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Marine Weather and Tides Refton, PA Version 3.4

NOTICE 1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17. 1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

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Sunrise 6:30AM

Sunset 6:02PM

Friday March 5, 2021 2:50 PM EST (19:50 UTC)

Moonrise 12:32AM

Moonset 10:26AM

Illumination 54%

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 Refton, PA

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Area Discussion for - State College, PA

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FXUS61 KCTP 051935 AFDCTP

Area Forecast Discussion National Weather Service State College PA 235 PM EST Fri Mar 5 2021

SYNOPSIS. A brisk cold spell will last through the weekend and precede a big warmup during the first half of next week. A frontal system will bring the chance for rain Thursday into next weekend.

NEAR TERM /THROUGH TONIGHT/. Plume of best moisture is starting to shift northward, finally, and decreasing the clouds over the Laurels, and increasing them over the northern Alleghenies. Dewpoints are on track despite a significant drop over the NErn mtns where IPT, LHV and N38 have all touched or dropped below 0F.

One final trough/push of colder air will move down through Central PA overnight. This will renew SHSN over the Alleghenies, and could make a dusting to an inch there. Few if any clouds should make it down into the lower Susq. If they do, they'll be sct and high-based. The wind will continue all night, but gusts should peak this evening and early tonight around and just before the passage of the trough. Mins will be in the upper teens N and m20s S.

SHORT TERM /SATURDAY/. The surge of cold air will keep it cold and breezy/gusty through the day on Sat. But, the SHSN and flurries will slowly decrease into the aftn as the inversion lowers a bit and wind backs a little in the llvls. The sfc high moving down from central Canada will be centered over the Upper Great Lakes on Sat, and continue moving to the SE. The best chc for more sun than clouds is the srn tier. Maxes should hold a deg or two lower than Fri.

LONG TERM /SATURDAY NIGHT THROUGH FRIDAY/. With brisk and cold northwest flow remaining in place through the weekend, we were keen to make the following minor adjustments to the previous forecast in accordance with the prevailing pattern:

1. Trimmed a few degrees from daytime highs Sun. 2. Increased POPs for passing snow showers in the northern mtns 3. Added/subtracted a few degrees from minTs Sat/Sun night 4. Lowered dewpoints given abnormally dry/modified arctic air

Snow accumulation by the end of weekend should range from a coating to an inch or so across the northern tier of CPA. Most of the accums will occur at night as the strong March sun mitigates daytime impact. Dry air and mostly frozen Lake Erie will both contribute to limited LES.

1030+mb high pressure builds into the area on Sunday ending snow shower activity. We see some risk to the downside for lows Sunday night with potential for ideal radiational cooling as sfc ridge axis moves into CPA.

In the big picture, our ensemble prediction systems have remained consistent of late, showing a significant warming for next week, as a deep eastern Canadian vortex fills and shifts into the north Atlantic.

This will allow ridging to push towards the eastern CONUS, with our low-level flow backing into the W and SW, heralding the arrival of Spring- like temperatures (highs ranging from the 50s-mid 60s by the middle of next week). Although much of this time frame looks dry from this early vantage point, both moisture and model uncertainty look to be on the increase towards the end of the forecast period (late Wed. onward), so the threat of showers could be looming by that time. Overall, though, the main theme is for a trend towards pleasant, early Spring type weather from Mon. through Wed.

AVIATION /19Z FRIDAY THROUGH WEDNESDAY/. Wind is the biggest story, with frequent gusts into the m-u20s which should peak this afternoon and evening. The wind should decrease a little tonight and a little more Saturday and even more on Sunday.

Low clouds and snow showers lingered significantly longer than expected over JST. However, we are still expecting the clouds clouds have begun the anticipated rise northward. A weak trough will drop across the region late tonight. The lift from the trough combined with the continued influx of lake moisture will generate snow showers over the nrn mtns (mainly BFD) tonight with short reductions into IFC. The SHSN should dissipate Sat AM. Most terminals will have just MVFR cigs later tonight with only a passing flurry or two. Of course, MDT and LNS will likely stay VFR.

High pressure will continue to press south and east from central Canada and the Upper Great Lakes. Sunday dries out completely with not much in the way of clouds or weather.

Outlook .

Mon-Wed . Occasional M/VFR clouds NW, otherwise no sig wx.

