Area Forecast Discussion
Issued by NWS Cleveland, OH

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000 FXUS61 KCLE 240746 AFDCLE AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CLEVELAND OH 346 AM EDT THU JUL 24 2014 .SYNOPSIS...
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AN UNSEASONABLY COOL ARE OF HIGH PRESSURE WILL CROSS THE LOWER GREAT LAKES BY TONIGHT AND MOVE OFF TO THE EAST ON FRIDAY. A WARM FRONT WILL DEVELOP OVER THE MIDWEST BY SATURDAY AND MOVE EAST ACROSS THE AREA. A COLD FRONT WILL FOLLOW ON SUNDAY. ANOTHER COOL AIR MASS WILL MOVE INTO THE AREA BY MONDAY.
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&& .NEAR TERM /UNTIL 6 PM THIS EVENING/...
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THE TROUGH ALOFT WILL MOVE EAST ACROSS THE AREA TODAY. PATCHY MID/HIGH CLOUDS WILL CROSS THE AREA EARLY. THE SURFACE RIDGE AXIS WILL REMAIN TO OUR WEST TODAY AND THE NORTH TO NORTHEAST FLOW WILL PERSIST. LAKE ENHANCED CLOUDS WILL LIKELY EXPAND THIS MORNING ACROSS NORTH CENTRAL AND NE OH AND NW PA. THERE SHOULD BE ENOUGH MIXING AND INCREASING SUBSIDENCE THIS AFTERNOON FOR INCREASING SUNSHINE AND IT SHOULD BECOME SUNNY EVERYWHERE. HIGHS GENERALLY ONLY IN THE LOWER AND MID 70S.
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&& .SHORT TERM /6 PM THIS EVENING THROUGH SUNDAY NIGHT/...
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HIGH PRESSURE WILL MOVE OVERHEAD TONIGHT. DEWPOINTS WILL BE IN THE UPPER 40S AND LOWER 50S AND LOW TEMPERATURES SHOULD HAVE NO TROUBLE DROPPING TO THESE LEVELS...PROBABLY EVEN A COUPLE OF DEGREES LOWER WHERE THERE IS GOOD RADIATIONAL COOLING AND IN THE TRADITIONAL COOL SPOTS. LOW TEMPERATURE GUIDANCE IS WITHIN A COUPLE OF DEGREES OF RECORD LOWS AND I BELIEVE IT. FORECAST LOWS WILL GENERALLY BE FROM THE MID 40S TO THE LOWER 50S...A COUPLE OF DEGREES WARMER AT THE LAKE ERIE LAKESHORE AND IN URBAN AREAS. SUNNY FRIDAY. PERHAPS A FEW CU ACROSS INLAND NE OH/NW PA AND FEW HIGH CLOUDS FROM THE WEST LATER IN THE DAY. HIGHS GENERALLY 75 TO 80. A BROAD AREA OF WARM ADVECTION IS PROGGED TO DEVELOP ACROSS THE UPPER MIDWEST BY FRIDAY NIGHT WITH AN UNSEASONABLY STRONG LOW LEVEL JET AND WARM FRONTOGENESIS. SEE NO REASON THAT THE SHOWERS AND STORMS THAT DEVELOP FRIDAY NIGHT WILL NOT MOVE INTO THE FORECAST AREA AS THE LOW LEVEL JET FLATTENS AND SPREADS ACROSS THE LOWER GREAT LAKES ON SATURDAY. IT WILL LIKELY NOT RAIN ALL DAY BUT THERE IS AT LEAST A CHANCE FOR SHOWERS OVER A SEVERAL HOUR PERIOD FROM WEST TO EAST DURING THE DAY SATURDAY. THE GFS TRIES TO WEDGE SOME VERY WARM AIR INTO THE AREA ON SATURDAY PROGGING 850 MB TEMPERATURES UP TO 19C. THE OTHER MODELS ARE A LITTLE COOLER. DO NOT WANT TO GO ALL OUT ON THE WARMTH GIVEN THE LIKELIHOOD OF CLOUDS AND SHOWERS. WILL FORECAST HIGHS GENERALLY FROM THE UPPER 70S TO THE LOWER 80S. THE COLD FRONT WILL BEGIN TO CROSS THE AREA ON SUNDAY. NOT SURE HOW FAST NEW SHOWERS AND STORMS MAY DEVELOP...PERHAPS EAST AND SOUTH OF TOLEDO? WILL HAVE THE HIGHEST POPS ACROSS NE OH/NW PA. HIGH TEMPERATURES WILL DEPEND ON THE AMOUNT OF CLOUDS AND SHOWERS...COULD BE ANYWHERE FROM THE MID 70S TO THE MID 80S. THE FORECAST WILL COMPROMISE TOWARD THE MIDDLE.
