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Select Your Area NWS Weather Forecast Office
NWS Area Weather Forecast Discussion
County Warning Area [CWA]: PBZ
Regional NWS Weather Office: Pittsburgh, PA

FXUS61 KPBZ 181817

Area Forecast Discussion
National Weather Service Pittsburgh PA
217 PM EDT Thu Oct 18 2018

Anticipate dry and cool weather outside of the upcoming weekend
period. Chances of rain will increase Friday night as one system
moves through. The second system will increase rain and snow
chances Saturday afternoon into Sunday morning.


Beyond cool NW flow producing stratocu to the east of Lake
Erie...expect clear skies to persist. Slight ridging aloft plus
increasing surface pressure and clear skies will lead to another
cold night...with near freezing temperatures across the area.
However...enough wind mixing will prevent any sort of deeper
freeze and need for any freeze warning products.


The upper level trough will approach from the west...reaching
the western Great Lakes by Friday afternoon. Clouds will slowly
increase through the afternoon with southwest sfc winds...but
dry weather will continue.


The first upper level disturbance will cross Friday
night...producing light rain showers across the area. A second
disturbance and more potent surface cold front will quickly
follow Saturday afternoon and provide more chances for
precipitation. Rapid cooling at the 850mb level Saturday evening
will allow snow to quickly mix with rain...and continue to turn
over to snow for most areas by Sunday morning. Dry air working
in behind the system will quickly squelch precipitation chances
during the daytime Sunday...save for isolated lake effect light
rain and snow showers.

Cool and dry weather resume through the next work week.


While some low VFR stratocu will continue through the afternoon
hours at FKL/DUJ, by sunset all sites are expected to be clear.
Winds should remain under 10 kt from the northwest, with winds
backing to the southwest overnight.

Widespread restrictions and rain are likely with a Fri night/Sat
cold front.





Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather