Saturday, December7, 2019
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Marine Weather and Tides
Highland Beach, MD

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

Sunrise 7:09AMSunset 4:45PM Saturday December 7, 2019 4:05 AM EST (09:05 UTC) Moonrise 2:22PMMoonset 2:22AM Illumination 79% Phase: Waxing Gibbous; Moon at 10 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- 338 Am Est Sat Dec 7 2019
.small craft advisory in effect until 6 am est early this morning...
Rest of the overnight..N winds 15 kt with gusts to 20 kt. Waves 2 ft.
Today..N winds 5 to 10 kt. Waves 1 to 2 ft.
Tonight..E winds 5 kt. Waves less than 1 ft.
Sun..SE winds 5 to 10 kt. Waves 1 ft.
Sun night..S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Mon..S winds 5 to 10 kt. Waves 1 ft. Rain.
Mon night..SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Rain likely.
Tue..SW winds 10 to 15 kt...becoming nw. Waves 2 ft. Showers.
Wed..NW winds 10 to 15 kt. Waves 1 ft. A chance of showers through the day.
ANZ500 338 Am Est Sat Dec 7 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build across the region through the weekend. A strong area of low pressure will then develop over the mid- mississippi valley and track northeastward toward the eastern great lakes early next week. Small craft advisories may be needed Monday night through Tuesday.


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 070259 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 959 PM EST Fri Dec 6 2019

SYNOPSIS. A cold front will cross the area this evening. High pressure will build in from the west this weekend, before a stronger area of low pressure develops over the Mid-Mississippi Valley and tracks northeastward toward the eastern Great Lakes early next week.

NEAR TERM /UNTIL 7 AM SATURDAY MORNING/.

The rain showers have moved out of our region with some mid to high level clouds remaining. A cold front located through West Virginia, Northern Virginia and Northern Maryland will progress through out region this evening. Winds will becoming northerly and skies will slowly clear. Overnight low temperatures will depend on when the skies fully clear and the winds become light. If the cloud shield moves through our region quicker than expected, the boundary layer decoupling will occur earlier allowing temperatures to cool much quicker than currently forecast. Since the cloud shield is taking awhile to fully move through our region, I have upped overnight lows slightly especially since winds may not go calm until closer to daybreak. Isolated Rain and snow showers can't be ruled out along the Allegheny frontal range due to orographic lift and a cold front move through the area. Overall no more than inch of snow is expected at the higher elevations.

SHORT TERM /7 AM SATURDAY MORNING THROUGH SUNDAY NIGHT/. A strong area of high pressure will build in from the Ohio Valley on Saturday, leading to sunny skies areawide. Temperatures will run below normal in the cool air mass behind today's cold frontal passage, with highs maxing out in the upper 30s to mid 40s.

The high will become centered overhead Saturday evening, setting the stage for an ideal radiational cooling night. With clear skies, near calm winds, and dewpoints in the upper teens to low 20s, temperatures should drop rapidly. Have adjusted temperatures down from previous forecasts to account for this radiational cooling scenario.

The high will shift offshore on Sunday, causing winds to switch around to southerly. Skies should start off sunny, but some high clouds may stream in during the late afternoon hours, well in advance of a system located over the center of the country. Highs on Sunday will run a few degrees warmer than Saturday, with max temps primarily in the 40s.

Clouds will continue to stream in Sunday Night in advance of a digging trough over the center of the country. As a push of warm advection ensues ahead of that system, showers may develop across the area late Sunday Night.

LONG TERM /MONDAY THROUGH FRIDAY/. High pressure will remain well offshore while low pressure tracks northeast into the Great Lakes Monday and then into southeastern Canada for Tuesday. A warm front will slowly pass through the area later Monday into Tuesday and the cold front associated with the low will pass through the area late Tuesday into Tuesday night. A deep southerly flow will allow for milder conditions Monday and Tuesday, although cold air damming may keep temps closer to normal Monday (north of the warm front). The deep southerly flow will also usher in copious amounts of moisture during this time. The deeper moisture combined with lift from a strengthening low-level jet and upper-level jet should provide enough moisture and lift for rain Monday. Showers are likely Monday night and Tuesday ahead of the cold front.

The cold front will likely pass through the area Tuesday evening. An upper-level trough will pass through the area behind the boundary Tuesday night, and Canadian high pressure will build overhead for Wednesday and Thursday.

There may be just enough upper-level support for some precipitation on the cold side of the boundary Tuesday night. If so, there is a potential for some snow to mix in before precipitation ends. However, confidence is very low since most of the energy is in the northern stream, and the axis of the trough remains positive to perhaps neutrally tilted. Will continue to monitor.

For Wednesday, blustery and much colder conditions are expected. There will be some snow showers along and west of the Allegheny Front, and it is not out of the question that some of those snow showers can spill east of the mountains. At this time, it appears that the westerly flow at the low-levels should keep that threat limited. Canadian high pressure will build overhead Wednesday night and Thursday, bringing dry and cold conditions. The high will move offshore late in the week, allowing for a moderating trend.

AVIATION /03Z SATURDAY THROUGH WEDNESDAY/. Mid to high level clouds are expected this evening for all terminals. Some cloud bases cloud briefly drop down near MVFR conditions especially for the MRB terminal. Any restrictions would be very brief and VFR conditions are expected. This shield of clouds should dissipate early on Saturday as a cold front progresses through our region. Winds shift from westerly and become northwesterly through the rest of the night. Periods of gusts upwards of 15 to 20 knots could be potential as the cold front moves through the area.

