Area Forecast Discussion
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000 FXUS61 KPBZ 170224 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 924 PM EST Tue Jan 16 2018 .SYNOPSIS...
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Snow should end tonight as a cold front exits. High pressure should maintain dry and cold weather for the rest of the work week.
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&& .NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/...
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Snow should continue to taper off from W-E as a cold front exits, upper divergence shifts E, and surface ridging begins to build in. Some additional snow showers could persist in the higher terrain overnight. A lowering temperature inversion and decreasing moisture should end this by morning. Maintained current advisories as is for now with the snow ongoing. Otherwise, patchy stratocu with upper troughing and cold advection should affect the area tonight. Lows should be around zero.
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&& .SHORT TERM /6 AM WEDNESDAY MORNING THROUGH FRIDAY NIGHT/... Mainly dry and cold weather is expected Wed under as the surface ridge builds under the upper trough. A warming trend will commence on Thu as an upper ridge builds across the region. && .LONG TERM /SATURDAY THROUGH TUESDAY/...
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Warm advection will predominate through the weekend as sly low-level flow strengthens ahead of an upper-level wave in the swrn CONUS. Some light precipitation is possible over the weekend as temperature climbs into the 40s and 50s. Warm air will linger until a frontal passage on Mon. The best chance of rain will come on Mon along and ahead of the advancing cold front. Model timing differences continue as they resolve the future storm system with varying strength, but the trend today has been toward a slightly-slower frontal passage. PoP timing was accordingly shifted later by a few hours.
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&& .AVIATION /02Z WEDNESDAY THROUGH SUNDAY/...
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IFR E of I 79 should improve briefly to VFR as snow ends with an exiting cold front and building surface ridging. MVFR stratocu in cold advection and upper troughing should move back in later tonight, and continue through Wed until mixing lifts cigs heights back to VFR levels. .OUTLOOK... Restriction potential returns over the weekend with approaching low pressure.
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&& .PBZ WATCHES/WARNINGS/ADVISORIES... MD...Winter Weather Advisory until 6 AM EST Wednesday for MDZ001. OH...None. PA...Winter Weather Advisory until 1 AM EST Wednesday for PAZ074- 076. WV...Winter Weather Advisory until 1 AM EST Wednesday for WVZ510- 511. Winter Weather Advisory until 6 AM EST Wednesday for WVZ512>514. && $$

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