Sunday, November28, 2021
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Marine Weather and Tides
Stafford Courthouse, 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 7:03AMSunset 4:52PM Sunday November 28, 2021 6:13 PM EST (23:13 UTC) Moonrise 12:17AMMoonset 1:41PM Illumination 29% Phase: Waning Crescent; Moon at 24 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- 339 Pm Est Sun Nov 28 2021
.small craft advisory in effect from 7 pm est this evening through Monday afternoon...
Rest of this afternoon..W winds 5 kt. Waves less than 1 ft.
Tonight..NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Mon..NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Mon night..W winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves 1 ft.
Tue..SW winds 5 to 10 kt. Waves 1 ft.
Tue night..W winds 5 kt. Waves less than 1 ft.
Wed..SW winds 5 kt...becoming s. Waves 1 ft.
Thu..SW winds 5 to 10 kt. Waves 1 ft.
ANZ500 339 Pm Est Sun Nov 28 2021
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A cold front will cross the area through this evening. High pressure will settle across the southeastern states Monday. Another cold front will cross the area Tuesday with high pressure moving back in by Wednesday. Small craft advisories may be needed for portions of the waters Tuesday into Tuesday night.


7 Day Forecast for Marine Location Near Stafford Courthouse, VA
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location: 38.41, -77.41     debug


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 281939 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 239 PM EST Sun Nov 28 2021

SYNOPSIS. A cold front will pass through the area late this afternoon into this evening. High pressure will build overhead late tonight into Monday, but a weak cold front will pass through the area Tuesday. High pressure will build to the south for Wednesday and Thursday before another cold front impacts the area late in the week.

NEAR TERM /THROUGH TONIGHT/. A southwest flow ahead of a cold front has allowed for a milder afternoon along with some sunshine. Some high clouds associated with a jetmax will pass through the area this afternoon/evening with stratocu clouds over the northern CWA.

An upper-level trough will dig over the region through tonight while low pressure associated with this trough over upstate New York this afternoon transfers its energy to a coastal low off the New England Coast. The cold front associated with this low will pass through our area this evening. Northwest winds will develop behind the boundary, and it will turn out blustery and chillier overnight. An upslope flow will likely trigger snow showers tonight along/west of the Allegheny Front. Despite There will be some instability and saturation underneath the subsidence inversion that coincides with the dendritic snowgrowth zone. However, overall moisture will be limited. Therefore, while snow accumulation is likely for the favored upslope areas, a winter weather headline has not been issued (accumulations most likely around 1-2").

SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/. High pressure will build from the west Monday while the upper- level trough axis moves offshore. Blustery and chilly conditions are expected ahead of the high, despite some sunshine. The high will briefly build overhead Monday evening, but another jetmax in the northern stream will be fast on its heals, passing through overnight. This system will also lack moisture, but our area will be in the favorable region of the upper-level jet (left exit), and we will be in the cyclonic shear side of the upper-level jet. Warm advection will be prevalent in the low- levels as well as a weak surface low to our north will be associated with this system. Therefore, a period of light snow cannot be ruled out overnight, with the best chance across northern MD, eastern WV, and northern VA (and also in the Allegheny Highlands). Snow may coat the ground in spots, but confidence remains low at this time due to the low-level dry air that will precede this. Will continue with chance pops for now.

The system will move off to the east Tuesday and high pressure will begin to center itself to our south. Therefore, it should turn out to be a milder afternoon. More upper-level disturbances will pass through Tuesday night in a zonal flow aloft, but it should turn out dry with high pressure nearby to the south and little moisture around.

LONG TERM /WEDNESDAY THROUGH SUNDAY/. A broad upper trough will sit above the eastern CONUS through the extended period, with a series of clipper systems swinging through the northeast. A high amplitude shortwave will descend from the Midwest into the Southeast CONUS Wednesday going into Thursday, potentially bringing light precipitation to the Alleghenies and our northern counties. WAA ahead of the shortwave will bring near and above normal temps to the region.

