687
FXUS61 KILN 010547
AFDILN
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WILMINGTON OH
147 AM EDT WED APR 1 2026
WHAT HAS CHANGED
WIDESPREAD SHOWERS AND STORMS ARE EXPECTED THROUGH THE DAYTIME AS A
FRONT SLOWLY DRIFTS SOUTH THROUGH THE LOCAL AREA. A FEW ISOLATED
STRONG TO SEVERE STORMS MAY BE POSSIBLE SOUTH OF I-70 TO NEAR THE
OHIO RIVER THIS AFTERNOON INTO EARLY EVENING.
KEY MESSAGES
1) A COLD FRONT WILL LAY OUT APPROXIMATELY WEST TO EAST ACROSS THE
LOCAL AREA THROUGH THE DAYTIME, WITH A VERY TIGHT TEMPERATURE
GRADIENT EVOLVING BY THE AFTERNOON, WITH 40S AND 50S IN WEST-CENTRAL
TO CENTRAL OH AND 70S AND 80S NEAR/SOUTH OF THE OHIO RIVER.
2) NUMEROUS SHOWERS AND STORMS ARE EXPECTED THROUGH THE DAYTIME AS A
FRONT SLOWLY DRIFTS SOUTH THROUGH THE LOCAL AREA. A FEW ISOLATED
STRONG TO SEVERE STORMS CANNOT BE RULED OUT NEAR THE OHIO RIVER THIS
AFTERNOON INTO EARLY EVENING.
3) THE WARM AND ACTIVE WEATHER PATTERN CONTINUES THROUGH MOST OF THE
WEEK, WITH SEVERAL ROUNDS OF SHOWERS AND STORMS EXPECTED INTO THE
UPCOMING WEEKEND. A MUCH COOLER AND DRIER PATTERN WILL RETURN FOR
EARLY NEXT WEEK.
DISCUSSION
KEY MESSAGE 1)
A COLD FRONT, ORIENTED APPROXIMATELY WEST-TO-EAST, WILL SLOWLY DRIFT
S THROUGH THE ILN FA THROUGH THE DAYTIME. THIS BOUNDARY WILL NOT
ONLY PROVIDE A FOCUS FOR SHOWER AND STORM ACTIVITY, BUT ALSO RESULT
IN A VERY TIGHT TEMP GRADIENT BY MID AFTERNOON. NORTH OF THE FRONT,
WHERE EXPANSIVE LOW CLOUDS AND NE SFC FLOW WILL BECOME ESTABLISHED,
TEMPS IN THE 40S AND 50S ARE EXPECTED BY MID AFTERNOON. S OF THE
FRONT, CLOSER TO THE OH RVR AND POINTS FURTHER TO THE S INTO N/NE KY,
SOME BRIEF PEEKS OF SUNSHINE ALONG WITH SW SFC FLOW WILL HELP TEMPS
REACH INTO THE UPPER 70S TO NEAR 80 DEGREES PRIOR TO CONVECTIVE
INFLUENCES.
KEY MESSAGE 2)
THE FRONT WILL PROVIDE A FOCUS FOR NUMEROUS SHOWERS/STORMS DURING THE
DAYTIME, WITH SEVERAL CLUSTERS OF CONVECTION EXPECTED TO DEVELOP AND
MIGRATE E THROUGH THE SRN HALF OF THE LOCAL AREA BY LATE MORNING
THROUGH EARLY EVENING. SOME DIURNALLY-ENHANCED INSTBY WILL DEVELOP
INTO THE AREA BY NOON, STRETCHING FROM SE IN THROUGH SOUTH-CENTRAL
OH FROM APPROXIMATELY FRANKLIN CO IN TO HOCKING CO OH AND POINTS
FURTHER S. THE INSTBY/MOISTURE/THETA-E GRADIENT WILL PROVIDE A FOCUS
FOR SEVERAL ROUNDS OF LOOSELY-ORGANIZED MULTICELL CLUSTERS OF STORMS
BY EARLY TO MID AFTERNOON, WITH MODERATE MLCAPE ON THE ORDER OF 1000+
J/KG IN THESE AREAS. EFFECTIVE BULK SHEAR ON THE ORDER OF ABOUT
30KTS WILL BE SUFFICIENT TO PROMOTE THE DEVELOPMENT OF MULTI-CELL
CLUSTERS OR MINI LINEAR SEGMENTS, THE STRONGEST OF WHICH COULD
PRODUCE GUSTY WINDS AND /VERY/ ISOLATED DAMAGING WINDS. THE GREATEST
THREAT WITH THIS ACTIVITY WILL BE GUSTY WINDS, ESPECIALLY WITH STEEP
LL LAPSE RATES S OF THE SFC FRONT. HOWEVER, THE LACK OF SUBSTANTIAL
SHEAR AND RELATIVE WEAK FORCING WILL INHIBIT THE OVERALL STORM
ORGANIZATION POTENTIAL, LEADING TO AN ENVIRONMENT THAT MAY BE CAPABLE
OF ISOLATED WIND DAMAGE AND SMALL HAIL, BUT PROBABLY NOT MUCH MORE
THAN THAT. THIS IS CERTAINLY A MARGINAL POTENTIAL FOR SEVERE STORMS
THAT WILL EVOLVE STRICTLY NEAR/S OF THE FRONT IN THE AREAS DESCRIBED.
THE GREATEST COVERAGE OF STORMS WILL BE FROM AROUND NOON TO ABOUT 8
PM BEFORE COVERAGE BECOMES MORE ISOLATED IN N/NE KY BY MID/LATE
EVENING.
