Friday, April3, 2020
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Marine Weather and Tides
Trexler, 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.

Sunrise 6:39AMSunset 7:30PM Friday April 3, 2020 8:04 PM EDT (00:04 UTC) Moonrise 1:10PMMoonset 3:15AM Illumination 83% Phase: Waxing Gibbous; Moon at 11 days in cycle
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.
Marine Forecasts
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ANZ338 NEw York Harbor- 552 Pm Edt Fri Apr 3 2020
.small craft advisory in effect until 8 pm edt this evening...
Tonight..N winds 15 to 20 kt, diminishing to 10 to 15 kt late this evening and overnight. Gusts up to 25 kt early. Waves 2 to 3 ft. Light rain likely early this evening, then chance of light rain late this evening and early morning. Slight chance of light rain late.
Sat..N winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt in the afternoon. Waves 2 to 3 ft.
Sat night..S winds 5 to 10 kt. Waves 2 to 3 ft.
Sun..S winds 5 to 10 kt. Waves 2 to 3 ft.
Sun night..SW winds 5 to 10 kt, becoming nw after midnight. Waves 2 to 3 ft.
Mon..NW winds 5 to 10 kt, becoming W in the afternoon. Waves 2 to 3 ft.
Mon night..SW winds 5 to 10 kt. Waves 1 ft or less.
Tue..SW winds around 5 kt, becoming S in the afternoon. Waves 1 ft or less.
Tue night..SE winds around 5 kt. Waves 1 ft or less.
Wed..E winds 5 to 10 kt, becoming S in the afternoon. Waves 1 ft or less. Chance of rain.
Wed night..NW winds 5 to 10 kt. Waves 1 ft or less. Chance of rain.
ANZ300 552 Pm Edt Fri Apr 3 2020
Synopsis for the long island waters and new york harbor.. A low offshore continues to move farther away to the southeast into the atlantic ocean through early Saturday. Thereafter, weak high pressure will build in from the north and west for the rest of Saturday through early Sunday. A weak cold front approaches on Sunday and eventually crosses the waters Sunday night. High pressure then briefly returns on Monday, followed by an approaching frontal system for the middle of next week.


7 Day Forecast for Marine Location Near Trexler, PA
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location: 40.6, -75.64     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 031952 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 352 PM EDT Fri Apr 3 2020

SYNOPSIS. Low pressure will continue to retrograde closer to the coast through early Saturday before pushing offshore. Meanwhile, high pressure will build from the Ohio Valley into the Mid-Atlantic Sunday behind this system before a weak cold front pushes across the region Sunday night. High pressure builds back across the region to start the work week before a series of weak low pressure centers crosses the eastern U.S. through midweek, with the possibility for a stronger storm system by late week.

NEAR TERM /UNTIL 6 AM SATURDAY MORNING/. Lingering showers could continue pivot through coastal areas this evening as a trough digs south on the backside of the low. The main off shore low will drift southeast, further away from the region, beginning very late tonight. As a result, expect winds to shift northeasterly after midnight. Thus, despite the low drifting further away, we expect the low clouds to continue through the overnight hours.

The onshore flow and overcast conditions should keep temperatures from dropping significantly overnight. Thus, lows are expected to be mostly in the 40s across the area.

SHORT TERM /6 AM SATURDAY MORNING THROUGH 6 PM SATURDAY/. Mid level shortwave ridge will slowly build east. However, we will keep light onshore flow, which will help to keep some of the low level clouds in place. However, with the ridge building closer, we will see the warming trend start, with temperatures near normal (highs in the mid 50s to near 60).

LONG TERM /SATURDAY NIGHT THROUGH FRIDAY/. Weak high pressure overhead will result in much quieter weather Sunday after the battle that has been this coastal monster. To this system, we can all say, thank you, next. This will be short- lived, however, as a weak area of low pressure tracks across Ontario and into Quebec. A weak cold front will accompany this low Sunday night, but limited moisture and forcing will result in only the chance for an isolated shower or sprinkle. The GFS and EC have slightly increased PoPs, but this system still looks rather benign. Given the decay of this front, temperatures don't really even drop behind this front as a stronger ridge quickly builds to our southwest, ushering in WAA. As a result temperatures may even warm a touch from the low 60s Sunday to the upper 60s Monday afternoon.

