Sunday, June25, 2017

Marine Weather and Tides
West Reading, PA

Version 3.4
What's New / NOTES
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 5:33AMSunset 8:39PM Sunday June 25, 2017 4:47 AM EDT (08:47 UTC) Moonrise 6:21AMMoonset 9:05PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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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ANZ530 Chesapeake Bay North Of Pooles Island- 432 Am Edt Sun Jun 25 2017
.small craft advisory in effect from 1 pm edt this afternoon through this evening...
Rest of the overnight..NW winds 5 kt. Waves less than 1 ft.
Today..W winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
Tonight..W winds 5 to 10 kt. Gusts up to 20 kt until early morning. Waves 1 ft.
Mon..W winds 5 to 10 kt. Waves 1 ft.
Mon night..W winds 5 to 10 kt. Waves 1 ft or less.
Tue..W winds 5 to 10 kt. Waves 1 ft or less.
Tue night..NW winds 5 kt. Waves less than 1 ft.
Wed..SW winds 5 kt. Waves less than 1 ft.
Thu..SW winds 10 to 15 kt. Waves 1 to 2 ft.
ANZ500 432 Am Edt Sun Jun 25 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build from the west through Tuesday night as a series of weak cold fronts cross the chesapeake bay region. The high pressure center will then move over the area Wednesday before shifting into the atlantic Thursday. Small craft advisory conditions are possible over portions of the waters Monday and Tuesday.

7 Day Forecast for Marine Location Near West Reading , PA
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location: 40.34, -75.95     debug

Area Discussion for - Philadelphia/Mount Holly, PA
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Fxus61 kphi 250720
area forecast discussion
national weather service mount holly nj
320 am edt Sun jun 25 2017

Surface high pressure over the midwest gradually builds east as
an upper trough encompasses the great lakes and northeast. High
pressure moves offshore Monday night, and then a cold front and
upper trough passes through the region Tuesday and Tuesday
night. High pressure returns on Wednesday, and then a series of
frontal boundaries will pass through the region through the end
of the week.

Near term until 6 pm this evening
High pressure will be ridging across the area today while low
pressure remains to the north. A dry day with mostly sunny skies
is expected by-in-large. There could be a few isolated showers
across the southern poconos this afternoon. We have reduced the
pops slightly from the earlier fcst. Temperatures will be
seasonable for late june with low 80s across the north and mid
80s over DELMARVA and metro philadelphia. Winds will be west to
northwest around 10 mph.

Short term 6 pm this evening through 6 am Monday
Fair weather will continue tonight with mostly clear skies and
light winds. Low temperatures will drop into the low mid 50s
across the north and upper 50s to low 60s elsewhere. Winds will
be light and variable.

Long term Monday through Saturday
The first half of the new week will feature surface high
pressure building into the southeast u.S. As an upper trough
digs into the great lakes and northeast. Several shortwaves will
pass through the base of the trough Monday and Monday evening,
and this may touch off some isolated showers and thunderstorms,
mainly north and west of the fall line. Monday will end up being
dry for most of the region due to the influence of the surface
high south and west of the region, and temperatures will be
several degrees below normal, topping off in the mid to upper
70s. Humidity levels will be quite comfortable, as surface
dewpoints will be in the 40s and low 50s.

On Tuesday, a stronger shortwave will dig through the oh tn
valleys and into the appalachians and will push a cold front
into the region through the region during the afternoon and
evening. Weak surface low pressure develops off the mid-atlantic
coast, but this low looks to be too far south and east to have
much of an impact for the mid- atlantic and northeast coasts.

However, the 00z ECMWF is showing a closer track to the coast
than the nam GFS cmc-gdps, so this does bear watching. For now,
will keep pops capped at slight chance- chance with the passage
of the cold front. Another relatively cool day on tap with highs
once again in the 70s.

High pressure builds into the mid-atlantic on Wednesday, and
then moves offshore Wednesday night. Dry with plenty of
sunshine, and temperatures tick up a few degrees as compared to
Tuesday with comfortable humidity levels.

From there, an upper trough digs into the northern plains and
gradually works its way east into the end of the week. Several
strong shortwaves will dive into the base of the trough, and
surface low pressure develops out ahead of the trough. Each low
will pass north of the region from Thursday through Saturday,
but each low will drag a weak frontal boundary through the
region. This will touch off scattered showers and thunderstorms
during this time, but the forecast may end up reading worse than
it may actually end up being.

With surface high pressure now offshore for the end of the
week, SW flow will tap into gulf moisture and brings a return to
the heat and humidity across the region. Highs climb back up
through the 80s to around 90 with dewpoints building through the
60s and into the low 70s by the weekend.

