Thursday, January23, 2020
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Marine Weather and Tides
Highland Beach, 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.

Sunrise 7:17AMSunset 5:17PM Thursday January 23, 2020 2:59 AM EST (07:59 UTC) Moonrise 6:29AMMoonset 4:08PM Illumination 4% Phase: Waning Crescent; Moon at 28 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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ANZ532 Chesapeake Bay From Sandy Point To North Beach- 1238 Am Est Thu Jan 23 2020
Overnight..W winds 5 kt. Waves flat.
Thu..E winds 5 kt. Waves flat.
Thu night..NE winds around 5 kt. Waves flat.
Fri..E winds 5 to 10 kt. Waves 1 ft.
Fri night..E winds 10 to 15 kt. Waves 2 ft. Rain.
Sat..SE winds 10 to 15 kt...becoming W 5 to 10 kt in the afternoon. Waves 1 to 2 ft. Showers likely.
Sat night..W winds 10 kt. Waves 1 ft.
Sun..W winds 10 to 15 kt. Waves 1 to 2 ft.
Mon..NW winds 5 to 10 kt. Waves 1 ft.
ANZ500 1238 Am Est Thu Jan 23 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will remain overhead, then slowly drift offshore by Friday. A low pressure system will approach on Saturday. Small craft advisories may be needed Friday night through Sunday.


7 Day Forecast for Marine Location Near Highland Beach town, MD
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location: 38.93, -76.45     debug


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 230222 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 922 PM EST Wed Jan 22 2020

SYNOPSIS. High pressure continues to maintain control of the region and will gradually transition offshore by Friday. Low pressure will approach the region from the Midwest by Friday, before slowly moving northward towards New England during the second half of the weekend. High pressure returns Sunday and lingers into early next week.

NEAR TERM /UNTIL 6 AM THURSDAY MORNING/. With high pressure still in control, winds have gone calm this evening in many spots. Some high clouds have started to filter in ahead of a system over the center of the country, but there are still a fair number of breaks in the clouds. This has allowed temperatures to drop quickly this evening. While winds will remain light through the overnight hours, the presence of intermittent high clouds and slightly higher dewpoints will hold temperatures up a few degrees compared to previous nights. Low temperatures will be in the upper teens and low 20s for most, with mid-upper 20s in the immediate urban areas, as well as along the shores of Chesapeake Bay.

SHORT TERM /6 AM THURSDAY MORNING THROUGH FRIDAY NIGHT/. High pressure will continue to move offshore throughout the day on Thursday. While conditions will remain dry, clouds will begin increasing during the afternoon, ahead of the low pressure system, set to impact the region for Friday. Temperatures across the region on Thursday continue to gently nudge higher, as weak southerly flow advects warmer air into the region.

Model guidance has come into better agreement over the last 24 hours in regards to precip timing and type. Overall, Friday looks to remain dry for the majority of the CWA. Precip will begin encroaching into the region from the southwest mid-late Friday morning. With the amount of dry air in place ahead of the system, thinking it will take some time for the atmospheric column to saturate. With that being said, looks like precip onset will begin for southwestern portions of the CWA, mainly after noontime. However, kept slight chance of PoPs in this area to better coincide with neighboring offices. If precip does in fact begin during the morning hours for the aforementioned areas, with temperatures being slightly below freezing, could see a brief period of snow/freezing rain before p-type changes to all rain by the afternoon. Overall guidance has trended downward in regards to any wintry p-types; keeping it mainly along the higher elevations of the Allegheny Front. Therefore, thinking that by the time the precip gets going, temperatures will be warm enough to support rain. This seems like the most logical scenario as the track of the low, along with limited cold air in place ahead of system doesn't necessarily favor winter p-type.

Rain will increase in intensity overnight Friday, before tapering off Saturday morning. A colder northwest flow will allow for some snow showers along and west of the Allegheny Front overnight.

LONG TERM /SATURDAY THROUGH WEDNESDAY/. A mid/upper cutoff low will move E/NE out of the Ohio Valley toward southern New England Saturday. Initially, surface low pressure will be moving from near Indianapolis to Detroit, but a second area of surface low pressure developing near central Virginia will take over and track toward southern New England. At this point, most of the forcing (low-level frontogenesis and mid/upper divergence) appear to be ahead of the low when the airmass is relatively warm, which is expected to lead to all rain Saturday east of the Appalachians. However, closer to the upper low and colder mid-level temperatures, precipitation will probably have changed to snow over the higher terrain along the Allegheny Front by daybreak Saturday. Intense lift along a mid- level trough axis could lead to enough dynamic cooling to result in a brief changeover to/burst of snow for higher elevations east of the Allegheny Front (but west of the Blue Ridge) as precipitation ends, but overall this pattern does not favor widespread significant wintry precipitation outside of the higher elevations. Latest model/ensemble trends are favoring less snow with the low itself even over the higher terrain.

The trough axis and surface low move northeast of the area which should lead to an end in precipitation for much of the area Saturday afternoon and evening. As the upper low pivots east and deep-layer northwest flow kicks in, this should lead to upslope snow showers over the Allegheny Front Saturday night into Sunday.

Breezy and cold but mainly dry conditions are expected to end the weekend and into early next week east of the mountains, but persistent northwest flow will lead to intermittent snow shower chances along and west of the Allegheny Front.

