Thursday, July20, 2017 L-36.com


Marine Weather and Tides
Philadelphia, PA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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 5:47AMSunset 8:25PM Thursday July 20, 2017 10:33 PM EDT (02:33 UTC) Moonrise 2:01AMMoonset 4:43PM Illumination 7% Phase: Waning Crescent; Moon at 27 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
    EDIT      (on/off)   Help
ANZ430 Delaware Bay Waters North Of East Point Nj To Slaughter Beach De- 925 Pm Edt Thu Jul 20 2017
Rest of tonight..SW winds 5 to 10 kt. Waves 2 ft or less. A chance of showers and tstms late this evening, then a slight chance of showers and tstms.
Fri..NW winds 5 to 10 kt. Waves 2 ft or less.
Fri night..W winds around 5 kt in the evening, becoming variable less than 5 kt. Waves 2 ft or less.
Sat..NE winds around 5 kt, becoming S in the afternoon. Waves 2 ft or less. A chance of showers and tstms in the afternoon.
Sat night..S winds around 5 kt, becoming W after midnight. Waves 2 ft or less. A chance of showers and tstms.
Sun..SW winds around 5 kt. Waves 2 ft or less. A chance of showers and tstms.
Sun night..SW winds around 5 kt. Waves 2 ft or less. A chance of showers and tstms.
Mon..NW winds around 5 kt, becoming se around 5 kt in the afternoon. Waves 2 ft or less. A chance of showers and tstms.
Mon night..SE winds around 5 kt, becoming ne around 5 kt after midnight. Waves 2 ft or less. A chance of tstms in the evening. A chance of showers.
Tue..N winds around 5 kt. Waves 2 ft or less. A chance of showers in the morning.
Tue night..N winds 5 to 10 kt. Waves 2 ft or less. Winds and waves higher in and near tstms.
ANZ400 925 Pm Edt Thu Jul 20 2017
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. A cold front will approach the area tonight and cross through by Friday morning. Weak high pressure will then prevail through Saturday. Another front and associated low pressure will be across the area Saturday night through Monday.

7 Day Forecast for Marine Location Near Philadelphia, PA
   Hourly   EDIT   Help
location: 39.99, -75.1     debug


Area Discussion for - Philadelphia/Mount Holly, PA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kphi 210152
afdphi
area forecast discussion
national weather service mount holly nj
952 pm edt Thu jul 20 2017

Synopsis
A cold front will approach the area tonight and cross through by
Friday morning. Weak high pressure will then prevail through
Saturday. Another front and associated low pressure will be across
the area Saturday night through Monday. High pressure will then move
in next Tuesday and remain into the middle of next week.

Near term until 6 am Friday morning
The sky over our region should become clear to partly cloudy. A
surface trough trailing the convective complex is expected to
pass through our forecast area late tonight.

The wind is anticipated to become light and variable overnight. Low
temperatures should be mostly in the 70s.

Short term 6 am Friday morning through 6 pm Friday
Maximum temperatures on Friday will be similar to those of today.

However, the humidity is forecast to be slightly lower. We will
leave the excessive heat warning in place for the urban corridor.

However, other areas should fall a bit short of their criteria for a
heat advisory.

The sky is expected to be mostly sunny on Friday. We will not
mention any precipitation due to the lack of any significant
triggering mechanism along with the continued existence of a capping
inversion aloft.

The wind should favor the west and southwest on Friday around 5 to
10 mph.

Long term Friday night through Thursday
The heat wave will continue on into the weekend, but it will gradually
weaken with temperatures more in line with normal after Monday. A
few recent model runs are showing than high temperatures around 90
degrees readings are possible Monday, something which has
changed since yesterday, but for now we will continue with upper
80s across the philadelphia metro area and for DELMARVA too.

Dew point temperatures will be lower over the area Saturday, but
then climb back to steamy values Sunday and early Monday. A
front will cross the area Monday and drier and cooler air will
arrive behind that for the middle of next week.

Shower and TSTM chances will be rather low Friday night and into
Saturday morning, but then increase from W to E through the afternoon
as the the front and humid air return to the area. High chance
to low likely pops will be over the area Sunday into Monday as
the system passes the region. Lower pops will be over the area
Tuesday and Wednesday with high pressure settling over the
region.

Aviation 02z Friday through Tuesday
The following discussion is for kphl, kpne, kttn, kabe, krdg, kilg,
kmiv, kacy and surrounding areas.

Vfr conditions are expected through much of the TAF period.

Also, patchy visibility restrictions are possible during the late
night and early morning hours especially in areas where rain falls
this evening.

We are not anticipating any showers or thunderstorms on Friday.

A light southwest wind this evening is expected to become light and
variable tonight. A light northwest wind is anticipated for Friday
morning, then it should become west and southwest as the day
progresses.

Outlook...

fri night thru Saturday morning...VFR expected.

Saturday afternoon thru Monday... MostlyVFR. Sct showers and
tstms with lower conditions possible. Tue... MostlyVFR.

Marine
High pressure over the atlantic will continue to influence the
coastal waters of delaware and new jersey for tonight. A weak
frontal boundary from the northwest is forecast to arrive early on
Friday. The wind should favor the south and southwest at less than
15 knots tonight, becoming west to southwest on Friday. Wave heights
on our ocean waters will remain around 2 to 4 feet and waves on
delaware bay should be 1 to 2 feet.

