173
FXUS61 KILN 271820
AFDILN
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WILMINGTON OH
220 PM EDT MON APR 27 2026
WHAT HAS CHANGED
NO SIGNIFICANT CHANGES.
KEY MESSAGES
1) SHOWERS AND THUNDERSTORMS WILL OCCUR LATER THIS EVENING INTO THE
OVERNIGHT AHEAD OF A COLD FRONT. A FEW STRONG TO SEVERE STORMS WILL
BE POSSIBLE LATE THIS EVENING AND INTO THE OVERNIGHT HOURS.
2) A LOW PRESSURE SYSTEM WILL MOVE THROUGH THE OHIO VALLEY TUESDAY
NIGHT, BRINGING ADDITIONAL SHOWERS AND THUNDERSTORMS. A DRIER AND
COOLER AIRMASS WILL THEN SETTLE INTO THE REGION FOR THE REST OF THE
WEEK.
DISCUSSION
KEY MESSAGE 1)
WIDESPREAD SHOWERS AND THUNDERSTORMS ARE ONGOING BACK TO OUR WEST
EARLY THIS AFTERNOON IN ASSOCIATION WITH A MID LEVEL SHORT WAVE
LIFTING NORTHEAST ACROSS THE MID MISSISSIPPI VALLEY. THIS ACTIVITY IS
EXPECTED TO GRADUALLY WEAKEN AS IT MOVES EAST TOWARD OUR AREA AND
OUTRUNS THE BETTER FORCING IN ADDITION TO ENCOUNTERING A SOMEWHAT
DRIER/LESS UNSTABLE AIRMASS IN PLACE ACROSS OUR AREA. THAT BEING
SAID, SOME OF THESE SHOWERS WILL LIKELY MAKE IT INTO AT LEAST
WESTERN PORTIONS OF OUR AREA LATER THIS AFTERNOON INTO EARLY EVENING.
MEANWHILE, AS AREAS BACK TO OUR WEST FURTHER DESTABILIZE THIS
AFTERNOON, ADDITIONAL SHOWERS AND STORMS ARE EXPECTED TO DEVELOP.
THIS ACTIVITY WILL EVENTUALLY CONSOLIDATE INTO MORE OF A LINE OF
SHOWERS AND THUNDERSTORMS THAT WILL MOVE EAST-SOUTHEAST INTO OUR
AREA LATE THIS EVENING AND INTO THE OVERNIGHT HOURS. BY THIS TIME,
THE BETTER SURFACE BASED INSTABILITIES JUST OFF TO OUR WEST
WILL BEGIN TO PINCH OFF, BUT AS THE STRONGER FORCING MOVES INTO OUR
AREA, THIS MAY STILL BE ENOUGH FOR A FEW STRONG TO SEVERE STORMS.
THE BEST CHANCE FOR SEVERE STILL LOOKS TO BE ACROSS OUR FAR WESTERN
TO SOUTHWEST AREAS IN THE 11 PM TO 3 AM TIME FRAME. BOWING SEGMENTS
WITH DAMAGING WINDS REMAIN THE PRIMARY SEVERE THREAT.
KEY MESSAGE 2)
A SLOW MOVING COLD FRONT WILL SAG SOUTHEAST ACROSS OUR AREA TUESDAY
INTO WEDNESDAY. SOME ADDITIONAL MID LEVEL ENERGY MOVING INTO THE
TENNESSEE AND OHIO VALLEYS WILL HELP A SURFACE WAVE/LOW SPIN UP
ALONG THE FRONT, WHICH WILL THEN MOVE ALONG OR JUST SOUTH OF THE
OHIO RIVER THROUGH TUESDAY NIGHT. THERE IS SOME UNCERTAINTY AS TO THE
EXACT PLACEMENT OF THE FRONT THROUGH TUESDAY AFTERNOON, BUT SOME
WEAK DESTABILIZATION ALONG AND SOUTHEAST OF THE FRONT WILL LIKELY
LEAD TO ISOLATED TO SCATTERED SHOWER AND THUNDERSTORM DEVELOPMENT
THROUGH THE DAY. THE BEST CHANCE FOR THIS APPEARS TO BE ACROSS OUR
SOUTHEASTERN AREAS.
MORE WIDESPREAD SHOWERS AND THUNDERSTORMS WILL OVERSPREAD OUR AREA
TUESDAY NIGHT IN ASSOCIATION WITH THE SURFACE WAVE. GIVEN THE MORE
SOUTHERN TREND, ANY SEVERE THREAT LOOKS MINIMAL AT THIS TIME WITH
THIS FEATURE. PCPN WILL TAPER OFF LATER TUESDAY NIGHT INTO WEDNESDAY
MORNING AS THE LOW MOVES OFF TO THE EAST AND THE COLD FRONT MOVES
THROUGH. BEHIND THE FRONT, A DRIER AND COOLER AIRMASS WILL SETTLE
INTO THE AREA FOR THE REMAINDER OF THE WEEK.
AVIATION /18Z MONDAY THROUGH SATURDAY/
A LOW PRESSURE SYSTEM LIFTING NORTHEAST ACROSS THE GREAT LAKES
TONIGHT WILL LEAD TO A DEVELOPING CHANCE FOR SHOWERS AND
THUNDERSTORMS THIS EVENING AND INTO THE EARLY MORNING HOURS. THIS
WILL RESULT IN A LOWERING CLOUD DECK THROUGH THIS EVENING WITH MVFR
CIGS AND VSBYS DEVELOPING HEADING INTO THE OVERNIGHT HOURS. THE BEST
CHANCE FOR THUNDERSTORMS WILL BE IN THE 03Z-07Z TIME FRAME AND
WILL COVER THIS WITH A PROB30. SHOWER ACTIVITY WILL TAPER OFF FROM
THE WEST LATER TONIGHT. MVFR CIGS WILL PERSIST THROUGH TUESDAY
MORNING BEFORE LIFTING INTO VFR HEADING INTO TUESDAY AFTERNOON.
SOUTH TO SOUTHEAST WINDS WILL GUST IN THE 20 TO 30 KNOT RANGE AT
TIMES INTO TONIGHT, WITH STRONGER GUSTS POSSIBLE WITH THE
THUNDERSTORMS LATE THIS EVENING INTO THE EARLY MORNING HOURS.
OUTLOOK....ADDITIONAL THUNDERSTORMS ARE POSSIBLE TUESDAY NIGHT
THROUGH WEDNESDAY MORNING. MVFR CEILINGS ARE POSSIBLE AT TIMES
INTO WEDNESDAY.
ILN WATCHES/WARNINGS/ADVISORIES
OH...NONE.
KY...NONE.
IN...NONE.
DISCUSSION...JGL
AVIATION...JGL
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