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 7:23AM||Sunset 6:20PM||Sunday October 22, 2017 2:18 AM EDT (06:18 UTC)||Moonrise 8:53AM||Moonset 7:26PM||Illumination 4%|
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, MDHourly EDIT Help
Area Discussion for - Baltimore, MD/Washington  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 klwx 220042|
area forecast discussion
national weather service baltimore md washington dc
842 pm edt Sat oct 21 2017
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
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
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.
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
Lwx watches warnings advisories
near term... Hts
short term... Lfr
long term... Rcm
aviation... Bjl rcm
marine... Rcm lfr
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|
|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
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|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)
|1 day ago||Calm||NW||NW||NW||NW||NW||NW||NW||NW||NW||NW|
|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|
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
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
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 Baltimore, MD/Washington (2,6,7,8)(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.