Alert archive / Missouri / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 780

August 24, 200420 counties in Kansas; 32 counties in Missouri; 7 counties in Nebraska

The Storm Prediction Center issued this severe thunderstorm watch at Aug 24, 2004, 8:20 PM CDT for 20 counties in Kansas; 32 counties in Missouri; 7 counties in Nebraska. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Aug 24, 2004, 8:20 PM CDT (01:20 UTC)
Expired
Aug 25, 2004, 3:00 AM CDT
In force
7 hr
Issued by
the Storm Prediction Center
All 59 counties

Atchison County, KS, Brown County, KS, Clay County, KS, Dickinson County, KS, Doniphan County, KS, Douglas County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Marshall County, KS, Morris County, KS, Nemaha County, KS, Pottawatomie County, KS, Riley County, KS, Shawnee County, KS, Wabaunsee 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, Sullivan County, MO, Worth County, MO, Gage County, NE, Jefferson County, NE, Johnson County, NE, Nemaha County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE

The radar

The Topeka radar (KTWX), 116 km from the middle of the area, began a volume at 01:21 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.

Warnings issued inside it

5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Aug 24, 9:37 PM CDTSevere Thunderstorm WarningTOPPottawatomie, Riley38 min
Aug 24, 10:07 PM CDTTornado WarningTOPPottawatomie, Riley38 min
Aug 24, 10:38 PM CDTSevere Thunderstorm WarningTOPNemaha37 min
Aug 24, 11:14 PM CDTSevere Thunderstorm WarningTOPNemaha46 min
Aug 25, 1:30 AM CDTFlash Flood WarningEAXGentry, Harrison6 hr

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 1.3 hours before the alert went out and 93 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 00:00Z on 2004-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3663 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 00:00Z on 2004-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 109 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
3663 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
862 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
109 m²/s²
0-3 km storm-relative helicity
158 m²/s²
Significant tornado parameter
1.6
Supercell composite
7.5

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 24, 11:47 PM CDTMesoscale DiscussionSPCAtchison, Brown, Clay, Doniphan, Douglas, Geary and 12 more118 min
Aug 25, 8:50 AM CDTSevere Thunderstorm WatchSPCBrown, Clay, Cloud, Doniphan, Marshall, Nemaha and 4 more5 hr
Aug 25, 9:24 AM CDTMesoscale DiscussionSPCAnderson, Atchison, Brown, Coffey, Doniphan, Douglas and 10 more2 hr
Aug 25, 11:59 AM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Douglas, Jackson, Jefferson and 4 more91 min
Aug 25, 4:50 PM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Coffey and 21 more85 min
Aug 25, 5:15 PM CDTSevere Thunderstorm WatchSPCAnderson, Coffey, Douglas, Franklin, Jackson, Jefferson and 10 more5 hr
Aug 25, 2:14 AM CDTMesoscale DiscussionSPCAdair, Andrew, Buchanan, Caldwell, Chariton, Clinton and 14 more31 min
Aug 25, 12:35 PM CDTTornado WatchSPCAdair, Audrain, Boone, Caldwell, Callaway, Carroll and 33 more6 hr
Aug 25, 2:20 PM CDTTornado WatchSPCSaint Charles, Saint Louis, City of Saint Louis6 hr
Aug 25, 3:15 PM CDTSevere Thunderstorm WatchSPCCamden, Carter, Christian, Cole, Crawford, Dallas and 25 more6 hr
Aug 25, 5:14 PM CDTMesoscale DiscussionSPCSaint Charles, Saint Louis, City of Saint Louis91 min
Aug 24, 10:41 PM CDTMesoscale DiscussionSPCBoone, Buffalo, Custer, Dawson, Frontier, Garfield and 11 more2 hr
Aug 25, 1:44 AM CDTMesoscale DiscussionSPCAdams, Antelope, Boone, Buffalo, Butler, Clay and 23 more91 min

Nearby

Severe Thunderstorm Watches in Missouri, 2004Severe Thunderstorm Watches in Kansas, 2004Severe Thunderstorm Watches in Nebraska, 2004Every severe thunderstorm watch 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.