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 7:24AM||Sunset 6:15PM||Tuesday October 24, 2017 7:16 AM EDT (11:16 UTC)||Moonrise 10:41AM||Moonset 8:47PM||Illumination 18%|
EDIT (on/off)  Help
|ANZ532 Chesapeake Bay From Sandy Point To North Beach- 432 Am Edt Tue Oct 24 2017 |
.gale warning in effect until 8 am edt this morning...
.small craft advisory in effect from 8 am edt this morning through this afternoon...
Rest of the overnight..S winds 20 kt with gusts to 40 kt. Waves 5 ft. Showers with a slight chance of tstms. Vsby 1 nm or less.
Today..S winds 15 to 20 kt. Gusts up to 30 kt... Diminishing to 20 kt in the afternoon. Waves 5 ft...subsiding to 3 ft in the afternoon. Showers likely. Vsby 1 to 3 nm.
Tonight..SW winds 10 to 15 kt...becoming nw after midnight. Gusts up to 20 kt. Waves 3 ft...subsiding to 1 ft after midnight.
Wed..NW winds 5 to 10 kt. Waves 1 ft.
Wed night..NW winds 5 to 10 kt. Waves 1 ft.
Thu..W winds 5 to 10 kt. Waves 1 ft.
Thu night..SW winds 5 kt. Waves less than 1 ft.
Fri..S winds 5 to 10 kt. Waves 1 ft.
Sat..SE winds 5 to 10 kt. Waves 1 ft. A chance of showers through the night. Winds and waves higher and visibilities lower in and near tstms.
|ANZ500 432 Am Edt Tue Oct 24 2017 |
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A cold front will cross the waters tonight, followed by a secondary cold front Wednesday. High pressure will return late in the week.
7 Day Forecast for Marine Location Near Annapolis, MDHourly EDIT Help
Area Discussion for - Baltimore, MD/Washington  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 klwx 241003|
area forecast discussion
national weather service baltimore md washington dc
603 am edt Tue oct 24 2017
A cold front will move across the chesapeake bay this morning.
High pressure will gradually build across the region during the
second half of the week.
Near term today
Personal note - after 33 years in government and 23 years at lwx
i'm calling it a day. It's been a great honor to serve my
country. Thank you.
And a very wild end to the ride it's been on this overnight
shift. I suppose there are records on it, but I doubt there have
been too many oct 24s that have featured 70 dewpoints at 2 am.
This is more like what youd see in late july. But over the past
two hours some of this moisture has been wrung out as the cold
front is now crossing the i-95 corridor.
The band of precipitation may be slow to clear the bay and will
hold onto at least pops until late afternoon.
This will be the final day of well above average temperatures
with highs in the 70s.
Short term tonight through Wednesday night
Upper trough axis crosses the area Wed (gfs) or Wed night
(ecmwf) with temps staying in the 60s during the day and 40s at
night. Any precip would be confined to the upslope areas.
Long term Thursday through Monday
Troughing will remain entrenched over the eastern CONUS through the
period as ridging persists out west and over the north atlantic.
This will lead to near normal temperatures late this week into the
weekend. A spoke of energy will rotate around an upper low stationed
just southwest of james bay likely bringing another period of
unsettled weather at some point next weekend, but timing placement
details remain fuzzy this far out.
Aviation 10z Tuesday through Saturday
Ifr MVFR ceilings at the major sites early this morning will see|
improvement as the morning progresses. ThenVFR tonight.
MainlyVFR expected late in the week with light flow.
We are seeing gale level gusts on the bay. This will be in
effect for the widest portion of the md section of the bay until
3 pm, further north until 8 am. Then SCA everywhere for the
remainder of the day.
Light flow with high pressure over the waters thu-fri.
Tides coastal flooding
Waters are running above normal on southerly flow. A warning has
been issued for anne arundel as water levels continue to climb.
Advisories are in effect along the western shore of the bay
Lwx watches warnings advisories
Md... Coastal flood advisory until 11 am edt this morning for mdz018.
Coastal flood warning until 1 pm edt this afternoon for mdz014.
Coastal flood advisory until 9 am edt this morning for mdz016.
Coastal flood advisory until 2 pm edt this afternoon for
Coastal flood advisory until 10 am edt this morning for mdz017.
Va... Coastal flood advisory until 9 am edt this morning for vaz057.
Marine... Small craft advisory until 6 pm edt this evening for
Gale warning until 8 am edt this morning for anz530>533-
Gale warning until 3 pm edt this afternoon for anz534-543.
