591
FXUS63 KIWX 061808
AFDIWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
208 PM EDT TUE OCT 6 2026
KEY MESSAGES
- DRY CONDITIONS ARE EXPECTED THROUGH THIS WORK WEEK.
- HIGH TEMPERATURES WILL ALTERNATE BETWEEN ABOVE AND BELOW
NORMAL. ON WEDNESDAY, TEMPERATURES SOUTH OF US 24 MAY REACH
THE LOW-80S.
- THE NEXT OPPORTUNITY FOR RAIN IS LATE THIS WEEKEND.
DISCUSSION
ISSUED AT 200 PM EDT TUE OCT 6 2026
DRY WEATHER PERSISTS THROUGH THE START OF THE WEEKEND, YET AUTUMN
TEMPERATURES TRANSITION TO LATE-SUMMER WARMTH AT TIMES. HIGH
PRESSURE IS NOW CENTERED OVER THE STEEL CITY (PIT) PERMITTING MILD
SOUTHERLY FLOW TO EASE IN. ALOFT, ON WATER VAPOR, AN UPPER-LEVEL
RIDGE OVER CA AND WA HAS BUCKLED THE JET STREAM THROUGH THE NORTHERN
PLAINS AND UPPER MIDWEST. THIS ALLOWS A PROGRESSIVE WEATHER PATTERN
TO TAKE SHAPE THIS WEEK AND ULTIMATELY RESULTS IN TUG-OF-WAR WITH
HIGH TEMPERATURES. A FEW SPOTS SOUTH OF US 24 MAY SEE HIGHS IN THE
LOW-80S WEDNESDAY AFTERNOON, YET WE'LL COOL BACK DOWN ABOUT 8 TO 10
DEGREES ON THURSDAY, ONLY TO WARM BACK UP TOWARD 80 DEGREES
SATURDAY.
ASIDE FROM TEMPERATURES, EYES ARE ALSO ON THE WESTERN GULF WHERE THE
NATIONAL HURRICANE CENTER IS MONITORING AN AREA FOR TROPICAL CYCLONE
DEVELOPMENT. GLOBAL MODEL GUIDANCE SUGGESTS REMNANTS FROM THIS
EMERGING SYSTEM COULD ARRIVE TO AT LEAST THE SOUTHEAST PORTIONS OF
THE FORECAST AREA LATE THIS WEEKEND. NOTHING TO BE ALARMED ABOUT AT
THIS DISTANCE WITH AN IN-HOUSE BLEND OF GLOBAL MODELS SUGGESTING
ABOUT A 30-40% CHANCE OF MEASURABLE RAINFALL. WITH A STRONG RIDGE
BUILDING OVER THE CENTRAL US, A WESTWARD DRIFT OF THE LINGERING RAIN
SHIELD APPEARS UNLIKELY. TO THE NORTH, A FRONTAL BOUNDARY PUSHING
INTO THE NORTHERN GREAT LAKES THIS WEEKEND WILL PROVIDE FURTHER
STEERING INFLUENCE OF ANY TROPICAL REMAINS. INCOMING RAIN WOULD
PROVE INCONVENIENT FOR HARVEST ACTIVITIES.
AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/
ISSUED AT 1208 PM EDT TUE OCT 6 2026
HIGH PRESSURE OVERHEAD CONTINUES TO PROVIDE TRANQUIL AND DRY
CONDITIONS. EXPECT VFR CEILINGS THROUGH THE TAF PERIOD (WITH
VERY FEW CLOUDS AT ALL) WITH SOUTHWEST WINDS BETWEEN 5-10 KNOTS.
IWX WATCHES/WARNINGS/ADVISORIES
IN...NONE.
OH...NONE.
MI...NONE.
MARINE...NONE.
DISCUSSION...BROWN
AVIATION...JOHNSON
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