Area Forecast Discussion
Issued by NWS Paducah, KY

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000
FXUS63 KPAH 312238
AFDPAH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PADUCAH KY
538 PM CDT FRI JUL 31 2015

.UPDATE...
UPDATED AVIATION SECTION FOR 00Z TAF ISSUANCE

&&

.SHORT TERM...(THIS EVENING THROUGH SUNDAY)
ISSUED AT 250 PM CDT FRI JUL 31 2015

HIGH CONFIDENCE OF A RAINFREE SHORT TERM WITH SEASONAL SUMMER
HEAT THROUGH THE PERIOD. SURFACE HIGH PRESSURE CENTERED OVER THE
KS/MO BORDER REGION WILL SLOWLY SHIFT EAST INTO THE MS/OH RIVER
VALLEYS OVER THE NEXT 24 TO 36 HOURS. THIS SHOULD ENSURE A DRY
FORECAST THROUGH SAT. EVEN WHEN THE SFC HIGH SHIFTS EAST OF THE
REGION ON SUNDAY...RIDGING WEST OF THE HIGH INTO THE MID MS RIVER
VALLEY WILL KEEP RETURN FLOW...AND HENCE HUMIDITY LEVEL PRETTY
MUCH AT BAY. HIGHS GENERALLY LOWER PORTION OF THE 90S THIS WEEKEND
WILL BE FOLLOWED BY LOWS IN THE 60S.

.LONG TERM...(MONDAY THROUGH FRIDAY)
ISSUED AT 250 PM CDT FRI JUL 31 2015

SURFACE HIGH PRESSURE DRIFTING ACROSS THE PAH FORECAST AREA WILL
KEEP THE REGION DRY WITH SLIGHTLY ABOVE NORMAL TEMPERATURES MONDAY
INTO TUESDAY.

MODELS SHOW AN UPPER LEVEL TROF MOVING ACROSS THE MIDDLE MISSISSIPPI
AND LOWER OHIO VALLEYS TUESDAY NIGHT INTO WEDNESDAY NIGHT, WHICH
WILL GIVE US CHANCES OF SHOWERS AND THUNDERSTORMS.  THE
PRECIPITATION/CLOUD COVER ON WEDNESDAY SHOULD KEEP TEMPERATURES A
FEW DEGREES COOLER.  BY THURSDAY, LATEST ECMWF DIVERGES FROM THE GFS
AND CANADIAN, AND FROM ITS PREVIOUS RUN, AND NOW KEEPS MUCH OF THE
LATE WEEK FORECAST DRY.  GFS AND CANADIAN BRING A SURFACE FRONT A
LITTLE FARTHER SOUTH INTO THE AREA, WHICH WOULD KEEP SCATTERED
SHOWERS AND STORMS IN THE FORECAST, ESPECIALLY THURSDAY NIGHT INTO
FRIDAY.  KEPT PRECIPITATION CHANCES IN THE SLIGHT CHANCE TO CHANCE
CATEGORY FOR NOW UNTIL MODELS SHOW BETTER AGREEMENT ON
TIMING/FRONTAL PLACEMENT.

&&

.AVIATION...
ISSUED AT 538 PM CDT FRI JUL 31 2015

HIGH PRESSURE WILL REMAIN OVER OUR REGION THROUGH
SATURDAY...BRINGING MAINLY CLEAR SKIES AND LIGHT WINDS. DUE TO THE
LIGHT WINDS AND HIGH SOIL MOISTURE...SOME FOG CANNOT BE RULED OUT
AROUND SUNRISE. ANY FOG WOULD BE VERY SHALLOW...INDUCED BY THE MOIST
GROUND. WILL ADD MENTION OF MIFG /SHALLOW GROUND FOG/ AT THE KCGI
AND KPAH SITES AROUND SUNRISE. THE KEVV/KOWB AREA SHOULD HAVE A
LITTLE MORE WIND TO INHIBIT FOG. OTHER THAN A FEW HIGH-BASED CUMULUS
CLOUDS IN THE MIDDAY AND AFTERNOON HOURS...CLEAR SKIES WILL CONTINUE.

&&

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

$$

SHORT TERM...GM
LONG TERM...RST
AVIATION...MY



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