Alert archive / Missouri / Tornado Watches in 2001

Tornado Watch 118

April 10, 200111 counties in Kansas; 32 counties in Missouri

The Storm Prediction Center issued this tornado watch at Apr 10, 2001, 5:00 PM CDT for 11 counties in Kansas; 32 counties in Missouri. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Apr 10, 2001, 5:00 PM CDT (22:00 UTC)
Expired: Apr 10, 2001, 10:00 PM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 43 counties

Atchison County, KS, Brown County, KS, Doniphan County, KS, Douglas County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Marshall County, KS, Nemaha County, KS, Wyandotte County, KS, Andrew County, MO, Bates County, MO, Benton County, MO, Boone County, MO, Buchanan County, MO, Caldwell County, MO, Callaway County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Cole County, MO, Cooper County, MO, Daviess County, MO, DeKalb County, MO, Gasconade County, MO, Henry County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Livingston County, MO, Maries County, MO, Miller County, MO, Moniteau County, MO, Morgan County, MO, Osage County, MO, Pettis County, MO, Platte County, MO, Ray County, MO, Saline County, MO

The radar

The Pleasant Hill radar (KEAX), 64 km from the middle of the area, began a volume at 22:01 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

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

Issued	Product	Office	Counties	Lasted
Apr 10, 5:05 PM CDT	Tornado Warning	EAX	Cass, Johnson	55 min
Apr 10, 5:29 PM CDT	Flash Flood Warning	EAX	Johnson, Lafayette	4 hr
Apr 10, 5:29 PM CDT	Tornado Warning	EAX	Pettis	46 min
Apr 10, 5:38 PM CDT	Severe Thunderstorm Warning	EAX	Saline	52 min
Apr 10, 5:45 PM CDT	Flash Flood Warning	EAX	Pettis, Saline	3 hr
Apr 10, 5:59 PM CDT	Tornado Warning	EAX	Cooper	61 min
Apr 10, 6:26 PM CDT	Tornado Warning	LSX	Boone, Moniteau	64 min
Apr 10, 6:34 PM CDT	Severe Thunderstorm Warning	EAX	Andrew	41 min
Apr 10, 6:38 PM CDT	Flash Flood Warning	EAX	Cooper, Howard	112 min
Apr 10, 6:56 PM CDT	Tornado Warning	LSX	Callaway	64 min
Apr 10, 7:17 PM CDT	Flash Flood Warning	LSX	Boone	118 min

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 10.0 hours before the alert went out and 160 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 17 J/kg
Mixed-layer CIN: -302 J/kg
Mixed-layer LCL: 870 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 276 m²/s²
0-3 km storm-relative helicity: 302 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

000 
WWUS9 KMKC 102158
SEL8  

SEL8  
MKC WW 102149
KSZ000-MOZ000-110300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 118
STORM PREDICTION CENTER NORMAN OK
449 PM CDT TUE APR 10 2001

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

   NORTHEAST KANSAS                             
   WESTERN AND CENTRAL MISSOURI                           

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 500 PM UNTIL 1000
PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 60 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 90 STATUTE MILES EAST AND WEST
OF A LINE FROM 25 MILES NORTHWEST OF SAINT JOSEPH MISSOURI TO 40
MILES WEST OF VICHY MISSOURI.

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.

OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES SEVERE
THUNDERSTORM WATCH NUMBER 116.  WATCH NUMBER 116 WILL NOT BE IN
EFFECT AFTER 500 PM CDT.  CONTINUE...WW 117...

DISCUSSION...SUPERCELLS EXPECTED TO CONTINUE DEVELOPING INVOF
STALLED FRONT/OUTFLOW BOUNDARY DRAPED WNW/ESE ACROSS NE KS/CNTRL
MO.  DEEP LAYER SHEAR ATTM ON THE ORDER OF 60 KTS WILL REMAIN
STRONG THROUGH THE EVENING.  LOW-LEVEL SHEAR SHOWS SUFFICIENT
TURNING TO SUPPORT LOW LEVEL STORM ROTATION INVOF BOUNDARY GIVEN
RELATIVELY MOIST BOUNDARY LAYER/LOW LCLS.  

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 50 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. 
MEAN STORM MOTION VECTOR 28035.

...CORFIDI

;400,0933 380,0905 380,0940 400,0965;

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 10, 12:00 AM CDT	Severe Thunderstorm Watch	SPC	Allen, Anderson, Bourbon, Chautauqua, Coffey, Crawford and 9 more	5 hr
Apr 10, 12:15 AM CDT	Severe Thunderstorm Watch	SPC	Allen, Anderson, Bourbon, Chautauqua, Coffey, Crawford and 9 more	5 hr
Apr 10, 11:15 AM CDT	Severe Thunderstorm Watch	SPC	Anderson, Atchison, Barton, Brown, Chase, Clay and 42 more	6 hr

Nearby

Tornado Watches in Missouri, 2001 Tornado Watches in Kansas, 2001 Every tornado watch in 2001

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.