Severe Thunderstorm Warning 277, NWS Paducah, KY

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PADUCAH KY
530 AM CDT SAT JUN 18 2011

.DISCUSSION...
DELAYED DISCUSSION THIS MORNING DUE TO ACTIVE WEATHER.

MAIN CHALLENGE FOR THE NEXT 48 HOURS WILL BE DEFINING THE SPATIAL
AND TEMPORAL ASPECTS OF THE TRAIN OF MCS /MESOSCALE CONVECTIVE
SYSTEMS/ MOVING ALONG THE MEAN FRONTAL BOUNDARIES ORIENTED OVER
THE WFO PAH FORECAST AREA. THE 00Z AND 06Z SATURDAY DETERMINISTIC
GFS AND 21Z FRIDAY/03Z SATURDAY SREF GUIDANCE HAVE A GENERALIZED
SOLUTION ON THE ORIENTATION/TIMING OF THESE SYSTEMS AND WAS
UTILIZED IN MODIFYING THE POP/WX/QPF FORECAST FOR TODAY AND
TONIGHT.

THERE REMAINS SOME UNCERTAINTY AS TO THE EFFECTIVE FRONTAL
BOUNDARY ZONE /DUE TO RAIN INDUCED COLD POOLS/ OVER THE NORTHERN
1/3 OF THE WFO PAH FORECAST AREA FOR SUNDAY. AT THIS TIME...THE
FORECAST IS DIRECTED TOWARD MORE CAPPING OF THE ATMOSPHERE FOR
MOST OF THE WFO PAH FORECAST AREA...WITH THE POSSIBLE EXCEPTION OF
THE INTERSTATE 64 CORRIDOR IN SOUTHERN IL AND SOUTHWEST IN. THIS
IS SOMEWHAT AT ODDS WITH THE SPC DAY TWO OUTLOOK...BUT THIS JUST
MAY BE A MATTER OF TIMING...DEPENDING ON THE POSITION OF THE
EXPECTED OVERNIGHT MCS INTO SUNDAY MORNING.

ADJUSTED TEMPERATURES DOWNWARD TODAY TO REFLECT THE INFLUENCE OF
CLOUD COVER AND ANY EXPECTED PRECIPITATION DURING THE
MORNING...WITH SOME CLEARING EXPECTED DURING THE AFTERNOON HOURS.
OTHERWISE A DEFAULT 20-22 DEGREE DIURNAL RANGE OF TEMPERATURES CAN
BE EXPECTED EARLY IN THE WEEK AS THE UPPER RIDGE BUILDS IN AND
INCREASES THICKNESSES OVER THE AREA.

&&

.AVIATION...
VFR CONDITIONS WILL LIKELY DOMINATE OUTSIDE OF THE MCS /MESOSCALE
CONVECTIVE SYSTEMS/ THAT WILL PUSH ACROSS THE WFO PAH TAF SITES.
HOWEVER...A 1-3 HOUR PERIOD OF MVFR/HIGH IFR CEILINGS AND
VISIBILITIES WILL BE POSSIBLE WITH THE PASSAGE OF THUNDERSTORM
CLUSTERS TODAY AND TONIGHT.

&&

.PAH WATCHES/WARNINGS/ADVISORIES...
KY...NONE.
MO...NONE.
IL...NONE.
IN...NONE.
&&

AVIATION/FIRE WEATHER...CTN/SMITH
SHORT/LONG TERM PUBLIC...SMITH

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PADUCAH KY
808 AM CDT SAT JUN 18 2011

ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087-
100-107>112-114-191000-
JEFFERSON-WAYNE IL-EDWARDS-WABASH-PERRY IL-FRANKLIN-HAMILTON-
WHITE-JACKSON-WILLIAMSON-SALINE-GALLATIN-UNION IL-JOHNSON-POPE-
HARDIN-ALEXANDER-PULASKI-MASSAC-GIBSON-PIKE-POSEY-VANDERBURGH-
WARRICK-SPENCER-FULTON-HICKMAN-CARLISLE-BALLARD-MCCRACKEN-GRAVES-
LIVINGSTON-MARSHALL-CALLOWAY-CRITTENDEN-LYON-TRIGG-CALDWELL-
UNION KY-WEBSTER-HOPKINS-CHRISTIAN-HENDERSON-DAVIESS-MCLEAN-
MUHLENBERG-TODD-PERRY MO-BOLLINGER-CAPE GIRARDEAU-WAYNE MO-CARTER-
RIPLEY-BUTLER-STODDARD-SCOTT-MISSISSIPPI-NEW MADRID-
808 AM CDT SAT JUN 18 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHERN
ILLINOIS...SOUTHWEST INDIANA...WESTERN KENTUCKY AND SOUTHEAST
MISSOURI.

.DAY ONE...TODAY AND TONIGHT

THE STORM PREDICTION CENTER HAS PLACED THE ENTIRE OUTLOOK AREA IN
A SLIGHT RISK FOR SEVERE THUNDERSTORMS THROUGH TONIGHT. THE
GREATEST HAZARD WILL BE DAMAGING WINDS...ESPECIALLY OVER SOUTHEAST
ILLINOIS...SOUTHWEST INDIANA AND WEST KENTUCKY.

OTHER HAZARDS WITH ANY STRONG TO SEVERE THUNDERSTORM CLUSTERS WILL
BE DAMAGING HAIL...FREQUENT LIGHTNING AND HEAVY RAINFALL WHICH MAY
CAUSE LOCALIZED FLOODING IN LOW LYING AND POORLY DRAINED AREAS.

AN ISOLATED TORNADO CANNOT BE RULED OUT WITH ISOLATED STORMS THAT
DEVELOP ALONG AND JUST AHEAD OF THE THUNDERSTORM CLUSTERS.

THE CURRENT WAVE OF STRONG TO SEVERE THUNDERSTORMS WILL MOVE THROUGH
THE QUAD STATE AREA THIS MORNING...DECREASING MARKEDLY IN COVERAGE
AND INTENSITY BY AFTERNOON.

A NEXT WAVE OF STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE
DURING THE EVENING AND OVERNIGHT HOURS. THE EXACT TRACK WILL DEPEND
ON THE DEGREE OF STABILIZATION LEFT FROM EARLIER THUNDERSTORMS.

ANY STORMS THAT DEVELOP WILL LIKELY MOVE EAST OR SOUTHEAST BETWEEN
20 AND 30 MPH.

FOR THOSE PLANNING TRAVEL ON AREA LAKES...WINDS OUTSIDE OF
THUNDERSTORMS SHOULD REMAIN BELOW THE THRESHOLD FOR A LAKE WIND
ADVISORY. HOWEVER...GIVEN THE PROXIMITY TO THUNDERSTORMS...BOATING
ON AREA LAKES SHOULD BE DISCOURAGED TODAY.

MINOR FLOODING WILL CONTINUE ON THE MISSISSIPPI RIVER AT CAPE
GIRARDEAU AND THEBES. PLEASE REFER TO THE LATEST FLOOD STATEMENTS
FOR MORE DETAILS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THE STORM PREDICTION CENTER HAS INCLUDED THE ENTIRE OUTLOOK AREA
IN A SLIGHT RISK FOR SEVERE THUNDERSTORMS FOR SUNDAY.

AT THIS TIME...THE AREA OF GREATEST CONCERN FOR SEVERE
THUNDERSTORMS WILL BE ALONG THE INTERSTATE 64 CORRIDOR OVER
SOUTHEAST ILLINOIS AND SOUTHWEST INDIANA. THE PRIMARY HAZARD WILL
BE DAMAGING WINDS...WITH HAIL...LIGHTNING AND HEAVY RAINFALL AS
SECONDARY HAZARDS.