Outlook...

sub-sca conditions overall. The main hazard will be sct tstms
mainly between Saturday afternoon and Monday. Locally higher
winds and seas with tstms. Bring your NOAA weather radio along
to get alerts.

Rip currents...

the underlying 10 second southeasterly swell is forecast to
persist into Friday. However, this is expected to be weaker than
yesterday so conditions may be more in the low category.

Equipment
The kdov dew point readings are unrepresentative of the area
and should not be used when diagnosing humidity heat indices and
meteorological analysis of meteorological items which use
dewpoint in a calculation.

Phi watches warnings advisories
Pa... Excessive heat warning until 8 pm edt Friday for paz070-071-
102-104-106.

Nj... Excessive heat warning until 8 pm edt Friday for njz015-
017>019.

De... Excessive heat warning until 8 pm edt Friday for dez001.

Md... None.

Marine... None.

Synopsis... O'hara
near term... Gaines iovino
short term... Iovino
long term... O'hara
aviation... Gaines iovino o'hara
marine... Gaines iovino o'hara
equipment...



Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BDSP1 1 mi51 min 82°F 1013.4 hPa
PHBP1 - 8545240 - Philadelphia, PA 5 mi51 min 85°F 82°F1012.5 hPa
BDRN4 - 8539094 - Burlington, Delaware River, NJ 14 mi57 min 76°F 82°F1013 hPa
NBLP1 - 8548989 - Newbold, PA 21 mi51 min E 1.9 G 7 76°F 83°F1013.6 hPa
MRCP1 - 8540433 - Marcus Hook, PA 21 mi51 min 84°F 1012.2 hPa
DELD1 - 8551762 - Delaware City, DE 38 mi51 min WSW 1.9 G 4.1 85°F 82°F1012.8 hPa
RDYD1 - 8551910 - Reedy Point, DE 39 mi51 min 84°F 85°F1012.4 hPa
JCRN4 - Jacques Cousteau Reserve, NJ 46 mi63 min S 2.9 81°F 1013 hPa77°F
CHCM2 - 8573927 - Chesapeake City, MD 49 mi51 min Calm G 1 82°F 88°F1013.1 hPa

Wind History for Philadelphia, PA
(wind in knots)    EDIT      (on/off)   Help
Last
24hr
1 day
ago
2 days
ago

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Philadelphia, Northeast Philadelphia Airport, PA8 mi39 minE 510.00 miFair78°F71°F79%1013.3 hPa
Philadelphia, Philadelphia International Airport, PA11 mi39 minN 1110.00 miMostly Cloudy86°F66°F51%1012.9 hPa
Philadelphia - Wings Field Airport, PA13 mi58 minENE 310.00 miFair77°F66°F69%1014.2 hPa
Mount Holly, South Jersey Regional Airport, NJ14 mi39 minNE 310.00 miA Few Clouds79°F69°F72%1012.8 hPa
Doylestown, Doylestown Airport, PA24 mi39 minN 010.00 miFair73°F70°F90%1012.6 hPa

Wind History from PNE (wind in knots)
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
Last 24hrS3SW3SW4SW3W4SW3CalmCalmCalmNW3W3W4W6W8NW11
G16
W11W10W14
G19
W8
G17
--W9W9N13E5
1 day agoS4SW3CalmS3CalmCalmCalmCalmSW5W7W6N5NW4NW73W6NW9W9NW5W9NW6W5SW5SW5
2 days ago45CalmSE3CalmCalmCalm--CalmCalm4CalmE5S4E45W4S4W7S7SW8S7SW8SW8

Tide / Current Tables for Bridesburg, Philadelphia, Pennsylvania
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Bridesburg
Click for Map
Thu -- 03:01 AM EDT     Moonrise
Thu -- 05:48 AM EDT     Sunrise
Thu -- 06:47 AM EDT     0.38 feet Low Tide
Thu -- 11:53 AM EDT     6.43 feet High Tide
Thu -- 05:42 PM EDT     Moonset
Thu -- 06:57 PM EDT     0.20 feet Low Tide
Thu -- 08:24 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.36.353.92.91.90.80.41.63.5566.45.84.53.32.31.50.70.21.13.35.46.8

Tide / Current Tables for Philadelphia, Pennsylvania Current
   EDIT      (on/off)   Help   One Week of Data
Philadelphia
Click for Map
Thu -- 03:01 AM EDT     Moonrise
Thu -- 03:07 AM EDT     -2.25 knots Max Ebb
Thu -- 05:48 AM EDT     Sunrise
Thu -- 07:02 AM EDT     0.01 knots Slack
Thu -- 09:05 AM EDT     1.95 knots Max Flood
Thu -- 12:12 PM EDT     -0.01 knots Slack
Thu -- 03:13 PM EDT     -2.30 knots Max Ebb
Thu -- 05:42 PM EDT     Moonset
Thu -- 07:08 PM EDT     0.00 knots Slack
Thu -- 08:24 PM EDT     Sunset
Thu -- 09:13 PM EDT     2.28 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.4-1.5-2.1-2.2-2.2-2-1.5-0.11.51.91.91.50.3-1.1-2-2.3-2.2-1.8-1.3-0.21.42.32.11.8

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Mid-Atlantic    EDIT
Geos

Wind Forecast for Philadelphia/Mount Holly, PA (22,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Philadelphia, PA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Disclaimer:
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 numerious 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.