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Marine Weather and Tides Shady Side, MD Version 3.4

NOTICE 12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed. 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.

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Sunrise 6:44AM

Sunset 7:33PM

Friday April 3, 2020 1:26 AM EDT (05:26 UTC)

Moonrise 1:18PM

Moonset 3:14AM

Illumination 77%

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 Shady Side, MD

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Area Discussion for - Baltimore, MD/Washington

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FXUS61 KLWX 030055 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 855 PM EDT Thu Apr 2 2020

SYNOPSIS. Low pressure will loop offshore of the eastern US coast through Friday. High pressure will gradually build in from the Midwest over the weekend. A cold front will push through Sunday night, then stall nearby before returning north as a warm front next week.

NEAR TERM /UNTIL 6 AM FRIDAY MORNING/. A large and deep area of low pressure will continue retrograde west toward the New England Coast tonight while high pressure remains over the Midwest and Great Lakes. A strong gradient between these systems will continue to bring blustery northwest winds for most areas tonight, but it will not be as windy as today due to less mixing. A strengthening low-level jet may cause winds to approach advisory criteria (greater than 46 mph) along the highest ridges, but still do not feel confident on coverage for any sort of advisory at this time. Elsewhere, northwest winds will gust around 20 to 30 mph (but lighter in the central Shenandoah Valley).

Skies should remain mostly clear through the night, but the winds will help keep temperatures well above the dew points, so only expecting lows in the mid 30s to mid 40s for most areas. Wind chills will be near or below the freezing mark though. Winds will be lighter over the central Shenandoah Valley. Some frost is possible, but confidence for an advisory is too low at this time due to the stronger gradient keeping at least a light wind for most areas.

SHORT TERM /6 AM FRIDAY MORNING THROUGH SATURDAY NIGHT/. As the low continues its loop southward on Friday, the pressure gradient will remain tight. Gusty winds of at least 20-30 mph are likely through the day. Moisture associated with the low will also begin advecting back toward the area, so expect clouds to increase from northeast to southwest through Friday night (although the far southwestern CWA may remain clear). A few light showers may also approach north central Maryland Friday and Friday night, though most guidance indicates they will be dissipating as they encounter a drier low level airmass. Temperatures should remain fairly steady state with highs in the 50s/60s and lows in the 30s/40s.

The low will finally begin to move back out to sea later Friday night into Saturday as upper level blocking breaks down. This will finally allow high pressure to move in from the west and winds to relax. However, some clouds could hang around until Saturday afternoon as linger moisture remains under a subsidence inversion. Clouds will then increase again Saturday night as a weak frontal system approaches from the west. As heights build aloft, temperatures will be a little warmer, with most places in the 60s for highs.

LONG TERM /SUNDAY THROUGH THURSDAY/. Sunday should be mostly dry, with a surface ridge axis overhead for much of the day. However, a weakening cold front will push through the region later Sunday into Sunday evening. This front is likely to be mostly dry, but can't rule out a shower as it pushes through, so will maintain the slight chance POPs for that for western zones, with little to no POPs east of the Blue Ridge. Highs Sunday will be in the upper 60s to near 70.

By Monday, High pressure will be split to the north and south, with the weak frontal boundary placed somewhere in, or south, of the forecast area. Could see some showers along that boundary Monday afternoon. Not expecting much of a thermal boundary there, but likely more a wind shift. Temperatures expected to be in the mid 70s.

Tuesday and Wednesday are a bit tricky to make any exact time estimates on any rainfall that may occur. The region will be in northwesterly flow aloft, with several weak upper-level disturbances moving over/near the forecast area. So, generally throwing in chance POPs into the forecast for both days with highs in the mid 70s.

AVIATION /00Z FRIDAY THROUGH TUESDAY/. The main story through Friday will be gusty northwest winds. Gusts may subside a little tonight (15-25kt), but frequent gusts of 20 to 30 knots are expected for Friday. A stratocumulus deck will advect in from the northeast Friday afternoon into Saturday morning. These clouds will likely be VFR, though there is a low chance of MVFR. High pressure will bring lighter winds by Friday night, as well as maintain VFR conditions into Saturday night.

A weakening cold front will push through Sunday afternoon, with a slight chance for showers west of the Blue Ridge, so MRB could perhaps see a shower with this, but the front should primarily be dry. Then on Monday afternoon/evening, more showers possible across central VA as this weak front gets hung up. However, rain chances remain low, and any CIG/VSBY restrictions would be minimal. So, generally VFR conditions expected Sunday and Monday.

MARINE. Northwesterly winds will remain gusty through Friday. A Small Craft Advisory is in effect for the waters during this time. Winds may approach Gale-force criteria over the middle portion of the Bay overnight, but for now have limited to 30 kt.