ISO SHRA WILL LINGER NEAR THE FRONT AS IT BEGINS TO PIVOT BACK N
RATHER ABRUPTLY BY/AFTER MIDNIGHT, CLEARING THE ILN FA AROUND
DAYBREAK THURSDAY. THIS WILL USHER IN MUCH WARMER/MOIUSTURE-RICH AIR
BACK INTO THE AREA, WITH A NON-DIURNAL TEMP TRACE EXPECTED TONIGHT
WITH THE WARM FRONT SURGING BACK N LATE IN THE NIGHT.
KEY MESSAGE 3)
A MORE-AMPLIFIED S/W WILL PIVOT INTO THE MID MS RVR VLY LATE TONIGHT
INTO THE DAY THURSDAY, WITH DOWNSTREAM RIDGING EXPANDING IN RESPONSE
TO THE APPROACH OF THIS FEATURE. THE ILN FA WILL BE POSITIONED
SQUARELY IN THE EXPANDING WARM-SECTOR, WITH THE LL BOUNDARY SURGING
WELL TO THE N OF THE LOCAL AREA DURING THE AFTERNOON.
WITH THE SURGE OF MOISTURE/WARMTH NORTH ACROSS THE AREA BY THURSDAY
AFTERNOON, SUPPOSE THAT A FEW SPOTTY SHRA/TSRA CANNOT BE RULED OUT AS
THE CAP WILL BE RELATIVELY SHALLOW. HOWEVER, THERE ISN'T MUCH INSTBY
OR FORCING AT ALL TO INITIATE THIS ACTIVITY UNTIL LATE EVENING, SO
CONFIDENCE ON COVERAGE OF ACTIVITY DURING THE AFTERNOON IS QUITE
LOW. SHOWER/STORM ACTIVITY WILL LIKELY INCREASE INTO FAR WRN PARTS OF
THE LOCAL AREA EARLY THURSDAY NIGHT, WITH THE S/W GRADUALLY BEING
FORCED OVER THE CREST OF THE RIDGE CENTERED OFF THE CAROLINA COAST.
THIS SUGGESTS THAT THE FORCING SHOULD DECREASE A BIT LATER INTO THE
NIGHT, SO THERE ARE UNCERTAINTIES REGARDING THE MAINTENANCE OF
CONVECTIVE COVERAGE/INTENSITY FURTHER E INTO THE LOCAL AREA INTO
FRIDAY MORNING. THE BEST CHANCE FOR SHOWERS/STORMS THURSDAY NIGHT
WILL BE NEAR/W OF I-71.
ANOTHER SYSTEM WILL IMPACT THE REGION WITH ADDITIONAL SHOWERS/STORMS
SATURDAY INTO SATURDAY NIGHT BEFORE DRIER CONDITIONS RETURN BY
SUNDAY. ABOVE NORMAL TEMPS ARE LIKELY THURSDAY THROUGH SATURDAY, WITH
HIGHS IN THE 80S AND LOWS IN THE 50S AND 60S DURING THIS STRETCH
BEFORE MUCH COOLER AIR SETTLES BACK IN SUNDAY THROUGH EARLY NEXT
WEEK. SOME PATCHY FROST MAY BE POSSIBLE AT TIMES EARLY NEXT WEEK, BUT
THE EXPANSE OF THIS WILL ULTIMATELY BE DICTATED BASED ON SUBTLE
CHANGES IN CLOUD COVER AND WINDS.
AVIATION /06Z WEDNESDAY THROUGH SUNDAY/
A COLD FRONT WILL MOVE INTO THE AREA THROUGH DAYBREAK, PUSHING
THROUGH AREA TAF SITES INTO THE AFTERNOON. THE FRONT MAY STALL FOR A
BIT DURING THE AFTERNOON NEAR KILN AS SW SURFACE WINDS RESIST THE
SOUTHERLY PUSH. THE TIGHT FRONT COMPLICATES THE OVERALL WIND
FORECAST AS SW WINDS WILL TURN TO OUT OF THE NE FOLLOWING THE FROPA
FOR NRN SITES OF KDAY/KCMH/KLCK BY 15Z. THE FRONT WILL BE VERY CLOSE
TO KILN BY ABOUT 18Z, WITH A WEST-TO-EAST CORRIDOR OF SHRA/TSRA
ACTIVITY EXPECTED TO DEVELOP NEAR THE FRONT BY THE AFTERNOON. THIS
ACTIVITY WILL BE MOST WIDESPREAD FOR KILN/KCVG/KLUK BETWEEN ABOUT
16Z-22Z, BUT ISO ACTIVITY MAY LINGER WELL PAST 00Z AS THE FRONT
CRAWLS FURTHER S INTO THE EVENING. THE FRONT WILL BEGIN TO ABRUPTLY
PIVOT BACK N TOWARD THE END OF THE PERIOD, WITH ISO SHRA LINGERING TO
AROUND 06Z NEAR KCVG/KLUK.
MVFR/IFR CIGS ARE EXPECTED TO DEVELOP IN THE POST-FRONTAL ENVIRONMENT,
LINGERING ACROSS NORTHERN TAF SITES THROUGH THE ENTIRETY OF THE DAY.
THESE CIGS WILL OVERSPREAD FROM N TO S THROUGH THE DAYTIME, WITH SOME
MVFR VSBY ALSO POSSIBLE BEHIND THE FRONT. GIVEN THE UNCERTAINTY WITH
THE SOUTHERN EXTENT OF THE FRONT, MVFR CIGS WERE INCLUDED FOR
KCVG/KLUK AROUND/AFTER 00Z.
OUTLOOK...PERIODIC THUNDERSTORMS WITH MVFR CONDITIONS ARE POSSIBLE
THROUGH SATURDAY.
ILN WATCHES/WARNINGS/ADVISORIES
OH...NONE.
KY...NONE.
IN...NONE.
DISCUSSION...
AVIATION...
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