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Latest PA Weather Summary:


000
AWUS81 KCTP 182202
RWSCTP
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-
049>053-056>059-063>066-191215-

Regional Weather Summary
National Weather Service State College PA
502 PM EST Mon Jan 18 2021

Lake effect snow showers will continue through this evening in
northeast Pennsylvania and also across the western third of the
Commonwealth, with a coating to up to 3 inches of accumulation
expected. Elsewhere, skies will range from partly to mostly cloudy
with isolated flurries. Low temperatures will be in the 20s.

Only isolated light snow showers are expected across the west on
Tuesday, with little or no accumulation. Expect dry conditions
elsewhere. Highs on Tuesday will range from the upper 20s to lower
40s.

Another period of lake effect and upslope snow is expected
Tuesday night into Wednesday, with up to several inches of snow
possible in the Lake Erie snowbelt. A few heavier snow showers or
squalls are possible on Wednesday, mainly across the northern half
of the Commonwealth.

$$

Latest Forecaster's Discussion:


000
FXUS61 KCTP 182057
AFDCTP

Area Forecast Discussion
National Weather Service State College PA
357 PM EST Mon Jan 18 2021

.SYNOPSIS...
A relatively weak upper-level weather disturbance and a consistent,
mean westerly wind flow at low levels will bring periods of snow
showers across the northern and western mountains tonight. A more
potent upper air trough will push southeast across the Great Lakes
later Tuesday night and Wednesday accompanied by another round of
snow showers, then gusty winds and quite cold wind chills in the
single digits and teens during the day Wednesday.

Temperatures will rebound to near or several degrees above normal
for Thursday, but the wind will remain gusty.

&&

.NEAR TERM /UNTIL 6 AM TUESDAY MORNING/...
Regional radar mosaic shows very cellular and generally brief, light
snow showers drifting ESE across much of the region.

The exception was near and to the north of Route 6 in our northern
tier counties. Across that region, expect an additional coating to 2
inches late today through tonight.

The nose of a moderately strong (75 kt), though compact jetlet will
move from southern Indiana east to the Central Appalachians by late
tonight. Small areas of 925-700 mb Omega combined with a nearly
orthongal llvl upslope component into the Laurels, and the upper
half of the cloud layer occupyig the favorable DGZ will result in a
general 1 inch of snow in the valleys, and 2-3 inches on the ridge
tops of Somerset and Cambria Counties.

Min temps overnight will range through the 20s.

Breaks in the clouds and any significant drop in the wind could lead
to temps 2-4 deg F colder than our current fcst to the SE of the I-
81 corridor.

&&

.SHORT TERM /6 AM TUESDAY MORNING THROUGH 6 PM TUESDAY/...
Weak ridging, subsidence and slight warming/drying of the bylr
Tuesday will lead to flurries at best near the Allegheny Front, with
only isolated snow showers across the NW zones and Laurel Highlands.
Skies should vary form SCT-BKN across the SE zones.

Expect any snow accum after 12Z Tuesday to be limited to a coating-1
inch over Western Cambria and Somerset Counties, with perhaps 2
inches locally to the north and west of Warren.

Minor difference in high temps will be seen Tuesday compared with
today`s (Monday`s).

&&

.LONG TERM /TUESDAY NIGHT THROUGH MONDAY/...
A lake-effect snow and upslope snow scenario sets up for Tuesday
night into Wednesday. An upper-level shortwave with ample northwest
flow will help to fuel these snow showers, with frequent snow
squalls possible throughout the day. Snow accumulations will be
roughly confined to the north and west of the I-80/I-99 corridor.
Winds will also be breezy on Wednesday, with gusts up to the upper
20s and lower 30s during the day.

Weak upper-level ridging and mainly zonal flow builds over
Pennsylvania starting Thursday. Lake-effect snow showers are still
possible over far northwestern Pennsylvania during this time, but
the rest of the state will see little in the way of precipitation. A
dying cold front sweeps through the area on Thursday, but will not
bring any precipitation. An upper-level ridge and surface high
pressure system builds over the state for the weekend, yielding dry
and pleasant weather.

The next weather-maker arrives for Monday. Currently, the GFS and
Euro disagree on track of the low-pressure system and thus the
timing of arrival of precipitation. At the moment it looks like snow
showers are possible for Monday, though a lot of uncertainty remains
with this system.

&&

.AVIATION /21Z MONDAY THROUGH SATURDAY/...
Prevailing, mean westerly winds in the low to mid levels of the
atmosphere will continue to produce overcast skies (mainly MVFR),
and scattered to numerous snow showers over the western airfields
over the next several days. Period

As mixing deepens late Tuesday morning/Tuesday afternoon, cigs will
lift by several hundred feet or more with wind gusts increasing into
the teens to low 20s (kts).

Expect prevailing VFR at MDT and LNS, with overnight through mid
morning MVFR and afternoon VFR at KUNV, KAOO, and KIPT. Frequent
IFR in snow showers will be found at BFD and JST, interspersed by
ocnl MVFR and brief LIFR.

Wednesday will contain the highest wind gusts form the WNW, likely
exceeding 25 kts in most places of Central PA and the Susq Valley
airfields and perhaps up to 35 kts at KJST.


Outlook...

Wed...Gusty winds of 25-35 kts. Chance of -SHSN at BFD and JST,
otherwise no sig wx.

Thu...Chance of -SHSN Western Mtns, SCT -RASN throughout the Central
and SE Valleys of the state.

Fri-Sat...Chance of -SHSN at BFD and JST, otherwise no sig wx.

