Sunday, July5, 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 5:45AMSunset 8:36PM Sunday July 5, 2020 4:26 AM EDT (08:26 UTC) Moonrise 8:20PMMoonset 4:58AM Illumination 100% Phase: Full Moon; Moon at 15 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- 157 Am Edt Sun Jul 5 2020
Overnight..S winds 10 kt. Waves 1 ft.
Sun..S winds 5 to 10 kt. Waves 1 ft.
Sun night..SW winds 5 to 10 kt. Waves 1 ft.
Mon..S winds 5 to 10 kt. Waves 1 ft.
Mon night..S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Tue..S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Tue night..S winds 5 to 10 kt. Waves 1 ft.
Wed..S winds 5 to 10 kt. Waves 1 to 2 ft.
Thu..SE winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 157 Am Edt Sun Jul 5 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A weak front stalled near the area will weaken tonight into Sunday. High pressure over the atlantic will control the weather pattern for the early and middle portion of next week. Low pressure will pass by to the south during this time.


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


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 050759 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 359 AM EDT Sun Jul 5 2020

SYNOPSIS. Surface high pressure will build over the Atlantic while upper- level high pressure builds toward our area through Tuesday. Cutoff low pressure will develop to the south for Wednesday and it may impact the area late in the week.

NEAR TERM /THROUGH TONIGHT/. A couple lingering showers are holding on across the area, but most locations will remain dry through the remainder of the night. Outside of these showers, clouds have mostly cleared out across the area, and winds are either light or calm. Can't rule out the formation of some fog toward daybreak, especially to the west of the Blue Ridge, where more locations have went calm. Elsewhere, haze is being reported at several airports in association with leftover particulates from fireworks trapped below the inversion. Any haze that remains through daybreak should quickly mix out after sunrise.

Yet another hot and humid day is in store today, with highs topping out in the low 90s and dewpoints holding in the upper 60s to low 70s. This will result in heat indices in the mid- upper 90s during the afternoon hours. Isolated to scattered showers and thunderstorms will form in the unstable airmass this afternoon. Model soundings show less of a subsidence inversion and slightly less dry air in the mid-levels compared to yesterday, which should lead to a bit higher areal coverage of storms today. No discernible shortwaves are evident at mid-upper levels, and the backdoor front from yesterday will be largely washed out. As a result, expect that terrain circulations (particularly along the Blue Ridge) and the bay breeze could serve as initiation points for convection today. The highest coverage of storms should be within the axis of greatest instability (1500-2500 J/kg of MLCAPE), which will arc from central Virginia toward the Fredericksburg area then up the I-95 corridor toward DC. Flow throughout the column will be weak, especially toward southern portions of the CWA, resulting in pulsey storms. Slightly higher 0-6 km shear values of 20-25 knots could promote some weak organization of storms from DC northward. The main concern today will be microbursts in association with any stronger storms that form. Although slightly less than yesterday, a fair amount of mid-level dry air will still be present, leading to high DCAPE values of 1200- 1400 J/kg across much of the area. Low-level lapse rates will also be very steep (near dry adiabatic from 0-3 km), which should promote efficient transfer of momentum downward from aloft in any stronger downdrafts that form. Flooding isn't expected to be much of an issue given the lack of any well defined surface boundaries, and the presence of mid-level dry air, which should facilitate strong cold pool production and resultant propagation of storms.

Storms should quickly die off this evening as we lose daytime heating. Areas of patchy fog may be possible, especially to the west of the Blue Ridge, where winds are more likely to go calm within sheltered valleys. Lows tonight will range from the mid 60s in the mountains to the mid-upper 70s in the urban areas.

SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/. Hot and humid conditions will continue through Monday and Tuesday, with highs both days topping out in the low-mid 90s and dewpoints holding in the lower 70s. This combination will result in heat indices maxing out in the mid 90s to near 100 each afternoon. Overnight lows will remain elevated as well, with lows ranging from the mid-upper 60s over the higher terrain, to the mid-upper 70s in downtown DC and Baltimore.

Along with the continued heat and humidity, there will again be chances for showers and thunderstorms each afternoon. The highest areal coverage of storms should be on Monday, as a weak shortwave progresses down from PA. MLCAPE values of 1500-2500 J/kg coupled with 0-6 km shear values of 20-25 knots (with even better flow of 40- 55 knots at jet level), should lead to organized multicell clusters capable of gusty winds and some possibly even some hail.

LONG TERM /WEDNESDAY THROUGH SUNDAY/. Cutoff low pressure will develop to the south while and upper- level high remains overhead for Wednesday. More hot and humid conditions are expected, and a few showers and thunderstorms are possible. However, coverage of convection will be isolated to perhaps scattered since there will be little in the way of forcing.

The cutoff upper-level low and its associated surface low will move up the Mid-Atlantic Coast for Thursday and Friday. Latest deterministic global guidance has trended farther northwest with its track, which would bring unsettled conditions to our area. However, the ensembles still show a wide range of solutions. Therefore, uncertainty remains high. If the low tracks closer to the coast or overhead, then more widespread showers and thunderstorms will occur with locally heavy rainfall. However, if the low tracks farther out to sea, then it will remain hot and humid with convection being more isolated/scattered. Will continue to monitor the forecast for this time over the next several days.

The low will eventually move off to the northeast by next weekend, but an upper-level trough will likely build overhead during this time, bringing more unsettled conditions with chances for showers and thunderstorms.

