093
FXUS63 KILX 251702
AFDILX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
1202 PM CDT SUN OCT 25 2026
KEY MESSAGES
- ABOVE-NORMAL WARMTH AND DRY CONDITIONS WILL PERSIST ACROSS
CENTRAL ILLINOIS THROUGH FRIDAY, WITH AFTERNOON TEMPERATURES
IN THE 70S TO NEAR 80 DEGREES SOLIDIFYING ONE OF THE WARMEST
OCTOBERS ON RECORD.
- ISOLATED, LIGHT SHOWERS CARRY A LOW CHANCE (10% TO 30%)
TUESDAY NIGHT INTO WEDNESDAY MORNING, PRIMARILY NEAR AND WEST
OF INTERSTATE 55, BUT OFFERING NO SIGNIFICANT RELIEF TO
ONGOING DRY CONDITIONS.
- A WEATHER PATTERN SHIFT IS FAVORED BY NEXT WEEKEND AND EARLY
NOVEMBER, BRINGING HIGHER CONFIDENCE IN COOLER, BREEZIER, AND
WETTER WEATHER.
DISCUSSION
ISSUED AT 1200 PM CDT SUN OCT 25 2026
THERE IS A GROWING SENSE OF COMPLACENCY AS CENTRAL ILLINOIS
REMAINS UNDER THE INFLUENCE OF ATMOSPHERIC BLOCKING. OVER THE
LAST 7 TO 10 DAYS, THIS PERSISTENT PATTERN HAS CONTINUOUSLY
STEERED FRONTAL SYSTEMS AWAY FROM THE AREA. AS A RESULT, THE
REGION IS UNDERGOING ONE OF ITS WARMEST OCTOBERS ON RECORD, WITH
PEORIA, LINCOLN, AND SPRINGFIELD CURRENTLY RANKING 3RD, 5TH,
AND 10TH WARMEST, RESPECTIVELY.
IT WILL BE MORE OF THE SAME THROUGH THE FRONT HALF OF THIS
WEEK. THE WESTERN TROUGH IS FORECAST TO OPEN AND LIFT ACROSS THE
ROCKIES TONIGHT, THEN PIVOT ACROSS THE NORTHERN PLAINS BY
MONDAY NIGHT. WHILE THIS TROUGH WILL BE EFFECTIVE IN
DE-AMPLIFYING OR FLATTENING THE UPPER-LEVEL BLOCKING PATTERN,
IT WILL NOT BE QUITE ENOUGH TO BREAK IT DOWN COMPLETELY. THE
MAIN SURFACE FRONT WILL REMAIN DISPLACED TO OUR NORTH, AND THE
NET EFFECT WILL BE ANOTHER WARM AND DRY DAY ON MONDAY WITH HIGHS
WELL INTO THE 70S DESPITE INCREASING HIGH CLOUDS.
AN ANCILLARY SHORTWAVE TROUGH MOVES OUT OF THE SOUTHERN PLAINS
TOWARD THE OZARKS ON TUESDAY. ALTHOUGH IT DELIVERS MINOR
SYNOPTIC LIFT ALONG WITH A SLIGHT SURGE OF GULF MOISTURE TO
CENTRAL ILLINOIS TUESDAY NIGHT INTO WEDNESDAY MORNING, THE
REGION STAYS POSITIONED ON THE WESTERN EDGE OF DRY SURFACE HIGH
PRESSURE. HIGH-BASED, ISOLATED SHOWERS REMAIN POSSIBLE NEAR AND
WEST OF INTERSTATE 55 AS THE DISTURBANCE PASSES, THOUGH BOTH
BLENDED (NBM) AND GLOBAL ENSEMBLE (LREF MEAN) GUIDANCE MAINTAIN
LOW PROBABILITIES (10%-30%). ANY LIGHT PRECIPITATION THAT DOES
LAND WILL FAIL TO MEANINGFULLY IMPACT THE ONGOING EXTENDED DRY
STRETCH.
FOLLOWING THE MIDWEEK DISTURBANCE, UPPER-LEVEL RIDGING BUILDS
BACK IN, ENSURING DRY WEATHER AND UNSEASONABLE WARMTH THROUGH
FRIDAY AFTERNOON. BECAUSE THE PRIMARY SURFACE BOUNDARY REMAINS
ANCHORED TO THE NORTH, DAILY HIGH TEMPERATURES WILL RISE INTO
THE UPPER 70S TO NEAR 80 DEGREES. THIS CONTINUED THERMAL RIDGE
WILL COMFORTABLY LOCK IN WHAT STANDS AS ONE OF THE WARMEST
OCTOBERS ON RECORD.
GUIDANCE INDICATES A CLEAR, LARGE-SCALE PATTERN SHIFT TAKING
SHAPE HEADING INTO NEXT WEEKEND AND THE START OF NOVEMBER. EVEN
WITH SPATIAL AND TEMPORAL VARIANCES AMONG SYNOPTIC FEATURES,
CONFIDENCE IS HIGH THAT UPPER-LEVEL FLOW ACROSS THE CENTRAL U.S.
WILL BECOME SIGNIFICANTLY FASTER AND MORE PROGRESSIVE,
TRANSITIONING THE AREA TOWARD COOLER, WETTER, AND WINDIER
CONDITIONS.
AVIATION /18Z TAFS THROUGH 18Z MONDAY/
ISSUED AT 1146 AM CDT SUN OCT 25 2026
VFR CONDITIONS WILL PERSIST THROUGH THIS TAF CYCLE AS THE
REGIONAL TERMINALS MAINTAIN MOSTLY CLEAR SKIES AND LIGHT WINDS
DUE TO A RIDGE OF HIGH PRESSURE ENVELOPING MUCH OF THE AREA.
ILX WATCHES/WARNINGS/ADVISORIES
NONE.
KEY MESSAGES...MJA
DISCUSSION...MJA
AVIATION...MJA
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page