AVIATION /02Z THURSDAY THROUGH MONDAY/. VFR conditions will continue through Thursday as high pressure moves offshore. Light and variable winds are expected to continue overnight tonight.

Clouds will increase on Thursday with MVFR CIGs likely developing by Thursday night. As low pressure approaches the region on Friday MVFR CIGs/VSBYs will reduce to IFR by late Friday as heavier rain develops across the region. MVFR/IFR CIGs/VSBYs in rain continue early Sat AM. VFR CIGs return by Saturday afternoon. NW flow brings gusts 20+ kts likely late Saturday into Sunday.

MARINE. Light winds continue through tonight into tomorrow. Winds will gradually increase Friday as low pressure approaches from the west. Small Craft Advisory conditions become possible Friday night and continue into Sunday. Gusty NW winds behind the departing low are likely to exceed 20 kts at times Saturday into Sunday.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . None.

SYNOPSIS . MSS NEAR TERM . KJP SHORT TERM . MSS LONG TERM . DHOF AVIATION . MSS/DHOF MARINE . MSS/DHOF


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TPLM2 - Thomas Point, MD 2 mi60 min W 2.9 G 4.1 32°F 39°F1031.3 hPa (-0.5)27°F
APAM2 - 8575512 - Annapolis, MD 4 mi60 min 28°F 1030.1 hPa (-0.3)
CPVM2 6 mi60 min 31°F
BSLM2 - Chesapeake Bay, MD 17 mi150 min Calm 1030 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 20 mi60 min W 1.9 G 1.9 30°F 1030.7 hPa (-0.7)
FSNM2 20 mi72 min WNW 2.9 G 4.1 32°F 1029.9 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 22 mi66 min E 1.9 G 2.9 26°F 38°F1030.6 hPa
BLTM2 - 8574680 - Baltimore, MD 24 mi66 min Calm G 1.9 29°F 42°F1030.2 hPa
WASD2 - 8594900 - Washington, DC 31 mi60 min Calm G 0 31°F 41°F1031.1 hPa (-0.6)
CA2 - 8571892 - Cambridge, MD 32 mi66 min Calm G 0 29°F 38°F1030.5 hPa
SLIM2 - 8577330 - Solomons Island, MD 42 mi60 min NW 2.9 G 2.9 30°F 42°F1030.3 hPa (-0.5)

Wind History for Francis Scott Key Bridge NE Tower, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Annapolis, United States Naval Academy, MD4 mi2.1 hrsN 08.00 miFair27°F23°F85%1031 hPa
Bay Bridge Field, MD7 mi75 minno data10.00 miFair25°F21°F86%1030.5 hPa
Fort Meade / Tipton, MD20 mi72 minN 010.00 miFair21°F19°F93%1031.2 hPa
Baltimore, Baltimore-Washington International Airport, MD21 mi66 minN 010.00 miPartly Cloudy24°F19°F81%1030.3 hPa
Easton / Newman Field, MD22 mi56 minN 010.00 miFair26°F20°F79%1031.5 hPa
Camp Springs / Andrews Air Force Base, MD23 mi2.1 hrsN 010.00 miFair23°F18°F83%1031.2 hPa

Link to 5 minute data for KBWI

Wind History from BWI (wind in knots)
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Last 24hrCalmCalmCalmCalmW3W3W3CalmS4Calm3SW5NW3CalmNW3S3CalmCalmCalmCalmW3W4CalmCalm
1 day agoN3NW3NW3NW3NW4W5NW6NW9N7N6
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2 days agoNW13NW10
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N10N9N6CalmW34W3NW4NW4NW3Calm

Tide / Current Tables for Bay Ridge, Maryland
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Bay Ridge
Click for Map
Thu -- 02:55 AM EST     0.42 feet High Tide
Thu -- 06:29 AM EST     Moonrise
Thu -- 07:19 AM EST     Sunrise
Thu -- 09:03 AM EST     -0.32 feet Low Tide
Thu -- 04:06 PM EST     0.92 feet High Tide
Thu -- 04:08 PM EST     Moonset
Thu -- 05:16 PM EST     Sunset
Thu -- 11:06 PM EST     -0.05 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.20.40.40.40.20-0.1-0.3-0.3-0.3-0.10.10.40.70.90.90.90.80.60.40.20-0.1

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Thu -- 01:52 AM EST     0.00 knots Slack
Thu -- 04:10 AM EST     0.46 knots Max Flood
Thu -- 06:29 AM EST     Moonrise
Thu -- 06:37 AM EST     -0.00 knots Slack
Thu -- 07:19 AM EST     Sunrise
Thu -- 09:35 AM EST     -0.63 knots Max Ebb
Thu -- 12:13 PM EST     0.00 knots Slack
Thu -- 04:01 PM EST     1.21 knots Max Flood
Thu -- 04:07 PM EST     Moonset
Thu -- 05:15 PM EST     Sunset
Thu -- 07:32 PM EST     -0.00 knots Slack
Thu -- 10:51 PM EST     -1.09 knots Max Ebb
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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wmap_A
GEOS Local Image of Mid-Atlantic    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
Wind Forecast for Baltimore, MD/Washington (2,6,7,8)
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Ground Weather Radar Station Dover AFB, DE
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.