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 5:40AM||Sunset 8:34PM||Tuesday June 27, 2017 10:09 PM EDT (02:09 UTC)||Moonrise 8:42AM||Moonset 10:31PM||Illumination 16%|
EDIT (on/off)  Help
|ANZ541 Choptank River To Cambridge Md And The Little Choptank River- 944 Pm Edt Tue Jun 27 2017 |
.small craft advisory in effect until 6 am edt Wednesday...
.small craft advisory in effect from Wednesday evening through late Wednesday night...
Rest of tonight..NW winds 10 kt with gusts to 20 kt. Waves 2 ft. Isolated showers and tstms late this evening.
Wed..SW winds 5 to 10 kt. Waves 1 to 2 ft.
Wed night..S winds 10 to 15 kt. Gusts up to 25 kt in the late evening and overnight. Waves 1 to 2 ft.
Thu..S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
Thu night..S winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
Fri..SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Fri night..S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Sat..SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms through the night.
Sun..SW winds 5 to 10 kt. Waves 1 ft. A chance of tstms in the morning. A chance of showers. Winds and waves higher and visibilities lower in and near tstms.
|ANZ500 944 Pm Edt Tue Jun 27 2017 |
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A weak cold front will cross the chesapeake bay region tonight. High pressure will move over the area Wednesday before shifting to bermuda through Thursday. Small craft advisory conditions are possible over portions of the waters Thursday.
7 Day Forecast for Marine Location Near Tilghman Island, MDHourly EDIT Help
Area Discussion for - Baltimore, MD/Washington  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 klwx 280117|
area forecast discussion
national weather service baltimore md washington dc
917 pm edt Tue jun 27 2017
High pressure will build over the area late tonight and
Wednesday before moving offshore Thursday. Warm conditions
expected towards the end of the week and through the weekend.
Near term through Wednesday
A surface trough remains near the chesapeake bay this evening.
Scattered showers and thunderstorms are possible mainly across
far southern md and surrounding waters for the rest of the
evening. Northerly flow will continue to move into the mid-
atlantic region tonight as high pressure moves eastward. Dry
conditions expected through Wednesday.
A cool night expected across the region tonight with temps
ranging from the 40s in the mtns to the u50s by the chesapeake
bay and tidal potomac river.
High pressure will move overhead Wednesday and calm and clear
conditions are expected. Wednesday will be the last day of the
cooler than normal stretch of temperatures with temps only
reaching the u70s l80s. High pressure will move off the coast
by Wednesday evening and winds will become southerly by late wed
Short term Wednesday night through Thursday night
A significant warming trend is expected Thu and Fri as high
pressure remains offshore.
Long term Friday through Tuesday
As high pressure moves over the western atlantic, warmer temperatures
and increasing chances of showers and thunderstorms will develop
Friday through Sunday. The best chance for showers and storms will
be Saturday and Sunday.
A second area of high pressure will build into the region Monday and|
Tuesday, bringing more seasonable temperatures and dry conditions.
Aviation 01z Wednesday through Sunday
Vfr conditions through Sat night. Risk of showers and
thunderstorms on Sunday.
A pressure surge is expected tonight with SCA conditions
expected through the night.
Strong srly winds expected Wed night and thu. Scas have been
issued for Wed night.
No marine hazards expected Friday through Saturday night. Winds
southwest around 10 knots.