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&& .LONG TERM /MONDAY THROUGH WEDNESDAY/...
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OVERALL PATTERN IS NOT LOOKING VERY GOOD RIGHT NOW AND IS VERY SIMILAR TO WHAT WE SAW DURING THE WINTER MONTHS. AMPLIFICATION OF THE UPPER LEVEL RIDGE IN THE WEST IS KEEPING THE HOT DRY SUMMER WEATHER OUT IN THE WEST WHILE THE AMPLIFICATION REFLECTS ITSELF AS A DEEP TROUGH OVER THE EASTERN UNITED STATES. THIS TREND CONTINUES TO SEND WAVE AFTER WAVE OF COLD AIR INTO THE FORECAST AREA. AFTER A BRIEF WARM UP INTO THE WEEKEND...WE SEE ANOTHER DEEP DIGGING TROUGH INTO THE EASTERN HALF OF THE COUNTRY MONDAY THROUGH WEDNESDAY. THIS MEANS ANOTHER ROUND OF COOL FALL AND SPRING LIKE AIR EXPECTED OVER THE REGION DURING THIS EXTENDED PERIOD. I WILL KEEP TEMPERATURES IN THE 70S FOR HIGHS AND LOWS IN THE 50S THROUGH THE PERIOD. THIS ROUND ACTUALLY LOOKS A BIT COOLER THAN THE CURRENT ROUND AND I MAY BE ON THE HIGH SIDE FOR TEMPERATURES IN SOME LOCATIONS. WILL NEED TO KEEP AN EYE ON THIS. WITH THE COLD AIR COMES THE THREAT FOR LAKE EFFECT SHOWERS TO DEVELOP ALONG WITH A SYNOPTIC INFLUENCE AS WEAK SURFACE TROUGHS ROTATE INTO THE FORECAST AREA.
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&& .AVIATION /06Z THURSDAY THROUGH MONDAY/... THE CREEPING CLOUD BANK STRIKES AGAIN. LOW CLOUDS CONTINUE TO STREAM SOUTHWEST ALONG THE LAKE SHORE DOWN INTO NORTHWEST PENNSYLVANIA AND NORTHEAST OHIO. EXPECTING CLOUD DECK TO REMAIN PERSISTENT THROUGH THE REST OF THE NIGHT IN THE EAST INTO THE MORNING DAYLIGHT HOURS. MODELS INDICATE LOW LEVEL MOISTURE REMAINS PRESENT DURING THIS TIME PERIOD WITH SIGNIFICANT DRYING TAKING PLACE THIS AFTERNOON. TO THE WEST...BAND OF LOW TO MID LEVEL CLOUDS STREAMING EAST WILL BRING A PERIOD OF SOME CLOUDS TO THOSE AREAS THIS MORNING AND THEN CLEARING. WINDS SHOULD BE LIGHT NORTHERLY THROUGH THE ENTIRE PERIOD ACROSS THE ENTIRE AREA. POSSIBLE FOG IN THE EAST EARLY THIS MORNING DOWN TO MVFR. OUTLOOK...NON VFR IN SHOWERS AND THUNDERSTORMS SAT THRU MON. && .MARINE...
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SMALL CRAFT FLAGS WILL CONTINUE TO FLY THIS MORNING AND POSSIBLY INTO THE AFTERNOON HOURS. WINDS CONTINUE FROM THE NORTH TO NORTHEAST THROUGH THE EARLY AFTERNOON HOURS AND THEN BEGIN TO DIMINISH QUITE RAPIDLY THIS EVENING TO LIGHT TO ALMOST CALM ON THE LAKE. SOUTHWEST FLOW DEVELOPS ON THE LAKE FRIDAY AND INCREASES TO AROUND 10 KNOTS INTO FRIDAY NIGHT AND SATURDAY. WESTERLY FLOW DEVELOPS SATURDAY NIGHT INTO SUNDAY AND INCREASES AS GRADIENT TIGHTENS AHEAD LOW PRESSURE THAT IS EXPECTED TO MOVE THROUGH THE LAKE ON SUNDAY AND SUNDAY NIGHT. LOW PUSHES OFF THE EAST ON MONDAY AND WILL LIKELY NEED MORE SMALL CRAFT ADVISORIES AGAIN MONDAY.
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&& .CLE WATCHES/WARNINGS/ADVISORIES... OH...NONE. PA...NONE. MARINE...SMALL CRAFT ADVISORY UNTIL 10 AM EDT THIS MORNING FOR LEZ143>149. && $$ SYNOPSIS...KOSARIK NEAR TERM...KOSARIK SHORT TERM...KOSARIK LONG TERM...LOMBARDY AVIATION...LOMBARDY MARINE...LOMBARDY

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