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Latest PA Weather Summary:

000
AWUS81 KCTP 020932
RWSCTP
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-
049>053-056>059-063>066-022345-

Regional Weather Summary
National Weather Service State College PA
532 AM EDT Thu May 2 2024

Mainly clear and tranquil conditions will start the day today with
temperatures ranging from 45 to 50 in the coolest rural valleys to
the 50s in other locations.

An ill-defined cold front over Northwestern PA will drift
Southeast across the remainder of the state today with a subtle
wind shift to the northwest and even drier air in its wake. Look
for mostly sunny skies and excellent visibility once again today.

High temperatures today will vary from the mid 60s along the Lake
Erie shoreline to the upper 80s in the Philadelphia metro area.
Clouds will be on the increase Friday morning ahead of the next
system.

Unsettled weather will move into western Pennsylvania later Friday
and Friday night. This unsettled weather pattern is expected to
bring showers and afternoon thunderstorms throughout the weekend.
2 day, weekend rainfall totals will average between one third and
three quarters of an inch.

$$

Latest Forecaster's Discussion:

000
FXUS61 KCTP 021017
AFDCTP

Area Forecast Discussion
National Weather Service State College PA
617 AM EDT Thu May 2 2024

.SYNOPSIS...
-Warm/dry weather with lower humidity continues for today and
most or all of Friday

-Trending unsettled into the weekend with some periods of rain
and thunderstorms Sat/Sun

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
Tranquil conditions with mainly clear skies cover the entire
forecast area early this morning. Surface T/Td spreads of
several deg F or more are negating any notable valley fog
development.

Temps to start the day will be close to 10 degrees above climo
in the warm advection regime ahead of a weak/dry cold front
front that was sliding across the NW Mtns of PA at 09Z.

Daybreak readings will range from 45F to 50F throughout the
higher rural valleys of Central PA, to the mid and upper 50s
across the Lower Susq Valley.

The aforementioned weak cold front will bring primarily a few to
several deg F drop in sfc dewpoints today, yielding another
excellent vsby day with abundant sunshine. This frontal
boundary will settle just south of the Mason Dixon Line by this
afternoon as the associated shortwave passes off the New England
Coast and upper level ridging sharpens and crests over PA
tonight.

Vertical mixing of model 850mb temps in the 12-14C range will
equate to highs ranging from the mid 70s over the N Mtns, to
the mid 80s in the Southern Valleys, which are 10-15 degrees
higher than what we normally see for early May.

A nearly east/west band of low level convergence and higher
humidity is depicted via the latest HREF near the Mason/Dixon
line this afternoon yielding MU CAPE values of a few to several
hundred j/kg.

A weak capping inversion and very dry air above 800mb suggests
any convection is very unlikely there.

The very dry air above the weak inversion aloft supports
undercutting NBM dewpoints this afternoon over the central and
northern part of the forecast area. We continued to employ a
blend of the NBM and the much lower numbers obtained from the
MixedDewpoint Tool.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH 6 PM FRIDAY/...
Sfc and upper level ridge of high pressure will remain over PA
for most or all of the daylight hours Friday. Clouds will
increase across the Western part of the CWA later Friday
afternoon, bringing the chance of a few showers near and to the
west of the RT 219 corridor after 21Z Friday.

Southeasterly flow will develop across much of the CWA Friday
as the center of sfc high pressure exits stage right off the Mid
Atlantic Coast. This will lead to cooler daytime highs - mainly
in the mid to upper 70s.

&&

.LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/...
A frontal boundary will slowly make it`s way eastward from the
Midwest across the Commonwealth this weekend, accompanied by
showers and storms. The best chc of wet weather will be across
western PA Fri night, before expanding eastward Saturday into
Sunday.

Looking to the first half of next week, the front should pull
east of the region on Monday, taking the widespread shower/storm
activity with it. Tuesday into Wednesday, a warm front
approaching from the Ohio Valley should bring an increasing chc
of showers/storms.

&&

.AVIATION /10Z THURSDAY THROUGH MONDAY/...
There will be some high and mid-level clouds passing overhead
this morning as a weak area of low pressure passes to our north
and pushes a weak/dry cold front south across the Mason Dixon
Line. An upper ridge will build overhead through the rest of the
day, producing a clear afternoon. Sfc winds will become W to NW,
and could gust 15-20 kts by aftn. Tranquil weather will persist
through tonight with diminishing winds.

Outlook...

Fri...VFR with increasing high clouds.

Fri evening - Sat AM...Scattered SHRA/TSRA developing from west
to east w/ reductions possible.

Sat PM-Sun...Widespread restrictions across the central and
western mountains due to low cigs. SHRA likely with a chance of
TSRA.

Mon...AM fog/clouds poss. PM -SHRA possible areawide.

&&

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

&&

$$

SYNOPSIS...Lambert/Dangelo
NEAR TERM...Lambert/Fitzgerald
SHORT TERM...Lambert/Fitzgerald
LONG TERM...Gartner/Evanego
AVIATION...Evanego/Colbert

Latest Public Information Statement:

000
NOUS41 KCTP 251342
PNSCTP
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053-
056>059-063>066-260139-

Public Information Statement National Weather Service State College
PA 939 AM EDT Thu Apr 25 2024

To: Subscribers: -NOAA Weather Wire Service -
Emergency Managers Weather Information Network -NOAAPort
Other NWS Partners and NWS Employees From: Greg Schoor,
Chief Marine, Tropical and Tsunami Services Branch

Subject: Hurricane Threats and Impacts (HTI) Mosaic Testing on
April 25, 2024 Weather Forecast Offices (WFOs) in the

National Weather Service (NWS) Southern and Eastern Regions will
commence with Hurricane Threats and Impacts (HTI) threat grid mosaic
testing on Thursday, April 25. Testing will begin at approximately
1500 UTC. Test activities will take approximately 1 hour; however,
NWS dissemination systems may take up to an hour and a half to purge
all test data. All test data is expected to be cleared by 1730 UTC.

For the test, HTI grids will be created for hurricane Wind Threat,
Storm Surge Threat, Flooding Rain Threat, and Tornado Threat at each
participating WFO. Those grids are stitched together into storm-
scale HTI graphics. The HTI Mosaic graphics are available in
Keyhole Markup Language (KML) format on the following webpage:
https://www.weather.gov/hti

The mosaics are also available through the National Digital Forecast
Database and on web pages hosted by the Weather Forecast Offices
(WFOs) affected by the tropical cyclone. These webpages use the
following URL format, where “wfo” should be replaced with the 3
digit identifier for the WFO of interest:

NWS Eastern Region WFOs: https://www.weather.gov/wfo/tropical#hti

NWS Southern Region WFOs:
https://www.weather.gov/srh/tropical?office=wfo#hti

More details on HTI can be found in the Product Description
Document: https://www.weather.gov/media/srh/tropical/PDD_HTI.pdf

Periodic software and hardware testing in preparation for tropical
cyclone events will continue during the remainder of 2024.

For more information, please contact: Jonathan Guseman Warning
Coordination Meteorologist National Weather Service Office State
College, PA jonathan.guseman@noaa.gov

National Public Information Statements are online at:
https://www.weather.gov/notification/

$$