Marine Weather and Tides
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 7:14AM||Sunset 5:12PM||Friday January 19, 2018 12:04 PM EST (17:04 UTC)||Moonrise 8:49AM||Moonset 7:44PM||Illumination 9%|
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|ANZ455 Coastal Waters From Cape May Nj To Cape Henlopen De Out 20 Nm- Coastal Waters From Cape Henlopen To Fenwick Island De Out 20 Nm- 941 Am Est Fri Jan 19 2018 |
Rest of today..NW winds around 10 kt with gusts up to 20 kt, becoming sw this afternoon. Seas 2 ft or less. SWell mainly from the E with a dominant period of 10 seconds.
Tonight..SW winds 5 to 10 kt with gusts up to 20 kt, increasing to 10 to 15 kt with gusts up to 20 kt late. Seas 2 ft or less, then around 3 ft late. SWell mainly from the se with a dominant period of 10 seconds.
Sat..SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. SWell mainly from the S with a dominant period of 6 seconds.
Sat night..W winds around 10 kt with gusts up to 20 kt. Seas around 3 ft in the evening, then 2 ft or less. SWell mainly from the S with a dominant period of 6 seconds.
Sun..W winds 5 to 10 kt. Seas 2 ft or less.
Sun night..SW winds 5 to 10 kt. Seas 2 ft or less.
Mon..S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 ft or less, then around 3 ft in the afternoon.
Mon night..S winds 15 to 20 kt. Seas 3 to 5 ft. A chance of rain in the evening, then rain likely after midnight.
Tue..SW winds 15 to 20 kt, becoming W in the afternoon. Seas 4 to 6 ft. Rain, mainly in the morning.
Tue night..W winds around 15 kt. Seas 3 to 4 ft.
|ANZ400 941 Am Est Fri Jan 19 2018 |
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure across the central gulf coast will build eastward today, then offshore over the weekend. An area of low pressure will move across eastern canada over the weekend as a back door cold front approaches from the north. Another area of low pressure will move through the great lakes Monday night into Tuesday, pulling a cold front across the area. High pressure will build toward the area late Wednesday into Thursday of next week.
7 Day Forecast for Marine Location Near Blades, DEHourly EDIT Help
Area Discussion for - Philadelphia/Mount Holly, PA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 kphi 191536|
area forecast discussion
national weather service mount holly nj
1036 am est Fri jan 19 2018
High pressure across the central gulf coast will build eastward
today, then offshore over the weekend. An area of low pressure
will move across eastern canada over the weekend as a back door
cold front approaches from the north. Another area of low
pressure will move through the great lakes Monday night into
Tuesday, pulling a cold front across the area. High pressure
will build toward the area late Wednesday into Thursday of next
Near term until 6 pm this evening
No major changes with the morning update. Surface high pressure
builds in from the west, allowing for rising heights and
thicknesses. Highs will be some 8-10 degrees warmer today than
Thursday, topping off in the mid to upper 30s north and west of
the fall line, and in the low to mid 40s across southern nj and
southeast pa, and in the mid to upper 40s in the delmarva.
Short term 6 pm this evening through 6 am Saturday
High pressure continues to build in from the west and heights
continue to rise. This results in overnight lows warmer tonight
than this morning, but there will still be some radiational
cooling that allows temperatures to drop into the teens and
lower 20s. Otherwise, lows will be generally in the mid 20s.
Long term Saturday through Thursday
Quiet weather continues into the weekend, with a return of
unsettled weather for early next week, followed by quiet weather
again for the middle of next week.
Dry conditions will continue for Saturday and Saturday night as
high pressure builds to our south across the southeastern
states then offshore Saturday. We will remain on the northern
periphery of the high which will keep a dry, west to southwest
flow across the area. Winds on Saturday are expected to gust
20-25 mph at times during the afternoon.
On Sunday, a back door cold front will sag toward our area from
the north as an area of low pressure slides eastward across
eastern canada, and cold high pressure builds across eastern
canada through Sunday night. Sunday is expected to remain dry,
but cloud cover will be on the increase through the day.
As we move into Sunday night and Monday, the back door frontal
boundary is forecast to make its way across a portion of the
area. As it does so, there will be some enhanced moisture and
lift moving overtop of the front. This may lead to some light
rain drizzle developing across the area Sunday night into
Monday. Temperatures are expected to drop below freezing for
portions of northern new jersey and northeastern pennsylvania as
some cold air gets dammed up. If any precipitation does occur,
this could lead to some light freezing rain or drizzle overnight
Sunday into Monday morning.
Then Monday night into Tuesday morning, a cold front is
expected to sweep across the area as an area of low pressure
moves through the great lakes region. This will lead to a period
of rainfall overnight Monday into Tuesday. It is possible that
the rain could change over to snow across northern new jersey
and northeastern pennsylvania before the precipitation ends
Tuesday morning behind the cold frontal passage.
For Tuesday night into Wednesday, the low pressure system moves
across eastern canada, while a secondary cold front moves
toward the area from the west, which may cross the area during
the day. Most of the area will remain dry, as any precipitation
is forecast to remain to our north. If there is any
precipitation, it would most likely occur across portions of
northern new jersey and northeastern pennsylvania.
High pressure returns for Thursday, leading to dry conditions.|
Aviation 16z Friday through Tuesday
The following discussion is for kphl, kpne, kttn, kabe, krdg,
kilg, kmiv, kacy and surrounding areas.
Today...VFR. Skc few250. W-sw winds less than 10 kt. High
Tonight...VFR. Skc few250. Light and variable winds. High
Saturday through Saturday night...VFR. West to southwest winds;
winds may gust 15-20 knots at time. High confidence.
