112
FXUS63 KILX 281943
AFDILX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
243 PM CDT THU MAY 28 2026
KEY MESSAGES
- NO MAJOR WEATHER SYSTEMS ARE EXPECTED TO AFFECT CENTRAL AND
SOUTHEAST ILLINOIS THROUGH AT LEAST THE MIDDLE OF NEXT WEEK.
THEREFORE THE SEVERE WEATHER RISK WILL REMAIN VERY LOW (LESS
THAN A 5% CHANCE) THROUGH NEXT THURSDAY.
DISCUSSION
ISSUED AT 245 PM CDT THU MAY 28 2026
THE 19Z/2 PM SURFACE ANALYSIS SHOWS 1027 MB HIGH PRESSURE OVER
LAKE SUPERIOR AND NORTHERN MI AND RIDGING INTO IL. A WEAK COLD
FRONT HAD PUSHED SW OF CWA NEARING THE MO/IL BORDER. BANDS OF
CIRRUS CLOUDS WERE OVER CENTRAL AND SOUTHERN IL WITH PARTLY TO
MOSTLY SUNNY SKIES OVER CWA. EAST TO NE WINDS 7-15 MPH AND
GUSTS UP TO AROUND 20 MPH WITH WARM TEMPERATURES OF 83-89F.
DEWPOINTS WERE IN THE MID 50S TO LOWER 60S IN CENTRAL IL AND MID
60S IN SOUTHEAST IL SOUTH OF I-70.
AN OMEGA BLOCK PATTERN WILL PREVAIL ACROSS THE US THROUGH THE
MIDDLE OF NEXT WEEK, FEATURING STRONG UPPER LOWS/TROFS OVER THE
WESTERN STATES AND NEW ENGLAND WITH AN UPPER LEVEL RIDGE
SANDWICHED BETWEEN THEM OVER THE MIDWEST/IL. SURFACE HIGH
PRESSURE OVER THE WESTERN GREAT LAKES WILL SHIFT INTO THE
SOUTHERN GREAT LAKES FRIDAY. ANOTHER CANADIAN HIGH PRESSURE WILL
SETTLE SOUTHWARD FROM HUDSON BAY INTO THE GREAT LAKES AND OHIO
VALLEY THIS WEEKEND AND INTO THE MID ATLANTIC STATES DURING
MIDDLE OF NEXT WEEK WHILE RIDGING INTO IL. SYNOPTIC SUBSIDENCE
FROM THE SURFACE AND UPPER LEVEL HIGH PRESSURE RIDGES WILL
KEEP MUCH OF THE AREA DRY DURING THE NEXT 7 DAYS. A BAND OF
MOISTURE SOUTH AND WEST OF IL MAY SEE ISOLATED TO SCATTERED
SHOWERS MOVE INTO SW AND WEST CENTRAL IL FRI NIGHT INTO SAT
MORNING WITH SLIGHT POPS FROM MACOMB TO JACKSONVILLE TO
EFFINGHAM SW. MORE MID/HIGH CLOUDS WILL SPREAD NE INTO CENTRAL
IL DURING FRIDAY AND CONTINUE FRI NIGHT AND SATURDAY WITH MOSTLY
CLOUDY SKIES. MORE CLOUD COVER AND PERSISTENT EAST TO NORTHEAST
FLOW WILL SEE A BIT COOLER TEMPERATURES NEXT FEW DAYS, INTO THIS
WEEKEND WITH HIGHS IN THE UPPER 70S/LOWER 80S. HIGHS IN THE
UPPER 70S TO MID 80S ARE ON TAP FROM MONDAY THROUGH NEXT
THURSDAY WHICH IS NEAR OR SLIGHTLY ABOVE NORMAL HIGHS FOR EARLY
JUNE.
THE CLIMATE PREDICTION CENTER (CPC) 8-14 DAY OUTLOOK FOR JUNE
5-11TH HAS A 50-60% CHANCE OF ABOVE NORMAL TEMPERATURES OVER
CENTRAL AND SOUTHEAST IL AND PRECIPITATION TRENDING NEAR NORMAL.
AVIATION /18Z TAFS THROUGH 18Z FRIDAY/
ISSUED AT 1230 PM CDT THU MAY 28 2026
VFR CONDITIONS ARE FORECAST TO CONTINUE ACROSS THE CENTRAL IL
AIRPORTS THROUGH 18Z/1 PM FRI. FAIR WX DUE TO 1025-1027 MB HIGH
PRESSURE OVER LAKE SUPERIOR AND NORTHERN LAKE MI DRIFTING SE
INTO THE SOUTHERN GREAT LAKES AND OHIO FRI MORNING AS IT SLOWLY
WEAKENS. WILL SEE SCATTERED TO BROKEN CIRRUS CLOUD BANDS
STREAMING SOUTHEAST THIS AFTERNOON AND BE MORE SCATTERED
TONIGHT, WITH BROKEN HIGH CLOUDS PUSHING INTO SPI BY LATE FRI
MORNING. NE WINDS AROUND 10 KTS WITH GUST 15-20 KTS MAINLY AT
BMI AND CMI THIS AFTERNOON. GUSTINESS SUBSIDES AT SUNSET/01Z
WITH NE WINDS 5-10 KTS TONIGHT AND ESE WINDS NEAR 10 KTS FRIDAY.
ILX WATCHES/WARNINGS/ADVISORIES
NONE.
KEY MESSAGES...07
DISCUSSION...07
AVIATION...07
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