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Marine Weather and Tides Willow Street, PA Version 3.4

NOTICE 8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it. 8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue. 12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed. 10/9/2019 Updated the Marine Zones. 9/4/2019 Fixed the weather maps due to NOAA moving them. 7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

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Sunrise 7:22AM

Sunset 5:08PM

Sunday January 17, 2021 12:50 AM EST (05:50 UTC)

Moonrise 10:22AM

Moonset 9:55PM

Illumination 15%

NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

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7 Day Forecast for Marine Location Near Willow Street, PA

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Area Discussion for - State College, PA

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FXUS61 KCTP 170402 AFDCTP

Area Forecast Discussion National Weather Service State College PA 1102 PM EST Sat Jan 16 2021

SYNOPSIS. An upper level low, over Pennsylvania this evening, will lift northeast of the state tonight.

Following today will be a string of similar days with periods of lake effect and upslope snow showers for the Laurel Highlands and Alleghenies of Northern and Western PA. Temperatures will still be slightly above normal during the daytime and above normal at nighttime for the next few days, as well. A front in mid to late week could bring a quick shot of light snow to much of the area.

NEAR TERM /THROUGH SUNDAY/. Some decent squalls still noted on radar late this evening along I-80. However, expect coverage and intensity of snow showers/squalls to diminished overnight, as boundary layer cools and upper low departs. Relatively deep moisture behind departing upper low will support lingering light upslope snow across the Allegheny Plateau late tonight. The best orographic forcing over the Laurel Highlands should support an additional 1-3 inches overnight across Somerset/Cambria counties, with the highest totals along Laurel Ridge.

Elsewhere, large scale subsidence in wake of departing upper low and downsloping westerly flow should result breaking clouds and nothing more than passing flurries along and east of I-99 tonight. An active westerly breeze and nearly neutral temp advection suggests temperatures won't fall much from 00Z readings, with lows ranging from the upper 20s across the Alleghenies, to the low 30s in the Susq Valley.

Light upslope snow will continue to fall over the Alleghenies Sunday, while downsloping subsidence results in partly sunny skies further east. Upper level ridging building into the state will likely result in a midday lull in the orographic snow across the Alleghenies. However, increasing forcing/rising inversion heights are expected toward evening ahead of next shortwave approaching from the Ohio Valley. Have thus ramped up POPs late in the day, mainly across the northwest mountains.

Max temps Sunday will be similar to Saturday's, ranging from the low 30s over the Alleghenies, to the low and mid 40s over the Susq Valley. However, a gusty wind will make it feel colder. Bufkit soundings support gusts between 20-30mph.

SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY NIGHT/. The medium range period will be dominated by seasonably cold air reinforced with the passage of several northern stream shortwave troughs and weak, relatively moisture-starved sfc cold fronts.

Expect scattered to numerous snow showers through the first part of next week across the Allegheny Plateau with moderately deep cold air and the favorable DGZ thermal ribbon base (at just 5-6 kft agl), well within the anticipated lake effect and orographic cloud layer.

Across the Central Ridge and Valley Region, this persistent west-northwest (flow accentuated by weak to moderate mesoscale lift with the occasional passage of upper level troughs) will bring flurries and isolated/narrow bands of snow showers through early week.

Look for an inch or so of snow during numerous 12-hour periods over the NW Mtns and Laurel Highlands (with favored lake effect and orographic locations seeing up to 3 inches at times), while the region SE of the Allegheny Front sees just a light dusting of snow from time to time.

LONG TERM /WEDNESDAY THROUGH SATURDAY/. Medium range guidance all support generally fair weather with diminishing snow showers over the western mountains Wednesday, as ridging builds into the state. A northern stream shortwave and associated surface low are progged to track well north of Pa Thursday. A bit of very light snow appears possible associated with the warm advection ahead of trailing cold front.

Model guidance is in exceptional agreement days 6-7, all indicating a low amplitude trough over the northeast CONUS, bringing seasonably chilly weather and a chance of snow showers over the northwest mountains.

AVIATION /04Z SUNDAY THROUGH THURSDAY/. Expect some snow showers across western areas this evening with occasional VIS drops at BFD, UNV, JST and AOO. Otherwise it will be breezy with generally MVFR conditions except for brief periods of IFR in snow showers over the western airspace. VFR conditions expected through the night over the east at IPT, MDT and LNS.

Outlook .

Sun and Mon . Chance of -SHSN at BFD and JST, otherwise no sig wx.

Tue-Wed . Mainly VFR conditions.

CTP WATCHES/WARNINGS/ADVISORIES. Winter Weather Advisory until 7 AM EST Sunday for PAZ024-033.

SYNOPSIS . Lambert/Dangelo NEAR TERM . Fitzgerald SHORT TERM . Banghoff LONG TERM . Fitzgerald AVIATION . Lambert/Travis

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
CHCM2 - 8573927 - Chesapeake City, MD	39 mi	50 min	W 7 G 8.9	38°F	40°F		1002.5 hPa (+1.4)
DELD1 - 8551762 - Delaware City, DE	45 mi	50 min	W 6 G 11	37°F	31°F		1002 hPa (+1.5)
MRCP1 - 8540433 - Marcus Hook, PA	47 mi	50 min		38°F	40°F		1001.2 hPa (+1.4)
RDYD1 - 8551910 - Reedy Point, DE	47 mi	50 min		37°F	41°F		1001.5 hPa (+1.5)

Wind History for Chesapeake City, MD

(wind in knots)    EDIT      (on/off)   Help

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Lancaster, Lancaster Airport, PA	10 mi	57 min	W 8	10.00 mi	Mostly Cloudy	35°F	26°F	70%	1001.3 hPa
Chester County Airport, PA	21 mi	75 min	Var 6 G 13	10.00 mi	Fair	34°F	28°F	81%	1001 hPa

Link to 5 minute data for KLNS

Wind History from LNS (wind in knots)

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Tide / Current Tables for Port Deposit, Susquehanna River, Maryland

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Tide / Current Tables for Havre de Grace, Susquehanna River, Maryland

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Weather Map

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GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East

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Ground Weather Radar Station

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