665
FXUS61 KCTP 141741
AFDCTP

Area Forecast Discussion
National Weather Service State College PA
141 PM EDT Tue Oct 14 2025

.SYNOPSIS...
* Cloud cover decreases this evening with some lingering clouds
  in the Lower Susquehanna Valley into Wednesday morning.
* Dry conditions through Thursday, with temperatures tipping
  slightly below climatological averages.
* Above average temperatures begin Friday and continue into the
  weekend, with increasing rain chances this weekend.

&&

.NEAR TERM /THROUGH TONIGHT/...
Moisture-starved cold front continues to approach western
Pennsylvania this afternoon, with dry air behind the frontal
passage allowing for a gradual west-to-east clearing trend
across central Pennsylvania this evening. MaxTs thus far have
underperformed across eastern Pennsylvania due to the
persistent cloud cover, thus have knocked a few degrees off of
temperatures throughout the rest of the evening based on current
observations and blending with the most recent NBM model
guidance.

Clearing skies are expected overnight, with radiational cooling
across the western half of the forecast area with high
confidence, allowing for low temperatures into Wednesday
morning dipping into the upper 30s to lower 40s. Slightly more
uncertainty with regards to the cold frontal passage timing
across southeastern Pennsylvania, thus cooling might not be as
efficient with low temperatures into the lower 50s. These low
temperatures will generally be above-average for the middle of
October across all of central Pennsylvania.

&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/...
Relatively cool temperatures are progged through the middle
part of the week behind the cold front, with dry air allowing
for no precipitation mentions through Thursday. Cool overnight
periods will bring about frost/freeze concerns, mainly Thursday
night into Friday, across the Lower Susquehanna Valley where
seven zones remain in the growing season (see latest PNSCTP for
update on growing season). Confidence on frost/freeze concerns
across the Lower Susquehanna Valley warrants continued mentions
in the HWO and will need to be monitored over the next few
forecast cycles for headline decisions.

Daytime dryness will peak on Thursday with room for downside to
minRH in the 25-35% range. 20-25 mph wind gusts particularly
over the eastern portion of the area could create some concern
for fire weather partners depending on how quickly dead fine
fuels can cure post the cool/wet/dank Columbus Day and weekend
rainfall.

&&

.LONG TERM /FRIDAY THROUGH MONDAY/...
Little change in the long-term forecast cycle for the Tuesday
afternoon update. Departing high pressure will allow for mostly
dry conditions through Saturday; however, a slight increase in
moisture has been progged by some model guidance Saturday
morning, allowing for slight chances of precipitation to be
introduced in this timeframe. Better chances for precipitation
comes on Sunday and into the beginning of next week.

Previous Discussion, Issued 3:51 AM EDT 10/14/2025:
Mild trend ramps through the weekend with max temps 65-75F
behind an increasing southerly return flow on the backside of
departing sfc high pressure. Latest model data continues to
favor dry/rain-free wx through Saturday.

Strong upper trough and well defined frontal system should tap
Gulf moisture moving east of the Mississippi River. This system
will most likely bring rain/showers to CPA Sunday through Sunday
night/early Monday. Timing could easily shift +/- 12hr with GFS
and EC showing their typical fast/slow bias at this range, but
overall the models are in pretty good agreement showing the
frontal rainfall on Sunday transitioning to a cooler, breezy
post-frontal NW flow to begin next week.

&&

.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
MVFR stratus has been very slow to dissipate today, though
satellite imagery shows the northwestern edge starting to slide
southeastward. VFR conditions have returned to BFD and all other
airfields will see ceilings slowly rise through the rest of the
afternoon. After a brief period of mainly clear skies this
evening, high clouds increase in coverage once again overnight
ahead of an approaching shortwave. Most sites will remain VFR,
but model soundings suggest a period of MVFR ceilings is
probable at BFD and JST.

Skies clear out during the day on Tuesday and VFR conditions
will return area-wide. Winds will be out of the northwest at 5
to 10 knots with a few gusts to 20 knots possible in the
afternoon at MDT and LNS.

Outlook...

Wed...VFR.

Thu...VFR, still breezy.

Fri-Sat... VFR

Sun...Restrictions possible in SHRA. Low probability of a
thunderstorm over northwest PA.

&&

.CTP WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$

SYNOPSIS...NPB
NEAR TERM...NPB
SHORT TERM...Steinbugl/NPB
LONG TERM...Steinbugl/NPB
AVIATION...Bauco