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Marine Weather and Tides Shenandoah Farms, VA Version 3.4

NOTICE 10/9/2019 Updated the Marine Zones. 9/4/2019 Fixed the weather maps due to NOAA moving them. 7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

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Sunrise 7:15AM

Sunset 4:51PM

Thursday December 5, 2019 12:12 PM EST (17:12 UTC)

Moonrise 1:38PM

Moonset 12:34AM

Illumination 63%

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.

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7 Day Forecast for Marine Location Near Shenandoah Farms, VA

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Area Discussion for - Baltimore, MD/Washington

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FXUS61 KLWX 051518 CCA AFDLWX

Area Forecast Discussion . CORRECTED National Weather Service Baltimore MD/Washington DC 1018 AM EST Thu Dec 5 2019

SYNOPSIS. High pressure will build toward the Mid-Atlantic from the southern U.S. through tonight. On Friday, a cold front will cross the region from the west. Another area of high pressure will follow for the weekend. The next low pressure system will approach early next week.

NEAR TERM /THROUGH TONIGHT/.

No real changes to the near term from the previous discussion.

Noting isolated snow flurries on radar moving through northern MD under a NW flow, although it does not appear that anything measurable is reaching the ground. With the high continuing to move overhead, increasing subsidence should suppress any residual flurry activity. With good mixing through the BL, expect gusty NW winds up to 35 mph to persist throughout the afternoon, before relaxing tonight. Air temperatures will rise into the 40s to lower 50s, though the wind will make it feel chillier. The high will build across the southeastern states tonight, allowing winds to diminish. Low temperatures will be in the upper 20s to lower 30s, though mid/high clouds could thicken enough to keep it a bit warmer.

SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/. A weak area of low pressure will move through the Great Lakes on Friday, with a trailing cold front crossing during the afternoon or early evening. Shortwave troughs will be located well to our north and south, and westerly flow off the surface will promote low level drying east of the Appalachians. Thus not expecting much precipitation with this system, though there could be some light showers along/west of the Appalachians. These showers would mainly be rain, but could end as snow. There will be a bit of a warm up ahead of the front, with highs in the upper 40s and lower 50s.

Behind the front, a large/strong area of high pressure originating from Canada will build in to start the weekend. Gusty winds Friday evening will diminish by Saturday. Cold advection will result in lows below freezing in many areas and highs in the 40s.

LONG TERM /SUNDAY THROUGH WEDNESDAY/. High pressure will move east and offshore from the New England coast on Sunday while flow remains zonal aloft. Winds will become southerly on Sunday, and this will advect warm and moist air into our region. Return flow, the increase in moisture and shortwave energy aloft will increase the chance for showers Sunday night into Monday.

A low pressure system over the Great Lakes will push its associated cold front eastward late on Monday. The front will be moving across our area on Tuesday. Chance of showers will continue Monday night into Tuesday while southerly flow continues to advect moisture into our area. Trough axis aloft will move across on Wednesday while surface high pressure starts building east and overhead into Thursday.

AVIATION /14Z THURSDAY THROUGH MONDAY/. As an upper level disturbance exits this morning, the risk of any showers is quickly ending. Ceilings are in the VFR range, and should scatter out as the day progresses. Northwest winds have increased, with some gusts of 25-30 knots persisting through the day. Winds will diminish with sunset as high pressure builds south of the area tonight.

A cold front will cross the area Friday afternoon or early evening but will likely be dry. Gusty northwest winds greater than 20 kt are possible in its wake. No significant weather later Friday night through Saturday night with high pressure.

VFR conditions expected for Sunday into Sunday night. Chance of precipitation increases late Sunday night and remains through Tuesday. Periods of sub-VFR conditions are possible during this time.

MARINE. Gusty NW winds will continue to uptick this morning and continue into early this evening. A Small Craft Advisory is in effect for all waters today, and did extend until 9 PM for the wider waters since it could take some time for winds to subside. Gusts of 20 to 30 kts are likely. With high pressure to the south later tonight, winds will subside.

A cold front will approach Friday and push to the east Friday evening. Mixing ahead of the front is questionable, so did not have the confidence to issue a late third period advisory. Some of the waters will likely need an advisory Friday night with a surge of gusty NW/N winds.

High pressure will build overhead for Saturday through Saturday night with lighter winds expected.

Sub-SCA conditions expected Sunday into Monday over the waters. SCA may be needed on Tuesday with an approaching cold front.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . Small Craft Advisory until 9 PM EST this evening for ANZ531>534-537>543. Small Craft Advisory until 6 PM EST this evening for ANZ530- 535-536.

SYNOPSIS . ADS NEAR TERM . BJL/ADS/MSS SHORT TERM . ADS LONG TERM . IMR AVIATION . BJL/ADS/MSS/IMR MARINE . BJL/ADS/MSS/IMR

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
WASD2 - 8594900 - Washington, DC	54 mi	54 min	WNW 14 G 22				1015.1 hPa
BSLM2 - Chesapeake Bay, MD	71 mi	162 min	NW 6	42°F			1013 hPa	27°F
BLTM2 - 8574680 - Baltimore, MD	78 mi	60 min	NNW 12 G 18	44°F	51°F		1013.3 hPa

Wind History for Washington, DC

(wind in knots)    EDIT      (on/off)   Help

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SW5 G9

SW5 G8

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SW4 G8

N2

NW6 G14

NW4 G8

NW5 G10

NW4 G7

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NW4 G10

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W10 G15

NW8 G15

NW9 G14

NW8 G13

W7 G10

NW7 G16

NW7 G14

NW6 G14

NW12 G23

1 day ago

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Winchester Regional, VA	12 mi	17 min	WNW 14 G 18	10.00 mi	Partly Cloudy	41°F	23°F	49%	1014.6 hPa
Leesburg / Godfrey, VA	24 mi	17 min	NW 17 G 24	10.00 mi	Fair	0°F	0°F	%	1015.2 hPa

Link to 5 minute data for KOKV

Wind History from OKV (wind in knots)

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SW7

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W14 G18

W16 G25

W13 G25

W15 G21

W9 G17

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W10 G16

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W7

W14 G23

W13 G21

W14 G21

W13 G17

W18 G25

W10 G20

W12 G19

NW17 G21

NW17 G27

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NW18 G24

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NW13 G18

NW13 G18

NW18 G22

NW11 G16

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Calm

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NW13

NW13 G18

NW14 G21

NW14 G21

NW7 G17

NW11

NW9

NW9

NW13 G25

NW13 G19

NW13 G18

NW13 G20

NW12 G18

NW12 G21

NW16 G22

NW13 G20

NW14 G21

NW19 G22

NW15 G19

NW12 G17

W19 G27

NW7

NW12 G23

NW11 G23

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Tide / Current Tables for Chain Bridge, D.C.

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Tide / Current Tables for Chain Bridge, one mile below, D.C.

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Weather Map

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GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East

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Wind Forecast for Baltimore, MD/Washington (12,3,4,5)

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Ground Weather Radar Station Sterling, VA

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