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Marine Weather and Tides Naval Academy, MD Version 3.4

NOTICE 8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it. 8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue. 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 6:49AM

Sunset 7:10PM

Friday September 18, 2020 9:55 PM EDT (01:55 UTC)

Moonrise 7:02AM

Moonset 7:17PM

Illumination 3%

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 Naval Academy, MD

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Area Discussion for - Baltimore, MD/Washington

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FXUS61 KLWX 190103 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 903 PM EDT Fri Sep 18 2020

SYNOPSIS. Canadian high pressure will build from the Great Lakes into the Northeast and Middle Atlantic through the weekend, then gradually shift offshore during the first half of next week.

NEAR TERM /TONIGHT/. High pressure is centered over the Great Lakes this evening as the cold front that passed through the area earlier this morning pushes away from the East Coast and into the Atlantic. Between these two features, a decent gradient remains resulting in northerly breezes ushering in CAA across the Mid-Atlantic.

We are starting to see a surge of lower dewpoints being advected into the area with 40s being observed across northern Maryland and along and west of the Blue Ridge Mountains. Low to middle 50s are the norm further south and east of there. Dewpoints will continue to plummet overnight, dropping into the 30s for most by daybreak. This evenings upper air sounding from IAD sampled a healthy subsidence inversion just above 800mb with a uniform northerly winds below, while a PWAT of just 0.63 inches was measured. As a result, expecting mostly clear skies overnight as low temperatures drop into the mid-upper 30s across our higher elevations in the Alleghenies, with 40s elsewhere, hovering near 50 degrees in Baltimore/DC urban centers. Given our current temperature forecast overnight, and the expectation for winds to remain elevated, will forgo any Frost Advisories for our coldest locations.

SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/. Canadian high pressure will set up shop over the Northeast and Middle Atlantic this weekend. The pressure gradient between the high pressure center and low pressure/Hurricane Teddy well offshore will result breezy northeasterly winds at times. Otherwise, conditions will be dry. An upper-level disturbance will arc around the high during the second half of the weekend, but with a lack of moisture really the only impact should be a modest/brief uptick in cloud cover.

Given the strong high pressure and cooler than normal airmass, high temperatures are expected to stay in the 60s this weekend with lows in the 40s (except near 50 in the major urban centers). The higher terrain and elevated/sheltered valley locations may drop as low as the mid 30s at night resulting in the potential for patchy frost.

LONG TERM /MONDAY THROUGH FRIDAY/. On Monday morning, a 1038-mb surface anticyclone will be centered over upper New England with high pressure extending down into the Gulf of Mexico. Optimal nocturnal radiational cooling effects will be in place during this synoptic setup which supports some chilly overnight temperatures. While the metro city centers should stay in the upper 40s, many locations in the cooler suburbs may see upper 30s. Areas of frost are possible in the sheltered mountain river valley locales as readings plummet into the low/mid 30s. Ample sunshine during the day will bring highs back into the 60s which is around 9 to 12 degrees below climatology.

Synoptic gradients begin to tighten on Tuesday as a western Atlantic trough helps pull Hurricane Teddy toward the Canadian Maritimes. Given its current track, am not expecting any impacts across the region. The surface high does weaken considerably from earlier in the week which will gradually raise temperatures heading into the middle/latter part of next week. By next Wednesday and Thursday, highs could return into the upper 70s/low 80s. Overall, the period of dry weather beginning over the weekend will continue through much of next week. This has been a fairly consistent theme in the global ensemble guidance.

AVIATION /01Z SATURDAY THROUGH WEDNESDAY/. VFR conditions are expected through the weekend. Patchy river valley fog is possible each night, but should stay closer to the Appalachian Mountains. N to NE wind gusts up to 20 kt at times likely persist as high pressure builds into the Northeast and Teddy swirls northward well offshore.

