Alert archive / Missouri / Mesoscale Discussions in 2003

Mesoscale Discussion 845

May 8, 20034 states

The Storm Prediction Center issued this mesoscale discussion at May 8, 2003, 7:55 AM CDT for 4 states. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued
May 8, 2003, 7:55 AM CDT (12:55 UTC)
Expired
May 8, 2003, 9:30 AM CDT
In force
95 min
Issued by
the Storm Prediction Center
All 88 counties

Adams County, IA, Appanoose County, IA, Clarke County, IA, Davis County, IA, Decatur County, IA, Fremont County, IA, Mills County, IA, Montgomery County, IA, Page County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA, Wayne County, IA, Atchison County, KS, Brown County, KS, Doniphan County, KS, Jackson County, KS, Jefferson County, KS, Leavenworth County, KS, Marshall County, KS, Nemaha County, KS, Pottawatomie County, KS, Republic County, KS, Washington County, KS, Wyandotte County, KS, Adair County, MO, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Cooper County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Nodaway County, MO, Pettis County, MO, Platte County, MO, Putnam County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Sullivan County, MO, Worth County, MO, Adams County, NE, Butler County, NE, Cass County, NE, Clay County, NE, Douglas County, NE, Fillmore County, NE, Gage County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Howard County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Merrick County, NE, Nance County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Platte County, NE, Polk County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Thayer County, NE, Webster County, NE, York County, NE

The radar

The Pleasant Hill radar (KEAX), 138 km from the middle of the area, began a volume at 12:56 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

Topeka, KS (KTOP), launched 12:00Z, 0.9 hours before the alert went out and 110 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 2003-05-08Temperature 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, Topeka, KS at 12:00Z on 2003-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 427 square meters per square second.1939587897117Sfc1 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
836 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
427 m²/s²
0-3 km storm-relative helicity
517 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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 8, 3:51 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Cass, Clarke, Decatur and 13 more3 hr
May 8, 4:15 AM CDTSevere Thunderstorm WatchSPCAdams, Appanoose, Clarke, Davis, Decatur, Fremont and 7 more7 hr
May 8, 7:50 AM CDTMesoscale DiscussionSPCAdams, Appanoose, Clarke, Davis, Decatur, Fremont and 7 more85 min
May 8, 3:40 PM CDTTornado WatchSPCLee5 hr
May 8, 4:18 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Carroll, Cass, Crawford and 11 more57 min
May 8, 5:30 PM CDTSevere Thunderstorm WatchSPCAdair, Adams, Audubon, Carroll, Cass, Crawford and 13 more6 hr
May 7, 7:01 PM CDTMesoscale DiscussionSPCCheyenne, Greeley, Sherman, Wallace, Wichita89 min
May 8, 1:18 AM CDTMesoscale DiscussionSPCAllen, Barber, Barton, Bourbon, Butler, Chautauqua and 21 more3 hr
May 8, 1:55 AM CDTSevere Thunderstorm WatchSPCAllen, Anderson, Barber, Barton, Bourbon, Butler and 44 more5 hr
May 8, 12:49 PM CDTMesoscale DiscussionSPCHarper, Sumner3 hr
May 8, 1:07 PM CDTMesoscale DiscussionSPCBarton, Clay, Cloud, Dickinson, Ellis, Ellsworth and 16 more2 hr
May 8, 1:10 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Graham, Norton, Rawlins, Sheridan and 2 more2 hr
May 8, 1:30 PM CDTTornado WatchSPCCheyenne, Decatur, Gove, Graham, Logan, Norton and 6 more6 hr
May 8, 1:35 PM CDTTornado WatchSPCButler, Chautauqua, Cowley, Elk, Greenwood, Harper and 5 more7 hr
May 8, 1:50 PM CDTTornado WatchSPCAnderson, Atchison, Brown, Chase, Clay, Cloud and 31 more7 hr
May 8, 3:26 PM CDTMesoscale DiscussionSPCBrown, Clay, Cloud, Dickinson, Ellsworth, Geary and 22 more2 hr
May 8, 3:34 PM CDTMesoscale DiscussionSPCButler, Chase, Chautauqua, Coffey, Cowley, Elk and 10 more116 min
May 8, 3:35 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Gove, Graham, Logan, Norton and 6 more115 min
May 8, 4:16 PM CDTMesoscale DiscussionSPCAllen, Anderson, Atchison, Bourbon, Cherokee, Crawford and 11 more29 min
May 8, 4:40 PM CDTTornado WatchSPCAllen, Anderson, Atchison, Bourbon, Cherokee, Crawford and 13 more6 hr
May 8, 6:38 PM CDTMesoscale DiscussionSPCAllen, Anderson, Atchison, Bourbon, Brown, Butler and 46 more2 hr
May 8, 9:55 AM CDTMesoscale DiscussionSPCDunklin, Pemiscot3 hr
May 8, 10:25 AM CDTTornado WatchSPCButler, Carter, Dunklin, Mississippi, New Madrid, Pemiscot and 3 more6 hr
May 8, 12:20 PM CDTSevere Thunderstorm WatchSPCAudrain, Franklin, Iron, Jefferson, Lincoln, Macon and 14 more4 hr
May 8, 12:24 PM CDTMesoscale DiscussionSPCButler, Carter, Dunklin, Mississippi, New Madrid, Pemiscot and 3 more2 hr
May 8, 2:11 PM CDTMesoscale DiscussionSPCAudrain, Knox, Lewis, Lincoln, Macon, Marion and 10 more2 hr
May 8, 5:31 PM CDTMesoscale DiscussionSPCBarry, McDonald, Newton, Stone59 min
May 8, 5:45 PM CDTTornado WatchSPCBarry, Lawrence, McDonald, Newton5 hr

Nearby

Mesoscale Discussions in Missouri, 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.