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 6:41AM||Sunset 5:49PM||Thursday February 22, 2018 9:24 PM EST (02:24 UTC)||Moonrise 10:41AM||Moonset 12:00AM||Illumination 53%|
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|ANZ431 Delaware Bay Waters South Of East Point Nj To Slaughter Beach De- 634 Pm Est Thu Feb 22 2018 |
.small craft advisory in effect until midnight est tonight...
Tonight..NE winds 10 to 15 kt. Gusts up to 25 kt this evening. Waves 2 to 3 ft. Rain early this evening, then a chance of rain late this evening and overnight.
Fri..NE winds 10 to 15 kt with gusts up to 20 kt, becoming se 5 to 10 kt in the afternoon. Waves around 3 ft early in the morning, then 2 ft or less. A chance of rain. Patchy fog late with vsby 1 to 3 nm.
Fri night..SW winds 5 to 10 kt. Waves 2 ft or less. Patchy fog early in the evening. Patchy fog after midnight. Patchy drizzle until early morning. Patchy drizzle late. Vsby 1 to 3 nm early in the evening, then 1 to 3 nm after midnight.
Sat..NW winds around 5 kt, becoming E in the afternoon. Waves 2 ft or less. Patchy drizzle early in the morning. Patchy fog early in the morning. A chance of rain. Vsby 1 to 3 nm early in the morning.
Sat night..E winds 5 to 10 kt. Waves 2 ft or less. Showers likely.
Sun..S winds 10 to 15 kt, becoming sw in the afternoon. Gusts up to 20 kt. Waves around 3 ft. Showers likely.
Sun night..W winds 10 to 15 kt with gusts up to 20 kt, becoming nw 5 to 10 kt after midnight. Waves around 3 ft in the evening, then 2 ft or less. A chance of showers in the evening.
Mon..NW winds 5 to 10 kt. Waves 2 ft or less.
Mon night..NW winds 5 to 10 kt. Waves 2 ft or less.
Tue..W winds around 5 kt. Waves 2 ft or less.
Tue night..W winds 5 to 10 kt. Waves 2 ft or less.
|ANZ400 634 Pm Est Thu Feb 22 2018 |
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure will slide across to the north of the region tonight as a nearly stationary boundary remains across just to our south. Meanwhile, a low pressure system will develop across the great lakes region and track eastward, dragging a cold front into our area on Saturday and stalling out across our southern zones. The boundary will start to lift northward as a warm front late Saturday into Sunday. Another low pressure system will cross to the north of our area with its attendant cold front moving through Sunday night. High pressure will build into the region through midweek. Another system will approach the region late Wednesday into Thursday.
7 Day Forecast for Marine Location Near Slaughter Beach, DEHourly EDIT Help
Area Discussion for - Philadelphia/Mount Holly, PA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 kphi 230008|
area forecast discussion
national weather service mount holly nj
708 pm est Thu feb 22 2018
High pressure will slide across to the north of the region
tonight as a nearly stationary boundary remains across just to
our south. Meanwhile, a low pressure system will develop across
the great lakes region and track eastward, dragging a cold front
into our area on Saturday and stalling out across our southern
zones. The boundary will start to lift northward as a warm front
late Saturday into Sunday. Another low pressure system will
cross to the north of our area with its attendant cold front
moving through Sunday night. High pressure will build into the
region through midweek. Another system will approach the region
late Wednesday into Thursday.
Near term until 6 am Friday morning
The area of rain that affected our region today was continuing
to move to our east and southeast this evening. The rain had
ended in eastern pennsylvania, the far upper DELMARVA and much
of new jersey (except CAPE may county) by 7:00 pm. There will be
a lull in the rain for much of the overnight period until
another area of rain begins building into our region from the
southwest toward morning.
The threat of freezing rain has ended in our far northern
counties for the time being. As a result, we have adjusted the
timing on the winter weather advisory to cover the next
potential for freezing rain on Friday morning. It is no longer
in effect for the tonight.
Low clouds will remain over our forecast area during the night.
