Area Forecast Discussion
Issued by NWS Indianapolis, IN

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000
FXUS63 KIND 230139
AFDIND

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
939 PM EDT WED OCT 22 2014

.UPDATE...
THE NEAR TERM SECTION HAS BEEN UPDATED BELOW.

&&

.SYNOPSIS...
ISSUED AT 259 PM EDT WED OCT 22 2014

A WEAK SYSTEM COULD BRING A FEW SHOWERS TO PARTS OF CENTRAL INDIANA
THURSDAY NIGHT. A STRONGER SYSTEM WILL BRING BETTER CHANCES FOR RAIN
AROUND TUESDAY OF NEXT WEEK. OTHERWISE LOOK FOR DRY AND NEAR AVERAGE
TO ABOVE AVERAGE TEMPERATURES FOR MUCH OF THE NEXT 7 DAYS.

&&

.NEAR TERM /REST OF TONIGHT/...

ISSUED AT 936 PM EDT WED OCT 22 2014

UPDATE...
CURRENT IR SATELLITE CONTINUES TO SHOW HIGH PRESSURE OVER THE
REGION...SO NO CHANGES TO FORECAST. UPDATED GRIDS HAVE BEEN SENT.

PREVIOUS DISCUSSION...
WITH SURFACE HIGH PRESSURE MOVING ACROSS THE AREA TONIGHT AND
RIDGING BUILDING IN ALOFT...EXPECT CLEAR TO MOSTLY CLEAR CONDITIONS.
WINDS WILL BE LIGHT WITH THE HIGH IN THE VICINITY.

GIVEN THESE CONDITIONS WENT WITH LOW TEMPERATURES NEAR THE COLDER OF
THE MOS NUMBERS...WHICH PUTS LOWS IN THE MID 30S MOST LOCATIONS.
THIS WILL ALLOW AREAS OF FROST TO FORM OVERNIGHT. WILL GO WITH A
FROST ADVISORY ALL AREAS.

THERE IS ALSO A POTENTIAL FOR SOME GROUND FOG NEAR SUNRISE.


&&

.SHORT TERM /THURSDAY THROUGH SATURDAY/...

ISSUED AT 259 PM EDT WED OCT 22 2014

FOCUS IS ON ANY CHANCES FOR RAIN DURING THE PERIOD. MODELS ARE CLOSE
ENOUGH THAT A BLEND WAS USED.

THURSDAY WILL START OFF SUNNY WITH THE RIDGE OVERHEAD...BUT AN UPPER
TROUGH WILL QUICKLY APPROACH THE AREA DURING THE DAY. THIS WILL LEAD
TO AN INCREASE IN MID AND HIGH CLOUDS DURING THE AFTERNOON. NOT SURE
HOW THICK THESE WILL BE AND HOW THEY WILL IMPACT THE PARTIAL SOLAR
ECLIPSE NEAR SUNSET.

THE UPPER TROUGH WILL MOVE ACROSS THE AREA THURSDAY NIGHT. THERE IS
SOME WEAK ISENTROPIC LIFT WITH THIS SYSTEM...BUT MOISTURE IS LIMITED
WITH THIS SYSTEM...ESPECIALLY IN THE LOWER LEVELS. THUS FEEL CHANCES
FOR MEASURABLE RAIN ARE PRETTY LOW.

WENT SLIGHT CHANCE POPS ACROSS ROUGHLY THE NORTHERN HALF OF THE AREA
THURSDAY NIGHT...WITH SPRINKLES MENTIONED FARTHER SOUTH. WENT DRY
FAR SOUTH WITH THAT AREA BEING PRETTY FAR FROM MOST FORCING.

AREA WILL REMAIN IN NORTHWEST UPPER FLOW FRIDAY INTO SATURDAY.
FRIDAY SHOULD BE DRY AS CENTRAL INDIANA REMAINS IN BETWEEN
SYSTEMS...BUT A FRONT WILL MOVE INTO THE AREA ON FRIDAY NIGHT INTO
SATURDAY. ONCE AGAIN MOISTURE IS PRETTY LIMITED.

WHILE CANNOT RULE OUT SOME SPRINKLES FRIDAY NIGHT INTO EARLY
SATURDAY...FEEL THAT MOISTURE IS LIMITED ENOUGH TO KEEP THE FORECAST
DRY.

