Sunday, September19, 2021
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Marine Weather and Tides
Belle Haven, VA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:52AMSunset 7:11PM Sunday September 19, 2021 10:05 AM EDT (14:05 UTC) Moonrise 5:59PMMoonset 4:12AM Illumination 96% Phase: Waxing Gibbous; Moon at 13 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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ANZ535 Tidal Potomac From Key Bridge To Indian Head- 735 Am Edt Sun Sep 19 2021
Today..NE winds 5 kt. Waves less than 1 ft.
Tonight..NE winds around 5 kt. Waves 1 ft.
Mon..E winds 5 to 10 kt. Waves 1 ft.
Mon night..E winds 5 to 10 kt. Waves 1 ft.
Tue..E winds 5 to 10 kt. Waves 1 ft.
Tue night..SE winds 5 to 10 kt. Waves 1 ft.
Wed..SE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the morning, then showers likely.
Thu..W winds 5 kt. Waves less than 1 ft. A chance of showers.
ANZ500 735 Am Edt Sun Sep 19 2021
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build overhead later today before moving offshore Monday and Tuesday. A strong cold front will push through the region mid-week, bringing the chance for sca conditions to return.


7 Day Forecast for Marine Location Near Belle Haven, VA
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location: 38.78, -77.05     debug


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 190740 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 340 AM EDT Sun Sep 19 2021

SYNOPSIS. A cold front will drop southward today as high pressure to our north settles over New England. Mostly dry and seasonable weather is slated through Tuesday. A strong cold front will pass through the area later Wednesday into Thursday and Canadian high pressure will build overhead late next week.

NEAR TERM /UNTIL 6 PM THIS EVENING/. Aside from some patchy fog across portions of the region early this morning, conditions remain quiet across the CWA.

Rex blocking over the central US continues as upper level ridging gradually shifts eastward over the next few days. Surface high pressure to our north will shift over New England today, resulting in a weak cold front dropping southward. Dry conditions are expected today, aside from the slight chance for an isolated shower over the southern Potomac Highlands and the Central Shenandoah Valley as moisture advection over the Gulf states tries to nudge northward. However, given the influence from the high, thinking it should remain mostly dry. Otherwise, expect mostly sunny skies with temperatures in the upper 70s to low 80s across the region.

SHORT TERM /6 PM THIS EVENING THROUGH TUESDAY/. Upper level ridge will crest over the Mid Atlantic region by early Monday morning as surface high pressure develops offshore; inducing an easterly flow. The high will reside offshore through Tuesday as mostly dry and seasonable weather is expected to continue during this time. As an upper level trough approaches from the west, cloud cover will increase late Tuesday as well as an increased chance for showers Tuesday night into Wednesday.

LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/. For Wednesday, the aforementioned upper level trough will sharpen and become negatively tilted before eventually cutting off over the Ohio Valley into Thursday. A strong cold front associated with this system will push through late Wednesday into Thursday bringing rain to the entire region. Thinking the threat for severe weather is still low at this time, as instability still seems to be lacking. Even with a lot of shear present, still have to at least have a little bit of instability to work with, and no guidance is showing that at this time.

For Thursday night, expecting the rain to be gone and for skies to clear out with much cooler temperatures. Lows will reach the mid to upper 50s along/east of I-95, then the 40s to low 50s further west. May even see the potential for some frost across the Allegheny Front.

Friday through the weekend will be cooler, with highs in the low to mid 70s each day. The primary upper-low will try to spin through the region towards the end of the period, which could bring some showers and continued cooler temperatures.

AVIATION /08Z SUNDAY THROUGH THURSDAY/. Mainly VFR across the terminals early this morning with the exception of MRB and CHO which is MVFR due to fog. Guidance continues to indicate some lower VSBYs developing over MTN through daybreak as fog ensues. However IAD, BWI, and DCA are all expected to remain VFR at this time. Any fog is expected to quickly burn off shortly after daybreak. Calm winds will become more northerly today before shifting to the east later this afternoon.

Similar conditions are expected through Tuesday with pre-dawn fog mainly along and west of the Blue Ridge but generally VFR conditions along with a mix of sun and clouds during the daytime hours.

Sub-VFR conditions expected Wednesday into Thursday with a strong cold front pushing through the region. Thoughts on timing for now are late Wednesday into early Thursday for best rain chances. Conditions should return to VFR by late Thursday in the wake of the cold front.

MARINE. Northerly channeling is expected today with SCA conditions likely over the Chesapeake Bay. Winds relax this afternoon, but marginal SCA conditions could persist over the southern waters through early next week.

For Wednesday into Thursday, marine hazards are expected sometime during the period as a cold front passes over the waters.

