Severe Thunderstorm Warning 73, NWS Paducah, KY

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PADUCAH KY
725 PM CDT SUN MAY 24 2015

.UPDATE...
ISSUED AT 720 PM CDT SUN MAY 24 2015

WE DECIDED TO EXTEND THE LAKE WIND ADVISORY THROUGH AT LEAST THE
EVENING HOURS. CONTRARY TO WHAT WE NORMALLY EXPERIENCE DURING THE
BOATING SEASON...WINDS ARE EXPECTED TO REMAIN ELEVATED THROUGH AT
LEAST THE EVENING AS LOW PRESSURE OVER MISSOURI KEEPS A STRONG
GRADIENT IN PLACE. WINDS AROUND 15 MPH ARE EXPECTED WITH SOME
GUSTS OF 20 TO 25 MPH. ALSO WEIGHING ON OUR DECISION IS THE
HOLIDAY WEEKEND AND ASSOCIATED RECREATIONAL BOATING ACTIVITIES.

&&

.SHORT TERM...(TONIGHT THROUGH TUESDAY NIGHT)
ISSUED AT 310 PM CDT SUN MAY 24 2015

ABUNDANT SUNSHINE THIS AFTERNOON RESULTED IN WARMER TEMPS AND MORE
MIXING THAN INDICATED BY MOST OF THE MODELS. THE MIXING DOWN OF
STRONGER WINDS PROMPTED THE ISSUANCE OF A LAKE WIND
ADVISORY...WHICH WILL EXPIRE EARLY THIS EVENING. EVEN THOUGH THE
LOW LEVELS HAVE WARMED AND MOISTENED...INSTABILITY IS STILL WEAK
DUE TO MARGINAL MID LEVEL LAPSE RATES. NOTHING MORE THAN ISOLATED
SHOWERS HAVE DEVELOPED SO FAR THIS AFTERNOON...AND THESE ARE
CONFINED TO THE OZARK FOOTHILLS.

SHOWERS AND STORMS WILL INCREASE IN COVERAGE AND INTENSITY OVER
THE NEXT SEVERAL HOURS AS A 500 MB SHORTWAVE MOVES NORTHEAST FROM
THE SOUTHERN PLAINS. DEEP-LAYER WIND FIELDS WILL INCREASE...WITH
40 TO 50 KNOTS OF NEARLY UNI-DIRECTIONAL FLOW FROM 925 TO 500 MB
LATER THIS EVENING. AS NOTED BY SPC...THIS IS MORE THAN SUFFICIENT
FOR LOCALLY DAMAGING WINDS AND/OR ROTATION IN DISCRETE CELLS OR
BOWING LINE SEGMENTS. HOWEVER...INSTABILITY WILL BE ON THE WANE
AFTER DARK...WHEN MOST OF THE ACTIVITY WILL CROSS OUR AREA. THE
HIGHEST POTENTIAL OF ANY ISOLATED SEVERE WEATHER APPEARS TO BE
OVER SE MISSOURI LATER THIS AFTERNOON AND EARLY THIS EVENING. THE
ACTIVITY WILL GRADUALLY SPREAD ACROSS THE REMAINDER OF THE REGION
TONIGHT...WITH A SLOW WEAKENING TREND EXPECTED.

ON MONDAY...THE 500 MB SHORTWAVE WILL REACH THE GREAT LAKES REGION
BY EARLY AFTERNOON. THE COVERAGE OF PRECIP WILL DIMINISH IN THE
MORNING AS THE SHORTWAVE DEPARTS. IT WILL REMAIN RATHER WARM AND
HUMID...AND YET ANOTHER SHORTWAVE WILL BE MOVING NORTHEAST FROM
THE SOUTHERN PLAINS BY EVENING. THEREFORE...ISOLATED TO
SCATTERED SHOWERS AND STORMS MAY OCCUR IN THE AFTERNOON.

SHOWERS AND STORMS WILL INCREASE MONDAY NIGHT AS THE 500 MB
SHORTWAVE CONTINUES NORTHEAST...APPROACHING THE LOWER OHIO VALLEY
AT 12Z TUESDAY. WIND FIELDS WILL BE CONSIDERABLY WEAKER WITH THIS
SYSTEM. HEAVY RAINFALL APPEARS TO BE THE PRIMARY CONCERN. PRECIP
WILL DIMINISH TUESDAY AFTERNOON AND EVENING AS THE SYSTEM MOVES
INTO THE GREAT LAKES REGION.

TOTAL RAINFALL THROUGH TUESDAY WILL BE LOCALLY HEAVY. THE HEAVIEST
RAINFALL FROM BOTH SHORTWAVES IS EXPECTED OVER SE MISSOURI...WHERE
ONE TO TWO INCHES IS FORECAST IN EACH EVENT. DEPENDING ON HOW MUCH
FALLS TONIGHT...THE SECOND EVENT MONDAY NIGHT INTO TUESDAY MAY
WARRANT SOME FLOODING CONCERNS THERE.

.LONG TERM...(WEDNESDAY THROUGH SUNDAY)
ISSUED AT 310 PM CDT SUN MAY 24 2015

IT STILL LOOKS LIKE A WARM AND HUMID SECOND HALF OF THE WORK WEEK TO
COME...FOLLOWED BY A WET WEEKEND.

