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Lawrenceville Weather

Area Forecast Discussion

FXUS61 KBGM 271049

Area Forecast Discussion
National Weather Service Binghamton NY
649 AM EDT Thu Apr 27 2017

A southerly flow of mild air will give the area mostly sunny 
skies today along with high temperatures ranging from the middle
70s to lower 80s in most area. The passage of a cold front 
overnight will produce scattered showers and thunderstorms with 
coverage most widespread from the Finger Lakes region to the 
western Mohawk Valley. Dry conditions will return on Friday.


410 am update...
GOES-16 fog channel shows a stratus deck continuing to back
westward into the region. The stratus currently covers much of
the western Catskills, northeast Pennsylvania and in central New
York from southern Oneida county south across Norwich to the
local Binghamton area. This deck will slowly move westward for 
a couple of more hours then once the sun rises progress will 
stop and start to mix out from west to east. Areas in southern 
Sullivan and Pike counties may stay mostly cloudy for much of 
the day.

Surface low pressure in the western Great Lakes will bring a  
southerly flow of mild air to the region. Mostly sunny skies and
T925 around 20C will bring high temperatures in the lake plain
into the lower 80s with readings across much of central New York
into the middle to upper 70s. In the far southeast where low
clouds will linger highs will only reach the upper 60s.


Tonight...A weakening cold front will move through the region
overnight. Best forcing and moisture with this feature will
reside from the Finger Lakes region to the western Mohawk  
Valley. Models indicate some CAPE this evening primarily in the
Finger Lakes region. Soundings show the potential for some 
gusty winds with any thunderstorms, mentioned gusty winds in 
forecast. Went likely POPS in the northern forecast area and 
chance elsewhere. Most of the activity will occur between 8pm 
and 2am. 

Friday...High pressure will briefly reside over the area on
Friday with dry conditions returning and high temperatures in
the 70s.

Friday night through Saturday night...A strong southeast ridge 
develops as a deep upper level trof moves from the four corners 
region to the mid west. A wave moving through the central Great 
Lakes late Friday night may trigger scattered showers primarily 
over the western forecast area after midnight. On Saturday, a
combination of the trailing surface trof as the low lifts into
eastern Canada, diurnal instability and mid level waves in
southwest upper level flow will keep the chance for showers and
thunderstorms across the region. Models indicate instability
primarily in the central/southern forecast area so kept mention
of thunder only here. Highs on Saturday will range from around
70 in the north to around 80 in the Wyoming Valley. Saturday 
night may be primarily dry as high pressure in eastern Canada
briefly builds south over the area.


420 AM EDT Update...
No significant changes were made to the previous forecast. The
previous forecast is in great shape. For more information please
read the previous forecast discussion below.

Previous forecast discussion...
Used superblend for this period. All three synoptic models show
a major cyclone tracking northeast through the western Great 
Lakes Sunday and Sunday night. A warm front will cross the 
region Sunday with a sharp cold front crossing NY and PA Monday 
and Monday night. Will keep chance for showers and thunderstorms
across the region on Sunday with mainly showers Sunday night. 
Have likely POPS for Showers and thunderstorms on Monday into 
Monday evening with the sharp cold front. Then behind this 
system it gets chilly with lingering light rain showers Tuesday.


The stratus deck has managed to develop further west than
previously thought and is dominating NEPA and much of central
NY. This deck is still pushing westward this morning and is
ranging from fuel alternate to IFR. Expect this deck to lift
around 15Z. All taf sites should become VFR by mid morning. A
storm system is expected to move across the region late this
evening and will likely bring TSRA to all taf sites except KAVP.
Light rain showers will likely follow. 

Winds will be light and variable for the next couple of hours, 
then become S/SE around 8 to 12 knots with gusts around 20 


Friday afternoon and Friday night...Mainly VFR.

Saturday through Monday...Although VFR is likely the majority of
the time, rounds of showers or thunderstorms could bring
occasional restrictions.