TIDES/COASTAL FLOODING. A Coastal Flood Advisory is in effect for Annapolis. Anomalies have remain elevated over the last several hours however have been decreasing over the past hour. Nevertheless, the threat for minor flooding remains too close to call thus prompting the advisory.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . Coastal Flood Advisory until 7 AM EDT this morning for MDZ014. VA . None. WV . None. MARINE . Small Craft Advisory until 11 AM EDT this morning for ANZ531>534-539>541-543.

SYNOPSIS . SOUZA NEAR TERM . SOUZA SHORT TERM . SOUZA LONG TERM . CJL AVIATION . SOUZA/CJL MARINE . SOUZA/CJL TIDES/COASTAL FLOODING .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WASD2 - 8594900 - Washington, DC 7 mi47 min NE 4.1 G 9.9 75°F 78°F1021.7 hPa
BSLM2 - Chesapeake Bay, MD 18 mi95 min NE 1 59°F 1021 hPa58°F
NCDV2 32 mi47 min N 2.9 G 8 77°F 79°F1020.8 hPa
APAM2 - 8575512 - Annapolis, MD 33 mi47 min N 8.9 G 13 74°F 79°F1021.5 hPa
44063 - Annapolis 34 mi35 min NNE 14 G 18 71°F 77°F1024.1 hPa
TPLM2 - Thomas Point, MD 34 mi65 min N 15 G 17 72°F 77°F1022.2 hPa (+1.6)
44062 - Gooses Reef, MD 37 mi35 min NNE 14 G 18 73°F 78°F2 ft1022.7 hPa
CPVM2 38 mi47 min 73°F 61°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 41 mi47 min NNE 7 G 9.9 71°F 1022 hPa
FSNM2 41 mi47 min N 8 G 9.9 70°F 1021.9 hPa
BLTM2 - 8574680 - Baltimore, MD 42 mi47 min NE 8.9 G 12 71°F 79°F1021.7 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 44 mi47 min N 15 G 17 73°F 1021.4 hPa
SLIM2 - 8577330 - Solomons Island, MD 45 mi47 min NE 12 G 15 74°F 79°F1021.1 hPa

Wind History for Washington, DC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Washington/Reagan National Airport, DC, VA6 mi73 minNE 910.00 miA Few Clouds74°F62°F67%1021.9 hPa
Fort Belvoir, VA8 mi69 minN 010.00 miFair74°F65°F73%1021.9 hPa
Camp Springs / Andrews Air Force Base, MD10 mi69 minNE 910.00 miFair71°F63°F77%1021.8 hPa
College Park Airport, MD15 mi70 minNNE 510.00 miFair71°F61°F73%1021.7 hPa
Quantico Marine Corps Airfield - Turner Field, VA23 mi69 minNNE 123.00 miFair with Haze75°F66°F74%1021.9 hPa

Link to 5 minute data for KDCA

Wind History from DCA (wind in knots)
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Last 24hrCalmN5E4S6S5S6S6S6S7S6CalmS3SW4CalmCalmCalmCalmN5N6NE6N7N11N10NE9
1 day agoNE8NE8NE8NE8NE7NE6N8E4NE4SE5NE6NE5E4NE5N3NE4NE4N3E3CalmN3E3NE4Calm
2 days agoN6NE7NE3NE6E4NE7N7N5W4N7N7NE8NE6NE8NE9NE7NE8NE10E8NE7NE6NE7N7N9

Tide / Current Tables for Alexandria, Virginia
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Alexandria
Click for Map
Sun -- 01:42 AM EDT     0.24 feet Low Tide
Sun -- 05:11 AM EDT     Moonset
Sun -- 06:53 AM EDT     Sunrise
Sun -- 07:36 AM EDT     3.31 feet High Tide
Sun -- 02:20 PM EDT     0.16 feet Low Tide
Sun -- 06:58 PM EDT     Moonrise
Sun -- 07:09 PM EDT     Sunset
Sun -- 08:03 PM EDT     3.17 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.40.30.71.42.22.93.23.32.92.41.81.20.60.20.30.91.72.433.232.41.8

Tide / Current Tables for Mount Vernon, Virginia
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Mount Vernon
Click for Map
Sun -- 01:17 AM EDT     0.19 feet Low Tide
Sun -- 05:12 AM EDT     Moonset
Sun -- 06:53 AM EDT     Sunrise
Sun -- 07:11 AM EDT     2.61 feet High Tide
Sun -- 01:55 PM EDT     0.13 feet Low Tide
Sun -- 06:58 PM EDT     Moonrise
Sun -- 07:09 PM EDT     Sunset
Sun -- 07:38 PM EDT     2.51 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.20.30.71.422.42.62.52.11.71.20.70.30.10.40.91.62.12.42.52.21.71.2

Weather Map
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GEOS Local Image of    EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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