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|
|APAM2 - 8575512 - Annapolis, MD||1 mi||47 min||70°F||1006.5 hPa|
|44063 - Annapolis||2 mi||37 min||S 19 G 25||70°F||1006.3 hPa|
|TPLM2 - Thomas Point, MD||6 mi||77 min||S 24 G 27||71°F||68°F|
|CPVM2||6 mi||47 min||71°F||71°F|
|44043 - Patapsco, MD||14 mi||37 min||S 18 G 23||70°F||1007.6 hPa|
|BSLM2 - Chesapeake Bay, MD||17 mi||47 min||S 7||62°F||1007 hPa||61°F|
|FSKM2 - 8574728 - Francis Scott Key Bridge, MD||17 mi||47 min||WSW 11 G 13||65°F||1006.6 hPa|
|BLTM2 - 8574680 - Baltimore, MD||21 mi||47 min||W 6 G 9.9||65°F||70°F||1006.6 hPa|
|TCBM2 - 8573364 - Tolchester Beach, MD||21 mi||47 min||SSE 6 G 14||71°F||67°F||1006.8 hPa|
|WASD2 - 8594900 - Washington, DC||29 mi||47 min||SW 8 G 11||62°F||67°F||1007.8 hPa|
|44062 - Gooses Reef, MD||29 mi||37 min||WSW 16 G 19||70°F||1007.4 hPa|
|CA2 - 8571892 - Cambridge, MD||35 mi||47 min||70°F||68°F||1008.8 hPa|
|COVM2 - 8577018 - Cove Point LNG Pier, MD||40 mi||47 min||SW 13 G 16||69°F||1008.5 hPa|
|44057 - Susquehanna, MD||45 mi||37 min||SSE 19 G 25||71°F||1006.8 hPa|
|SLIM2 - 8577330 - Solomons Island, MD||45 mi||47 min||SW 13 G 17||68°F||69°F||1007.8 hPa|
Wind History for Francis Scott Key Bridge NE Tower, MD(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Annapolis, United States Naval Academy, MD||1 mi||23 min||S 10 G 17||10.00 mi||Partly Cloudy||70°F||66°F||90%||1007.6 hPa|
|Bay Bridge Field, MD||8 mi||37 min||S 11||10.00 mi||Mostly Cloudy||70°F||66°F||88%||1007.1 hPa|
|Fort Meade / Tipton, MD||17 mi||32 min||SW 6||10.00 mi||Overcast||61°F||60°F||100%||1008.5 hPa|
|Baltimore, Baltimore-Washington International Airport, MD||18 mi||23 min||SSW 6||10.00 mi||Mostly Cloudy||63°F||63°F||100%||1007.5 hPa|
|Camp Springs / Andrews Air Force Base, MD||22 mi||21 min||SW 9||10.00 mi||Mostly Cloudy||60°F||57°F||92%||1008.6 hPa|
|Baltimore, Inner Harbor, MD||22 mi||23 min||no data||mi||65°F||62°F||90%||1007.4 hPa|
|College Park Airport, MD||23 mi||32 min||SW 6||10.00 mi||Overcast||62°F||57°F||86%||1008.1 hPa|
Wind History from BWI (wind in knots)
|1 day ago||Calm||Calm||E||E||SE||E||SE||SE||SE||SE||SE||SE||Calm||E||E||Calm||Calm||Calm||Calm||Calm||Calm||NE||NE||NE|
|2 days ago||W||Calm||Calm||E||SE||SE||E||E||E||SE||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Annapolis (US Naval Academy) |
Click for Map
Tue -- 03:11 AM EDT 0.56 feet Low Tide
Tue -- 07:25 AM EDT Sunrise
Tue -- 08:27 AM EDT 1.09 feet High Tide
Tue -- 11:41 AM EDT Moonrise
Tue -- 02:48 PM EDT 0.23 feet Low Tide
Tue -- 06:14 PM EDT Sunset
Tue -- 09:35 PM EDT 1.49 feet High Tide
Tue -- 09:47 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 -- 03:14 AM EDT -0.92 knots Max Ebb
Tue -- 06:52 AM EDT 0.00 knots Slack
Tue -- 07:24 AM EDT Sunrise
Tue -- 09:26 AM EDT 0.50 knots Max Flood
Tue -- 11:40 AM EDT Moonrise
Tue -- 12:13 PM EDT -0.00 knots Slack
Tue -- 03:01 PM EDT -0.50 knots Max Ebb
Tue -- 05:37 PM EDT 0.00 knots Slack
Tue -- 06:14 PM EDT Sunset
Tue -- 09:15 PM EDT 0.89 knots Max Flood
Tue -- 09:46 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 (7,2,3,4)(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.