Monday, September20, 2021
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Marine Weather and Tides
Aquia Harbour, 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 6:54AMSunset 7:11PM Monday September 20, 2021 2:09 AM EDT (06:09 UTC) Moonrise 6:26PMMoonset 5:19AM Illumination 98% Phase: Waxing Gibbous; Moon at 14 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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ANZ536 Tidal Potomac From Indian Head To Cobb Island- 134 Am Edt Mon Sep 20 2021
.small craft advisory in effect from this afternoon through this evening...
Overnight..E winds 5 to 10 kt. Waves 1 ft.
Mon..E winds 5 to 10 kt. Waves 1 ft.
Mon night..E winds 5 to 10 kt. Gusts up to 20 kt until early morning. 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. Showers likely.
Wed night..S winds 5 to 10 kt. Waves 1 ft. Showers likely.
Thu..NW winds 5 kt. Waves less than 1 ft. Showers likely. A chance of tstms through the night, then a chance of showers after midnight.
Fri..NW winds around 5 kt. Waves 1 ft. A chance of showers in the morning. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 134 Am Edt Mon Sep 20 2021
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will move offshore today into Tuesday. A strong cold front will push through the region Wednesday into Thursday, bringing the chance for small craft advisory conditions. High pressure returns toward the end of the work week into the weekend.


7 Day Forecast for Marine Location Near Aquia Harbour, VA
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location: 38.42, -77.35     debug


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 200130 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 930 PM EDT Sun Sep 19 2021

SYNOPSIS. High pressure over northern New England will maintain a surface ridge into the area through Tuesday morning. 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 /THROUGH MONDAY/. High pressure at the surface is currently centered over northern New England, while an upper level ridge is located overhead. As a result, quiet weather conditions are expected overnight. Some high clouds are starting to stream in from the west, and some low clouds and/or fog may form later tonight, especially across southwestern portions of the forecast area. Lows tonight will be in the upper 50s to middle 60s for most.

SHORT TERM /MONDAY NIGHT THROUGH TUESDAY NIGHT/. Areas of stratus and/or fog along with some light rain or drizzle will be possible each morning due to onshore/easterly flow on the south side of high pressure system offshore the New England coast. By Tue night, flow strengthens and becomes more southerly with warm moist air advection into the region ahead of deepening trof over the mid MS Valley. Latest model trends indicate a much slower progression of upper trof and associated sfc front across the area mid week. Expect bulk of the rainfall to occur late Wed night and Thu.

LONG TERM /WEDNESDAY THROUGH SUNDAY/. Large upper level trough will continue to migrate towards the region late Tuesday night in Wednesday with an associated cold front being the main feature of concern for our area. Guidance has begun to agree on a slightly slower solution to the frontal passage for a late Wednesday into Thursday timeframe. Initial cloud cover and showers are expected to start sometime later Tuesday ahead of the front and may bring some moisture for the western portions of the CWA that evening. With this feature ahead of it bringing in some cloudier skies along with keeping dewpoints in the upper 60s should continue for now to alleviate the convective potential for this system. Bulk shear values continue to be fairly high across the area (40-45 kts) but CAPE continues to persist as being low for the time period (100-200 j/kg). May see a hydro threat with some probs of >2.0" PWATs for Wednesday afternoon into Thursday in place across the I-95 corridor. Still a number of days out so will need to continue to monitor this system as we get closer to the event.

Most models have most of the moisture out of the area overnight Thursday with only a few lingering showers across the I-95 corridor. This trough and frontal passage will bring a large area of cooler weather with highs dropping into the low to mid 70s on Friday and on through the weekend with high pressure building in from the SW. Large upper low may sag down far enough late in the weekend to bring some showers across portions of the area late Saturday into Sunday but no hazardous weather expected at this time.

AVIATION /01Z MONDAY THROUGH FRIDAY/. VFR conditions are expected tonight through tomorrow, although some low clouds or fog can't be ruled out at CHO tonight. VFR conditions will continue tomorrow. Conditions may drop to sub- VFR in association with low clouds both tomorrow night and Tuesday night.

Sub-VFR condtions expected Wednesday and Thursday with a strong cold front passing through much of the day on Wednesday and well into Thursday. VFR conditions should return from west to east starting around midday on Thursday as the cold front pushes through with MRB/CHO most likely clearing out first.

MARINE. Winds have diminished for the time being, but are forecast to strengthen again Mon afternoon and remain gusty through mid week. New SCAs have been issued for Mon afternoon and night.

