686
FXUS63 KIWX 190706
AFDIWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
306 AM EDT MON OCT 19 2026
KEY MESSAGES
- DRY AND PLEASANT WEATHER PERSISTS THROUGH THE ENTIRE WEEK WITH
HIGHS EITHER SIDE OF 70, LOWS IN THE 40S, AND NO RAIN IN
SIGHT.
DISCUSSION
ISSUED AT 304 AM EDT MON OCT 19 2026
DEW POINTS WERE IN THE 20S AND 30S THIS PAST WEEKEND, BUT WILL BE
RISING THROUGH THE 40S TODAY THROUGH WEDNESDAY. THIS IS AS
SOUTHWESTERLY FLOW SUNDAY AND TODAY PROMOTE MOISTENING. VEERING
WINDS TO EASTERLY OCCURS TUESDAY AS A BACKDOOR COLD FRONT APPROACHES
AND WASHES OUT. AS LONG AS EAST WINDS CONTINUE TUESDAY NIGHT/WED AM
AND REMAIN LIGHT, FOG COULD OCCUR AS MARINE AIR IS ADVECTED
WESTWARD. A COLD FRONT APPROACHES FROM THE NORTHWEST WEDNESDAY AND
MAY DISRUPT FOG FORMATION IF CLOUDS GET TO THOSE AREAS EARLY ENOUGH.
THIS STUDY OF MOISTURE CONTENT ALSO BEGS THE QUESTION ABOUT FIRE
WEATHER POTENTIAL. WELL, WINDS ARE EXPECTED TO REMAIN LIGHT ENOUGH
TO REMOVE FIRE WEATHER CONCERN AND LIMIT THAT TO GRASS FIRES AT
BEST. GIVEN THIS MENTION OF DRY WEATHER, RAIN CHANCES WILL CONTINUE
TO BE LIMITED TO LESS THAN WETTING THROUGH MOST OF SUNDAY. A COLD
FRONT APPROACHING LATE NEXT WEEKEND TO EARLY THE FOLLOWING WEEK (7-8
DAYS AWAY) WOULD BE THE NEXT CHANCE TO SEE RAIN, BUT IT'S A SMALL
CHANCE.
AFTER STARTING THIS MORNING WITH A CHANCE FOR FROST, ATTENTION TURNS
TO TONIGHT TO SEE IF WE HAVE ANOTHER CHANCE FOR FROST. THIS IS AS
LONG AS THE GROWING SEASON REMAINS INTACT. GIVEN THAT DEW POINTS ARE
EXPECTED TO WARM, LOW TEMPS WILL HAVE MORE OF A FLOOR TO PREVENT
COOLING. ADDITIONALLY, A COLD FRONT BRINGS HIGH CLOUDS TO THE AREA
MONDAY NIGHT LIMITING RADIATIONAL COOLING. GIVEN THESE FACTORS, HAVE
PASSED ON ISSUING ANYTHING FOR FROST MONDAY NIGHT. LOWS STAY MORE IN
THE 40S FOR TUESDAY NIGHT AND BEYOND, MEANING OUR NEXT FROST CHANCE
WON'T BE FOR A WHILE NOW.
AVIATION /06Z TAFS THROUGH 06Z TUESDAY/
ISSUED AT 1206 AM EDT MON OCT 19 2026
VFR WITH MAINLY CLEAR SKIES AND LIGHT WINDS THROUGH THE TAF
CYCLE AND BEYOND.
IWX WATCHES/WARNINGS/ADVISORIES
IN...FROST ADVISORY UNTIL 9 AM EDT /8 AM CDT/ THIS MORNING FOR
INZ005>009-012>015-017-018-020-022>027-032>034-103-104-
116-203-204-216.
OH...FROST ADVISORY UNTIL 9 AM EDT THIS MORNING FOR OHZ001-002-004-
005-015-016-024-025.
MI...NONE.
MARINE...NONE.
DISCUSSION...ROLLER
AVIATION...STEINWEDEL
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