&&

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

&&

$$
SYNOPSIS...Lambert
NEAR TERM...Lambert
SHORT TERM...Lambert
LONG TERM...Gutierrez
AVIATION...Lambert

Latest Public Information Statement:


000
NOUS41 KCTP 181331
PNSCTP
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053-056>059-
063>066-190131-

Public Information Statement
National Weather Service State College PA
831 AM EST Mon Jan 18 2021

...SNOWFALL REPORTS...

Location Amount Time/Date Provider

...Pennsylvania...

...Bedford County...
Wolfsburg 0.1 in 0700 AM 01/18 COOP

...Cambria County...
Geistown 2.5 in 0750 AM 01/18 COCORAHS

...Cameron County...
Emporium 2.6 S 1.0 in 0730 AM 01/18 COCORAHS
Stevenson Dam 1.0 in 0700 AM 01/18 COOP

...Centre County...
Port Matilda 2.2 ESE 0.3 in 0700 AM 01/18 COCORAHS
State College 0.3 in 0700 AM 01/18 COOP

...Clearfield County...
Grampian 2.0 in 0600 AM 01/18 COOP

...Elk County...
Glen Hazel 2NE EB Dam 2.0 in 0700 AM 01/18 COOP
St. Marys 1.7 SE 0.9 in 0600 AM 01/18 COCORAHS

...Huntingdon County...
Huntingdon 1.3 N 0.1 in 0700 AM 01/18 COCORAHS

...McKean County...
Kane 3.0 in 0700 AM 01/18 COOP

...Potter County...
Coudersport 7SE 2.0 in 0700 AM 01/18 COOP
Roulette 1.8 NNE 1.8 in 0700 AM 01/18 COCORAHS

...Somerset County...
Hidden Valley 0.3 ENE 4.5 in 0500 AM 01/18 COCORAHS
Hidden Valley 4.3 in 0800 AM 01/18 COOP
Somerset 2.2 in 0800 AM 01/18 COOP

...Sullivan County...
Laporte 1.0 in 0709 AM 01/18 COOP

...Warren County...
Warren 2.5 in 0700 AM 01/18 COOP
&&

**METADATA**
:1/18/2021,0700 AM, PA, Bedford, Wolfsburg, , , 40.0333, -78.5167, SNOW_24, 0.1, Inch, COOP, 24 hour snowfall,
:1/18/2021,0750 AM, PA, Cambria, Geistown, , , 40.2899, -78.8698, SNOW_24, 2.5, Inch, COCORAHS, 24 hour snowfall,
:1/18/2021,0730 AM, PA, Cameron, Emporium 2.6 S, , , 41.4734, -78.2433, SNOW_24, 1, Inch, COCORAHS, 24 hour snowfall,
:1/18/2021,0700 AM, PA, Cameron, Stevenson Dam, , , 41.4, -78.0167, SNOW_24, 1, Inch, COOP, 24 hour snowfall,
:1/18/2021,0700 AM, PA, Centre, Port Matilda 2.2 ESE, , , 40.7912, -78.0118, SNOW_24, 0.3, Inch, COCORAHS, 24 hour snowfall,
:1/18/2021,0700 AM, PA, Centre, State College, , , 40.7935, -77.8672, SNOW_24, 0.3, Inch, COOP, 24 hour snowfall,
:1/18/2021,0600 AM, PA, Clearfield, Grampian, , , 40.9666, -78.5871, SNOW_24, 2, Inch, COOP, 24 hour snowfall,
:1/18/2021,0600 AM, PA, Elk, St. Marys 1.7 SE, , , 41.4107, -78.5348, SNOW_24, 0.9, Inch, COCORAHS, 24 hour snowfall,
:1/18/2021,0700 AM, PA, Elk, Glen Hazel 2NE EB Dam, , , 41.5667, -78.6, SNOW_24, 2, Inch, COOP, 24 hour snowfall,
:1/18/2021,0700 AM, PA, Huntingdon, Huntingdon 1.3 N, , , 40.5152, -78.0151, SNOW_24, 0.1, Inch, COCORAHS, 24 hour snowfall,
:1/18/2021,0700 AM, PA, McKean, Kane, , , 41.6833, -78.8, SNOW_24, 3, Inch, COOP, 24 hour snowfall,
:1/18/2021,0700 AM, PA, Potter, Roulette 1.8 NNE, , , 41.8076, -78.1414, SNOW_24, 1.8, Inch, COCORAHS, 24 hour snowfall,
:1/18/2021,0700 AM, PA, Potter, Coudersport 7SE , , , 41.7392, -77.971, SNOW_24, 2, Inch, COOP, 24 hour snowfall,
:1/18/2021,0800 AM, PA, Somerset, Somerset, , , 40, -79.0833, SNOW_24, 2.2, Inch, COOP, 24 hour snowfall,
:1/18/2021,0800 AM, PA, Somerset, Hidden Valley, , , 40.042, -79.2566, SNOW_24, 4.3, Inch, COOP, 24 hour snowfall,
:1/18/2021,0500 AM, PA, Somerset, Hidden Valley 0.3 ENE, , , 40.0584, -79.2616, SNOW_24, 4.5, Inch, COCORAHS, 24 hour snowfall,
:1/18/2021,0709 AM, PA, Sullivan, Laporte , , , 41.4247, -76.4925, SNOW_24, 1, Inch, COOP, 24 hour snowfall,
:1/18/2021,0700 AM, PA, Warren, Warren, , , 41.8438, -79.15, SNOW_24, 2.5, Inch, COOP, 24 hour snowfall,

Observations are collected from a variety of sources with varying
equipment and exposures. We thank all volunteer weather observers
for their dedication. Not all data listed are considered official.

$$