Area Forecast Discussion
Issued by NWS Wilmington, OH

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000 FXUS61 KILN 040911 AFDILN AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WILMINGTON OH 511 AM EDT SAT JUL 4 2015 .SYNOPSIS... HIGH PRESSURE WILL BEGIN TO NOSE IN AND PRECIPITATION WILL COME TO AN END EARLY...AS A SURFACE FRONTAL BOUNDARY SETTLES INTO THE TENNESSEE VALLEY. THIS HIGH WILL PROVIDE MAINLY DRY CONDITIONS ON SUNDAY. THE EXCEPTION WILL BE SOUTH OF THE OHIO RIVER...WHERE A A CHANCE OF AFTERNOON RAIN WILL EXIST AS MOISTURE BEGINS TO RETURN NORTH. UPPER LEVEL LOW PRESSURE WILL DRIFT NORTH SUNDAY NIGHT INTO MONDAY...PROVIDING A CHANCE OF SHOWERS AND THUNDERSTORMS. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... MID LEVEL S/W TROF AXIS TO SHIFT EAST TODAY WITH NW FLOW AND MINOR RIDGING BUILDING IN. LINGERING MORNING SHOWERS OVER THE EXTREME SE WILL COME TO AN END AS SFC HIGH PRESSURE BUILD INTO THE GREAT LAKES AND FRONTAL BOUNDARY DROPS SOUTH INTO THE TN VLY. WHERE SKIES HAVE CLEARED ACRS THE NW COUNTIES...PATCHY FOG HAS DEVELOPED. THE FOG WILL IMPROVE WITH CLOUDS DECREASING TODAY. TEMPERATURES WILL MODERATE A LITTLE WARMER BUT WILL STILL REMAIN BELOW NORMAL WITH HIGHS AROUND 80. && .SHORT TERM /6 PM THIS EVENING THROUGH MONDAY/... SURFACE RIDGE AXIS TO SLIDE EAST OF OHIO INTO PA BY SUNDAY MORNING WITH MID LEVEL RIDGE BUILDING INTO THE GREAT LAKES. THIS RIDGE WILL PROVIDE PARTLY CLOUDY AND DRY CONDITIONS. LOWS WILL RANGE FROM THE UPPER 50S NE TO THE MID 60S SW. MID LEVEL LOW DEVELOPS OVER THE TN VLY UNDER THE UPPER RIDGE SITUATED OVER THE GREAT LAKES. LATEST NUMERICAL MODEL SOLNS TAKING MOISTURE INTO NRN KY SUNDAY AFTN AHD OF THIS LOW. WILL INTRODUCE CHC POPS ACRS THE FAR SOUTH DURG THE AFTN. TEMPERATURES WILL CONTINUE TO WARM WITH HIGHS IN THE LOWER 80S. THE UPPER LOW TO DRIFT SLOWLY NNE INTO THE OHIO VALLEY NNE SUNDAY NIGHT/MONDAY AHEAD OF TROF MOVING THRU THE NRN PLAINS/WESTERN GREAT LAKES. WILL INCREASE POPS WITH THE BEST CHANCE ACRS THE SE COUNTIES. TEMPERATURES WILL WARM CLOSE TO NORMAL WITH HIGHS MONDAY IN THE MIDDLE 80S. && .LONG TERM /MONDAY NIGHT THROUGH FRIDAY/... THE UPPER LOW WILL WEAKEN TO AN OPEN WAVE AND MOVE EAST MONDAY NIGHT. SURFACE FLOW WILL TURN SOUTH AND THE NEXT FRONT WILL CROSS SOMETIME LATER TUESDAY. DIFFERENCES IN TIMING THE FRONT ABOUND...AND THE EURO AND CANADIAN MODELS HAVE BETTER AGREEMENT WITH ONE ANOTHER. HAVE AN INCREASED CHANCE FOR TSTORMS FROM NW-SE TUESDAY AND LINGERING IN THE SOUTH OVERNIGHT INTO WEDNESDAY. GFS HAS A STRONG SURFACE HIGH BUILD ON WED NIGHT TO THE NORTH WHEREAS THE CANADIAN AND EUROPEAN MODELS EVOLVE A SURFACE LOW FROM THE MIDWEST TO THE OHIO VALLEY WED AND WED NIGHT. REGARDLESS OF HOW THE MODELS DIFFER...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 /09Z SATURDAY THROUGH WEDNESDAY/... LOW PRESSURE IS MOVING EAST FOLLOWED BY HIGH PRESSURE AND A DRIER AIRMASS. THIS HAS ALLOWED SHOWERS TO DISSIPATE...AND CLOUDS ARE GRADUALLY DECREASING. BR FORMING IN RESIDUAL LOW LEVEL MOISTURE UNDER CLEARING SKIES IS REDUCING VISIBILITIES AND WILL CONTINUE TO DO SO UNTIL AROUND 13Z. SKY COVER SHOULD BE LIMITED TO ALTOCUMULUS LINGERING BEHIND THE DEPARTING LOW...PLUS CUMULUS DEVELOPING MAINLY DURING DAYLIGHT HOURS. WINDS WILL STAY UNDER 10 KNOTS WHILE SHIFTING FROM NORTH TO NORTHWEST. BR MAY FORM AGAIN LATE IN THE FORECAST. OUTLOOK...THUNDERSTORMS POSSIBLE ON TUESDAY. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...NONE. KY...NONE. IN...NONE. && $$ SYNOPSIS...AR NEAR TERM...AR SHORT TERM...AR LONG TERM...FRANKS AVIATION...CONIGLIO

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