LOOKING AT TEMPERATURES...A BLEND OF MOS LOOKS GOOD FOR HIGHS ON
THURSDAY WITH THE INCREASING CLOUDS. ON FRIDAY MAV MOS JUST LOOKS
TOO WARM GIVEN SOME CLOUD COVER. WENT CLOSER TO MET MOS. OTHERWISE
GENERALLY STUCK WITH A MODEL BLEND.

&&

.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...

ISSUED AT 259 PM EDT WED OCT 22 2014

PLEASANT FALL WEATHER CONTINUES INTO EARLY WEEK AS SURFACE HIGH
PRESSURE REMAINS THE DOMINANT WEATHER FEATURE ACROSS THE OHIO
VALLEY. EXPECT DRY PLEASANT DAYS AND COOL NIGHTS THROUGH MONDAY. AS
THE HIGH SHIFTS EAST...SURFACE FLOW WILL VEER AROUND TO SOUTHERLY
AND DRAW MOISTURE NORTH INTO THE REGION BY TUESDAY AHEAD OF LOW
PRESSURE AND AN ASSOCIATED COLD FRONT LIFTING OUT OF THE CENTRAL
PLAINS. THE FRONT WILL MOVE THROUGH CENTRAL INDIANA TUESDAY AND
TUESDAY NIGHT...BRINGING THE ONLY CHANCE FOR RAINFALL IN THE
EXTENDED PERIOD. MODEL SOUNDINGS INDICATE SOME ELEVATED INSTABILITY
DEVELOPING AHEAD OF THE FRONT SO DO EXPECT SOME EMBEDDED THUNDER.

HIGHS WILL BE IN THE 60S THROUGH TUESDAY...WITH 70S IN SOUTHERN
INDIANA POSSIBLE ON MONDAY IN WARM ADVECTION REGIME AHEAD OF THE
FRONT. HIGH PRESSURE REESTABLISHES BEHIND THE BOUNDARY FOR MIDWEEK
BUT WITH PREDOMINANT ZONAL FLOW ALOFT...ONLY EXPECTING TEMPS TO FALL
BACK INTO THE UPPER 50S WEDNESDAY.

SOME GROWING HINTS BEYOND THE EXTENDED PERIOD OF A MORE UNSETTLED
PATTERN ESTABLISHING WITH THE POTENTIAL FOR A COLDER BLAST OF AIR
INTO THE REGION FOR THE END OF NEXT WEEK. WILL CONTINUE TO MONITOR
IN THE DAYS TO COME.

&&

.AVIATION /DISCUSSION FOR 230000Z TAF ISSUANCE/...
ISSUED AT 638 PM EDT WED OCT 22 2014

VISIBILITY RESTRICTIONS POSSIBLE WITH SHALLOW GROUND FOG NEAR
DAYBREAK...OTHERWISE VFR CONDITIONS EXPECTED.

CLEAR SKIES ACROSS MUCH OF THE HOOSIER STATE THIS EVENING WITH A
STRONG HIGH PRESSURE RIDGE EXPANDING ACROSS THE REGION. EXPECT
CLEAR SKIES TO REMAIN OVERNIGHT WITH LIGHT WINDS AS MODEL
SOUNDINGS AND RH PROGS INDICATE DEEP SUBSIDENCE ADVECTING ACROSS
THE AREA. DO SEE POTENTIAL FOR SHALLOW GROUND FOG TO DEVELOP
AROUND DAYBREAK AS THIN LAYER OF MOISTURE LINGERS NEAR GROUND
LEVEL.

WINDS WILL VEER TO S/SW ON THURSDAY AS THE CENTER OF THE RIDGE
SHIFTS EAST. WILL SEE SLOW INCREASE IN HIGH LEVEL CLOUDS AHEAD OF
A WEAKENING UPPER WAVE WITH POSSIBLY SOME THICKER MID LEVEL
CLOUDS BY EARLY THURSDAY EVENING.


&&

.IND WATCHES/WARNINGS/ADVISORIES...
FROST ADVISORY FROM 4 AM TO 9 AM EDT THURSDAY FOR INZ021-028>031-
035>049-051>057-060>065-067>072.

&&

$$

SYNOPSIS...50
NEAR TERM...50/TDUD
SHORT TERM...50
LONG TERM....RYAN
AVIATION...RYAN

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