FIRE WEATHER. Spring fire season is starting in parts of CPA. Gusty winds and low RHs are forecast for the weekend. Many locations, especially across the southern half to two-thirds will drop into the 20-30pct range of RH during each afternoon. The wind will decrease slightly each day, and should be very light on Monday as a large high pressure works down from Canada and becomes centered over the eastern U.S.

The latest fuel moisture assessment from PA BOF partners indicated no critical fuel moisture conditions are expected over the weekend. This thankfully offsets critical fire wx risk due to low RH+gusty winds and therefore we do not anticipate issuing headlines at this time.

CLIMATE. Daylight saving time begins on Sunday, March 14th.

The first day of astronomical spring (vernal equinox 2021) will be at 5:37 A.M. EDT on Saturday, March 20th.

CTP WATCHES/WARNINGS/ADVISORIES. None.

SYNOPSIS . Dangelo/Steinbugl NEAR TERM . Dangelo SHORT TERM . Dangelo LONG TERM . Jurewicz/Lambert/Wagner AVIATION . Dangelo FIRE WEATHER . CLIMATE .

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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	34 mi	50 min	NW 12 G 25	37°F	40°F		1015.1 hPa (-2.2)
DELD1 - 8551762 - Delaware City, DE	42 mi	50 min	NW 14 G 25	37°F			1014.5 hPa (-2.1)
RDYD1 - 8551910 - Reedy Point, DE	43 mi	50 min		36°F	39°F		1014 hPa (-2.4)
BLTM2 - 8574680 - Baltimore, MD	45 mi	50 min	NNW 9.9 G 19	38°F	41°F		1016 hPa (-2.4)
MRCP1 - 8540433 - Marcus Hook, PA	46 mi	50 min		37°F	41°F		1013.8 hPa (-2.1)
TCBM2 - 8573364 - Tolchester Beach, MD	46 mi	50 min	WNW 18 G 25	37°F	41°F		1016.2 hPa (-2.5)
FSKM2 - 8574728 - Francis Scott Key Bridge, MD	48 mi	50 min	WNW 24 G 29	37°F			1015.8 hPa (-2.9)
FSNM2	48 mi	56 min	WNW 23 G 28	36°F			1015.4 hPa

Wind History for Chesapeake City, MD

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8 PM

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10 PM

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12 AM

1 AM

2 AM

3 AM

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Last 24hr

NW14 G20

NW11 G17

NW11 G14

NW17 G24

N10 G15

N9 G14

NW6 G11

NW11 G17

NW10 G17

NW13 G16

NW9 G13

NW10 G15

NW13 G18

NW11 G18

NW12 G18

NW13 G17

NW12 G17

NW13 G19

NW16 G22

NW13 G18

NW17 G21

NW17 G23

NW16 G22

NW12 G25

1 day ago

SW6

NW6 G9

SW6 G9

W3

W1

NW2

NW2

S2

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S1

N4

N4 G8

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S1

SE2

NW5 G10

NW11 G15

NW10 G17

N11 G16

NW12 G15

NW10 G16

NW13 G21

2 days ago

NW8 G12

NW7 G11

NW4 G7

W3

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SW4

SW2

SW2

SW2

SW1

S1

SW1

SW2

S1

S2

SW4

SW6 G9

SW10 G13

NW6 G10

W7 G10

SW3 G7

SW5

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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	17 mi	57 min	W 22 G 27	10.00 mi	Fair and Breezy	39°F	6°F	25%	1014.7 hPa
Chester County Airport, PA	23 mi	55 min	NW 15 G 25	10.00 mi	Fair	36°F	5°F	27%	1014.2 hPa

Link to 5 minute data for KLNS

Wind History from LNS (wind in knots)

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Last 24hr

N14

NW11 G21

N9 G19

N16

N10

N18

NW13

NW16 G25

W12

NW8

NW8

NW12

NW11 G18

NW13 G23

NW9

NW12 G19

NW13 G19

NW14

W17 G23

NW14 G24

NW17 G24

W18 G24

NW19 G27

W22 G27

1 day ago

W12

W10

SW8

SW6

Calm

W3

SW4

NW3

W3

NE9

SW4

SE3

NW4

Calm

NW5

NW5

NW5

W10

W11

NW16

N15

NW11

NW15 G20

W15

2 days ago

W11 G18

W11

W10

W4

SW3

SW3

Calm

Calm

Calm

Calm

Calm

Calm

S3

Calm

Calm

Calm

W4

Calm

W7

W6

W13 G16

W10

W7

W11 G18

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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 (2)

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Weather Map

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GEOS Local Image of    EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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