Alert archive / Kansas / Tornado Watches in 2002

Tornado Watch 157

April 27, 200219 counties in Kansas; 18 counties in Missouri

The Storm Prediction Center issued this tornado watch at Apr 27, 2002, 3:00 PM CDT for 19 counties in Kansas; 18 counties in Missouri. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Apr 27, 2002, 3:00 PM CDT (20:00 UTC)
Expired: Apr 27, 2002, 8:00 PM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 37 counties

Anderson County, KS, Atchison County, KS, Coffey County, KS, Douglas County, KS, Franklin County, KS, Greenwood County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Miami County, KS, Osage County, KS, Pottawatomie County, KS, Shawnee County, KS, Wabaunsee County, KS, Woodson County, KS, Wyandotte County, KS, Bates County, MO, Benton County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Clay County, MO, Clinton County, MO, Henry County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Pettis County, MO, Platte County, MO, Ray County, MO, Saline County, MO

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Apr 27, 4:09 PM CDT	Severe Thunderstorm Warning	EAX	Atchison	66 min
Apr 27, 4:45 PM CDT	Tornado Warning	EAX	Andrew, Buchanan	30 min
Apr 27, 5:50 PM CDT	Tornado Warning	EAX	Caldwell	40 min
Apr 27, 6:15 PM CDT	Tornado Warning	EAX	Livingston	45 min
Apr 27, 6:25 PM CDT	Tornado Warning	EAX	Pettis	50 min
Apr 27, 6:53 PM CDT	Tornado Warning	EAX	Linn	37 min

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 8.0 hours before the alert went out and 51 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: 5 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 441 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 528 m²/s²
0-3 km storm-relative helicity: 630 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
WWUS20 KWNS 271950
SEL7  
SPC WW 271944
KSZ000-MOZ000-280100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 157
STORM PREDICTION CENTER NORMAN OK
244 PM CDT SAT APR 27 2002

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

   NORTHEASTERN KANSAS                             
   WEST CENTRAL MISSOURI                           

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 300 PM UNTIL 800
PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 60 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 25 MILES NORTH NORTHWEST OF EMPORIA KANSAS TO
35 MILES NORTHEAST OF KNOB NOSTER 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...  CONTINUE...WW 156...

DISCUSSION...STORMS ARE BEGINNING TO DEVELOP ALONG THE EWD MOVING
DRYLINE AS WARMING TEMPERATURES AND DEWPOINTS IN THE LOWER TO MID
60S ARE RESULTING IN 1000-1500 J/KG OF MLCAPE. STORMS SHOULD
INCREASE IN NUMBER WITH LARGE HAIL THE MAIN THREAT. A FEW TORNADOES
ARE ALSO POSSIBLE...ESPECIALLY STORMS THAT CROSS THE WARM FRONT. 

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. 
MEAN STORM MOTION VECTOR 24045.


...IMY

393,0962 395,0930 381,0930 374,0962

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 27, 12:30 PM CDT	Tornado Watch	SPC	Cloud, Jewell, Marshall, Mitchell, Nemaha, Osborne and 3 more	6 hr
Apr 27, 3:30 PM CDT	Tornado Watch	SPC	Brown, Doniphan	5 hr
Apr 27, 6:30 PM CDT	Tornado Watch	SPC	Adair, Audrain, Benton, Boone, Callaway, Camden and 49 more	6 hr

Nearby

Tornado Watches in Kansas, 2002 Tornado Watches in Missouri, 2002 Every tornado watch in 2002

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.