Area Forecast Discussion
Issued by NWS -- Highlight Changed Discussion --
-- Discussion containing changed information from previous version are highlighted. --
FXUS61 KPBZ 242356
Area Forecast Discussion
National Weather Service Pittsburgh PA
756 PM EDT Mon Oct 24 2016
High pressure will bring dry and cool conditions tonight into
Wednesday. Low pressure will bring showers back into the forecast Wednesday
night through early Friday.
.NEAR TERM /THROUGH TUESDAY/...
Latest satellite observations are in line with model consensus of
dissipating stratocu over the southwest zones as the evening
progresses. Hence, the aforementioned region is favorable for
frost development overnight as the boundary layer decouples and
radiational cooling lowers temperatures to the low to mid 30s.
Otherwise, cool northwest flow will help continue the stratocu
across the northern counties and ridges through Tuesday with a few
light showers along the I-80 corridor. Building high pressure will
help decrease some cloud coverage later Tuesday. Temperatures will
be about 10 degrees cooler than seasonal averages.
.SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY NIGHT/...
Conditions are expected to be clear and cold under high pressure
Tuesday night. Much of Wednesday will be dry but with increasing
clouds as a warm front approaches in advance of deepening Great
Lakes low pressure. Shower chances will increase Wednesday night,
with likely POPs Thursday as system crosses the Upper Ohio Valley.
The mid level system will close off over New England for a time,
keeping cold northwest flow across the region into Thursday night
with scattered showers.
.LONG TERM /FRIDAY THROUGH MONDAY/...
Brief ridging will dry out the region Friday afternoon, but
another trough will already be approaching from the west for
Saturday. Unsettled weather and cooler than seasonal average
temperatures will hold for the weekend into early next week, as a
broad trough will remain over the eastern CONUS. In general,
followed close to the Superblend guidance for construction of the
.AVIATION /00Z TUESDAY THROUGH SATURDAY/...
Conditions will remain largely VFR overnight with a period of MVFR
late tonight/early morning at KFKL and KDUJ as lake-enhanced
light showers/ sprinkles will remain a possibility.
VFR conditions expected Tuesday as the upper trough shifts to the
.OUTLOOK /TUESDAY THROUGH FRIDAY/...
The next chance for general restrictions will late Wednesday into Thursday
as the next disturbance crosses the region.
OH...Frost Advisory from 3 AM to 9 AM EDT Tuesday FOR OHZ039-048-
WV...Frost Advisory from 3 AM to 9 AM EDT Tuesday FOR WVZ004-012.