West Perry, Pennsylvania Weather Forecast Discussion

476
FXUS61 KCTP 082332
AFDCTP
Area Forecast Discussion
National Weather Service State College PA
732 PM EDT Mon Sep 8 2025
.SYNOPSIS...
* High pressure stretches from the Midwest to the mid Atlantic
  region will maintain dry conditions through most or all of
  this week with daytimes featuring partly to mostly sunny skies
  and low humidity. Any early morning valley fog will dissipate
  by 10 AM each day.
&&
.NEAR TERM /THROUGH TUESDAY/...
Fair weather cumulus dots the canvas this afternoon and evening
with clouds dissipating through sunset.
Issued a frost advisory through 12z/Tue for the north central
most tier of counties as temperatures dip once again to 32-35
overnight. Discussion with surrounding offices based on
temperatures dipping below NBM forecasts.
Temperatures through Tuesday morning will be several degrees
below normal.
&&
.SHORT TERM /TUESDAY NIGHT/...
Dry weather with abundant sunshine and light wind will continue
on Tuesday, though temperatures trend a few degrees higher,
with most of Central Pennsylvania seeing highs in the low to mid
70s.
High res models show a light easterly flow setting up Tuesday
night which may result in a stratus deck moving into the far
east and southeast zones by morning. Can not rule a brief period
of drizzle (~10%).
&&
.LONG TERM /WEDNESDAY THROUGH MONDAY/...
West of the above-mentioned clouds into the first half of
Wednesday, abundant sunshine and dry conditions are favored
into the end of the week. Temperatures will trend warmer for
Wednesday thanks to a building ridge aloft. A weak, moisture-
starved cold front will track through the region Wednesday night
into Thursday, but no sensible weather impacts are expected.
Temperatures may drop slightly for Thursday and Friday behind
this front, but a warming trend is expected into the weekend.
Some guidance shows another shortwave moving through Saturday
night into Sunday, potentially bringing a few showers along with
it, but uncertainty remains high.
&&
.AVIATION /00Z TUESDAY THROUGH SATURDAY/...
Very high (~90-100%) confidence in VFR conditions prevailing at
all TAF sites as skies continue to clear out this evening. All
model guidance points towards clear skies and calm winds
overnight, thus valley fog will continue to be a concern across
the northern valleys of Pennsylvania. At this time, low
(~10-20%) confidence in fog restrictions at BFD based on HREF
probabilities, with even lower probabilities at UNV/IPT. Fog is
expected to mix out quickly after sunrise with a light wind and
mostly clear skies; thus, widespread VFR conditions are
virtually certain (~100%) in the 13Z Tue to 00Z Wed timeframe.
Outlook...
Wed-Sat...Mainly VFR. Morning valley fog.
&&
.CTP WATCHES/WARNINGS/ADVISORIES...
Frost Advisory from 2 AM to 8 AM EDT Tuesday for PAZ005-006-
010-011.
&&
$$
SYNOPSIS...Lambert/Bauco
NEAR TERM...Lambert/Tyburski
SHORT TERM...Lambert/Tyburski
LONG TERM...Lambert/Tyburski
AVIATION...NPB

NWS CTP Office Area Forecast Discussion