The wind should be from the northeast and east around 5 to 12
mph, with some gusts near 20 mph on the coastal plain this
evening. Temperatures are anticipated to drop only a few degrees
from the 7:00 pm readings.
Short term 6 am Friday morning through 6 pm Friday
Freezing rain continues for far northern zones for much of
Friday morning, eventually changing to plain rain by Friday
afternoon. Aforementioned winter weather advisory will be in
effect from 7 am until 1 pm Friday.
For the rest of the region, plain rain, though a cold rain, as
highs will generally be in the 40s. With the low taking more of
a northerly path as opposed to the low today, looks as if the
bulk of the precip will fall across pa and much of nj, with
lesser amounts of rain and lower pops for the delmarva.
Long term Friday night through Thursday
Unsettled weather will continue through the weekend before a
quiet period begins for the early through mid week period.
Friday night through Sunday night... An unsettled period for the
region as several systems impact our areas weather.
A low pressure system will develop across the great lakes
region and track eastward towards our area, dragging a cold
front into our area on Saturday and stalling out across our
southern zones. The boundary will start to lift northward as a
warm front late Saturday into Sunday. Another low pressure
system will cross to the north of our area with its attendant
cold front moving through Sunday night.
With all of these systems will come periods of rain, including
some heavier rain over the weekend. With some pretty wet
antecedent conditions and frozen (or at least partially frozen)
ground, we may see some localized flooding occur, especially in
the more prone locations. Guidance is showing between 1-3 inches
through this period with the bulk of the precip falling north
and west of the i- 95 corridor. We will continue to monitor the
flooding threat but right now it looks like the mainstem rivers
will be mostly fine, at least through Sunday. Some residual
draining may cause some rises into Monday and we will monitor
that through the weekend.
Monday through Wednesday... High pressure will build across the
region allowing for the area to dry out and warm up a bit.
Temperatures should rebound from where we are over the weekend
and highs are expected to rise back into the upper 40s to mid
50s across the area.
Wednesday night through Thursday... The high breaks down and
slides to the southeast of the area. Meanwhile, an area of low
pressure will develop across the midwest and track to the east.
This system will push a warm front into DELMARVA on Thursday.|
Low pressure may develop along this boundary and then track
towards the coast Thursday night. Lots of uncertainty,
especially with front locations and timing, but another round of
rain is likely across parts of the area. With temps a bit
colder across the northern zones, a few flakes may fall early
Thursday if enough moisture remains across the region.
Aviation 00z Friday through Tuesday
The following discussion is for kphl, kpne, kttn, kabe, krdg,
kilg, kmiv, kacy and surrounding areas.
Tonight... Mainly ifr ceilings with localized MVFR and ifr
visibility restrictions. Northeast to east wind generally 5 to
10 knots. Gusts near 20 knots are possible this evening from
around kphl east and southward.
Friday... Ifr in rain and fog. Generally a northeast wind 5 to
10 knots becoming light and variable in the afternoon.
Friday night... Ifr conditions expected in rain and fog with
patchy drizzle and fog developing overnight. West to southwest
winds. Moderate confidence.
Saturday through Saturday night... Mainly ifr conditions
expected. A brief period of MVFRVFR may occur around midday but
conditions are expected to fall back down to ifr by the
afternoon evening as rain overspreads the area. Light north to
northwest winds early will become more easterly through the day.
Sunday... Ifr conditions expected with limited improvement
through the day. Confidence is low that we will return toVFR
during the day. East to southeast winds will become southwest by
the afternoon. Moderate confidence.
Sunday night through Tuesday...VFR conditions expected. West to
northwest winds becoming gusty to around 20 knots on Monday.
Tonight... SCA conditions on the ocean, with NE winds 15-20 kt
with gusts up to 30 kt and 5-7 ft seas. On lower de bay, sca
conditions possible until midnight with NE gusts near 25 kt. On
upper de bay, sub-sca conditions.
Friday... Winds gradually turn SE and diminish to around 10 kt.
Seas gradually subside to 2 to 4 ft late in the day.
Friday night through Saturday night... Sub-advisory conditions
are expected on the area waters.