Lwx watches warnings advisories
Marine... Small craft advisory until 6 am edt Wednesday for anz530>533-
Small craft advisory from 9 pm Wednesday to 6 am edt Thursday
Small craft advisory until 8 am edt Wednesday for anz534-537-
near term... Hsk
short term... Lfr
long term... Klw
aviation... Hsk lfr klw
marine... Hsk lfr klw
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|
|44062 - Gooses Reef, MD||12 mi||49 min||Calm G 1.9||76°F||1016.6 hPa|
|TPLM2 - Thomas Point, MD||14 mi||69 min||WNW 8 G 9.9||76°F||77°F|
|CA2 - 8571892 - Cambridge, MD||16 mi||63 min||71°F||82°F||1016.5 hPa|
|44063 - Annapolis||19 mi||49 min||N 12 G 16||76°F||1016.1 hPa|
|CPVM2||20 mi||63 min||75°F||53°F|
|APAM2 - 8575512 - Annapolis, MD||21 mi||63 min||75°F||1015.6 hPa|
|BSLM2 - Chesapeake Bay, MD||21 mi||159 min||Calm||73°F||1015 hPa||63°F|
|COVM2 - 8577018 - Cove Point LNG Pier, MD||22 mi||63 min||SSW 6 G 8||72°F||1016.4 hPa|
|SLIM2 - 8577330 - Solomons Island, MD||28 mi||63 min||S 2.9 G 4.1||72°F||79°F|
|44043 - Patapsco, MD||31 mi||49 min||NNW 16 G 21||76°F||1016.7 hPa|
|TCBM2 - 8573364 - Tolchester Beach, MD||35 mi||63 min||NW 17 G 20||76°F||80°F||1016.4 hPa|
|FSNM2||37 mi||63 min||NW 19 G 22||74°F||1015.9 hPa|
|FSKM2 - 8574728 - Francis Scott Key Bridge, MD||37 mi||63 min||WNW 17 G 19||75°F||1015.7 hPa|
|BISM2 - 8571421 - Bishops Head, MD||37 mi||63 min||S 6 G 7||72°F||81°F||1015.9 hPa|
|44061 - Upper Potomac, MD||38 mi||51 min||NNW 7.8 G 9.7||72°F||80°F||1016.4 hPa|
|WASD2 - 8594900 - Washington, DC||39 mi||63 min||NNW 6 G 11||76°F||81°F||1016 hPa|
|BLTM2 - 8574680 - Baltimore, MD||41 mi||63 min||N 8.9 G 15||74°F||78°F||1015.9 hPa|
|PPTM2 - 8578240 - Piney Point, MD||41 mi||63 min||S 4.1 G 5.1|
|44042 - Potomac, MD||47 mi||49 min||Calm G 1.9||73°F||1015.3 hPa|
|NCDV2||47 mi||63 min||Calm G 1||71°F||79°F||1015 hPa|
Wind History for Cambridge, MD(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Easton / Newman Field, MD||15 mi||74 min||N 0||10.00 mi||Partly Cloudy||70°F||53°F||57%||1017.3 hPa|
|Bay Bridge Field, MD||18 mi||79 min||W 3||10.00 mi||Mostly Cloudy||72°F||59°F||65%||1015.9 hPa|
|Cambridge-Dorchester Airport, MD||19 mi||79 min||N 0||10.00 mi||Fair||70°F||57°F||64%||1015.9 hPa|
|Annapolis, United States Naval Academy, MD||20 mi||75 min||WNW 8||10.00 mi||Mostly Cloudy||73°F||53°F||50%||1016 hPa|
Wind History from ESN (wind in knots)
|1 day ago||N||NW||NW||Calm||Calm||Calm||Calm||Calm||NW||NW||W||N|
|2 days ago||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||NW||N||N||N||W||NW||NW||NW||Calm||W||Calm||Calm||NW||N||N |
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
Click for Map
Tue -- 12:39 AM EDT 0.39 feet Low Tide
Tue -- 05:42 AM EDT Sunrise
Tue -- 06:53 AM EDT 2.25 feet High Tide
Tue -- 09:42 AM EDT Moonrise
Tue -- 02:17 PM EDT 0.39 feet Low Tide
Tue -- 07:27 PM EDT 1.65 feet High Tide
Tue -- 08:34 PM EDT Sunset
Tue -- 11:31 PM EDT Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Baltimore Harbor Approach |
Click for Map
Tue -- 01:57 AM EDT -0.70 knots Max Ebb
Tue -- 04:37 AM EDT 0.00 knots Slack
Tue -- 05:41 AM EDT Sunrise
Tue -- 08:09 AM EDT 1.14 knots Max Flood
Tue -- 09:41 AM EDT Moonrise
Tue -- 11:27 AM EDT -0.00 knots Slack
Tue -- 02:48 PM EDT -1.17 knots Max Ebb
Tue -- 06:20 PM EDT 0.00 knots Slack
Tue -- 08:35 PM EDT Sunset
Tue -- 09:09 PM EDT 0.78 knots Max Flood
Tue -- 11:32 PM EDT Moonset
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 (22,6,7,8)(on/off)  Help
Ad by Google
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.