High pressure will build in for the weekend, bringing clear skies and light winds. The next chance for sub-VFR conditions will be late Sunday Night as lower ceilings and showers move in ahead of an approaching system located over the center of the country.

Rain and subVFR conditions are expected Monday and Tuesday ahead of a cold front. Gusty west to northwest winds are expected behind the cold front Tuesday night and Wednesday. The rain may mix with some snow before ending Tuesday night, but confidence is very low at this time.

MARINE. Small Craft Advisories are in effect for all of the waters this through Saturday morning. A surge of winds are expected to occur over the waters in the next few hours with another surge possible in the morning as the sun rises. Winds will start diminishing from north to south through Saturday morning as high pressure builds.

Light winds expected Saturday afternoon through Sunday with high pressure in control. Southerly flow may increase a bit Sunday night as the high departs, but looks to be sub-SCA at this time.

Low pressure will pass by well to the west Monday. A southerly flow will increase as a warm front moves through the waters later Monday into early Tuesday. An SCA may be needed for portions of the waters during this time. A cold front will approach from the west Tuesday before passing through Tuesday night. High pressure will approach Wednesday. An SCA will likely be needed for the waters during this time.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . Small Craft Advisory until 6 AM EST Saturday for ANZ531-532- 538>540. Small Craft Advisory until noon EST Saturday for ANZ533-534- 537-541>543. Small Craft Advisory until 2 AM EST Saturday for ANZ530-535- 536.

SYNOPSIS . KJP NEAR TERM . KJP/JMG SHORT TERM . KJP LONG TERM . BJL AVIATION . BJL/KJP/JMG MARINE . BJL/KJP/JMG


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TPLM2 - Thomas Point, MD 2 mi65 min NW 16 G 17 42°F 46°F1025.7 hPa (+2.8)24°F
44063 - Annapolis 2 mi29 min N 12 G 14 40°F 46°F1025.9 hPa
APAM2 - 8575512 - Annapolis, MD 4 mi47 min 41°F 1024.8 hPa
CPVM2 6 mi47 min 42°F 33°F
BSLM2 - Chesapeake Bay, MD 17 mi155 min NNW 8 45°F 1023 hPa29°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 20 mi47 min NNW 13 G 15 40°F 1025.4 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 22 mi53 min NNW 17 G 19 41°F 43°F1025.5 hPa
BLTM2 - 8574680 - Baltimore, MD 24 mi53 min N 6 G 8 40°F 49°F1025.1 hPa
44062 - Gooses Reef, MD 26 mi29 min N 19 G 21 43°F 1025.6 hPa
WASD2 - 8594900 - Washington, DC 31 mi47 min N 6 G 9.9 41°F 44°F1025.9 hPa
CA2 - 8571892 - Cambridge, MD 32 mi53 min NNW 19 G 22 44°F 44°F1024.2 hPa
SLIM2 - 8577330 - Solomons Island, MD 42 mi47 min N 9.9 G 13 44°F 48°F1024.4 hPa

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 mi71 minNNW 910.00 miFair42°F26°F53%1025.1 hPa
Bay Bridge Field, MD7 mi70 minN 1010.00 miFair41°F24°F53%1025.1 hPa
Fort Meade / Tipton, MD20 mi71 minNNW 410.00 miFair34°F24°F70%1026.1 hPa
Baltimore, Baltimore-Washington International Airport, MD21 mi71 minNW 610.00 miFair38°F21°F52%1025.1 hPa
Camp Springs / Andrews Air Force Base, MD23 mi69 minNNW 1010.00 miFair38°F21°F51%1025.5 hPa

Link to 5 minute data for KBWI

Wind History from BWI (wind in knots)
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2 days agoW5W3SW4CalmSW3W8SW5S4SW8SW8S5CalmW3W4W10
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Tide / Current Tables for Bay Ridge, Maryland
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Bay Ridge
Click for Map
Sat -- 12:22 AM EST     0.73 feet High Tide
Sat -- 02:22 AM EST     Moonset
Sat -- 06:58 AM EST     -0.02 feet Low Tide
Sat -- 07:10 AM EST     Sunrise
Sat -- 01:25 PM EST     0.79 feet High Tide
Sat -- 02:22 PM EST     Moonrise
Sat -- 04:43 PM EST     Sunset
Sat -- 07:50 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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0.70.70.60.50.30.10-000.20.40.60.70.80.80.70.60.40.30.20.20.20.40.5

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Sat -- 01:23 AM EST     0.47 knots Max Flood
Sat -- 02:22 AM EST     Moonset
Sat -- 03:59 AM EST     -0.00 knots Slack
Sat -- 07:10 AM EST     Sunrise
Sat -- 07:19 AM EST     -0.71 knots Max Ebb
Sat -- 10:21 AM EST     0.00 knots Slack
Sat -- 01:52 PM EST     0.93 knots Max Flood
Sat -- 02:21 PM EST     Moonrise
Sat -- 04:42 PM EST     Sunset
Sat -- 05:22 PM EST     -0.00 knots Slack
Sat -- 08:25 PM EST     -0.73 knots Max Ebb
Sat -- 11:47 PM EST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.50.40.3-0-0.3-0.6-0.7-0.7-0.5-0.10.30.60.90.90.80.50.1-0.2-0.6-0.7-0.7-0.5-0.2

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 (4,6,7,8)
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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 numerious 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.