Although overall winds have diminished some with the loss of diurnal mixing this evening, a strengthening wind field aloft/pressure surge may result in similar wind gust magnitude overnight especially near the metro terminals, albeit with less frequency. With a strong dome of high pressure remaining in place, expect VFR during the early part of next week as well.

MARINE. Northerly winds gusting 25 to 30 kt will persist through Saturday morning as high pressure builds to the north. The gradient should weaken somewhat Saturday afternoon into Saturday evening. Gusts to around 20 kt are possible across the middle Chesapeake Bay and tidal Potomac River Saturday afternoon and evening, but there wasn't quite enough confidence to extend the headline just yet. Winds likely strengthen again as Teddy begins to swirl northward well offshore during the second half of the weekend. This may result in gusts to around 20 kt out of a generally northeasterly direction. There is the potential for Small Craft Advisory conditions to persist into early next week given the increase in northerly/northeasterly winds in response to Teddy passing off to the east.

TIDES/COASTAL FLOODING. Northerly flow is keeping tides about a foot above normal near the lower part of the Chesapeake Bay. This will likely return northward in some fashion as winds become a little lighter and more northeasterly later this weekend into early next week.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . Small Craft Advisory until noon EDT Saturday for ANZ530>543.

SYNOPSIS . DHOF NEAR TERM . BKF SHORT TERM . DHOF LONG TERM . BRO AVIATION . BKF/BRO/DHOF MARINE . BRO/DHOF TIDES/COASTAL FLOODING . DHOF

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
APAM2 - 8575512 - Annapolis, MD	1 mi	55 min		68°F	75°F
CPVM2	4 mi	55 min		71°F				54°F
TPLM2 - Thomas Point, MD	7 mi	55 min	NNW 17 G 19	70°F	74°F		1019 hPa (+2.9)	53°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD	16 mi	55 min		67°F
FSNM2	16 mi	55 min		67°F
BSLM2 - Chesapeake Bay, MD	19 mi	145 min	Calm				1016 hPa
BLTM2 - 8574680 - Baltimore, MD	20 mi	55 min		67°F	76°F
TCBM2 - 8573364 - Tolchester Beach, MD	20 mi	55 min		68°F	74°F
44062 - Gooses Reef, MD	30 mi	37 min	NE 18 G 19	71°F	75°F
WASD2 - 8594900 - Washington, DC	30 mi	55 min		69°F	75°F
CA2 - 8571892 - Cambridge, MD	36 mi	55 min		67°F	74°F
COVM2 - 8577018 - Cove Point LNG Pier, MD	41 mi	67 min	NE 11 G 21				1018 hPa
SLIM2 - 8577330 - Solomons Island, MD	46 mi	55 min		70°F	76°F

Wind History for Francis Scott Key Bridge NE Tower, MD

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

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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	1 mi	61 min	N 11	10.00 mi	Mostly Cloudy	68°F	55°F	63%	1018.6 hPa
Bay Bridge Field, MD	7 mi	60 min	N 9 G 16	10.00 mi	Fair	68°F	48°F	49%	1018.6 hPa
Baltimore, Baltimore-Washington International Airport, MD	17 mi	61 min	N 8 G 19	10.00 mi	Partly Cloudy	66°F	45°F	47%	1018.9 hPa
Fort Meade / Tipton, MD	17 mi	60 min	N 5	10.00 mi	Fair	63°F	46°F	56%	1020 hPa
Baltimore / Martin, MD	24 mi	57 min	NNW 4	10.00 mi	Clear	64°F	50°F	60%	1019.6 hPa
Camp Springs / Andrews Air Force Base, MD	24 mi	59 min	N 9	10.00 mi	Fair	59°F	49°F	69%	1018.9 hPa
College Park Airport, MD	24 mi	60 min	N 0	10.00 mi	Fair	61°F	46°F	59%	1019 hPa

Link to 5 minute data for KNAK

Wind History from NAK (wind in knots)

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Tide / Current Tables for U.S. Naval Academy, Annapolis, 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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Ground Weather Radar Station Dover AFB, DE

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