Sunday... Conditions may lower to MVFR later during the day.
West winds may gust 15-20 knots. Moderate confidence.
Sunday night-Monday... MVFR conditions overnight Sunday into
Monday. May become ifr, especially northern areas, with a chance
of showers. Moderate confidence.
Monday night-Tuesday..Conditions lower to ifr everywhere with
periods of rain associated with a frontal passage. Southeast
winds become westerly behind the front and begin gusting 25-30
knots. Moderate confidence.
Sub-sca conditions today and tonight. Southwest winds on the
ocean will generally range from 10-15 kt with gusts up to 20 kt.
On delaware bay, SW winds will be 10 kt or less with 1-2 ft
seas today and tonight.
Saturday... Small craft advisory in effect for the northern half
of the new jersey coastal waters as winds expected to gust
25-30 knots. The southern new jersey and delaware coastal waters
are only expected to gust around 20-25 knots, so we have not
issued an advisory there.
Saturday night... Winds are expected to drop below advisory
levels by Saturday evening, but periodically gust around 20
Sunday-Monday... Conditions expected to remain below advisory
levels, but winds may periodically gust around 20 knots.
Monday night... Conditions expected to return to small craft
Tuesday... Small craft advisory level wind continue, but may
reach gale force.
Phi watches warnings advisories
Marine... Small craft advisory from 6 am to 6 pm est Saturday for
near term... Johnson mps
short term... Mps
long term... Robertson
aviation... Robertson mps
marine... Robertson mps
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|CA2 - 8571892 - Cambridge, MD||26 mi||65 min||35°F||32°F||1021.9 hPa (+0.4)|
|LWSD1 - 8557380 - Lewes, DE||27 mi||65 min||WNW 5.1 G 6||40°F||33°F||1020.6 hPa (+0.4)|
|DRSD1 - Delaware Reserve, DE||33 mi||155 min||WSW 1.9||34°F||1020 hPa||23°F|
|OCIM2 - 8570283 - Ocean City Inlet, MD||34 mi||65 min||NNW 2.9 G 2.9||39°F||35°F||1021.6 hPa (+0.6)|
|BRND1 - 8555889 - Brandywine Shoal Light, DE||35 mi||65 min||WSW 8 G 9.9||34°F||1021 hPa (+0.3)|
|BISM2 - 8571421 - Bishops Head, MD||37 mi||65 min||SW 4.1 G 4.1||34°F||32°F||1021.8 hPa (+0.8)|
|CMAN4 - 8536110 - Cape May, NJ||41 mi||65 min||W 5.1 G 6||34°F||32°F||1020.1 hPa (+0.0)|
|44062 - Gooses Reef, MD||44 mi||35 min||SSW 5.8 G 5.8||34°F||1021.1 hPa|
|COVM2 - 8577018 - Cove Point LNG Pier, MD||45 mi||65 min||SSE 2.9 G 2.9||33°F||1021.7 hPa (+0.0)|
|SJSN4 - 8537121 - Ship John Shoal, NJ||48 mi||65 min||W 9.9 G 12||38°F||31°F||1019.9 hPa (+0.0)|
|44009 - DELAWARE BAY 26 NM Southeast of Cape May, NJ||48 mi||75 min||WSW 7.8 G 9.7||37°F||40°F||2 ft||1021.7 hPa (+0.9)||28°F|
|TPLM2 - Thomas Point, MD||49 mi||65 min||SSW 5.1 G 5.1||37°F||32°F|
|CPVM2||49 mi||65 min||44°F||14°F|
Wind History for Cambridge, MD(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Georgetown - Delaware Coastal Airport, DE||13 mi||71 min||W 7||10.00 mi||Fair||43°F||17°F||35%||1021 hPa|
|Salisbury, Salisbury-Ocean City Wicomico County Regional Airport, MD||21 mi||71 min||NNW 3||10.00 mi||Fair||42°F||19°F||40%||1021.6 hPa|
|Cambridge-Dorchester Airport, MD||24 mi||90 min||N 0||10.00 mi||Fair||39°F||17°F||42%||1021.7 hPa|
Wind History from GED (wind in knots)
|1 day ago||NW||NW||N|
|2 days ago||NW||Calm||Calm||NW||NW||N||NW||N|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
Click for Map
Fri -- 12:34 AM EST -0.12 feet Low Tide
Fri -- 06:30 AM EST 2.07 feet High Tide
Fri -- 07:17 AM EST Sunrise
Fri -- 08:49 AM EST Moonrise
Fri -- 12:31 PM EST -0.14 feet Low Tide
Fri -- 05:10 PM EST Sunset
Fri -- 06:47 PM EST 2.49 feet High Tide
Fri -- 07:44 PM EST Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
Click for Map
Fri -- 01:48 AM EST 0.45 knots Max Flood
Fri -- 04:30 AM EST -0.00 knots Slack
Fri -- 07:16 AM EST Sunrise
Fri -- 07:37 AM EST -0.83 knots Max Ebb
Fri -- 08:48 AM EST Moonrise
Fri -- 10:56 AM EST 0.00 knots Slack
Fri -- 01:59 PM EST 0.65 knots Max Flood
Fri -- 05:09 PM EST -0.00 knots Slack
Fri -- 05:10 PM EST Sunset
Fri -- 07:44 PM EST Moonset
Fri -- 08:07 PM EST -0.84 knots Max Ebb
Fri -- 11:46 PM EST 0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of Mid-Atlantic EDIT
Wind Forecast for Philadelphia/Mount Holly, PA (12,3,4,5)(on/off)  Help
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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 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.