Low pressure continues to drift out to sea over the weekend, and high pressure will be over the area on Sunday, and departs late in the day. WAA begins, and temperatures warm back up into the upper 50s and lower 60s. Another warm front lifts north through the region Sunday night, and high pressure redevelops west of the area for the start of the new week. It will turn much warmer on Monday with highs in the mid to upper 60s throughout.

Northwest flow will overtake the region Tuesday as the ridge builds across the Gulf of Mexico and Southeast. Several shortwave perturbation/vort maxes look to pass across the Tennessee Valley into Carolinas Tuesday through Thursday with a lack of any large- scale features. The first of these skirts to our south Tuesday, introducing a few showers across Delmarva and maybe as far north as South Jersey. Highs Tuesday will range from the mid 60s to near 70 across Delmarva. A stronger impulse will pass across the region Wednesday ahead of what looks to be a much stronger shortwave Thursday. This shortwave will dive southeast across Saskatchewan into the Great Lakes Wednesday into Thursday. Long range guidance is still a little uncertain on how the surface low formation will transpire, but this does look to be the more active of features next week as the system pulls a cold front eastward across the region. Highs look to sit in the low to mid 60s through Thursday, cooling Friday as the cold front passes through into the 50s.

AVIATION /20Z FRIDAY THROUGH WEDNESDAY/. The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Tonight..Ceilings are expected to be on the cusp of MVFR and VFR conditions, ranging between 2000 and 5000 ft AGL, through the overnight hours. As a result, there is low confidence in the timing of changes between MVFR and VFR. North northwesterly winds will diminish quickly after sunset to 5 to 15 kt. Winds are expected to gradually shift to north northeasterly after midnight. Low confidence on the timing between MVFR and VFR changes, but otherwise moderate confidence on the rest of the pattern.

Saturday . ceilings should rise to VFR conditions early, and remain VFR through the day, generally between 3000 and 6000 ft AGL. Northeasterly winds 5 to 15 kt could become light and variable, especially at KRDG and KABE during the afternoon. Moderate confidence.

Outlook .

Sunday . VFR with southwesterly winds from 5 to 10 knots. A chance for MVFR CIGs as scattered showers move into the region Sunday evening. Moderate confidence.

Monday . VFR with westerly winds from 5 to 10 knots. Moderate confidence.

Tuesday . Mainly VFR expected with southwest winds from 5 to 10 knots. A chance for a few showers in the morning may bring sub-VFR CIG restrictions. Moderate confidence.

Wednesday . Sub-VFR conditions possible as rain showers move across the region. Light and variable winds from 5 knots or less. Low confidence.

MARINE. On the Delaware Bay . Winds should subside below 25 kt by late this evening. Winds should then stay below Small Craft Advisory criteria through the remainder of tonight and Saturday.

On the Atlantic Coastal Waters . winds have subsided below gales, and are not expected to increase again. By Saturday afternoon, winds may even subside below 25 kt. However, elevated seas are expected to linger through at least Saturday.

Outlook. Sunday . SCA level seas from 4 to 6 feet with southeasterly winds from 10 to 15 knots.

Monday . Seas may remain above 5 feet through the morning with southwesterly winds turning southeasterly from 5 to 10 knots.

Tuesday through Wednesday . Sub-SCA conditions expected with southwesterly winds turning easterly Wednesday from 10 to 15 knots. A few gusts to 20 knots are possible Tuesday and Wednesday. Seas below 5 feet.

TIDES/COASTAL FLOODING. A strong ocean storm is acting in concert with the approaching full moon and resultant increasing astronomical tides to promote the potential for several rounds of coastal flooding on the Atlantic coast, Delaware Bay, and adjacent tidal tributaries beginning with tonight's high tide. The threat appears greatest with this first high tide, with potential for widespread moderate flooding in tidal sections of southern New Jersey and central/southern Delaware. The coastal flood watch for these areas has been upgraded to a coastal flood warning (in effect from 2 am to 10 am Saturday). Widespread advisory-level flooding is expected in coastal sections of northern/central New Jersey, upper Delaware Bay, and tidal sections of the Delaware River, where coastal flood advisories have been posted. Localized moderate flooding is possible on the Atlantic coast and along the southern shores of Raritan Bay in northern/central New Jersey, and if model trends continue upward, an upgrade to a coastal flood warning may be required later this evening.

