Area Forecast Discussion
Issued by NWS Wilmington, OH

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000 FXUS61 KILN 030542 AFDILN AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WILMINGTON OH 142 AM EDT FRI JUL 3 2015 .SYNOPSIS... A STALLED FRONTAL BOUNDARY IS CURRENTLY LOCATED NEAR THE OHIO RIVER. LOW PRESSURE IS FORECAST TO MOVE EAST ALONG THIS BOUNDARY FRIDAY...KEEPING A CHANCE FOR SHOWERS AND THUNDERSTORMS. HIGH PRESSURE WILL KEEP CHANCES MORE LIMITED OVER THE WEEKEND. TEMPERATURES WILL REMAIN SLIGHTLY BELOW NORMAL THROUGH EARLY NEXT WEEK. && .NEAR TERM /UNTIL 6 AM THIS MORNING/... NOT TO MANY CHANGES TO THE FORECAST THIS EVENING. A STALLED FRONT REMAINS PLACED ALONG THE OHIO RIVER WITH SHOWERS FIRING ALONG THE BOUNDARY. DID GO AHEAD AND RAISE LOW TEMPERATURES A BIT OVERNIGHT AS CLOUD COVER WILL PROBABLY HOLD UP LOWS A DEGREE OR TWO. THERE IS ALSO A CHANCE OF SOME PATCHY FOG OVERNIGHT ESP ALONG THE STALLED BOUNDARY. FOR NOW THINK FOG WILL REMAIN ISOLATED SO HAVE LEFT MENTION OUT OF GRIDS. PREV DISCUSSION--> MODELS ARE IN AGREEMENT IN KEEPING A FRONT STALLED NEAR THE OHIO RIVER OVERNIGHT. THERE ARE SLIGHT DISAGREEMENTS HOWEVER IN THE STRENGTH AND PATH OF THE SFC LOW. THIS CAUSES DIFFERENCES IN THE PLACEMENT OF PCPN OVERNIGHT. THE BEST CHANCE OF PCPN WILL BE IN OUR NRN KY COUNTIES WITH DECREASING CHANCES AS YOU HEAD NORTH. WENT HIGH CHANCE TO LIKELY POPS IN NRN KENTUCKY THIS EVENING WITH A LITTLE LOWER POP LATER IN THE NIGHT. WENT DRY NORTH OF THE U.S. 35 CORRIDOR. WITH VERY LITTLE FLOW OVER THE REGION...THE STORMS THAT DEVELOP ARE SLOW MOVERS AND CAPABLE OF PRODUCING BRIEF HEAVY RAIN. WILL CONTINUE THE FLASH FLOOD WATCH OVERNIGHT TO COVER THIS THREAT. AS FOR LOW TEMPERATURES TONIGHT...THE TYPICAL NORTH-SOUTH GRADIENT WILL BE IN PLACE. UPPER 50S IN WEST CENTRAL OHIO...UP TO MID 60S IN NRN KY. && .SHORT TERM /6 AM THIS MORNING THROUGH SATURDAY NIGHT/... SFC LOW CONTINUES ITS SLOW JOURNEY EASTWARD ON FRIDAY. THIS WILL KEEP THE SAME PATTERN THAT WE HAVE HAD FOR THE PAST COUPLE OF DAYS. THE HIGHEST POPS IN KENTUCKY WITH DECREASING POPS AS YOU HEAD NORTH. WENT WITH LIKELY POPS IN NRN KENTUCKY ON FRIDAY...TAPERING UP TO SLIGHT CHC POP IN WEST CENTRAL OHIO. WITH THE SFC LOW IN THE VICINITY PROVIDING LIFT...WILL KEEP THE FFA GOING UNTIL 00Z SATURDAY. HIGH PRESSURE BUILDING INTO THE MID MS VALLEY TOMORROW NIGHT WILL HELP BRING SOME DRYING TO THE REGION AS IT PUSHES THE BOUNDARY A LITTLE TO THE SOUTH. AFTER LINGERING CHANCES IN THE EVENING...THE LATER HALF OF FRIDAY NIGHT SHOULD BE DRY. CANT TOTALLY RULE OUT SOMETHING DEVELOPING ACROSS THE SRN THIRD OF THE FA ON SATURDAY...AS THEY WILL REMAIN ON THE FRIDGE OF THE DEVELOPMENT