573
FXUS63 KILX 050705
AFDILX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
205 AM CDT MON OCT 5 2026
KEY MESSAGES
* SEASONABLE AND QUIET WEATHER CONTINUES TODAY, WITH HIGHS
TOPPING OUT IN THE LOW TO MID 70S. A WARMING TREND TUESDAY AND
WEDNESDAY WILL BRING HIGHS BACK INTO THE UPPER 70S TO LOW 80S
BY MIDWEEK.
* PROLONGED PERIOD OF DRY CONDITIONS WILL WORSEN FINE FUEL
DRYNESS, MAINTAINING ELEVATED FIELD FIRE CONCERNS DURING FALL
HARVEST OPERATIONS.
DISCUSSION
ISSUED AT 157 AM CDT MON OCT 5 2026
TODAY THROUGH WEDNESDAY...
EARLY MORNING SURFACE ANALYSIS DEPICTS A BROAD SURFACE RIDGE
AXIS STRETCHING FROM MANITOBA SOUTHWARD ACROSS THE UPPER MIDWEST
INTO THE LOWER MISSOURI VALLEY. THIS RIDGE AXIS WILL GRADUALLY
MIGRATE EASTWARD ACROSS THE MIDWEST TODAY. UNDER WEAK NORTHWEST
FLOW ALOFT, MODEST COLD AIR ADVECTION WILL TRIM TEMPERATURES
BACK NEAR EARLY-OCTOBER CLIMATOLOGICAL NORMS, YIELDING PLEASANT
AFTERNOON HIGHS IN THE LOW TO MID 70S ALONGSIDE LIGHT WINDS.
AS THE SURFACE HIGH SLIDES EAST TOWARD THE MID-ATLANTIC COAST
BY TUESDAY NIGHT INTO WEDNESDAY MORNING, RETURN LOW-LEVEL
SOUTHERLY FLOW WILL RE-ESTABLISH ACROSS CENTRAL AND SOUTHEAST
ILLINOIS. THIS SHIFT WILL INITIATE A WARMING TREND, PUSHING
AFTERNOON HIGHS INTO THE MID-TO-UPPER 70S ON TUESDAY AND THE
UPPER 70S TO LOWER 80S BY WEDNESDAY AFTERNOON.
LATE WEEK THROUGH WEEKEND...
AN EXTENDED STRETCH OF TRANQUIL, UNSEASONABLY WARM WEATHER IS
EXPECTED TO PERSIST THROUGH LATE WEEK AND INTO THE UPCOMING
WEEKEND UNDER THE INFLUENCE OF A BROAD UPPER-LEVEL RIDGE AND
SPLIT-FLOW PATTERN ALOFT, KEEPING THE BEST PRECIP CHANCES NORTH
OR SOUTH OF CENTRAL ILLINOIS. THE NEXT POTENTIAL OPPORTUNITY FOR
PRECIPITATION ARRIVES LATE IN THE WEEKEND INTO EARLY NEXT WEEK,
AS MODEL GUIDANCE SUGGESTS TROPICAL REMNANTS MAY LIFT
NORTHEASTWARD ACROSS THE TENNESSEE VALLEY. WHILE CURRENT
PROBABILISTIC GUIDANCE CONTINUES TO FAVOR PRECIPITATION STAYING
PRIMARILY SOUTH AND EAST OF OUR FORECAST AREA, A SLIGHT CHANCE
(15%) REMAINS FOR PRECIPITATION CLIPPING PORTIONS OF SOUTHEAST
ILLINOIS. TRENDS WILL CONTINUE TO BE MONITORED CLOSELY.
FIRE WEATHER CONSIDERATIONS...
WHILE LIGHT AMBIENT WINDS THROUGH THE FORECAST PERIOD WILL
LIMIT WIDESPREAD FIRE WEATHER CONCERNS, PERSISTENT DRY WEATHER
AND INCREASINGLY LOW AFTERNOON RELATIVE HUMIDITY VALUES
(PARTICULARLY SOUTH OF I-72) WILL LEAD TO PROGRESSIVE DRYING OF
AGRICULTURAL FINE FUELS. WITH FALL HARVEST OPERATIONS IN FULL
SWING, ADDITIONAL AWARENESS IS NEEDED AND EXTRA CAUTION SHOULD
BE USED TO PREVENT AGRICULTURAL EQUIPMENT FROM SPARKING FIRES IN
DRY CROP FIELDS.
AVIATION /06Z TAFS THROUGH 06Z TUESDAY/
ISSUED AT 1203 AM CDT MON OCT 5 2026
CLEAR SKIES EXPECTED THE NEXT 24 HOURS AS LARGE HIGH PRESSURE
OVER THE CENTRAL AND NORTHERN PLAINS DRIFTS EASTWARD OVER THE
GREAT LAKES BY MONDAY EVENING AND RIDGES INTO IL. NORTH WINDS
3-8 KTS OVERNIGHT TO VEER NORTHEAST ON MONDAY, AND EAST TO SE
DURING MONDAY EVENING. PATCHY SHALLOW GROUND FOG MAY DEVELOP
LATE TONIGHT/EARLY MON MORNING BUT CONFINED TO RIVERS AND
WATERWAYS AND SHOULD NOT AFFECT CENTRAL IL AIRPORTS.
ILX WATCHES/WARNINGS/ADVISORIES
NONE.
KEY MESSAGES...DEUBELBEISS
DISCUSSION...DEUBELBEISS
AVIATION...07
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