Aviation 07z Sunday through Thursday
The following discussion is for kphl, kpne, kttn, kabe, krdg,
kilg, kmiv, kacy and surrounding areas.

Good flying weather across the region today and tonight. Low
pressure remains to the north while a ridge of high pressure
builds over our area. Winds will generally be from the west or
southwest much of the day. Winds speeds will mostly be around 10
knots after mid-morning. A few gusts closer to 20 knots are
possible. Tonight, mostly clear skies expected and winds under 5


Monday and Monday night... MostlyVFR, but isolated shra tsra
possible at krdg kabe. SW winds 10-15 kt with gusts to 20 kt
during the day and less than 10 kt at night.

Tuesday... MostlyVFR, but isolated shra tsra possible, mainly
in the afternoon evening. SW winds 10-15 kt with gusts to 20 kt
during the day and less than 10 kt at night.

Wednesday...VFR conditions expected.

Thursday... MostlyVFR. Isolated shra tsra possible.

Good weather expected on the waters today and tonight. The
remaining SCA flag that was up for the northern nj coastal
waters will be taken down with the 330 issuance. Seas will
mostly remain around 3 ft on the ocean today and 1-2 ft across
delaware bay. Winds will be northwest this morning and then west
or southwest tonight.


Monday through Wednesday... Winds and seas should stay below sca
criteria. Isolated shra tsra possible Monday through Tuesday.

Dry on Wednesday.

Thursday... SCA conditions may develop in the afternoon.

Rip currents
We will forecast a low risk for rip currents for today and tonight.

Tides coastal flooding
Tide levels may approach but not quite exceed minor coastal
flooding thresholds with the evening high tide tonight. Will not
issue a coastal flood advisory at this time. A similar
situation may develop again with Monday evening high tide.

Phi watches warnings advisories
Pa... None.

Nj... None.

De... None.

Md... None.

Marine... None.

Synopsis... Mps
near term... O'hara
short term... O'hara
long term... Mps
aviation... Mps o'hara
marine... Mps o'hara
tides coastal flooding...

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MRCP1 - 8540433 - Marcus Hook, PA 46 mi47 min 72°F 1013.4 hPa (+0.0)
PHBP1 - 8545240 - Philadelphia, PA 51 mi47 min 75°F 77°F1013.3 hPa (+0.3)

Wind History for Philadelphia, PA
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Reading, Reading Regional Airport, PA3 mi53 minN 01.50 miFog/Mist64°F64°F100%1014.4 hPa
Pottstown, Pottstown Limerick Airport, PA22 mi53 minN 010.00 miFair63°F61°F93%1014.4 hPa
Lancaster, Lancaster Airport, PA24 mi54 minW 410.00 miFair67°F63°F87%1014.2 hPa

Wind History from RDG (wind in knots)
Last 24hrNW4W4W8W7W11W14
1 day agoCalmCalmCalmCalmS8SW6S7SW12
2 days agoCalmCalmCalmN3CalmCalmSE4SW465SW8W54SW7SW4SW5SW7W6W5NW6CalmSW3CalmCalm

Tide / Current Tables for Marcus Hook, Pennsylvania
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Marcus Hook
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Sun -- 01:27 AM EDT     7.45 feet High Tide
Sun -- 05:34 AM EDT     Sunrise
Sun -- 07:20 AM EDT     Moonrise
Sun -- 08:56 AM EDT     -0.04 feet Low Tide
Sun -- 02:01 PM EDT     6.31 feet High Tide
Sun -- 08:33 PM EDT     Sunset
Sun -- 09:02 PM EDT     0.29 feet Low Tide
Sun -- 10:01 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Edgemoor, Delaware River, Delaware
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Click for Map
Sun -- 01:16 AM EDT     6.79 feet High Tide
Sun -- 05:35 AM EDT     Sunrise
Sun -- 07:21 AM EDT     Moonrise
Sun -- 08:49 AM EDT     -0.28 feet Low Tide
Sun -- 01:51 PM EDT     5.69 feet High Tide
Sun -- 08:34 PM EDT     Sunset
Sun -- 08:50 PM EDT     0.03 feet Low Tide
Sun -- 10:01 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
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Weather Map
IR Satellite Image from GEOS

GOES Local Image of Mid-Atlantic    EDIT

Wind Forecast for Philadelphia/Mount Holly, PA (4,6,7,8)
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Ground Weather Radar Station Philadelphia, PA
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weather_mapweather_map weather_map

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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 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 numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at 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.