A cold front draped from a low moving through southeast Canada will pass the area late Thursday into Friday. Following the exit of this front, flow aloft becomes fairly zonal. Models disagree on precip in our area through the weekend, but any precip will likely be light and restricted to the mountains and our northern counties. Temperatures will be near normal on Wednesday before warming to the upper 50s to low 60s by Thursday, with lows in the mid 30s to mid 40s. A cold front passage will bring cooler temperatures Friday and into the weekend.

AVIATION /19Z SUNDAY THROUGH FRIDAY/. A cold front will pass through this evening. Northwest winds will increase behind the front. A small nocturnal inversion does decrease confidence for gusty winds tonight, but cold advection should at least cause times of gusty winds around 20 to 25 knots. Gusty winds will continue Monday (25 to perhaps even 30 knots at times) before diminishing early Monday evening.

A brief period of light snow is possible late Monday night into early Tuesday morning. Confidence is low at this time and the best chance will be across KMRB. VFR conditions are most likely Tuesday through Tuesday night with high pressure nearby to the south.

VFR conditions are expected Wednesday and Thursday. Light winds Wednesday will be out of the south, then shift westerly on Thursday.

MARINE. Northwest winds will increase behind a cold front this evening and an SCA is in effect for the waters through Monday, and for portions of the waters Monday evening. Winds should diminish for a period Monday night, but a south to southwest flow will increase again for Tuesday and an SCA may be needed for the open waters in the middle Bay and lower Tidal Potomac River late Tuesday into Tuesday night.

Winds over the waters on Wednesday should be below SCA criteria, but an SCA may be necessary over portions of the waters late Wednesday night into Thursday.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . Small Craft Advisory from 7 PM this evening to 6 PM EST Monday for ANZ530>532-535-536-538>540-542. Small Craft Advisory from 7 PM this evening to midnight EST Monday night for ANZ533-534-537-541-543.

SYNOPSIS . BJL NEAR TERM . BJL SHORT TERM . BJL LONG TERM . CAS AVIATION . BJL/CAS MARINE . BJL/CAS


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NCDV2 21 mi55 min SW 1.9G2.9 48°F 47°F1008.4 hPa
WASD2 - 8594900 - Washington, DC 38 mi55 min 0G0 51°F 46°F1008.7 hPa
BSLM2 - Chesapeake Bay, MD 45 mi163 min 0 56°F 1008 hPa33°F
PPTM2 - 8578240 - Piney Point, MD 50 mi55 min SSE 2.9G4.1

Wind History for Washington, DC
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for KRMN

Wind History from RMN (wind in knots)
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This day00000000000000000S70SW40000
1 day agoNW9NW9NW7NW5NW10
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2 days ago000SW6SW700000000NW12
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Tide / Current Tables for Aquia Creek, Virginia
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Aquia Creek
Click for Map
Sun -- 12:05 AM EST     1.20 feet High Tide
Sun -- 12:17 AM EST     Moonrise
Sun -- 06:50 AM EST     0.19 feet Low Tide
Sun -- 07:05 AM EST     Sunrise
Sun -- 12:34 PM EST     1.14 feet High Tide
Sun -- 01:40 PM EST     Moonset
Sun -- 04:49 PM EST     Sunset
Sun -- 07:12 PM EST     0.20 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Tide / Current Tables for Fredericksburg, Rappahannock River, Virginia
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Fredericksburg
Click for Map
Sun -- 12:17 AM EST     Moonrise
Sun -- 01:00 AM EST     2.69 feet High Tide
Sun -- 07:05 AM EST     Sunrise
Sun -- 08:06 AM EST     0.14 feet Low Tide
Sun -- 01:40 PM EST     Moonset
Sun -- 01:42 PM EST     2.63 feet High Tide
Sun -- 04:50 PM EST     Sunset
Sun -- 08:32 PM EST     0.24 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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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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