Marine hazards expected for Wednesday and Thursday as a strong cold front impacts the waters with the possibility for Gale Warning criteria to be met.

TIDES/COASTAL FLOODING. Water levels begin to rise again Monday as onshore flow strengthens around high pressure system offshore of the New England coast. Minor coastal flooding will be possible beginning Monday and continuing through mid week.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . Small Craft Advisory from 2 PM Monday to midnight EDT Monday night for ANZ530>533-538>541. Small Craft Advisory from noon Monday to 6 AM EDT Tuesday for ANZ534-543. Small Craft Advisory from 2 PM to 9 PM EDT Monday for ANZ536- 537.

SYNOPSIS . LFR NEAR TERM . KJP SHORT TERM . LFR LONG TERM . ADM AVIATION . KJP/ADM MARINE . LFR/ADM TIDES/COASTAL FLOODING . LFR


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NCDV2 18 mi57 min SSE 2.9 G 2.9 71°F 80°F1022.9 hPa
WASD2 - 8594900 - Washington, DC 36 mi51 min ESE 2.9 G 5.1 70°F 79°F1023.4 hPa
BSLM2 - Chesapeake Bay, MD 42 mi39 min Calm 56°F 1023 hPa56°F
PPTM2 - 8578240 - Piney Point, MD 48 mi51 min SE 9.9 G 13
SLIM2 - 8577330 - Solomons Island, MD 48 mi51 min ESE 6 G 8 71°F 79°F1023.5 hPa

Wind History for Washington, DC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stafford, Stafford Regional Airport, VA6 mi74 minN 010.00 miPartly Cloudy66°F62°F89%1024.7 hPa
Quantico Marine Corps Airfield - Turner Field, VA7 mi73 minE 34.00 miLight Rain70°F59°F68%1023.9 hPa
Fredericksburg, Shannon Airport, VA12 mi74 minN 010.00 miMostly Cloudy67°F67°F100%1023 hPa
Warrenton-Fauquier Airport, VA22 mi74 minN 010.00 miMostly Cloudy66°F64°F91%1023.7 hPa
Manassas, Manassas Regional Airport/Harry P. Davis Field, VA23 mi73 minN 010.00 miPartly Cloudy64°F62°F93%1024.1 hPa
Fort Belvoir, VA23 mi73 minN 010.00 miFair62°F61°F97%1023.9 hPa

Link to 5 minute data for KRMN

Wind History from RMN (wind in knots)
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Last 24hrCalmCalmCalmCalmN6N5N5NE6NE5NE5E6E6NE7CalmCalmE7E6NE3NE4CalmCalmCalmCalmCalm
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE3CalmCalmCalmW4CalmCalmCalmCalmCalmCalmCalmCalm
2 days agoNE3NE3NE4N4NE3N5N4N3NE4N7NE6E8NE5E6NE5NE6E6NE3N3CalmCalmCalmCalmNW3

Tide / Current Tables for Aquia Creek, Virginia
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Aquia Creek
Click for Map
Mon -- 06:04 AM EDT     1.37 feet High Tide
Mon -- 06:19 AM EDT     Moonset
Mon -- 06:55 AM EDT     Sunrise
Mon -- 12:25 PM EDT     -0.01 feet Low Tide
Mon -- 06:30 PM EDT     1.34 feet High Tide
Mon -- 07:09 PM EDT     Sunset
Mon -- 07:25 PM EDT     Moonrise
Mon -- 07:54 PM EDT     Full Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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00.10.40.711.31.41.31.10.90.60.3000.30.60.91.11.31.31.210.70.4

Tide / Current Tables for Liverpool Point, Maryland
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Liverpool Point
Click for Map
Mon -- 12:19 AM EDT     0.08 feet Low Tide
Mon -- 06:10 AM EDT     1.59 feet High Tide
Mon -- 06:18 AM EDT     Moonset
Mon -- 06:55 AM EDT     Sunrise
Mon -- 12:48 PM EDT     0.06 feet Low Tide
Mon -- 06:34 PM EDT     1.57 feet High Tide
Mon -- 07:08 PM EDT     Sunset
Mon -- 07:25 PM EDT     Moonrise
Mon -- 07:54 PM EDT     Full Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.10.40.81.21.51.61.51.310.70.40.20.10.20.611.31.51.51.31.10.70.5

Weather Map
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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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