443
FXUS63 KLOT 221734
AFDLOT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE, IL
1234 PM CDT FRI AUG 22 2025
KEY MESSAGES
- AREAS OF FOG (DENSE IN SPOTS) THIS MORNING.
- SLIGHT CHANCE (20%) FOR A FEW THUNDERSTORMS SATURDAY
AFTERNOON.
- FALL-LIKE TEMPERATURES EARLY/MID NEXT WEEK.
DISCUSSION
ISSUED AT 215 AM CDT FRI AUG 22 2025
MAIN CONCERN IN THE SHORT TERM IS FOG POTENTIAL EARLY THIS
MORNING. FOG THUS FAR HAS BEEN DEVELOPING ACROSS NORTH CENTRAL
IN AND PORTIONS OF SOUTHWEST WI BUT SATELLITE IS STARTING TO
SHOW FOG DEVELOPING ACROSS EAST CENTRAL IL. WILL NEED TO MONITOR
TRENDS FOR A POSSIBLE DENSE FOG ADVISORY WITH THE MOST FAVORED
AREAS BEING ALONG AND SOUTH OF I-80, THOUGH DENSE FOG WILL ALSO
BE POSSIBLE ACROSS NORTHWEST IL. THIS FOG WILL LIFT/DISSIPATE
THROUGH MID MORNING.
HIGH TEMPS TODAY ARE EXPECTED TO REACH THE UPPER 70S TO LOWER
80S FOR MOST AREAS WITH A LAKE BREEZE EXPECTED THIS AFTERNOON,
THOUGH THERE REMAINS SOME UNCERTAINTY FOR HOW FAR INLAND THE
LAKE BREEZE MAY MOVE.
A COLD FRONT WILL MOVE ACROSS THE AREA SATURDAY WITH A LOW
CHANCE OF SHOWERS TOWARD DAYBREAK SATURDAY MORNING ACROSS THE
NORTHWEST CWA WITH MOST MODELS STAYING DRY. ADDITIONAL SHOWERS
ARE POSSIBLE SATURDAY MORNING WITH PERHAPS A LOW CHANCE (20%)
FOR A FEW THUNDERSTORMS SATURDAY AFTERNOON, MAINLY SOUTH OF
I-80. WHILE CONFIDENCE IS FAIRLY LOW, MAINTAINED GOING SLIGHT
CHANCE POPS DURING THIS TIME PERIOD ALONG WITH THUNDER MENTION
FOR SATURDAY AFTERNOON.
COOLER AIR WILL BEGIN TO ARRIVE SATURDAY NIGHT AND WILL CONTINUE
THROUGH THE MIDDLE OF THE WEEK WITH HIGH TEMPS GENERALLY IN THE
70S AND LOW TEMPS IN THE UPPER 40S/LOWER 50S. USUAL COOL SPOTS
MAY SEE MID 40S ON A FEW MORNINGS.
DRY WEATHER IS EXPECTED FOR MUCH OF NEXT WEEK WITH THE
EXCEPTION OF SOME LAKE EFFECT RAIN SHOWERS POSSIBLE ACROSS
NORTHWEST IN SUNDAY NIGHT INTO MONDAY AND AGAIN MONDAY NIGHT
INTO TUESDAY. CMS
AVIATION /18Z TAFS THROUGH 00Z SUNDAY/
ISSUED AT 1234 PM CDT FRI AUG 22 2025
PERIODS OF LOW-END CUMULUS WILL PERSIST THROUGH MUCH OF THE
PERIOD, WITH BKN COVERAGE THIS AFTERNOON AND AGAIN LATE TONIGHT
INTO SATURDAY MORNING. ISOLATED VFR SHRA ARE POSSIBLE (10-20
PERCENT CHANCE) WITH A COLD FRONT CROSSING THE AREA FROM THE
PRE-DAWN HOURS THROUGH MID-MORNING SATURDAY, BUT POTENTIAL AND
COVERAGE REMAINS TOO LOW TO INCLUDE IN THE TAF AT THIS TIME.
A WEAK LAKE MODIFIED BOUNDARY CURRENTLY DEVELOPING OVER MDW AND
EAST OF ORD SHOULD BEGIN TO DRIFT FARTHER INLAND/WEST THIS
AFTERNOON. CURRENT LIGHT WINDS GENERALLY WITHIN THE NW QUADRANT
AT ORD WILL SHIFT SE UNDER 10 KNOTS MID/LATE AFTERNOON WHILE MDW
SHOULD PREVAIL WITH E OR SE WINDS THROUGHOUT THE AFTERNOON.
WINDS WILL SETTLE LIGHT SSW AFTER SUNSET, THEN VEER WNW WITH
GUSTS AROUND 20 KNOTS OR HIGHER BEHIND THE COLD FRONT SATURDAY
MORNING AND AFTERNOON.
KLUBER
LOT WATCHES/WARNINGS/ADVISORIES
IL...NONE.
IN...NONE.
LM...NONE.
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