Alert archive / Missouri / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 154

April 11, 20056 counties in Kansas; 13 counties in Missouri

The Storm Prediction Center issued this severe thunderstorm watch at Apr 11, 2005, 5:40 PM CDT for 6 counties in Kansas; 13 counties in Missouri. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Apr 11, 2005, 5:40 PM CDT (22:40 UTC)
Expired
Apr 11, 2005, 10:00 PM CDT
In force
4 hr
Issued by
the Storm Prediction Center

Counties Doniphan County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Miami County, KS, Wyandotte County, KS, Bates County, MO, Buchanan County, MO, Caldwell County, MO, Cass County, MO, Clay County, MO, Clinton County, MO, Henry County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Livingston County, MO, Platte County, MO, Ray County, MO

The radar

The Pleasant Hill radar (KEAX), 37 km from the middle of the area, began a volume at 22:41 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

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

IssuedProductOfficeCountiesLasted
Apr 11, 5:52 PM CDTSevere Thunderstorm WarningEAXMiami53 min
Apr 11, 6:00 PM CDTSevere Thunderstorm WarningEAXLeavenworth45 min
Apr 11, 6:28 PM CDTSevere Thunderstorm WarningEAXBates, Cass48 min
Apr 11, 6:38 PM CDTSevere Thunderstorm WarningEAXJohnson, Miami52 min
Apr 11, 7:10 PM CDTSevere Thunderstorm WarningEAXLeavenworth, Wyandotte50 min
Apr 11, 7:49 PM CDTFlash Flood WarningEAXDoniphan, Leavenworth6 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, 10.7 hours before the alert went out and 127 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 2005-04-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 19 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 2005-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 110 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
19 J/kg
Mixed-layer CIN
-216 J/kg
Mixed-layer LCL
1068 m above ground
0-6 km bulk shear
82 kt
0-1 km storm-relative helicity
110 m²/s²
0-3 km storm-relative helicity
172 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 10, 8:53 PM CDTMesoscale DiscussionSPCCherokee, Crawford, Labette, Montgomery2 hr
Apr 10, 9:23 PM CDTMesoscale DiscussionSPCButler, Clay, Cloud, Cowley, Dickinson, Ellsworth and 14 more2 hr
Apr 11, 10:55 AM CDTMesoscale DiscussionSPCBrown, Clay, Cloud, Geary, Marshall, Nemaha and 4 more95 min
Apr 11, 11:55 AM CDTTornado WatchSPCBrown, Chase, Clay, Dickinson, Geary, Jackson and 13 more8 hr
Apr 11, 2:01 PM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Cherokee, Coffey, Crawford and 10 more89 min
Apr 11, 5:01 PM CDTMesoscale DiscussionSPCBrown, Clay, Geary, Jackson, Marshall, Nemaha and 5 more59 min
Apr 10, 7:49 PM CDTMesoscale DiscussionSPCAtchison, Holt56 min
Apr 10, 9:15 PM CDTSevere Thunderstorm WatchSPCBarry, Lawrence, McDonald, Newton, Stone7 hr
Apr 11, 1:23 AM CDTMesoscale DiscussionSPCBarry, McDonald, Newton, Stone67 min
Apr 11, 6:17 AM CDTMesoscale DiscussionSPCButler, Dunklin, Mississippi, New Madrid, Oregon, Pemiscot and 3 more118 min

Nearby

Severe Thunderstorm Watches in Missouri, 2005Severe Thunderstorm Watches in Kansas, 2005Every severe thunderstorm watch in 2005

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.