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Marine Weather and Tides Harrisburg, PA Version 3.4

NOTICE 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 6:10AM

Sunset 8:16PM

Friday August 7, 2020 7:49 AM EDT (11:49 UTC)

Moonrise 9:40PM

Moonset 8:55AM

Illumination 88%

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 Harrisburg, PA

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Area Discussion for - State College, PA

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FXUS61 KCTP 071130 AFDCTP

Area Forecast Discussion National Weather Service State College PA 730 AM EDT Fri Aug 7 2020

SYNOPSIS. Showers and thunderstorms are likely across most of central PA today. Locally heavy rainfall is possible with the greatest risk of flash flooding in the lower Susquehanna Valley. The overall coverage and probability of showers and storms will trend lower (drier) through the weekend with temperatures climbing 5 to 10 degrees above average into early next week.

NEAR TERM /THROUGH TONIGHT/. Overall forecast remains on track. Current storm tracking along I-80 corridor has been persistent/strong and recently ramped its hail core to 1-2 inches. SPC may be adding a portion of the CWA to a MRGL risk with the 13Z update.

Primary focus today will be on heavy rain/FF potential. WPC has upgraded the lower Susquehanna Valley to a SLGT risk ERO (level 2 out of 4). Several factors will contribute to heavy rain/FF threat in this area including but not limited to above normal moisture/PW, slow storm motions/cell training/mergers, and wet antecedent conditions. The dayshift should consider a short- fused FF watch if hires models remain bullish with +RA signal. Scattered to numerous afternoon/evening showers and storms should fade and shift eastward tonight into early Saturday morning.

SHORT TERM /SATURDAY THROUGH SATURDAY NIGHT/. Increasing influence of high pressure sfc and aloft should spell a downward trend in diurnal convection to start the weekend. Pcpn probs derived from a blend of NBM and HREF are generally AOB 20% and focused across the eastern 1/2 to 1/3 of the CTP CWA. MaxT24hourChange will be about +2 to +6 degrees warmer vs. Friday. High confidence in dry conditions tomorrow night with mainly clear skies and light winds suggesting valley fog is possible into AM Sunday.

LONG TERM /SUNDAY THROUGH THURSDAY/. Fair weather should prevail on Sunday.

The longer term will feature a return of warmer weather, with temperatures generally 5-10 degrees above average from Mon through Wed as an upper ridge builds over the Eastern US. Dewpoints climb back to the upper 60s and 70s for Tue and Wed, and perhaps even the mid 70s in the Lower Susq. Combined with temps in the upper 80s to near 90, this would mean Heat Index values take a run at the upper 90s to near 100 in the Lower Susq, so long as the low level moisture doesn't mix out in the afternoon and cause the dewpoint to drop. Continued to knock down afternoon dewpoints from NBM guidance across central and northwestern zones Mon and Wed afternoon, where it looks like drier air will mix down.

Weak forcing will favor isolated, pulse thunderstorms on Monday, mainly in the northwest. A cold front sagging south on Tuesday and Wednesday, combined with increasing humidity, should trigger more numerous showers and thunderstorms both days. Guidance seems to indicate the cold front may stall as it moves through PA, resulting in at least one more day of unsettled weather on Thursday.

AVIATION /11Z FRIDAY THROUGH TUESDAY/. MVFR ceilings covering much of central PA early this morning may drop to IFR for a short while around sunrise before gradually lifting through the mid morning hours.

Bigger issue of the day is thunderstorm impacts. Ongoing isolated convection being driven by weak trough moving through will keep tstms mainly confined between FIG-UNV-IPT through sunrise. But scattered showers/tstms will then begin to develop areawide in the mid/late morning hours and become numerous for the afternoon for central and eastern portions. These storms will bring periodic short-duration cig/vis reductions to terminals with exact timing tough to pin down. Storms will be slow moving as well.

Convective activity should fade and shift eastward during the evening hours into early Saturday morning. Fog restrictions along with low clouds likely Sat morning, but conditions bounce back to VFR quickly.

Outlook .

Sat-Mon . VFR. AM fog poss nrn valleys. Tue . Front approaching fm W. PM TSRA, mainly W.

CTP WATCHES/WARNINGS/ADVISORIES. None.

SYNOPSIS . Steinbugl NEAR TERM . Steinbugl SHORT TERM . DeVoir/Dangelo LONG TERM . Colbert/Banghoff AVIATION . RXR/Banghoff

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
BLTM2 - 8574680 - Baltimore, MD	72 mi	49 min	NE 4.1 G 5.1	74°F	82°F		1018.2 hPa (+0.7)
FSKM2 - 8574728 - Francis Scott Key Bridge, MD	76 mi	49 min	NNE 1.9 G 2.9	74°F			1018.5 hPa (+0.7)
CHCM2 - 8573927 - Chesapeake City, MD	77 mi	49 min	SE 1 G 1.9	73°F	83°F		1019 hPa (+0.6)

Wind History for Baltimore, MD

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NE4 G7

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NE20 G25

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N22 G31

N13 G34

W3 G10

NW8 G15

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W6 G10

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W2 G6

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Harrisburg, Capital City Airport, PA	4 mi	53 min	E 6	4.00 mi	Overcast with Haze	73°F	68°F	84%	1018.8 hPa
Harrisburg, Harrisburg International Airport, PA	8 mi	53 min	E 4	7.00 mi	Overcast	72°F	69°F	91%	1018.5 hPa
Muir Army Air Field / Indiantown, PA	20 mi	53 min	N 0	7.00 mi	Light Rain	69°F	68°F	97%	1019.6 hPa

Link to 5 minute data for KCXY

Wind History from CXY (wind in knots)

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Calm

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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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Wind Forecast for State College, PA (7,2,3,4)

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Ground Weather Radar Station State College, PA

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