Alert archive / Missouri / Tornado Watches in 2005

Tornado Watch 245

May 11, 200512 counties in Kansas; 28 counties in Missouri; Pawnee County, Richardson County, Nebraska

The Storm Prediction Center issued this tornado watch at May 11, 2005, 11:45 AM CDT for 12 counties in Kansas; 28 counties in Missouri; Pawnee County, Richardson County, Nebraska. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
May 11, 2005, 11:45 AM CDT (16:45 UTC)
Expired
May 11, 2005, 7:00 PM CDT
In force
7 hr
Issued by
the Storm Prediction Center
All 42 counties

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, Shawnee County, KS, Wabaunsee County, KS, Wyandotte County, KS, Adair County, MO, Andrew 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, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Howard County, MO, Jackson County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Nodaway County, MO, Platte County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Sullivan County, MO, Pawnee County, NE, Richardson County, NE

The radar

The Pleasant Hill radar (KEAX), 124 km from the middle of the area, began a volume at 16:44 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

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

IssuedProductOfficeCountiesLasted
May 11, 1:01 PM CDTSevere Thunderstorm WarningEAXLeavenworth44 min
May 11, 1:22 PM CDTTornado WarningEAXLeavenworth23 min
May 11, 1:22 PM CDTSevere Thunderstorm WarningEAXChariton38 min
May 11, 1:36 PM CDTTornado WarningEAXChariton, Saline40 min
May 11, 1:45 PM CDTTornado WarningEAXPlatte30 min
May 11, 1:53 PM CDTSevere Thunderstorm WarningEAXHoward, Randolph52 min
May 11, 2:02 PM CDTSevere Thunderstorm WarningTOPJackson, Shawnee43 min
May 11, 2:13 PM CDTTornado WarningEAXClay, Platte31 min
May 11, 2:17 PM CDTSevere Thunderstorm WarningEAXHoward, Randolph43 min
May 11, 2:20 PM CDTSevere Thunderstorm WarningTOPJefferson40 min
May 11, 2:23 PM CDTSevere Thunderstorm WarningEAXClinton45 min
May 11, 2:40 PM CDTSevere Thunderstorm WarningEAXAtchison42 min
May 11, 2:40 PM CDTSevere Thunderstorm WarningEAXCooper, Howard, Saline44 min
May 11, 2:41 PM CDTSevere Thunderstorm WarningTOPJackson, Shawnee41 min
May 11, 2:43 PM CDTSevere Thunderstorm WarningEAXClay13 min
May 11, 2:52 PM CDTSevere Thunderstorm WarningEAXCaldwell, Ray46 min
May 11, 2:55 PM CDTSevere Thunderstorm WarningTOPJefferson50 min
May 11, 3:13 PM CDTSevere Thunderstorm WarningEAXRay47 min
May 11, 3:14 PM CDTSevere Thunderstorm WarningEAXLeavenworth, Wyandotte32 min
May 11, 3:21 PM CDTSevere Thunderstorm WarningEAXLeavenworth49 min
May 11, 3:43 PM CDTSevere Thunderstorm WarningEAXJackson, Lafayette, Ray33 min
May 11, 3:51 PM CDTSevere Thunderstorm WarningEAXLeavenworth, Wyandotte39 min
May 11, 3:53 PM CDTSevere Thunderstorm WarningTOPPottawatomie67 min
May 11, 4:10 PM CDTFlash Flood WarningEAXLeavenworth, Wyandotte6 hr
May 11, 4:19 PM CDTSevere Thunderstorm WarningEAXCarroll, Chariton, Saline41 min
May 11, 4:24 PM CDTSevere Thunderstorm WarningEAXJackson38 min
May 11, 4:37 PM CDTSevere Thunderstorm WarningEAXLafayette38 min
May 11, 4:47 PM CDTSevere Thunderstorm WarningTOPBrown, Jackson28 min
May 11, 4:52 PM CDTSevere Thunderstorm WarningEAXCass, Jackson23 min
May 11, 4:56 PM CDTSevere Thunderstorm WarningTOPPottawatomie64 min
May 11, 4:56 PM CDTSevere Thunderstorm WarningTOPMarshall, Washington49 min
May 11, 4:56 PM CDTSevere Thunderstorm WarningEAXCarroll29 min
May 11, 5:02 PM CDTFlash Flood WarningEAXCarroll, Chariton, Howard, Randolph, Saline6 hr
May 11, 5:49 PM CDTFlash Flood WarningTOPPottawatomie3 hr
May 11, 5:54 PM CDTSevere Thunderstorm WarningTOPMarshall51 min
May 11, 6:35 PM CDTSevere Thunderstorm WarningTOPMarshall26 min

