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Marine Weather and Tides
Version 3.4 |
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 7:23AM | Sunset 6:20PM | Sunday October 22, 2017 2:18 AM EDT (06:18 UTC) | Moonrise 8:53AM | Moonset 7:26PM | Illumination 4% |  |
Marine Forecasts
EDIT (on/off) Help| ANZ533 Chesapeake Bay From North Beach To Drum Point- 132 Am Edt Sun Oct 22 2017 Overnight..S winds 5 kt. Waves flat. Sun..SE winds around 5 kt. Waves flat. Sun night..SE winds 5 kt. Waves less than 1 ft. Mon..S winds 5 to 10 kt. Waves 1 ft. Mon night..S winds 15 to 20 kt. Gusts up to 20 kt... Increasing to 30 kt after midnight. Waves 2 to 3 ft. Showers likely. Tue..S winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft. Showers likely. Tue night..SW winds 10 to 15 kt...becoming W 5 to 10 kt after midnight. Waves 3 ft...subsiding to 1 ft after midnight. Wed..NW winds 5 to 10 kt. Waves 1 ft. Thu..W winds 5 to 10 kt. Waves 1 ft. | ANZ500 132 Am Edt Sun Oct 22 2017 Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will move remain offshore through Monday. A cold front will affect the region Tuesday. A small craft advisory is likely for portions of the waters Monday through Wednesday. Gales are also possible for portions of the waters on Tuesday. |
7 Day Forecast for Marine Location Near Baden, MD
Hourly EDIT Helplocation: 38.66, -76.68 debug
Area Discussion for - Baltimore, MD/Washington
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 klwx 220042 afdlwx area forecast discussion national weather service baltimore md washington dc 842 pm edt Sat oct 21 2017 Synopsis High pressure will move east into the western atlantic through Monday. Low pressure and its attendant cold front will sweep through the area Tuesday. Troughing will remain overhead for much of the second half of the week. Near term until 6 am Sunday morning High pressure resudes across the northeast and mid atlantic section of the conus. In spite of this, ample upper level moisture has drifed atop the ridge, resulting in a deck of cirrus. Skies became mostly cloudy if not cloudy just prior to sunset, and remains so at this time. IR satellite and rap bufkit overview suggest there will be little change until the pre-dawn hours. Have made these adjustments in the sky grids. Will be assessing if low temperatures need to be bumped up slightly shortly. Short term 6 am Sunday morning through Monday night Quiet wx sun-sun night under high pressure. Clouds begin to increase Mon with showers expected by midday on the west and spreading east through the afternoon. Heavy showers with possible t-storms and gusty winds Mon night as cdfnt enters the area. Long term Tuesday through Saturday Strong front moving through Tuesday is main story in long term. This system looks potent with potential for a period of heavy, wind swept rain ahead of and along the primary cold front. Strong southerly fetch ahead of it should bring copious moisture north, but speed should limit flood concern. Gusty winds possible with very strong low level jet, but most likely any winds of a threatening nature will be limited to the cold frontal passage itself - low topped squalls possibly embedded within larger rain band is the concern. Timing remains a bit uncertain but right now, its favoring the am. Breezy and much cooler behind the front, with the coolest days likely Wednesday-Thursday. Some freeze issues are possible, though this cold shot looks very transitory and if it doesn't align with a good radiational night, it just might be chilly versus freezing. Upper trough plus wraparound moisture might result in a few showers |
