935
FXUS61 KILN 201021
AFDILN
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WILMINGTON OH
621 AM EDT MON APR 20 2026
WHAT HAS CHANGED
UPGRADED THE FREEZE WATCH TO A FREEZE WARNING FOR TONIGHT.
KEY MESSAGES
1) BELOW NORMAL TEMPERATURES WILL CONTINUE THROUGH MONDAY NIGHT
BEFORE A RETURN TO ABOVE NORMAL TEMPERATURES ON TUESDAY.
2) MULTIPLE SYSTEMS WILL BRING SHOWERS AND SOME THUNDERSTORMS TO THE
REGION AT TIMES THROUGH THE WEEK.
DISCUSSION
KEY MESSAGE 1)
SURFACE HIGH PRESSURE CENTERED OVER THE SOUTHERN GREAT LAKES EARLY
THIS MORNING WILL SHIFT OFF TO THE EAST THROUGH TONIGHT. THIS WILL
LEAD TO CONTINUED COOL TEMPERATURES TODAY WITH AFTERNOON HIGHS ONLY
RANGING FROM THE LOWER 50S NORTH TO THE UPPER 50S IN THE SOUTH.
LOWS TONIGHT WILL RANGE FROM THE LOWER 30S IN THE FAR NORTHEAST TO
THE UPPER 30S IN THE SOUTHWEST. WILL GO AHEAD AND UPGRADE THE FREEZE
WATCH TO A FREEZE WARNING FOR TONIGHT ACROSS OUR FAR NORTHEAST. SOME
PATCHY FROST WILL BE POSSIBLE ELSEWHERE ACROSS OUR EASTERN AREAS BUT
WITH THE POTENTIAL FOR WINDS TO PICK UP A BIT LATER TONIGHT, WILL
LIMIT THE MENTION OF FROST FOR NOW.
WE WILL THEN START TO GET INTO RETURN FLOW ON THE BACK SIDE OF THE
HIGH WITH TEMPERATURES REBOUNDING BACK INTO THE 70S BY TUESDAY.
KEY MESSAGE 2)
A WEAK MID LEVEL SHORT WAVE WILL BRING A CHANCE FOR SHOWERS AND FEW
THUNDERSTORMS TO THE AREA ON WEDNESDAY. A SOMEWHAT STRONGER SHORT
WAVE WILL LEAD TO A BETTER CHANCE FOR SHOWERS AND THUNDERSTORMS
FRIDAY INTO FRIDAY NIGHT.
AVIATION /10Z MONDAY THROUGH FRIDAY/
SURFACE HIGH PRESSURE WILL SHIFT EAST ACROSS THE SOUTHERN GREAT
LAKES THROUGH TONIGHT. A FEW CU WILL BE POSSIBLE LATE THIS AND INTO
THIS AFTERNOON. VFR CONDITIONS WILL PREVAIL DURING THE TAF PERIOD.
OUTLOOK....THUNDERSTORMS POSSIBLE TUESDAY NIGHT INTO WEDNESDAY, AND
THEN AGAIN ON FRIDAY. MVFR CONDITIONS ARE POSSIBLE ON WEDNESDAY AND
FRIDAY.
ILN WATCHES/WARNINGS/ADVISORIES
OH...FREEZE WARNING UNTIL 10 AM EDT THIS MORNING FOR OHZ026-034-035-
042>046-051>056-060>065-070>074.
FROST ADVISORY UNTIL 10 AM EDT THIS MORNING FOR OHZ077>082-088.
FREEZE WARNING FROM 11 PM THIS EVENING TO 10 AM EDT TUESDAY FOR
OHZ046-056-065-074.
KY...FROST ADVISORY UNTIL 10 AM EDT THIS MORNING FOR KYZ089>100.
IN...FREEZE WARNING UNTIL 10 AM EDT THIS MORNING FOR INZ050-058-059-066.
FROST ADVISORY UNTIL 10 AM EDT THIS MORNING FOR INZ073>075-080.
DISCUSSION...JGL
AVIATION...JGL
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