766
FXUS61 KCTP 241902
AFDCTP

Area Forecast Discussion
National Weather Service State College PA
302 PM EDT Mon Jun 24 2024

.SYNOPSIS...
High pressure will build overhead tonight bringing a clear and
cool summer night. Heat will build again by Wednesday leading to
a chance of thunderstorms by late in the day and Wednesday
night as a cold front passes. Dry weather on Thursday and Friday
will be followed by another cold front late Saturday or early
Sunday of next weekend.

&&

.NEAR TERM /UNTIL 6 AM TUESDAY MORNING/...
Refreshing air mass across central PA this afternoon with
temperatures in the 70s to lower 80s in most spots and dewpoints
in the upper 40s and 50s. Westerly breezes blowing 15 to 25 mph
are quite pleasant, compared to the stifling heat and humidity
seen last week and weekend.

Fair and seasonable weather with diminishing winds are
anticipated tonight, as high pressure builds into the state.
Latest NAMNest and SREF prob charts target the Alleghenies for
late night valley fog.

&&

.SHORT TERM /6 AM TUESDAY MORNING THROUGH WEDNESDAY/...
The center of high pressure moves off of the Mid Atlantic coast
Tuesday, resulting in a warmer return southwest flow. Still, sfc
dewpoints will remain in the 50s, making higher temperatures
still seem tolerable. Ensemble mean 850mb temps rising to near
17C supports highs mostly in the 80s, to near 90F in the Lower
Susq Valley.

A warm front lifting through the Eastern Grt Lks may result in
a shower or tsra Tuesday night, mainly over the NW Mtns. Surging
PWATs and falling heights ahead of an upstream cold front will
bring a much better chance of widespread showers/tsra Wednesday
afternoon. Latest guidance suggests shower/thunderstorm chances
hold off until late Wednesday afternoon or evening for most of
central pa. A ribbon of relatively strong mid level winds,
combined moderate instability, suggests organized convection and
locally severe weather is possible Wed PM. Latest ensemble
plumes indicates most likely aerial average rainfall Wed will be
around a half inch.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/...
Showers and storms will gradually exit to the the southeast on
Wednesday night as high pressure builds in. The midweek cold
front will reset the cycle similar to what today`s cold front
will do and usher in a similar stretch as Monday & Tuesday.
Thursday and Friday will consist of about 48 hours of lower
dewpoints, temperatures closer to average for this time of year,
and plenty of sunshine. Afternoon highs in the 70s and 80s,
overnight lows in the 50s and 60s (perhaps even upper 40s in the
northern mountains Friday morning), and dewpoints below 60F
will feel especially good with the persistent stretch of heat.

As high pressure shifts to the east on Friday, southerly flow
will support increasing temperatures and moisture into the
weekend. The chance for showers and storms will also ramp up
Saturday as a warm front lifts across the region. By Sunday, a
trailing cold front will bring additional showers and
thunderstorms and usher in another cooler stretch for the start
of July.

&&

.AVIATION /19Z MONDAY THROUGH SATURDAY/...
Mainly VFR conds continue tonight and Tuesday. Evening breezes
will decrease after sunset and remain light on Tuesday.

Outlook...

Tue...VFR, no sig wx expected.

Wed...Restrictions possible in TSRA.

Thu...AM SHRA/TSRA with restrictions possible, drying out late.

Fri...Mainly VFR.

&&

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

&&

$$

SYNOPSIS...DeVoir/Fitzgerald
NEAR TERM...DeVoir/Fitzgerald
SHORT TERM...DeVoir/Fitzgerald
LONG TERM...Banghoff
AVIATION...DeVoir/Bauco