Subsequent high tides may also feature minor coastal flooding, and advisories later this weekend will likely be required once confidence has sufficiently increased. In addition, water levels will be increasing slowly on the eastern shores of Chesapeake Bay and may approach minor flooding levels later in the weekend

PHI WATCHES/WARNINGS/ADVISORIES. PA . Coastal Flood Advisory from 9 AM to 2 PM EDT Saturday for PAZ070-071-106. NJ . Coastal Flood Advisory from 3 AM to 9 AM EDT Saturday for NJZ012>014-020-021-026-027. Coastal Flood Warning from 2 AM to 10 AM EDT Saturday for NJZ022>025. Coastal Flood Advisory from 6 AM to 10 AM EDT Saturday for NJZ016. Coastal Flood Advisory from 9 AM to 2 PM EDT Saturday for NJZ015-017>019. DE . Coastal Flood Warning from 2 AM to 10 AM EDT Saturday for DEZ002>004. Coastal Flood Advisory from 6 AM to 10 AM EDT Saturday for DEZ001. MD . None. MARINE . Small Craft Advisory until 6 AM EDT Sunday for ANZ450>455. Small Craft Advisory until 8 PM EDT this evening for ANZ430- 431.

Synopsis . Davis Near Term . Johnson Short Term . Johnson Long Term . Davis Aviation . Davis/Johnson Marine . Davis/Johnson Tides/Coastal Flooding .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PHBP1 - 8545240 - Philadelphia, PA 53 mi65 min 54°F 50°F1009.1 hPa (+2.7)
BDRN4 - 8539094 - Burlington, Delaware River, NJ 54 mi89 min N 7 G 12 54°F 49°F1008.5 hPa

Wind History for Philadelphia, PA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Allentown Queen City Municipal Airport, PA8 mi70 minNNW 13 G 1610.00 miLight Rain50°F39°F67%1011.2 hPa
Allentown, Lehigh Valley International Airport, PA12 mi74 minNNW 14 G 1910.00 miOvercast52°F37°F57%1010.6 hPa
Quakertown Airport, PA18 mi70 minNW 1010.00 miOvercast50°F39°F67%1010.5 hPa
Reading, Reading Regional Airport, PA23 mi71 minNNW 1010.00 miLight Rain50°F39°F66%1011.5 hPa

Link to 5 minute data for KXLL

Wind History from XLL (wind in knots)
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2 days agoE4CalmNE3E3NE3NE4E7NE3NE4NE5NE7NE6NE8N8NE8NE8N5CalmN5NW8N9N14
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Tide / Current Tables for Market Street Bridge, Schuylkill River, Pennsylvania
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Market Street Bridge
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Fri -- 04:11 AM EDT     Moonset
Fri -- 04:44 AM EDT     0.60 feet Low Tide
Fri -- 06:40 AM EDT     Sunrise
Fri -- 09:57 AM EDT     6.08 feet High Tide
Fri -- 02:09 PM EDT     Moonrise
Fri -- 05:35 PM EDT     0.64 feet Low Tide
Fri -- 07:27 PM EDT     Sunset
Fri -- 10:37 PM EDT     5.56 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.62.71.91.20.80.61.63.55.15.86.15.74.83.82.92.21.50.80.823.74.85.45.5

Tide / Current Tables for Bridesburg, Philadelphia, Pennsylvania
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Bridesburg
Click for Map
Fri -- 04:10 AM EDT     Moonset
Fri -- 05:06 AM EDT     0.65 feet Low Tide
Fri -- 06:40 AM EDT     Sunrise
Fri -- 10:34 AM EDT     6.51 feet High Tide
Fri -- 02:09 PM EDT     Moonrise
Fri -- 05:57 PM EDT     0.68 feet Low Tide
Fri -- 07:27 PM EDT     Sunset
Fri -- 11:14 PM EDT     5.96 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.43.42.41.610.71.12.84.75.96.46.45.74.63.62.71.91.10.71.43.24.65.55.9

Weather Map
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wmap_A
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.
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Wind Forecast for Philadelphia/Mount Holly, PA (20,4,5,8)
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Ground Weather Radar Station Philadelphia, PA
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.