Winds will gradually diminish Friday night into Saturday morning. An SCA is in effect for all of the waters Friday evening, and the middle portion of the Bay/lower Tidal Potomac river overnight. After that time, high pressure will bring lighter winds for the weekend.

No marine hazards are expected on Sunday or Monday.

TIDES/COASTAL FLOODING. Water levels continue to decrease under northwest winds and will be near or below astronomical normals by tonight-Friday. Tides may increase rather sharply by Saturday as onshore flow returns. The amount of increase will depend on if there is any excess anomaly left at the mouth of the Bay. Have sided with the less aggressive ESTOFS at this time, though fairly widespread minor flooding is within the realm of possibility this weekend, and moderate flooding at sensitive sites would be the worst-case scenario.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . Small Craft Advisory until midnight EDT Friday night for ANZ530-531-535-536-538-539. Small Craft Advisory until 6 AM EDT Saturday for ANZ532>534- 537-540>543.

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

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
TPLM2 - Thomas Point, MD	3 mi	86 min	WNW 19 G 22	55°F	50°F		1010.2 hPa (+0.6)	23°F
APAM2 - 8575512 - Annapolis, MD	9 mi	56 min		54°F			1008.7 hPa
CPVM2	10 mi	56 min		54°F
BSLM2 - Chesapeake Bay, MD	14 mi	116 min	NNW 6				1009 hPa
44062 - Gooses Reef, MD	21 mi	50 min	NW 16 G 18	54°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD	25 mi	56 min	NW 16 G 19	54°F			1008.7 hPa
FSNM2	25 mi	68 min	W 15 G 21	54°F			1008.6 hPa
TCBM2 - 8573364 - Tolchester Beach, MD	27 mi	62 min	NW 14 G 17	54°F	52°F		1008.9 hPa
BLTM2 - 8574680 - Baltimore, MD	29 mi	56 min	NNW 5.1 G 8	54°F	48°F		1008.7 hPa
CA2 - 8571892 - Cambridge, MD	29 mi	56 min	NW 17 G 21	56°F	53°F		1008.2 hPa
WASD2 - 8594900 - Washington, DC	30 mi	56 min	NW 8 G 14	55°F	55°F		1010.5 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD	32 mi	104 min	NNW 25 G 30				1009.2 hPa
SLIM2 - 8577330 - Solomons Island, MD	37 mi	56 min	NW 9.9 G 17	56°F	53°F		1009 hPa
NCDV2	48 mi	62 min	NNW 8.9 G 22	56°F	56°F		1009.6 hPa

Wind History for Francis Scott Key Bridge, MD

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Last 24hr

N11

NW14

NW12

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NW16 G20

NW18 G22

NW19

NW23 G30

NW23 G30

NW24 G29

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NW27 G33

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NW17 G21

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1 day ago

NE14

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N7

NE9 G13

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N11 G15

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N12 G15

NW10

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2 days ago

N7

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NE4 G7

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E14

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E13

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E12 G15

NE12 G17

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Annapolis, United States Naval Academy, MD	8 mi	32 min	WNW 10	10.00 mi	Fair	54°F	27°F	35%	1009.1 hPa
Bay Bridge Field, MD	11 mi	41 min	NW 10 G 18	10.00 mi	Fair	52°F	32°F	47%	1009.1 hPa
Easton / Newman Field, MD	21 mi	42 min	NW 15 G 19	10.00 mi	Fair	54°F	24°F	32%	1009.8 hPa
Camp Springs / Andrews Air Force Base, MD	22 mi	30 min	NW 8 G 15	10.00 mi	Fair	52°F	24°F	34%	1010.5 hPa
Fort Meade / Tipton, MD	23 mi	41 min	WNW 8 G 16	10.00 mi	Fair	50°F	28°F	43%	1010.5 hPa

Link to 5 minute data for KNAK

Wind History from NAK (wind in knots)

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N11

NW9

W6

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NW13 G19

NW16 G26

NW14 G24

NW15 G27

NW17 G27

NW15 G26

NW12 G28

NW19 G31

NW16 G27

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NW13 G21

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NW10

NW16 G25

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1 day ago

NE9 G16

NE7

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NE11 G19

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N11 G19

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Calm

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2 days ago

N7

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Calm

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N5

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E7

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E11

E13

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E11 G18

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NE9

NE9

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Tide / Current Tables for Thomas Point Shoal Light, Maryland

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Tide / Current Tables for Baltimore Harbor Approach, Maryland Current

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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 (1,6,7,8)

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Ground Weather Radar Station Dover AFB, DE

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