Wednesday as well, especially in the mountains. If its cold enough in the higher terrain, these could well be snow showers. Drying out and moderating Friday with high pressure building in. Aviation 01z Sunday through Thursday Vfr conditions through Sunday evening. A southerly flow will strengthen ahead of a cold front overnight Sunday and Monday. Moisture streaming into the area will cause more clouds along with the possibility for subvfr cigs. Patchy fog is also possible overnight. The cold front will pass through overnight Monday into early Tuesday. Llws is possible during this time. A soaking rain is also expected with the frontal passage and there is a potential for heavy rain and ifr CIGS vis, along with gusty winds - perhaps isolated 30-40 knot gusts. Timing still a bit uncertain but right now favoring between 06z-12z early Tuesday. After that, NW wind may be gusty, but becomingVFR overall for the rest of the week. A few showers possible, mainly Wednesday, but cig vis reductions should be minimal. Marine Winds will begin to strengthen Mon in srly flow. SCA conditions likely by late Mon and solid SCA conditions expected tue. Gales possible Tuesday as strong cold front barrells through. Sca possible Wednesday as the system moves away and high pressure builds in. Lwx watches warnings advisories Dc... None. Md... None. Va... None. Wv... None. Marine... None. Synopsis... Lfr near term... Hts short term... Lfr long term... Rcm aviation... Bjl rcm marine... Rcm lfr |
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 |
| BSLM2 - Chesapeake Bay, MD | 8 mi | 48 min | Calm | 47°F | 1028 hPa | 47°F | ||
| 44062 - Gooses Reef, MD | 16 mi | 38 min | SW 3.9 G 3.9 | 66°F | 1027.7 hPa | |||
| TPLM2 - Thomas Point, MD | 21 mi | 78 min | SSE 7 G 8 | 66°F | 67°F | |||
| WASD2 - 8594900 - Washington, DC | 23 mi | 48 min | Calm G 0 | 59°F | 67°F | 1027.8 hPa | ||
| COVM2 - 8577018 - Cove Point LNG Pier, MD | 24 mi | 48 min | SSW 5.1 G 6 | 64°F | 1028.3 hPa | |||
| 44063 - Annapolis | 24 mi | 38 min | NW 1.9 G 3.9 | 62°F | 1027.6 hPa | |||
| APAM2 - 8575512 - Annapolis, MD | 25 mi | 48 min | 57°F | 1027.2 hPa | ||||
| SLIM2 - 8577330 - Solomons Island, MD | 26 mi | 48 min | NNW 1 G 1.9 | 60°F | 69°F | 1027.4 hPa | ||
| CPVM2 | 28 mi | 48 min | 65°F | 54°F | ||||
| NCDV2 | 30 mi | 48 min | Calm G 1 | 56°F | 67°F | 1026.7 hPa | ||
| CA2 - 8571892 - Cambridge, MD | 33 mi | 48 min | 56°F | 67°F | 1028.5 hPa | |||
| PPTM2 - 8578240 - Piney Point, MD | 37 mi | 60 min | SSE 5.1 G 6 | |||||
| 44043 - Patapsco, MD | 37 mi | 38 min | Calm G 1.9 | 63°F | 1027.9 hPa | |||
| FSKM2 - 8574728 - Francis Scott Key Bridge, MD | 39 mi | 48 min | N 1.9 G 1.9 | 61°F | 1027.7 hPa | |||
| BLTM2 - 8574680 - Baltimore, MD | 42 mi | 48 min | W 2.9 G 2.9 | 59°F | 70°F | 1027.4 hPa | ||
| TCBM2 - 8573364 - Tolchester Beach, MD | 45 mi | 48 min | E 2.9 G 4.1 | 56°F | 66°F | 1027.9 hPa | ||
| BISM2 - 8571421 - Bishops Head, MD | 46 mi | 48 min | SE 4.1 G 5.1 | 65°F | 66°F | 1028.1 hPa | ||
| 44042 - Potomac, MD | 47 mi | 38 min | S 3.9 G 3.9 | 65°F | 1027.1 hPa | |||