Sunday and Sunday night... Seas are expected to build and exceed
5 feet on the ocean on Sunday. Winds will also start to pick
up, mainly on the southern waters, with wind gusts around 25
knots through Sunday evening. A small craft advisory will likely
Monday and Tuesday... Sub-advisory conditions are expected on
the area waters.
Phi watches warnings advisories
Pa... Winter weather advisory from 7 am to 1 pm est Friday for
Nj... Winter weather advisory from 7 am to 1 pm est Friday for
Marine... Small craft advisory until 4 pm est Friday for anz450>455.
Small craft advisory until midnight est tonight for anz431.
near term... Iovino
short term... Mps
long term... Meola
aviation... Iovino meola
marine... Meola 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|
|BRND1 - 8555889 - Brandywine Shoal Light, DE||11 mi||55 min||ENE 26 G 32||40°F||1035.1 hPa|
|DRSD1 - Delaware Reserve, DE||12 mi||115 min||NE 7||40°F||1036 hPa||40°F|
|LWSD1 - 8557380 - Lewes, DE||15 mi||55 min||ENE 22 G 26||40°F||45°F||1035 hPa|
|CMAN4 - 8536110 - Cape May, NJ||19 mi||55 min||ENE 14 G 21||39°F||43°F||1034.3 hPa|
|RDYD1 - 8551910 - Reedy Point, DE||44 mi||55 min||40°F||43°F||1035.6 hPa|
|OCIM2 - 8570283 - Ocean City Inlet, MD||45 mi||55 min||E 9.9 G 19||42°F||47°F||1035.4 hPa|
|DELD1 - 8551762 - Delaware City, DE||46 mi||55 min||E 12 G 14||41°F||43°F||1036 hPa|
|44009 - DELAWARE BAY 26 NM Southeast of Cape May, NJ||47 mi||95 min||NNE 27 G 33||42°F||43°F||7 ft||1033.5 hPa (+2.3)||42°F|
|CHCM2 - 8573927 - Chesapeake City, MD||48 mi||55 min||ENE 8 G 13||41°F||44°F||1036.4 hPa|
|CA2 - 8571892 - Cambridge, MD||48 mi||55 min||43°F||48°F||1035.8 hPa|
Wind History for Brandywine Shoal Light, DE(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Dover Air Force Base, DE||16 mi||29 min||ENE 12||10.00 mi||Overcast||40°F||37°F||92%||1035.9 hPa|
|Georgetown - Delaware Coastal Airport, DE||17 mi||31 min||ENE 13 G 20||7.00 mi||Light Rain||41°F||37°F||89%||1035.2 hPa|
|Wildwood, Cape May County Airport, NJ||22 mi||30 min||ENE 15 G 21||10.00 mi||Overcast||39°F||36°F||89%||1035.5 hPa|
Wind History from DOV (wind in knots)
|1 day ago||S||S||S||S||S||S||S||S||SW||SW|
|2 days ago||SW||S||SW||SW||SW||S||S||S||SW|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Mispillion River entrance |
Click for Map
Thu -- 01:11 AM EST 4.69 feet High Tide
Thu -- 06:43 AM EST Sunrise
Thu -- 07:51 AM EST 0.14 feet Low Tide
Thu -- 10:41 AM EST Moonrise
Thu -- 01:34 PM EST 4.08 feet High Tide
Thu -- 05:46 PM EST Sunset
Thu -- 08:06 PM EST -0.05 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Delaware Bay Entrance |
Click for Map
Thu -- 02:16 AM EST -0.00 knots Slack
Thu -- 05:56 AM EST -1.31 knots Max Ebb
Thu -- 06:42 AM EST Sunrise
Thu -- 08:47 AM EST 0.00 knots Slack
Thu -- 10:40 AM EST Moonrise
Thu -- 11:42 AM EST 1.29 knots Max Flood
Thu -- 02:37 PM EST -0.00 knots Slack
Thu -- 05:45 PM EST Sunset
Thu -- 06:03 PM EST -1.25 knots Max Ebb
Thu -- 08:49 PM EST 0.00 knots Slack
Thu -- 11:58 PM EST 1.59 knots Max Flood
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 (21,6,7,8)(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.