Alert archive / Kansas / Mesoscale Discussions in 2003

Mesoscale Discussion 733

May 4, 20034 states

The Storm Prediction Center issued this mesoscale discussion at May 4, 2003, 2:22 PM CDT for 4 states. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued
May 4, 2003, 2:22 PM CDT (19:22 UTC)
Expired
May 4, 2003, 4:15 PM CDT
In force
113 min
Issued by
the Storm Prediction Center
All 39 counties

Fremont County, IA, Mills County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Taylor County, IA, Anderson County, KS, Atchison County, KS, Brown County, KS, Coffey County, KS, Doniphan County, KS, Douglas County, KS, Franklin County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Lyon County, KS, Nemaha County, KS, Osage County, KS, Shawnee County, KS, Wabaunsee County, KS, Wilson County, KS, Woodson County, KS, Wyandotte County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Holt County, MO, Nodaway County, MO, Platte County, MO, Cass County, NE, Douglas County, NE, Lancaster County, NE, Nemaha County, NE, Otoe County, NE, Richardson County, NE, Sarpy County, NE, Saunders County, NE

The radar

The Topeka radar (KTWX), 126 km from the middle of the area, began a volume at 19:24 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

Topeka, KS (KTOP), launched 12:00Z, 7.4 hours before the alert went out and 122 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, Topeka, KS at 12:00Z on 2003-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 409 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, Topeka, KS at 12:00Z on 2003-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 582 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
409 J/kg
Mixed-layer CIN
-194 J/kg
Mixed-layer LCL
563 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
582 m²/s²
0-3 km storm-relative helicity
841 m²/s²
Significant tornado parameter
0.0
Supercell composite
17.5

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 3, 11:46 PM CDTMesoscale DiscussionSPCAdams, Cass, Fremont, Harrison, Mills, Monona and 5 more59 min
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, 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 Kansas, 2003Mesoscale Discussions in Nebraska, 2003Mesoscale Discussions in Iowa, 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.