Area Forecast Discussion
Issued by NWS State College, PA

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235 FXUS61 KCTP 172015 AFDCTP Area Forecast Discussion National Weather Service State College PA 315 PM EST Wed Jan 17 2018 .SYNOPSIS... High pressure will build into the region through Thursday, bringing fair skies but cold temperatures. Temperatures will moderate to near normal Friday, then climb above normal over the upcoming weekend with mainly dry weather continuing. && .NEAR TERM /UNTIL 6 AM THURSDAY MORNING/... Some lingering flurries are falling over the western higher elevations where satellite shows some low clouds that look very thin in the high resolution GOES R visuals. Strong, deep-layer subsidence beneath left entrance region of a SW upper jet will combine with a light-moderate westerly surface flow of much drier air to bring clearing and several hours of sunny skies to the Central Mountains this afternoon. Overcast layered clouds in the east will gradually improve as ceilings rise above 100,000` during the afternoon with some sunshine possible later in the day. A fair but very cold overnight is in store. A westerly breeze will keep us from optimal radiational cooling, but we will still see lows range from the single digits over the north to lower teens along the Mason Dixon line. && .SHORT TERM /6 AM THURSDAY MORNING THROUGH 6 PM THURSDAY/... Mostly sunny skies will occur Thursday with temperatures rebounding to near or slightly below normal. Westerly flow will freshen and gust between 20-25 mph at times. Gust as high as 30 to 35 mph will be possible across central and western areas in the afternoon as high pressure builds to our south && .LONG TERM /THURSDAY NIGHT THROUGH WEDNESDAY/...
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High pressure moving off the southeast coast late in the week will bring mild and dry weather to the area late in the week. A deep low will swing a cold front across the area late Monday and early Tuesday next week. Did slow the front down some, based on new models.
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&& .AVIATION /20Z WEDNESDAY THROUGH MONDAY/... There continues to be some lingering MVFR over my western higher elevation terminals with even some very light snow causing visibilities under 2 miles at JST. Drier air will limit the extent of the low clouds moving out of the mountains, but these high elevation sites may be stubborn to improve despite an overall fair weather pattern. It will be breezy with gusts in the 10-20 mph range. Outlook... Thu...Mainly VFR. Breezy. Fri-Sun...Mainly VFR. Mon...Reduced conditions with rain showers associated with an approaching cold front. && .HYDROLOGY...
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The threat of ice jamming is diminishing. Dry and colder weather into mid week will form additional ice as stream flows and open channels decrease. Another warm up is expected by the end of the week into the weekend with rain to accompany a frontal system early next week. Dewpoints not fcst to be as high as last Friday evening, so expecting less rain and runoff.
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&& .CTP WATCHES/WARNINGS/ADVISORIES... None. && $$ SYNOPSIS...La Corte NEAR TERM...La Corte SHORT TERM...La Corte LONG TERM...Martin AVIATION...La Corte HYDROLOGY...Martin is the U.S. government's official web portal to all federal, state and local government web resources and services.