THE MODELS SEEM TO FOCUS THUNDERSTORM DEVELOPMENT ACROSS THE
NORTHERN HALF OF THE REGION WEDNESDAY AFTERNOON. THIS APPEARS TO BE
FOCUSED ALONG A REMNANT FRONTAL BOUNDARY CONNECTING THE RECENTLY
DEPARTED SYSTEM TO A NEW WARM FRONT DEVELOPING OVER THE PLAINS. WENT
WITH BETTER CHANCES UP THERE DUE TO THE PERSISTENCE OF THIS SIGNAL.
OTHERWISE...ISOLATED TO SCATTERED DIURNAL ACTIVITY WILL BE POSSIBLE
THROUGH FRIDAY. THE FLOW WILL BE WEAK THROUGHOUT THE LAST HALF OF
THE WORK WEEK...SO LOCALLY HEAVY RAINFALL AND LIGHTNING WILL BE THE
PRIMARY CONCERNS.

TEMPERATURES WILL START OUT A FEW DEGREES ABOVE NORMAL ON WEDNESDAY
AND THEN CLIMB AT LEAST INTO MIDDLE 80S THURSDAY AND FRIDAY.
GUIDANCE HAS THIS CAPTURED WELL...SO NO NEED TO DEVIATE FROM IT. THE
HUMIDITY MAY PUSH HEAT INDICES UP NEAR 90 BY FRIDAY AFTERNOON.

HEADING INTO NEXT WEEKEND...COVERAGE OF SHOWERS AND THUNDERSTORMS
SHOULD BE GREATER...AS A COLD FRONT AND UPPER-LEVEL STORM SYSTEM
APPROACH FROM THE NORTHWEST. BEST GUESS AT A COLD FRONTAL PASSAGE
WOULD BE SOMETIME SUNDAY. THE FLOW ALOFT WILL STILL BE RATHER
WEAK...SO THE SEVERE THREAT NEXT WEEKEND SEEMS MINIMAL AT THIS TIME.
TEMPERATURES WILL BE HIGHLY DEPENDENT ON CONVECTION AND RELATED
CLOUD COVER. FIGURE HIGHS WILL TREND DOWN TOWARD 80 OVER MUCH OF THE
AREA BY SUNDAY.

&&

.AVIATION...
ISSUED AT 521 PM CDT SUN MAY 24 2015

DIURNALLY ENHANCED CU MAY INCLUDE VICINITY TSRA...PARTICULARLY
WEST (KCGI/KPAH)..BUT AFTER LOSS OF FUEL...SHOULD SEE LOW VFR
CLOUDS PREVAIL MOSTLY. FURTHER UPSTREAM...AN AREA OF
SHOWERS/STORMS WILL MOVE IN LATER TONIGHT...HITTING KCGI/KPAH AND
THEN EXPANDING NORTHWARD AND EASTWARD WITH A CHANCE FOR KEVV/KOWB.
MVFR CIGS/VSBYS POSSIBLE WITH THIS PASSAGE...AFTER WHICH WE SHOULD
SEE GENERALLY IMPROVING CONDITIONS TMRW PM.

&&

.PAH WATCHES/WARNINGS/ADVISORIES...
IL...LAKE WIND ADVISORY UNTIL MIDNIGHT CDT TONIGHT FOR ILZ075>078-
     080>094.

MO...LAKE WIND ADVISORY UNTIL MIDNIGHT CDT TONIGHT FOR MOZ076-086-087-
     100-107>112-114.

IN...LAKE WIND ADVISORY UNTIL MIDNIGHT CDT TONIGHT FOR INZ081-082-
     085>088.

KY...LAKE WIND ADVISORY UNTIL MIDNIGHT CDT TONIGHT FOR KYZ001>022.

&&

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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
714 PM CDT SUN MAY 24 2015

MOZ086-100-107>110-250145-
BOLLINGER MO-STODDARD MO-BUTLER MO-WAYNE MO-RIPLEY MO-CARTER MO-
714 PM CDT SUN MAY 24 2015

...SIGNIFICANT WEATHER ADVISORY FOR RIPLEY...WAYNE...
CARTER...BOLLINGER...STODDARD AND BUTLER COUNTIES UNTIL 845 PM CDT...

AT 711 PM CDT...DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS OVER
NORTHEAST ARKANSAS...AROUND POCAHONTAS...MOVING NORTHEAST AT 40 MPH.

HALF INCH HAIL AND GUSTY WINDS TO 45 MPH WILL BE POSSIBLE WITH SOME
OF THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
POPLAR BLUFF...DEXTER...DONIPHAN...PIEDMONT...BERNIE...BLOOMFIELD...
MARBLE HILL...ADVANCE...VAN BUREN...GREENVILLE...SAM A BAKER STATE
PARK...WAPPAPELLO LAKE AREA...MOREHOUSE...PUXICO...NAYLOR...
NEELYVILLE...ESSEX...QULIN...BELL CITY AND ELLSINORE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FOR SOUTHEASTERN
MISSOURI.

LAT...LON 3709 9122 3710 9096 3705 9096 3705 9078
      3727 9073 3727 9055 3732 9055 3731 9015
      3760 9015 3760 8986 3713 8987 3713 8977
      3709 8979 3693 8969 3663 8970 3663 9015
      3650 9022 3650 9112 3682 9112 3683 9122
TIME...MOT...LOC 0011Z 204DEG 34KT 3635 9083