMX...EAX...FSD...OAX...TOP...ICT...GID...LBF...GLD...

40200176 41410196 42880113 42359637 40369340 37469291
37219522 39319744

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 4, 12:10 AM CDTSevere Thunderstorm WatchSPCAdair, Adams, Audubon, Boone, Carroll, Cass and 18 more6 hr
May 4, 2:58 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Boone, Carroll and 37 more92 min
May 4, 4:50 AM CDTSevere Thunderstorm WatchSPCAdair, Adams, Appanoose, Cass, Clarke, Davis and 23 more6 hr
May 4, 7:43 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Cass, Clarke, Davis and 15 more2 hr
May 4, 9:48 AM CDTMesoscale DiscussionSPCAudubon, Buena Vista, Carroll, Cass, Cherokee, Clay and 17 more117 min
May 4, 12:14 PM CDTMesoscale DiscussionSPCFremont, Mills, Montgomery, Page, Pottawattamie, Taylor2 hr
May 4, 12:45 PM CDTTornado WatchSPCAdams, Cass, Fremont, Mills, Montgomery, Page and 2 more6 hr
May 4, 2:22 PM CDTMesoscale DiscussionSPCFremont, Mills, Montgomery, Page, Pottawattamie, Taylor113 min
May 4, 3:56 PM CDTMesoscale DiscussionSPCAdair, Appanoose, Audubon, Boone, Carroll, Cass and 22 more2 hr
May 4, 5:25 PM CDTSevere Thunderstorm WatchSPCAppanoose, Davis, Des Moines, Lee, Van Buren6 hr
May 4, 5:50 PM CDTSevere Thunderstorm WatchSPCAdair, Adams, Appanoose, Clarke, Dallas, Decatur and 14 more5 hr
May 3, 11:07 PM CDTMesoscale DiscussionSPCBarber, Barton, Butler, Chase, Clark, Clay and 43 more83 min
May 4, 10:19 AM CDTMesoscale DiscussionSPCAtchison, Butler, Chase, Clay, Coffey, Dickinson and 19 more116 min
May 4, 11:40 AM CDTTornado WatchSPCAnderson, Chase, Clay, Cloud, Coffey, Dickinson and 19 more6 hr
May 4, 11:44 AM CDTMesoscale DiscussionSPCChautauqua, Cherokee, Crawford, Labette, Montgomery, Neosho and 1 more3 hr
May 4, 12:35 PM CDTTornado WatchSPCAllen, Bourbon, Chautauqua, Cherokee, Crawford, Elk and 6 more6 hr
May 4, 2:58 PM CDTMesoscale DiscussionSPCEllis, Gove, Jewell, Lane, Lincoln, Mitchell and 9 more92 min
May 4, 3:05 PM CDTMesoscale DiscussionSPCAllen, Bourbon, Cherokee, Crawford, Labette, Montgomery and 1 more115 min
May 4, 4:28 PM CDTMesoscale DiscussionSPCWyandotte62 min
May 4, 4:43 PM CDTMesoscale DiscussionSPCBourbon, Cherokee, Crawford, Labette, Linn, Neosho2 hr
May 4, 6:05 PM CDTTornado WatchSPCBourbon, Cherokee, Crawford7 hr
May 4, 6:20 PM CDTTornado WatchSPCDoniphan, Wyandotte6 hr
May 4, 5:01 PM CDTMesoscale DiscussionSPCButler, Dunklin, Mississippi, New Madrid, Pemiscot, Stoddard3 hr
May 4, 5:20 PM CDTMesoscale DiscussionSPCBarry, Barton, Cedar, Christian, Dade, Dallas and 18 more55 min
May 4, 6:55 PM CDTTornado WatchSPCButler, Dunklin, Mississippi, New Madrid, Pemiscot, Scott and 2 more6 hr
May 3, 8:33 PM CDTMesoscale DiscussionSPCArthur, Box Butte, Chase, Cherry, Cheyenne, Deuel and 10 more57 min
May 3, 9:42 PM CDTMesoscale DiscussionSPCAdams, Arthur, Blaine, Brown, Buffalo, Chase and 33 more33 min
May 3, 10:20 PM CDTSevere Thunderstorm WatchSPCAdams, Antelope, Arthur, Blaine, Boone, Boyd and 41 more6 hr
May 4, 1:55 PM CDTMesoscale DiscussionSPCClay, Fillmore, Gage, Hamilton, Lancaster, Saline and 2 more2 hr

Nearby

Mesoscale Discussions in Nebraska, 2003Mesoscale Discussions in Kansas, 2003Mesoscale Discussions in Missouri, 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.