NEAR THE BOUNDARY. TEMPERATURES WILL CONTINUE TO BE SLIGHTLY BELOW NORMAL. TEMPERATURES ON FRIDAY WERE KEPT IN THE MID TO UPPER 70S...WITH CLOUDS AND PRECIPITATION CHANCES AGAIN. WITH A LITTLE MORE SUN...VALUES SHOULD COME BACK INTO THE UPPER 70S TO LOWER 80S ON SATURDAY. && .LONG TERM /SUNDAY THROUGH THURSDAY/... A SURFACE LOW SOUTH OF THE AREA WILL MOVE EAST AT THE BEGINNING OF THE PERIOD AND SOME LINGERING SHOWERS WILL BE POSSIBLE ALONG AND SOUTH OF THE OHIO RIVER THROUGH SUNDAY AFTERNOON AS AN UPPER LOW LINGERS OVER KENTUCKY. RIDGING WILL BUILD BEHIND IT OVERNIGHT AND MONDAY WITH SOUTHERLY SURFACE FLOW SETTING UP AHEAD OF THE NEXT SYSTEM. THE UPPER LOW IS SLOW TO EXIT THE EAST COAST AND THIS HAS APPARENTLY SLOWED THE EXPECTED PROGRESSION OF THE NEXT COLD FRONT TO EARLY WEDNESDAY. INCREASING CHANCES FOR SHOWERS AND THUNDERSTORMS WILL BE FOUND TUESDAY EVENING AND ESPECIALLY OVERNIGHT. THE SYNOPTIC SYSTEMS BEGIN TO DIVERGE DEPENDING ON THE MODEL USED BEYOND THIS TIME. REGARDLESS OF HOW THEY DEVELOP...IT LOOKS SIMILAR TO THE CURRENT PATTERN WITH FREQUENT PERIODS OF PASSING SHOWERS AND STORMS. HAVE HIGHER CHANCE POPS THROUGH MUCH OF THE EXTENDED. HIGH TEMPERATURES ARE A BIT MUTED AND GENERALLY BELOW CLIMO GIVEN THE EXPECTED PASSING RAIN AND CLOUD COVER...WITH LOWS AT OR JUST ABOVE CLIMO FOR THE SAME REASONING. && .AVIATION /06Z FRIDAY THROUGH TUESDAY/...
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MOISTURE ASSOCIATED WITH WEAK SURFACE LOW PRESSURE TRAVELING ACROSS KENTUCKY ON A WESTERLY FLOW ALOFT WILL BRING LESS THAN IDEAL FLIGHT CONDITIONS. IT APPEARS THAT SOUTHERN SITES CVG AND LUK WILL BE MOST AFFECTED...AND AFTER MVFR CEILINGS AND VISIBILITIES FORM LATE TONIGHT...MODELS INDICATE SHOWERS DEVELOPING AROUND 14Z. NORTHERN SITES MAY SEE SHOWERS BY AFTERNOON...BUT KEPT FORECAST VFR WITH SITES FARTHER FROM LOW CENTER AND CONCENTRATED LOW LEVEL MOISTURE. WITH ONLY MARGINAL INSTABILITY EXPECTED...KEPT THUNDER OUT OF THE FORECAST FOR NOW THOUGH IT CANNOT BE RULED OUT IN LATER FORECASTS. SHOWERS SHOULD DISSIPATE FRIDAY NIGHT WITH LOSS OF DAYTIME HEATING AND WITH THE LOW MOVING EAST. OUTLOOK...THUNDERSTORMS POSSIBLE ON TUESDAY.
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&& .ILN WATCHES/WARNINGS/ADVISORIES...
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OH...NONE. KY...FLASH FLOOD WATCH THROUGH THIS EVENING FOR KYZ089-090-094>100. IN...FLASH FLOOD WATCH THROUGH THIS EVENING FOR INZ080.
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&& $$ SYNOPSIS...HATZOS/HAINES/SITES NEAR TERM...HAINES/SITES SHORT TERM...SITES LONG TERM...FRANKS AVIATION...CONIGLIO

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