THE NEXT CHANCE FOR THUNDERSTORMS WILL BE TUESDAY THROUGH
THURSDAY. THE PROBABILITY FOR WIDESPREAD SEVERE WEATHER REMAINS
LOW AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY AND POSSIBLY ON
SUNDAY...ESPECIALLY OVER SOUTHWEST INDIANA...SOUTHERN ILLINOIS AND
THE PENNYRILE REGION OF WEST KENTUCKY...MAINLY EAST OF THE LAND
BETWEEN THE LAKES.

SMITH

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
340 AM CDT SAT JUN 18 2011

ILZ077-078-083-INZ081-082-085>088-180945-
EDWARDS-WABASH-WHITE-GIBSON-PIKE-POSEY-VANDERBURGH-WARRICK-
SPENCER-
INCLUDING THE CITIES OF...ALBION...MOUNT CARMEL...CARMI...
FORT BRANCH...PETERSBURG...POSEYVILLE...EVANSVILLE...BOONVILLE...
ROCKPORT
340 AM CDT SAT JUN 18 2011

...STRONG OUTFLOW WINDS POSSIBLE ACROSS SOUTHWEST INDIANA AND
SOUTHEAST ILLINOIS...

AT 338 AM...RADAR SHOWED A LINE OF STRONG TO SEVERE STORMS FROM
WABASH COUNTY IN SOUTHEAST ILLINOIS INTO GIBSON AND PIKE COUNTIES
IN SOUTHWEST INDIANA...MOVING SOUTHEAST AT 30 MPH.

THE STORMS HAVE PRODUCED OUTFLOW WINDS...OBSERVED PUSHING SOUTH
ACROSS SOUTHWEST INDIANA. THE WINDS FROM THE NORTH COULD REACH
35 TO 50 MPH AS THEY PUSH SOUTH OF THE STORMS...INTO POSEY...
VANDERBURGH...WARRICK AND SPENCER COUNTIES.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
418 AM CDT SAT JUN 18 2011

ILZ075>078-080>083-086-087-INZ081-082-085>088-KYZ014-018-019-
181130-
JEFFERSON-WAYNE IL-EDWARDS-WABASH-PERRY IL-FRANKLIN-HAMILTON-
WHITE-SALINE-GALLATIN-GIBSON-PIKE-POSEY-VANDERBURGH-WARRICK-
SPENCER-UNION KY-HENDERSON-DAVIESS-
INCLUDING THE CITIES OF...MOUNT VERNON...FAIRFIELD...ALBION...
MOUNT CARMEL...PINCKNEYVILLE...WEST FRANKFORT...MCLEANSBORO...
CARMI...HARRISBURG...SHAWNEETOWN...FORT BRANCH...PETERSBURG...
POSEYVILLE...EVANSVILLE...BOONVILLE...ROCKPORT...MORGANFIELD...
HENDERSON...OWENSBORO
418 AM CDT SAT JUN 18 2011

...STRONG STORMS SOUTHERN ILLINOIS...SOUTHWEST INDIANA AND
NORTHWEST KENTUCKY EARLY THIS MORNING...

AT 415 AM...RADAR SHOWED STRONG THUNDERSTORMS ALONG AND NORTH OF
INTERSTATE 64 OVER SOUTHERN ILLINOIS AND SOUTHWEST INDIANA MOVING
SOUTH TO SOUTHEAST AROUND 30 MPH WITH INDIVIDUAL CELLS TENDING
MORE TOWARD THE EAST.

THROUGH THE EARLY DAYLIGHT HOURS...AREAS FROM MOUNT VERNON AND
MCLEANSBORO IN SOUTHERN ILLINOIS...ACROSS MOST OF SOUTHWEST
INDIANA...TO NEAR OWENSBORO KENTUCKY CAN EXPECT STRONG THUNDERSTORMS
CAPABLE OF VERY HEAVY RAINFALL...FREQUENT DANGEROUS LIGHTNING...
BRIEF GUSTY WINDS UP TO 40 MPH AND POSSIBLY HAIL.