| LWTV2 - 8635750 - Lewisetta, VA | 47 mi | 48 min | Calm G 1 | 59°F | 67°F | 1027.6 hPa |
Wind History for Washington, DC
(wind in knots) EDIT (on/off) Help| 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 | 12 AM | 1 AM | |
| Last 24hr | -- | -- | -- | NW | W | NW | W | S | SW | SW | W | SW | S | SW | S | S | SE | SE | SW | -- | -- | -- | -- | -- |
| 1 day ago | SW | SW | NW | NW | NW | NW G6 | NW | NW | NW | NW G11 | NW | NW G10 | N G9 | NW G8 | W G9 | NW | NW | NW | -- | -- | NW | W | W | NW |
| 2 days ago | SW | SW | SE | S | S | S G8 | S | S | S | S | S | S G10 | S | S | S | -- | S | S | S | S | E |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Camp Springs / Andrews Air Force Base, MD | 15 mi | 22 min | N 0 | 10.00 mi | Fair | 51°F | 45°F | 80% | 1027.7 hPa |
| Washington/Reagan National Airport, DC, VA | 23 mi | 26 min | N 0 | 10.00 mi | Mostly Cloudy | 58°F | 51°F | 78% | 1027.7 hPa |
Wind History from ADW (wind in knots)
| 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 | 12 AM | 1 AM | 2 AM | |
| Last 24hr | Calm | Calm | Calm | Calm | Calm | Calm | Calm | N | E | Calm | Calm | Calm | Calm | Calm | E | E | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm |
| 1 day ago | Calm | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW G17 | N | NW | NW | N | NW | NW | Calm | Calm | Calm | Calm | S | Calm | Calm |
| 2 days ago | S | Calm | S | S | S | Calm | SW | SW | SW | SW | S | SW | SW | SW | S | S | S | S | Calm | SW | SW | SW | Calm | Calm |
Tide / Current Tables for Lower Marlboro, Patuxent River, Maryland
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of Data| Lower Marlboro Click for Map Sun -- 12:21 AM EDT 0.18 feet Low Tide Sun -- 06:07 AM EDT 1.88 feet High Tide Sun -- 07:23 AM EDT Sunrise Sun -- 09:53 AM EDT Moonrise Sun -- 12:29 PM EDT 0.11 feet Low Tide Sun -- 06:18 PM EDT Sunset Sun -- 06:35 PM EDT 2.11 feet High Tide Sun -- 08:25 PM EDT Moonset Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| 0.2 | 0.2 | 0.6 | 1.1 | 1.5 | 1.8 | 1.9 | 1.8 | 1.5 | 1.1 | 0.7 | 0.4 | 0.1 | 0.2 | 0.5 | 1 | 1.5 | 1.9 | 2.1 | 2.1 | 1.9 | 1.5 | 1.1 | 0.7 |
Tide / Current Tables for Broomes Island, 0.4 mile south of, Maryland Current
EDIT (on/off) Help One Week of Data| Broomes Island Click for MapFlood direction 290° true Ebb direction 110° true Sun -- 12:14 AM EDT 0.00 knots Slack Sun -- 02:36 AM EDT 0.30 knots Max Flood Sun -- 05:36 AM EDT -0.00 knots Slack Sun -- 07:22 AM EDT Sunrise Sun -- 08:31 AM EDT -0.39 knots Max Ebb Sun -- 09:52 AM EDT Moonrise Sun -- 11:16 AM EDT 0.00 knots Slack Sun -- 02:34 PM EDT 0.51 knots Max Flood Sun -- 06:10 PM EDT -0.00 knots Slack Sun -- 06:18 PM EDT Sunset Sun -- 08:25 PM EDT Moonset Sun -- 09:27 PM EDT -0.58 knots Max Ebb Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| -0.1 | 0.2 | 0.3 | 0.3 | 0.2 | 0.1 | -0.1 | -0.3 | -0.4 | -0.4 | -0.3 | -0.1 | 0.2 | 0.4 | 0.5 | 0.5 | 0.4 | 0.2 | 0 | -0.2 | -0.4 | -0.6 | -0.6 | -0.4 |
Weather Map and Satellite Images
(on/off) HelpWeather Map | IR Satellite Image from GEOS GOES Local Image of Mid-Atlantic EDIT  |
Wind Forecast for Baltimore, MD/Washington (2,6,7,8)
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Ground Weather Radar Station Dover AFB, DE
(on/off) Help
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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. |