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, 4.8 hours before the alert went out and 106 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 2005-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1968 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 2005-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 262 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
1968 J/kg
Mixed-layer CIN
-194 J/kg
Mixed-layer LCL
714 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
262 m²/s²
0-3 km storm-relative helicity
255 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS20 KWNS 111651
SEL5  
SPC WW 111651
KSZ000-MOZ000-120000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 245
NWS STORM PREDICTION CENTER NORMAN OK
1145 AM CDT WED MAY 11 2005

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       NORTHEAST KANSAS
       NORTHERN MISSOURI

EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 1145 AM UNTIL
700 PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 30 MILES NORTH OF MANHATTAN KANSAS
TO 25 MILES SOUTH SOUTHEAST OF KIRKSVILLE MISSOURI.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU5).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

DISCUSSION...WEAK MID LEVEL IMPULSE IS ENHANCING THUNDERSTORM
DEVELOPMENT WITHIN A STRONGLY UNSTABLE AND VERY WEAKLY CAPPED
ENVIRONMENT OVER NERN KS/NWRN MO LATE THIS MORNING.  FURTHER HEATING
WILL INCREASE THE POTENTIAL FOR STORMS TO ROOT INTO THE BOUNDARY
LAYER...ESPECIALLY NEAR E-W SURFACE BOUNDARY EXTENDING ACROSS NRN MO
AND INTO NERN KS.  LOW AND DEEP LAYER SHEAR REMAIN SUPPORTIVE OF
SUPERCELLS AND POSSIBLY TORNADOES WITH ANY STORM NEAR THIS
BOUNDARY...ALONG WITH VERY LARGE HAIL AND DAMAGING WINDS.  LARGE
HAIL THREAT WILL BE DOMINANT SEVERE POTENTIAL FOR ELEVATED STORMS
NORTH OF THE FRONT.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 25025.


...EVANS

401,0964 402,0922 390,0922 385,0964

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 10, 7:00 PM CDTSevere Thunderstorm WatchSPCCheyenne, Decatur, Norton, Phillips, Rawlins, Smith7 hr
May 11, 8:41 AM CDTMesoscale DiscussionSPCAtchison, Brown, Clay, Doniphan, Douglas, Geary and 12 more2 hr
May 11, 2:36 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Ellis, Finney, Gove, Graham and 27 more114 min
May 11, 2:55 PM CDTTornado WatchSPCClay, Cloud, Dickinson, Ellis, Geary, Jewell and 11 more7 hr
May 11, 3:10 PM CDTTornado WatchSPCCheyenne, Clark, Decatur, Finney, Ford, Gove and 24 more7 hr
May 11, 3:41 PM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Jackson, Jefferson, Leavenworth and 4 more94 min
May 11, 4:50 PM CDTSevere Thunderstorm WatchSPCJohnson, Linn, Miami6 hr
May 11, 4:53 PM CDTMesoscale DiscussionSPCClay, Cloud, Dickinson, Ellis, Geary, Jewell and 11 more97 min
May 11, 5:13 PM CDTMesoscale DiscussionSPCCheyenne, Clark, Decatur, Finney, Ford, Gove and 24 more92 min
May 11, 5:25 PM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Douglas, Franklin, Jackson and 13 more2 hr
May 11, 6:45 PM CDTSevere Thunderstorm WatchSPCBrown, Jackson, Jefferson, Marshall, Nemaha, Pottawatomie and 1 more7 hr
May 11, 1:37 PM CDTMesoscale DiscussionSPCAdair, Audrain, Chariton, Clark, Howard, Knox and 11 more113 min
May 11, 1:55 PM CDTSevere Thunderstorm WatchSPCAudrain, Boone, Callaway, Clark, Cole, Knox and 16 more6 hr
May 10, 9:14 PM CDTMesoscale DiscussionSPCBurt, Butler, Colfax, Cuming, Dakota, Dodge and 10 more2 hr
May 11, 3:55 PM CDTSevere Thunderstorm WatchSPCAdams, Arthur, Boone, Buffalo, Butler, Chase and 34 more8 hr
May 11, 4:00 PM CDTMesoscale DiscussionSPCAntelope, Arthur, Blaine, Boone, Brown, Buffalo and 25 more2 hr

Nearby

Tornado Watches in Missouri, 2005Tornado Watches in Kansas, 2005Tornado Watches in Nebraska, 2005Every tornado 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.