992
FXUS63 KIND 271850
AFDIND
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
250 PM EDT TUE OCT 27 2026
KEY MESSAGES
- DRY AND UNSEASONABLY HIGH TEMPERATURES TO CONTINUE THROUGH FRIDAY,
AFTERNOON HIGHS IN THE 70S
- PATCHY FOG MAY OCCUR IN LOW LYING AREAS TONIGHT INTO TOMORROW
MORNING.
DISCUSSION (THIS EVENING THROUGH TUESDAY)
ISSUED AT 249 PM EDT TUE OCT 27 2026
THE OHIO VALLEY STILL REMAINS BENEATH THE INFLUENCE OF A STRONG AREA
OF HIGH PRESSURE OVER THE SE CONUS. THAT SAID, TROUGHING AND
CONTINUED CVA OVER THE UPPER MISSISSIPPI VALLY THIS WEEK WILL WORK
TO BREAK DOWN THE RIDGE RESULTING IN A SLOWLY PROGRESSING LONG WAVE
PATTERN THROUGHOUT THE LONG TERM. IN THE MEANTIME, BROAD SUBSIDENCE
AND SURFACE HIGH PRESSURE TO THE EAST WILL KEEP CONDITIONS QUIET
THROUGH THE WORK WEEK.
WINDS WILL REMAIN WEAK TODAY, BUT STARTING TOMORROW, SLIGHT
INCREASES IN THE PRESSURE GRADIENT DUE TO PRESSURE DEPLETION OVER
THE PLAINS AND UPPER MIDWEST WILL ALLOW FOR A MORE CONSISTENT LIGHT
BREEZE OUT OF THE S/SW. THIS SHOULD START TO MITIGATE THE DIURNAL
FOG DEVELOPMENT WE'VE BEEN EXPERIENCING OVER THE LAST FEW NIGHTS.
ON THURSDAY, THERE SHOULD BE ENOUGH MID TO LOW LEVEL FLOW AND AN
INCREASE IN PBL MIXING FOR OCCASIONAL GUSTS OF 13-17KT DURING THE
AFTERNOON. THIS CONSISTENT SW FLOW WILL ALSO PROVIDE A SLIGHT
WARMING TREND WITH AFTERNOON HIGHS APPROACHING 80 BY THURSDAY.
ENSEMBLE GUIDANCE IS STARTING TO PICK UP ON THE DEVELOPMENT OF A
MODEST 850-700MB LOW LATE FRIDAY THROUGH SUNDAY PASSING THROUGH THE
OHIO VALLEY LATE SATURDAY INTO SUNDAY. WHILE UNCERTAINTY ON
MAGNITUDE AND PLACEMENT IS STILL HIGH, THERE IS ENOUGH MID LEVEL
MOISTURE RETURN TO WARRANT INCREASE POPS FOR SATURDAY NIGHT. CANNOT
RULE OUT RAIN FOR SATURDAY EVENING, BUT THERE SHOULD BE ENOUGH
ANTECEDENT DRY AIR TO EVAPORATE INITIAL RAINFALL ATTEMPTS HOLDING OFF
MEASURABLE RAIN UNTIL WELL INTO SATURDAY NIGHT.
AS THE RIDGE BREAKS DOWN LATE THIS WEEK THROUGH THE WEEKEND, A MORE
PROGRESSIVE LONGWAVE PATTERN IS EXPECTED TO DEVELOP. THIS WILL
LIKELY PLACE DEEPER TROUGHING OVER THE CENTRAL CONUS BY EARLY NEXT
WEEK WITH INCREASED CHANCES FOR PRECIPITATION AND LARGER TEMPERATURE
FLUCTUATIONS LIKELY FOR CENTRAL INDIANA TO BEGIN NOVEMBER.
AVIATION (18Z TAF ISSUANCE)
ISSUED AT 106 PM EDT TUE OCT 27 2026
IMPACTS:
- PATCHY MVFR FOG TOMORROW MORNING AT KLAF
DISCUSSION:
SURFACE HIGH PRESSURE REMAINS ACROSS THE REGION WITH WEAK UPPER
WAVES PASSING TO THE WEST. THIS IS RESULTING IN VFR CONDITIONS WITH
SCT TO BKN CIRRUS THROUGHOUT THE TAF PERIOD. DUE TO CALM WINDS
OVERNIGHT, PATCHY MVFR FOG IS POSSIBLE AT KLAF AND KHUF TOMORROW
MORNING, BUT CONFIDENCE IN DURATION AND COVERAGE IS LOW AT THIS
TIME.
WINDS TOMORROW WILL INCREASE SLIGHTLY OUT OF THE SW. OCCASIONAL
GUSTS TO 15KT CANNOT BE RULED OUT, BUT LOOK SPORATIC ENOUGH TO AVOID
INCLUSION.
IND WATCHES/WARNINGS/ADVISORIES
NONE.
AVIATION...UPDIKE
DISCUSSION...UPDIKE
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