BE ALERT FOR STANDING WATER IN LOW LYING AND POOR DRAINAGE AREAS.
STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR ADDITIONAL
STATEMENTS AND POSSIBLE WARNINGS.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
549 AM CDT SAT JUN 18 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0548 AM     HAIL             DU QUOIN                38.00N 89.24W
06/18/2011  E0.75 INCH       PERRY              IL   LAW ENFORCEMENT

&&

K SMITH

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
557 AM CDT SAT JUN 18 2011

ILZ075-080>094-INZ085>088-KYZ007-010-011-013>016-018>021-MOZ076-
086-087-181300-
JEFFERSON-PERRY IL-FRANKLIN-HAMILTON-WHITE-JACKSON-WILLIAMSON-
SALINE-GALLATIN-UNION IL-JOHNSON-POPE-HARDIN-ALEXANDER-PULASKI-
MASSAC-POSEY-VANDERBURGH-WARRICK-SPENCER-LIVINGSTON-CRITTENDEN-
LYON-CALDWELL-UNION KY-WEBSTER-HOPKINS-HENDERSON-DAVIESS-MCLEAN-
MUHLENBERG-PERRY MO-BOLLINGER-CAPE GIRARDEAU-
INCLUDING THE CITIES OF...MOUNT VERNON...PINCKNEYVILLE...
WEST FRANKFORT...MCLEANSBORO...CARMI...CARBONDALE...HERRIN...
HARRISBURG...SHAWNEETOWN...JONESBORO...VIENNA...GOLCONDA...
ELIZABETHTOWN...CAIRO...MOUND CITY...METROPOLIS...POSEYVILLE...
EVANSVILLE...BOONVILLE...ROCKPORT...SMITHLAND...MARION...
EDDYVILLE...PRINCETON...MORGANFIELD...DIXON...MADISONVILLE...
HENDERSON...OWENSBORO...CALHOUN...GREENVILLE...PERRYVILLE...
MARBLE HILL...CAPE GIRARDEAU
557 AM CDT SAT JUN 18 2011

...STRONG STORMS SOUTHERN ILLINOIS AND WESTERN KENTUCKY...

AT 555 AM...RADAR SHOWED A CLUSTER OF STRONG THUNDERSTORMS
FROM NEAR DU QUION ILLINOIS TO NEAR HARRISBURG...TO NEAR
PROVIDENCE KENTUCKY. THE LINE CONTINUED TO DRIFT SOUTH TO
SOUTHEAST AROUND 30 MPH...WHILE INDIVIDUAL STORMS WERE
MOVING EAST.

THROUGH 800 AM...THE STRONG STORMS WILL CONTINUE TO AFFECT
AREAS ALONG AND EAST OF A LINE FROM PERRYVILLE MISSOURI TO
HOPKINSVILLE KENTUCKY...INCLUDING WEST FRANKFORT...HARRISBURG
AND SHAWNEETOWN IN SOUTHERN ILLINOIS...AND MARION...OWENSBORO
CALHOUN AND MADISONVILLE IN WEST KENTUCKY.

THE STRONGER STORMS WILL PRODUCE VERY HEAVY RAIN OF AN INCH OR
MORE IN AN HOUR...GUSTY WINDS TO 40 MPH AND SMALL HAIL ALONG
WITH FREQUENT LIGHTNING. ISOLATED SEVERE STORMS CANNOT BE
RULED OUT.

WATCH FOR STANDING WATER IN LOW LYING AREAS AND ACROSS SOME
ROADS. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR
LATER STATEMENTS AND POSSIBLE WARNINGS.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
658 AM CDT SAT JUN 18 2011

KYZ012-017-022-181245-
CHRISTIAN KY-TODD KY-TRIGG KY-
658 AM CDT SAT JUN 18 2011

...SIGNIFICANT WEATHER ADVISORY FOR TODD AND CHRISTIAN COUNTIES IN
SOUTH CENTRAL KENTUCKY...AND TRIGG COUNTY IN WESTERN KENTUCKY UNTIL
745 AM CDT...

