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Marine Weather and Tides
Version 3.4 |
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. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen |
| Sunrise 6:46AM | Sunset 7:04PM | Friday September 20, 2019 4:42 PM EDT (20:42 UTC) | Moonrise 9:53PM | Moonset 11:45AM | Illumination 58% |  |
ANZ454 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- 346 Pm Edt Fri Sep 20 2019
.small craft advisory in effect through Saturday afternoon...
Tonight..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. SWell mainly from the E with a dominant period of 13 seconds.
Sat..SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt late. Seas 3 to 5 ft. SWell mainly from the E with a dominant period of 13 seconds.
Sat night..SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt late. Seas 3 to 4 ft. SWell mainly from the E with a dominant period of 11 seconds.
Sun..SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 2 ft or less, then around 3 ft in the late morning and afternoon. SWell mainly from the E with a dominant period of 10 seconds.
Sun night..SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft.
Mon..SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft.
Mon night..SW winds 15 to 20 kt, becoming W around 10 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers.
Tue..NW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 3 to 4 ft. A chance of showers in the morning.
Tue night..N winds 5 to 10 kt. Seas around 3 ft.
Wed..N winds 5 to 10 kt, becoming sw in the afternoon. Seas around 3 ft.
Wed night..SW winds around 10 kt. Seas 3 to 4 ft.
.small craft advisory in effect through Saturday afternoon...
Tonight..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. SWell mainly from the E with a dominant period of 13 seconds.
Sat..SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt late. Seas 3 to 5 ft. SWell mainly from the E with a dominant period of 13 seconds.
Sat night..SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt late. Seas 3 to 4 ft. SWell mainly from the E with a dominant period of 11 seconds.
Sun..SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 2 ft or less, then around 3 ft in the late morning and afternoon. SWell mainly from the E with a dominant period of 10 seconds.
Sun night..SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft.
Mon..SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft.
Mon night..SW winds 15 to 20 kt, becoming W around 10 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers.
Tue..NW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 3 to 4 ft. A chance of showers in the morning.
Tue night..N winds 5 to 10 kt. Seas around 3 ft.
Wed..N winds 5 to 10 kt, becoming sw in the afternoon. Seas around 3 ft.
Wed night..SW winds around 10 kt. Seas 3 to 4 ft.
ANZ400 346 Pm Edt Fri Sep 20 2019
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure will slide southward tonight and then offshore through the weekend. A cold front will approach from the west on Monday, crossing the area Monday night. High pressure will return for the midweek period.
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure will slide southward tonight and then offshore through the weekend. A cold front will approach from the west on Monday, crossing the area Monday night. High pressure will return for the midweek period.
7 Day Forecast for Marine Location Near Lewes, DE
Hourly EDIT Helplocation: 38.78, -75.12 debug
Area Discussion for - Philadelphia/Mount Holly, PA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kphi 202010 afdphi area forecast discussion national weather service mount holly nj 410 pm edt Fri sep 20 2019 Synopsis High pressure will slide southward tonight and then offshore through the weekend. A cold front will approach from the west on Monday, crossing the area Monday night. High pressure will return for the midweek period. Near term until 6 am Saturday morning Another quiet night ahead tonight as high pressure remains to our south an a surface trough remains in place. Even with a couple of weak short wave vorticity impulses overnight, only periodic cloud cover is expected as there is limited moisture. As winds go light and temperatures cool, some patchy fog is again possible. Short term 6 am Saturday morning through Sunday Dry weather will continue