Alert archive / Kansas / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 796

September 18, 200525 counties in Kansas; 11 counties in Missouri

The Storm Prediction Center issued this severe thunderstorm watch at Sep 18, 2005, 12:55 AM CDT for 25 counties in Kansas; 11 counties in Missouri. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Sep 18, 2005, 12:55 AM CDT (05:55 UTC)
Expired
Sep 18, 2005, 8:00 AM CDT
In force
7 hr
Issued by
the Storm Prediction Center
All 36 counties

Allen County, KS, Anderson County, KS, Bourbon County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Cherokee County, KS, Coffey County, KS, Cowley County, KS, Crawford County, KS, Dickinson County, KS, Elk County, KS, Franklin County, KS, Greenwood County, KS, Labette County, KS, Linn County, KS, Lyon County, KS, Marion County, KS, Miami County, KS, Montgomery County, KS, Morris County, KS, Neosho County, KS, Osage County, KS, Wilson County, KS, Woodson County, KS, Barton County, MO, Bates County, MO, Cass County, MO, Cedar County, MO, Dade County, MO, Henry County, MO, Jasper County, MO, Johnson County, MO, Lawrence County, MO, St. Clair County, MO, Vernon County, MO

The radar

The Topeka radar (KTWX), 104 km from the middle of the area, began a volume at 05:56 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.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Sep 18, 1:14 AM CDTSevere Thunderstorm WarningTOPDickinson46 min
Sep 18, 1:19 AM CDTSevere Thunderstorm WarningICTMarion26 min
Sep 18, 2:08 AM CDTSevere Thunderstorm WarningTOPGeary, Morris19 min
Sep 18, 3:17 AM CDTSevere Thunderstorm WarningTOPLyon28 min
Sep 18, 5:12 AM CDTSevere Thunderstorm WarningSGFBarton, Cedar, Dade, Vernon63 min
Sep 18, 6:25 AM CDTFlash Flood WarningSGFVernon6 hr
Sep 18, 7:53 AM CDTFlash Flood WarningSGFSt. Clair3 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, 5.9 hours before the alert went out and 97 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 2005-09-18Temperature 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 00:00Z on 2005-09-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 241 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1573 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
241 m²/s²
0-3 km storm-relative helicity
314 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
Sep 18, 12:39 AM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Chautauqua and 22 more66 min
Sep 18, 4:13 AM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Chautauqua and 28 more92 min
Sep 18, 4:08 PM CDTMesoscale DiscussionSPCAtchison, Brown, Clay, Doniphan, Douglas, Jackson and 12 more2 hr
Sep 18, 3:40 PM CDTTornado WatchSPCAtchison7 hr

Nearby

Severe Thunderstorm Watches in Kansas, 2005Severe Thunderstorm Watches in Missouri, 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.