York, Pennsylvania 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

098
FXUS61 KCTP 142343
AFDCTP

Area Forecast Discussion
National Weather Service State College PA
743 PM EDT Thu Aug 14 2025

.SYNOPSIS...
* Front stalling over the CWA will be dissipating, but isolated
  showers and thunderstorms are possible each afternoon through
  Saturday
* Drier air over the northern tier should keep it dry there
* New cold front drops in from the north on Sunday, generating
  storms, especially for the northern half of PA

&&

.NEAR TERM /UNTIL 7 AM FRIDAY MORNING/...
An isolated shower or two are still present across central
Pennsylvania this evening; however, most places are
experiencing a pleasant eventing. Clearing comes to almost all
of Central PA with fog again possible tonight, even with
slightly lower dewpoints in the Alleghenies. Winds will remain
calm overnight which will further promote fog development.
Temperatures tonight will dive into the mid 50s in the northwest
mountains near Bradford, and stay near 70 in the Lower
Susquehanna Valley.

&&

.SHORT TERM /7 AM FRIDAY MORNING THROUGH 6 PM FRIDAY/...
Friday morning will be the coolest of this stretch as high
pressure moves in across New England and the northern Mid-
Atlantic region. The front from Thursday will have moved well
south of Pennsylvania and be draped over central Virginia.
Sunshine and warm temperatures may destabilize the atmosphere
enough for a diurnal shower or two, meaning 20-30 PoPs are
warranted Friday afternoon. Dewpoints will stay much higher than
earlier expectations, as the true drier/cooler airmass stops
halfway thru the CWA.

&&

.LONG TERM /FRIDAY NIGHT THROUGH THURSDAY/...
While the current cold front dissipates very slowly, another
will approach on the NW flow rolling over the big central US
upper ridge. That second front shouldn`t arrive until Sun. But,
Sat may not be entirely dry (as previously advertised) with
dewpoints still in the 60s everywhere - and upper 60s SE of UNV.
Much of the CWA has a 20 PoP painted over it.

The Sunday cold front will touch off many more SHRA/TSRA esp in
the N. The sfc high behind it should be strong enough to push
the front to the srn border, but it will then linger nearby. Not
much, if any, of a reprieve from SHRA/TSRA is expected with a
constant flow from the WNW and upstream moisture streaming in
every 18-24 hrs. TC Erin is expected to deepen extremely but
remain off-shore as she re-curves into the nrn Atlantic mid-
late week, and PA will not be affected.

&&

.AVIATION /00Z FRIDAY THROUGH TUESDAY/...
Clearing skies are expected overnight and VFR conditions are
likely at all TAF sites. Some patchy valley fog will form with
mainly clear skies and light winds, but the probability is too
low to include any fog in the TAFs for now. There remains a low
chance for a pop up shower or thunderstorm in the southeast
tomorrow afternoon. Prob30 groups have been included at LNS and
MDT to highlight the low confidence in impactful thunderstorms
during the afternoon on Friday.

Outlook...

Fri...AM fog possible; otherwise VFR.

Sat...Mainly VFR.

Sun...Mainly VFR, but chance of a shower or storm north late.

Mon...Chance of a shower early, then clearing.

Tue...A couple of showers possible, mainly west of UNV.

&&

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

&&

$$

SYNOPSIS...Dangelo
NEAR TERM...Bowen
SHORT TERM...Bowen
LONG TERM...Dangelo
AVIATION...Bauco/Bowen