through Saturday and Saturday night as high pressure remains to our south and a surface trough remains across the area. Temperatures will warm well above normal starting Saturday as ridging aloft builds across the east coast and return flow brings in warmer, more moist air. Vertical moisture remains limited, so precipitation is not expected through Saturday night, regardless of any short wave vorticity impulses. By Sunday, the ridge aloft breaks down while the high pushes offshore of the mid-atlantic coast and the weak surface trough remains near the area. This will allow for the return flow to continue through Sunday. Very warm temperatures and increasing moisture are expected through Sunday. Later Sunday, there is a chance some showers may develop to our west, but they are expected to stay out of our area and remain near the surface trough as it drifts westward through the day. Long term Sunday night through Friday Not much change in the extended period as we are largely dominated by high pressure. Main opportunity for precipitation will be with the frontal passage on Monday night. A cold front will approach the region from the west on Monday, crossing through the area Monday night. Low level moisture will be on the rise in the return flow around the departing high pressure. Flow looks to be pretty progressive with the front working through the area Monday night and then offshore by Tuesday morning. Some instability may develop head of the front with the best forcing right in front of and along the boundary. Only will mention a slight chance of thunder, mainly during the afternoon, with it waning once we head into the evening and lose the diurnal component. Once the front moves through, high pressure starts to build back into the region. There may be a weak front that moves through on Thursday but most guidance shows little moisture around and it may not be much more than a wind shift across our area. Aviation 20z Friday through Wednesday The following discussion is for kphl, kpne, kttn, kabe, krdg, kilg, kmiv, kacy and surrounding areas. Tonight... MostlyVFR conditions expected. Patchy fog may develop for a few locations, mainly rdg, miv, and acy. Southwest winds 5-10 knots or less early this evening, then light and variable overnight. Saturday...VFR conditions expected. Light and variable winds early, increasing out of the southwest 5-10 knots during the day. Outlook... Saturday night... MostlyVFR conditions expected. Patchy fog may |
develop for a few locations, mainly rdg, miv, and acy. Southwest winds 5-10 knots or less early this evening, then light and variable overnight. Sunday...VFR conditions expected. Light and variable winds early, increasing out of the southwest 5-10 knots during the day, with gusts 15-20 knots possible. Monday... MainlyVFR expected. MVFR or lower possible in scattered showers. Southwest winds around 5 to 10 knots with some gusts around 15 to 20 knots (more likely closer to kacy). Winds will turn to the west and then northwest late behind a cold frontal passage. Tuesday... MainlyVFR expected. Northwest winds around 5 to 10 knots. Wednesday... MainlyVFR expected. Light westerly winds. Marine Tonight... Small craft advisory continues on the atlantic ocean coastal waters through tonight with seas around 5-6 feet. Saturday... The small craft advisory will continue into the first half of the day, before dropping during the afternoon as seas subside. Outlook... Saturday night... Conditions expected to remain below advisory levels overnight. Sunday... Winds increase through the day Sunday and may reach advisory levels by late afternoon. Sunday night through Monday night... Seas may start to build to around 5 feet Sunday night, continuing through Monday night. A small craft advisory will likely be needed for the ocean waters. Tuesday through Wednesday... Seas subside into Tuesday morning, falling below advisory levels and remaining sub-advisory through Wednesday. Rip currents... a high risk for the development of dangerous rip currents continues through today as the long period swells and high seas continue from hurricane humberto. A rip current statement (under the coastal hazard message) is carrying the related info. The risk for Saturday will be at least moderate, but may possibly be high like Friday. Phi watches warnings advisories Pa... None. Nj... High rip current risk until 10 pm edt this evening for njz014- 024>026. De... High rip current risk until 10 pm edt this evening for dez004. Md... None. Marine... Small craft advisory until 4 pm edt Saturday for anz452>455. Small craft advisory until noon edt Saturday for anz450-451. Synopsis... Meola near term... Robertson short term... Robertson long term... Meola aviation... Robertson meola marine... Robertson meola |
