Alert archive / Missouri / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 792

August 27, 200416 counties in Kansas; 23 counties in Missouri

The Storm Prediction Center issued this severe thunderstorm watch at Aug 27, 2004, 2:45 PM CDT for 16 counties in Kansas; 23 counties in Missouri. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Aug 27, 2004, 2:45 PM CDT (19:45 UTC)
Expired
Aug 27, 2004, 9:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 39 counties

Atchison 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, Miami County, KS, Osage County, KS, Pottawatomie County, KS, Shawnee County, KS, Wabaunsee County, KS, Wyandotte County, KS, Adair County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Grundy County, MO, Jackson County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Platte County, MO, Putnam County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Sullivan County, MO

The radar

The Pleasant Hill radar (KEAX), 79 km from the middle of the area, began a volume at 19:48 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

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

IssuedProductOfficeCountiesLasted
Aug 27, 4:00 PM CDTSevere Thunderstorm WarningEAXMercer, Putnam75 min
Aug 27, 4:23 PM CDTSevere Thunderstorm WarningEAXPutnam, Schuyler82 min
Aug 27, 5:10 PM CDTFlash Flood WarningEAXMercer6 hr
Aug 27, 5:20 PM CDTFlash Flood WarningEAXPutnam, Sullivan6 hr
Aug 27, 5:34 PM CDTFlash Flood WarningEAXGrundy6 hr
Aug 27, 5:57 PM CDTSevere Thunderstorm WarningEAXGrundy, Sullivan78 min
Aug 27, 6:09 PM CDTSevere Thunderstorm WarningEAXLeavenworth, Wyandotte66 min
Aug 27, 6:19 PM CDTSevere Thunderstorm WarningEAXJohnson56 min
Aug 27, 6:50 PM CDTFlash Flood WarningEAXJohnson, Wyandotte6 hr
Aug 27, 7:08 PM CDTSevere Thunderstorm WarningEAXDoniphan67 min
Aug 27, 7:12 PM CDTSevere Thunderstorm WarningEAXJackson78 min
Aug 27, 7:19 PM CDTSevere Thunderstorm WarningEAXJohnson, Wyandotte56 min
Aug 27, 7:21 PM CDTSevere Thunderstorm WarningTOPLyon54 min
Aug 27, 7:28 PM CDTSevere Thunderstorm WarningEAXClay, Ray92 min
Aug 27, 7:33 PM CDTSevere Thunderstorm WarningEAXBuchanan57 min
Aug 27, 7:38 PM CDTSevere Thunderstorm WarningEAXCaldwell67 min
Aug 27, 7:39 PM CDTFlash Flood Warning EmergencyEAXClay, Jackson6 hr
Aug 27, 7:40 PM CDTSevere Thunderstorm WarningTOPJackson, Jefferson50 min
Aug 27, 7:56 PM CDTSevere Thunderstorm WarningTOPOsage49 min
Aug 27, 8:09 PM CDTFlash Flood WarningEAXCaldwell, Daviess, Livingston6 hr
Aug 27, 8:10 PM CDTSevere Thunderstorm WarningEAXAtchison, Leavenworth50 min
Aug 27, 8:28 PM CDTFlash Flood WarningTOPDouglas3 hr
Aug 27, 8:31 PM CDTSevere Thunderstorm WarningTOPJefferson14 min
Aug 27, 8:38 PM CDTSevere Thunderstorm WarningEAXCarroll67 min
Aug 27, 8:40 PM CDTFlash Flood WarningEAXLeavenworth6 hr
Aug 27, 8:47 PM CDTSevere Thunderstorm WarningTOPDouglas28 min
Aug 27, 8:59 PM CDTFlash Flood WarningEAXPlatte6 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 12:00Z, 7.8 hours before the alert went out and 85 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 2004-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2123 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 2004-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 273 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
2123 J/kg
Mixed-layer CIN
-102 J/kg
Mixed-layer LCL
790 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
273 m²/s²
0-3 km storm-relative helicity
272 m²/s²
Significant tornado parameter
0.0
Supercell composite
12.6

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 27, 1:07 PM CDTMesoscale DiscussionSPCAllen, Anderson, Atchison, Bourbon, Butler, Chase and 24 more113 min
Aug 27, 3:49 PM CDTMesoscale DiscussionSPCAtchison, Coffey, Doniphan, Douglas, Franklin, Jackson and 10 more86 min
Aug 27, 4:54 PM CDTMesoscale DiscussionSPCButler, Cowley, Sumner96 min
Aug 27, 5:20 PM CDTSevere Thunderstorm WatchSPCButler, Chautauqua, Cowley, Elk, Sumner, Wilson6 hr
Aug 26, 7:45 PM CDTMesoscale DiscussionSPCAndrew, Atchison, Daviess, Gentry, Harrison, Holt and 3 more90 min
Aug 26, 9:13 PM CDTMesoscale DiscussionSPCAdair, Gentry, Grundy, Harrison, Knox, Mercer and 6 more62 min
Aug 26, 9:45 PM CDTSevere Thunderstorm WatchSPCAdair, Clark, Gentry, Grundy, Harrison, Knox and 7 more6 hr
Aug 27, 1:49 AM CDTMesoscale DiscussionSPCAdair, Clark, Grundy, Harrison, Knox, Lewis and 5 more56 min
Aug 27, 9:24 AM CDTMesoscale DiscussionSPCAudrain, Bates, Benton, Boone, Callaway, Camden and 30 more96 min
Aug 27, 9:40 AM CDTSevere Thunderstorm WatchSPCAudrain, Barton, Bates, Benton, Boone, Callaway and 33 more5 hr
Aug 27, 2:45 PM CDTSevere Thunderstorm WatchSPCAudrain, Barton, Bates, Benton, Boone, Callaway and 32 more6 hr
Aug 27, 4:10 PM CDTMesoscale DiscussionSPCClark, Knox, Lewis, Putnam, Schuyler, Scotland2 hr

Nearby

Severe Thunderstorm Watches in Missouri, 2004Severe Thunderstorm Watches in Kansas, 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.