Severe Thunderstorm Watch 427

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTHERN IOWA
WESTERN AND CENTRAL ILLINOIS
NORTHERN MISSOURI
EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 915 PM UNTIL
500 AM CDT.
HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES WEST OF
LAMONI IOWA TO 10 MILES SOUTH SOUTHEAST OF DECATUR ILLINOIS. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU7).
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
DISCUSSION...TSTMS ARE EXPECTED TO INCREASE IN BANDS ALONG THE NOSE
OF AN INCREASING SWLY LOW-LEVEL JET FROM PARTS OF SRN IA...CNTRL/NRN
MO INTO WRN IL OVERNIGHT. STEEP MID-LEVEL LAPSE RATES ON THE ORDER
OF 8 DEG C PER KM AND EFFECTIVE SHEAR IN EXCESS OF 50 KTS SUGGESTS
THAT ELEVATED SUPERCELLS WILL GRADUALLY EVOLVE WITH LARGE HAIL
LIKELY AND PERHAPS GUSTY WINDS.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 28025.
..RACY/THOMPSON
. IOWA COUNTIES INCLUDED ARE
ADAIR ADAMS APPANOOSE
CASS CLARKE DAVIS
DECATUR DES MOINES HENRY
JEFFERSON KEOKUK LEE
LOUISA LUCAS MADISON
MAHASKA MARION MONROE
RINGGOLD TAYLOR UNION
VAN BUREN WAPELLO WARREN
WASHINGTON WAYNE
ILLINOIS COUNTIES INCLUDED ARE
ADAMS BOND BROWN
CALHOUN CASS CHRISTIAN
CLINTON DE WITT FAYETTE
FULTON GREENE HANCOCK
HENDERSON JERSEY KNOX
LOGAN MACON MACOUPIN
MADISON MARION MARSHALL
MASON MCDONOUGH MCLEAN
MENARD MERCER MONTGOMERY
MORGAN PEORIA PIKE
SANGAMON SCHUYLER SCOTT
SHELBY ST. CLAIR STARK
TAZEWELL WARREN WASHINGTON
WOODFORD
MISSOURI COUNTIES INCLUDED ARE
ADAIR AUDRAIN CHARITON
CLARK DAVIESS GENTRY
GRUNDY HARRISON KNOX
LEWIS LINCOLN LINN
LIVINGSTON MACON MARION
MERCER MONROE PIKE
PUTNAM RALLS RANDOLPH
SCHUYLER SCOTLAND SHELBY
ST. CHARLES ST. LOUIS SULLIVAN
WORTH
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
427 IN EFFECT UNTIL 5 AM CDT TUESDAY FOR THE FOLLOWING AREAS
IN ILLINOIS THIS WATCH INCLUDES 5 COUNTIES
IN NORTHWEST ILLINOIS
MERCER
IN WEST CENTRAL ILLINOIS
HANCOCK HENDERSON MCDONOUGH
WARREN
IN IOWA THIS WATCH INCLUDES 8 COUNTIES
IN SOUTHEAST IOWA
DES MOINES HENRY IA JEFFERSON
KEOKUK LEE LOUISA
VAN BUREN WASHINGTON
IN MISSOURI THIS WATCH INCLUDES 2 COUNTIES
IN NORTHEAST MISSOURI
CLARK SCOTLAND
THIS INCLUDES THE CITIES OF...ALEDO...BURLINGTON...CARTHAGE...
FAIRFIELD...FORT MADISON...KAHOKA...KEOSAUQUA...MACOMB...
MEMPHIS...MONMOUTH...MOUNT PLEASANT...OQUAWKA...SIGOURNEY...
WAPELLO AND WASHINGTON.
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
427 IN EFFECT UNTIL 5 AM CDT TUESDAY FOR THE FOLLOWING AREAS
IN IOWA THIS WATCH INCLUDES 18 COUNTIES
IN SOUTH CENTRAL IOWA
APPANOOSE CLARKE DECATUR
LUCAS MADISON MAHASKA
MARION MONROE RINGGOLD
UNION WARREN WAYNE
IN SOUTHEAST IOWA
DAVIS WAPELLO
IN SOUTHWEST IOWA
ADAIR ADAMS CASS
TAYLOR
THIS INCLUDES THE CITIES OF...ALBIA...ATLANTIC...BEDFORD...
BLOOMFIELD...CENTERVILLE...CHARITON..CORNING...CORYDON...
CRESTON...GREENFIELD...INDIANOLA...KNOXVILLE..LAMONI...
MOUNT AYR...OSCEOLA...OSKALOOSA...OTTUMWA AND WINTERSET.
SMALL