327
FXUS63 KIWX 250535
AFDIWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
135 AM EDT SUN OCT 25 2026
KEY MESSAGES
- PLEASANT WEATHER PERSISTS THROUGH THE UPCOMING WEEK WITH
HIGHS AROUND 70, LOWS IN THE 40S, AND NO RAIN EXPECTED.
- AREAS OF FOG POSSIBLE EARLY MONDAY MORNING ALONG THE I-69
CORRIDOR AND INTO NORTHWEST OHIO.
DISCUSSION
ISSUED AT 155 PM EDT SAT OCT 24 2026
STRONG UPPER-LEVEL RIDGING PERSISTS THIS AFTERNOON WITH SURFACE
HIGH PRESSURED NOTED OVER THE NORTHEAST. AS A RESULT, STATUS-
QUO ON THE FORECAST OVERALL INCLUDING CRUISE-CONTROL
TEMPERATURES WITHIN A COUPLE OF DEGREES THESE NEXT TWO DAYS.
WE'LL BE MONITORING FOR FOG TONIGHT INTO EARLY MONDAY MORNING.
GUIDANCE APPEARS MOST KEEN ON THE I-69 CORRIDOR INCLUDING
NORTHWEST OHIO, YET LIGHT SURFACE WIND FROM THE SOUTH MAY LIMIT
ANY LAKE ERIE MOISTURE ADVECTION, WHILE RADIATIONAL COOLING
APPEARS TO BE SUFFICIENT.
LOW PRESSURE OVER MANITOBA THIS AFTERNOON FEATURES A COLD FRONT
DRAPED ACROSS THE CENTRAL AND NORTHERN PLAINS. THIS FRONT ATTEMPTS TO
SEEP OVER OUR AREA TUESDAY AS IT GETS HUNG-UP ATOP OUR PERSISTENT
UPPER-LEVEL RIDGE. THIS WILL KNOCK TEMPERATURES DOWN A FEW DEGREES
TUESDAY, YET TEMPERATURES WILL STILL BE WELL ABOVE NORMAL (NORMAL
HIGH/LOW 60/40). OTHERWISE, REMAINING VERY MILD AND DRY THIS WEEK
WITH OUR NEXT CHANCE FOR ANY RAIN NOT ARRIVING UNTIL PERHAPS
THURSDAY AFTERNOON (20% CHANCE) AS ANOTHER FRONT ATTEMPTS TO CROSS
OUR RIDGE. THE ABUNDANCE OF DRY AIR AND OVERALL ABSENCE OF FORCING
LEAVES ME UNIMPRESSED. INSTEAD, LATE NEXT WEEKEND INTO EARLY
NOVEMBER LOOKS TO BE THE BETTER OPPORTUNITY TO END OUR DRY SPELL
WITH LOW PRESSURE EMERGING FROM THE SOUTHERN/CENTRAL PLAINS.
AVIATION /06Z TAFS THROUGH 06Z MONDAY/
ISSUED AT 135 AM EDT SUN OCT 25 2026
THE WESTERN PERIPHERY OF AN EXPANSIVE LOW LEVEL ANTICYCLONE
ACROSS THE EASTERN CONUS WILL MAINTAIN ITS INFLUENCE ACROSS
NORTHERN INDIANA TODAY. WEAK LOW LEVEL FLOW HAS VEERED A BIT
OVER PAST 12 HOURS WITH A SLOW EASTWARD MIGRATION TO AN UPPER
RIDGE AXIS ACROSS CENTRAL CONUS, AND THIS WILL RESULT IN
CONTINUED SUBTLE VEERING THROUGH THIS PERIOD. IN THE MEANTIME,
STAGNANT SYNOPTIC CONDITIONS WILL LEAD TO ANOTHER MORNING OF FOG
POTENTIAL. VEERING OF THE FLOW WILL RESULT IN THIS THREAT NOT
BEING AS WIDESPREAD AS YESTERDAY MORNING, BUT TEMPO VSBYS UNDER
1 MILE AT KFWA IN THE 08Z TO 12Z PERIOD STILL SEEMS REASONABLE.
FOG IS EXPECTED TO REMAIN MORE PATCHY IN NATURE IN KSBN VICINITY
WITH LOWER CONFIDENCE AT THIS TERMINAL. WEAK SOUTH FLOW WILL
DEVELOP TODAY WITH VFR CONDITIONS AFTER 14Z ONCE ANY AM FOG
DISSIPATES. THE POTENTIAL OF FOG APPEARS SOMEWHAT LOWER TONIGHT
WITH CONTINUED VEERING OF LOW LEVEL WIND PROFILES AND LESS
INFLUENCE FROM EASTERN GREAT LAKES.
IWX WATCHES/WARNINGS/ADVISORIES
IN...NONE.
OH...NONE.
MI...NONE.
MARINE...NONE.
DISCUSSION...MARSILI
AVIATION...ROLLER
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