FXUS61 KBGM 251046
Area Forecast Discussion
National Weather Service Binghamton NY
646 AM EDT Sat Mar 25 2017
Periodic light rain will continue over the next few days, as
moisture and several upper air disturbances overrun a nearby frontal
zone. For the most part, seasonably chilly conditions will
prevail this weekend, with temperatures mainly in the thirties
and forties. Milder air should push in on Monday, with highs
back into the fifties.
.NEAR TERM /UNTIL 6 PM THIS EVENING/...
4 am update... A tight low-level thermal gradient exists across
the forecast area this morning (30s in CNY and upper 40s-mid 50s
in NEPA), owing to a W-E frontal zone draped along the PA/NY
border. In the meantime, areas of light rain are also
traversing CNY, near and to the north of the aforementioned
For today, the surface front should continue to push southward,
as a large eastern Canadian high pressure ridge builds towards
the southeast. As a result, colder air north of the boundary
will build over the forecast area. This will keep readings
mainly in the 30s to near 40 over CNY, with late morning highs
in the 50s across parts of NEPA, before temperatures start to
fall during the afternoon.
As for precipitation, light rain will continue through the
midday hours, mainly over CNY, as mid-level thermal advection
forcing continues. The forced ascent should weaken for a time by
later today, as somewhat drier air also attempts to build
southward from Ontario/Quebec, resulting in a diminishing trend
for rainfall through the afternoon.
.SHORT TERM /6 PM THIS EVENING THROUGH MONDAY/...
415 am update... By tonight, the surface front is expected to
have pushed well southward towards the Delmarva region. Weak
forcing and shallow moisture will remain in place over CNY/NEPA,
resulting in lots of lower clouds, along with patchy light
rain/drizzle. Surface temperatures may drop to near or just
below 32F over northern and eastern parts of the forecast area
(mostly the southern Tug Hill, Mohawk Valley, and Catskill
regions), with spotty freezing drizzle possible.
Sunday, more of the same, with patchy light rain/drizzle,
especially in the morning. Afternoon highs should range from the
30s in the Catskills and Poconos to the mid 40s over the Finger
Sunday night-Monday, a large-scale upper trough should approach
the region from the west, as the mid-Atlantic surface front
begins to move back northward as a warm front. Thus, forced lift
should improve again over CNY/NEPA, with rain becoming more
widespread, especially later Sunday night into Monday. As for
temperatures, although they may remain marginally cold enough
for spotty light freezing rain in the Catskills late Sunday
night into Monday, they should be warming with time overall, as
the cold wedge north of the front begins to erode from the
south and west.
.LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
300 AM EDT Update...
The start of the extended forecast will be an active one as multiple
shortwaves are forecast to move across the region. Made minor
adjustments to the previous forecast. High pressure is expected to
move into the region on Wednesday and provide a break to the wet
pattern we are having. The next storm system to impact the region
will move start to move into the region early Friday morning and may
create showers through the weekend.
Temps during the forecast period will be at or slightly above the
.AVIATION /12Z SATURDAY THROUGH WEDNESDAY/...
Poor flight conditions are expected for the next 24 hours as a
frontal boundary is expected to linger across central NY and
northeast PA. IFR visbys and ceilings are expected at all TAF
sites today. Light rain will also accompany this boundary and
patchy fog can also be expected throughout the period. Sfc winds
will be light and variable through the period.
Saturday night through Tuesday...Restrictions likely from waves
of rain as frontal boundary waffles over the area. Freezing
rain also briefly possible late Saturday night KSYR-KRME.
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