AT 653 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS WITH VERY STRONG WINDS BETWEEN 35 AND
45 MPH...WITH ISOLATED GUSTS AROUND 50 MPH POSSIBLE. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM 17 MILES NORTHEAST OF
CLIFTY TO 7 MILES SOUTH OF CROFTON TO 6 MILES NORTHEAST OF
ROCKCASTLE...MOVING SOUTH AT 20 MPH.

LOCATIONS THAT MAY BE IMPACTED INCLUDE ENERGY...CADIZ...LAND BETWEEN
THE LAKES AREA...HOPKINSVILLE...CANTON...ALLEGRE...PEMBROKE...
TRENTON...OAK GROVE...LINTON...HERNDON...GUTHRIE AND ELKTON.

THESE STORMS WILL PRODUCE VERY HEAVY RAIN...UP TO AN INCH AN
HOUR...WHICH MAY RESULT IN STANDING WATER ON AREA ROADS. WATER
LEVELS IN SMALL CREEKS...STREAMS AND IN DITCHES MAY RISE
QUICKLY...ESPECIALLY IN POOR DRAINAGE AREAS.

FREQUENT DANGEROUS LIGHTNING IS OCCURRING WITH THIS STORM. THIS STORM
WILL PRODUCE VERY HEAVY RAIN AS WELL...WHICH MAY RESULT IN STANDING
WATER ON AREA ROADS. WATER LEVELS IN SMALL CREEKS...STREAMS AND IN
DITCHES MAY RISE QUICKLY...ESPECIALLY IN POOR DRAINAGE AREAS.

SMITH

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
749 AM CDT SAT JUN 18 2011

ILZ075-080>082-084-085-181330-
WILLIAMSON IL-JACKSON IL-FRANKLIN IL-PERRY IL-HAMILTON IL-
JEFFERSON IL-
749 AM CDT SAT JUN 18 2011

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN JEFFERSON...WESTERN
HAMILTON...SOUTHEASTERN PERRY AND FRANKLIN COUNTIES IN SOUTH CENTRAL
ILLINOIS...AND NORTHERN JACKSON AND WESTERN WILLIAMSON COUNTIES IN
SOUTHERN ILLINOIS UNTIL 830 AM CDT...

AT 744 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING WITH DIME SIZE
HAIL...AND VERY STRONG WINDS BETWEEN 50 AND 55 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM SESSER TO 9 MILES WEST OF
MURPHYSBORO...MOVING SOUTHEAST AT 35 MPH.

LOCATIONS THAT MAY BE IMPACTED INCLUDE ELKVILLE...VALIER...REND LAKE
AREA...NORTH CITY...CHRISTOPHER...DE SOTO...BUCKNER...ROYALTON...WEST
CITY...HURST...BUSH...BENTON...ZEIGLER...EWING...CARBONDALE...
ORIENT...CAMBRIA...COLP...FREEMAN SPUR...WEST FRANKFORT...HANAFORD...
CARTERVILLE...HERRIN...CRAINVILLE...ENERGY...MACEDONIA...JOHNSTON
CITY...WHITEASH...THOMPSONVILLE...SPILLERTOWN...MARION AND PITTSBURG.

FREQUENT DANGEROUS LIGHTNING IS OCCURRING WITH THIS STORM. THIS STORM
WILL PRODUCE VERY HEAVY RAIN AS WELL...WHICH MAY RESULT IN STANDING
WATER ON AREA ROADS. WATER LEVELS IN SMALL CREEKS...STREAMS AND IN
DITCHES MAY RISE QUICKLY...ESPECIALLY IN POOR DRAINAGE AREAS.

SMITH