Weather Reporting Stations
EDIT (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 |
| LWSD1 - 8557380 - Lewes, DE | 0 mi | 55 min | ESE 6 G 8 | 73°F | 72°F | 1023.2 hPa | ||
| BRND1 - 8555889 - Brandywine Shoal Light, DE | 14 mi | 55 min | 1023.8 hPa | |||||
| CMAN4 - 8536110 - Cape May, NJ | 16 mi | 61 min | WSW 5.1 G 5.1 | 69°F | 71°F | 1023.1 hPa | ||
| 44009 - DELAWARE BAY 26 NM Southeast of Cape May, NJ | 31 mi | 53 min | S 7.8 G 9.7 | 67°F | 71°F | 6 ft | 1023.7 hPa (-1.9) | |
| OCIM2 - 8570283 - Ocean City Inlet, MD | 31 mi | 61 min | SSW 9.9 G 12 | 69°F | 72°F | 1024.6 hPa | ||
| SJSN4 - 8537121 - Ship John Shoal, NJ | 39 mi | 61 min | ESE 7 G 8 | 70°F | 76°F | 1023.9 hPa |
Wind History for Lewes, DE
(wind in knots) EDIT (on/off) Help| 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 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 | |
| Last 24hr | E | SE | SE | SE | S | S | SW | SW | W | SW | SW | SW | SW | W G5 | SW | SW | SW G7 | SW G7 | NW | NW G10 | W G13 | S G5 | E G8 | SE G10 |
| 1 day ago | E | E G26 | E | E | E | E G23 | E G24 | NE G24 | NE G25 | NE G21 | NE G22 | NE | NE G21 | NE | NE | NE | NE | NE | NE G15 | NE G14 | NE | NE G13 | E G13 | E G10 |
| 2 days ago | E | E G11 | SE G8 | E G10 | E | E | E | E | E | E | E G15 | NE G16 | NE | NE | NE | NE | NE G19 | NE G23 | NE | E G22 | E G24 | E G21 | NE G22 | E G22 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Georgetown - Delaware Coastal Airport, DE | 14 mi | 49 min | WSW 7 | 10.00 mi | Fair | 78°F | 52°F | 40% | 1023.3 hPa |
| Wildwood, Cape May County Airport, NJ | 20 mi | 47 min | W 7 | 10.00 mi | Fair | 74°F | 53°F | 48% | 1023.7 hPa |
Link to 5 minute data for KGED
Wind History from GED (wind in knots)
| 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 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 | |
| Last 24hr | E | E | E | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | S | Calm | W | W | SW | |||
| 1 day ago | NE | NE | NE | NE | E | NE | E | |||||||||||||||||
| 2 days ago | E | E | SE | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | N | NE | NE | NE G20 | E |
Tide / Current Tables for Lewes, Fort Miles, Delaware
EDIT Weekend mode (on/off) (on/off) Help One Week of DataTide / Current data from XTide NOT FOR NAVIGATION
Tide / Current Tables for Delaware Bay Entrance, Delaware Current
EDIT (on/off) Help One Week of DataDelaware Bay Entrance
Click for Map
Fri -- 02:22 AM EDT -0.00 knots Slack
Fri -- 05:32 AM EDT -1.05 knots Max Ebb
Fri -- 06:45 AM EDT Sunrise
Fri -- 08:21 AM EDT 0.00 knots Slack
Fri -- 11:31 AM EDT 1.34 knots Max Flood
Fri -- 12:44 PM EDT Moonset
Fri -- 02:42 PM EDT -0.00 knots Slack
Fri -- 06:20 PM EDT -1.16 knots Max Ebb
Fri -- 07:00 PM EDT Sunset
Fri -- 09:21 PM EDT 0.00 knots Slack
Fri -- 10:52 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 02:22 AM EDT -0.00 knots Slack
Fri -- 05:32 AM EDT -1.05 knots Max Ebb
Fri -- 06:45 AM EDT Sunrise
Fri -- 08:21 AM EDT 0.00 knots Slack
Fri -- 11:31 AM EDT 1.34 knots Max Flood
Fri -- 12:44 PM EDT Moonset
Fri -- 02:42 PM EDT -0.00 knots Slack
Fri -- 06:20 PM EDT -1.16 knots Max Ebb
Fri -- 07:00 PM EDT Sunset
Fri -- 09:21 PM EDT 0.00 knots Slack
Fri -- 10:52 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
| 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 | 11 pm |
| 1 | 0.7 | 0.2 | -0.3 | -0.8 | -1 | -1 | -0.8 | -0.3 | 0.5 | 1 | 1.3 | 1.3 | 1 | 0.4 | -0.2 | -0.7 | -1 | -1.2 | -1.1 | -0.8 | -0.2 | 0.4 | 0.8 |
Weather Map
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GEOS Local Image of Mid-Atlantic 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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Philadelphia/Mount Holly, PA (16,3,4,5)
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Ground Weather Radar Station Dover AFB, DE
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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. |