AVIATION /07Z SUNDAY THROUGH THURSDAY/. Winds have gone calm at MRB, with mostly clear skies. Will continue to monitor for the formation of fog there through the remainder of the overnight hours. Elsewhere, visibilities are slightly reduced (5 or 6 SM), as a result of leftover particulates from fireworks. These particulates should mix out shortly after sunrise, leading to increased visibility.

Prevailing VFR conditions and light winds are expected at the terminals today through Tuesday. There will be chances for afternoon thunderstorms each day, with the threat for storms quickly decreasing through the evening hours. For today, we've introduced VCTS at DCA and CHO, where coverage of storms is expected to be slightly higher. Will continue to assess the need for a VCTS at the other terminals, with BWI looking like it stands the next highest chance after CHO and DCA.

An isolated thunderstorm is possible Wednesday, but most of the time will be dry with VFR conditions. Low pressure may impact the terminals late in the week with the possibility for more widespread showers and thunderstorms. Confidence remains low at this time.

MARINE. Light southerly winds (below SCA) are expected over the waters through Tuesday. Isolated to scattered showers and thunderstorms are expected each afternoon today through Tuesday. Special Marine Warnings may be needed for any stronger storms that form.

High pressure will likely remain nearby for Wednesday, but a cutoff low may impact the waters late in the week. If the low does impact the waters, this will increase chances for showers and thunderstorms along with possible SCA conditions. Confidence remains low at this time.

TIDES/COASTAL FLOODING. A southerly flow along with a small surge in water that piled up in the southern portion of the Bay has allowed for anomalies to increase overnight. Therefore, minor flooding is expected for sensitive areas (Anne Arundel, Baltimore, and Washington DC) with the morning high tide. Minor flooding is possible at Alexandria, but confidence is too low for an advisory at this time.

The southerly flow will continue through early this week, and elevated water levels may come close to minor flooding thresholds. However, confidence is low since some of the anomalies that surged up from the south will eventually settle back to the south during this time. Also, the flow will be light. Will continue to monitor for the chances of minor tidal flooding.

LWX WATCHES/WARNINGS/ADVISORIES. DC . Coastal Flood Advisory from 6 AM to 11 AM EDT this morning for DCZ001. MD . Coastal Flood Advisory until 10 AM EDT this morning for MDZ011. Coastal Flood Advisory until 9 AM EDT this morning for MDZ014. VA . None. WV . None. MARINE . None.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TPLM2 - Thomas Point, MD 2 mi87 min S 13 G 14 77°F 81°F1015.2 hPa (+0.5)75°F
APAM2 - 8575512 - Annapolis, MD 4 mi57 min S 5.1 G 8 77°F 82°F1013.7 hPa
CPVM2 6 mi57 min 78°F
BSLM2 - Chesapeake Bay, MD 17 mi117 min S 4.1 1014 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 20 mi57 min SSW 5.1 G 6 76°F 1013.9 hPa
FSNM2 20 mi69 min SSW 4.1 G 8 75°F 1013.9 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 22 mi57 min SSW 6 G 9.9 78°F 82°F1014.2 hPa
BLTM2 - 8574680 - Baltimore, MD 24 mi57 min SW 1.9 G 4.1 76°F 80°F1013.7 hPa
44062 - Gooses Reef, MD 26 mi39 min SW 9.7 G 12 77°F 83°F
WASD2 - 8594900 - Washington, DC 31 mi57 min S 6 G 7 78°F 85°F1014.2 hPa
CA2 - 8571892 - Cambridge, MD 32 mi57 min SSE 1.9 G 2.9 74°F 84°F1014.4 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 37 mi57 min S 5.1 G 7 1014.8 hPa
SLIM2 - 8577330 - Solomons Island, MD 42 mi57 min SW 6 G 7 76°F 82°F1014.3 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 mi33 minSW 47.00 miFair76°F72°F88%1014.2 hPa
Bay Bridge Field, MD7 mi32 minSSW 57.00 miPartly Cloudy77°F75°F94%1014.2 hPa
Fort Meade / Tipton, MD20 mi32 minN 01.75 miSky Obscured68°F68°F100%1014.9 hPa
Baltimore, Baltimore-Washington International Airport, MD21 mi33 minSSW 44.00 miFog/Mist75°F72°F90%1013.8 hPa
Easton / Newman Field, MD22 mi32 minN 010.00 miFair74°F72°F95%1015.6 hPa
Camp Springs / Andrews Air Force Base, MD23 mi31 minN 08.00 miFair73°F73°F100%1014.6 hPa

Link to 5 minute data for KNAK

Wind History from NAK (wind in knots)
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Last 24hrCalmN5N5NE7NE6E4NE4SE7SE9SE5E7SE7E5SE3SE3CalmCalmCalmCalm--SW5S7S6SW4
1 day agoNW3CalmNW4NW6NW6NW6NW5NW3N3NW4SE8SE7533NW3N3CalmCalmN6CalmCalmCalmN3
2 days agoCalmCalmNW5NW6N8N8N93CalmCalm3CalmCalmSE6W4NW3CalmCalmCalmCalmNW4W3W3W3

Tide / Current Tables for Bay Ridge, Maryland
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Bay Ridge
Click for Map
Sun -- 12:44 AM EDT     Full Moon
Sun -- 05:30 AM EDT     1.57 feet High Tide
Sun -- 05:46 AM EDT     Sunrise
Sun -- 05:58 AM EDT     Moonset
Sun -- 12:51 PM EDT     0.30 feet Low Tide
Sun -- 05:39 PM EDT     0.88 feet High Tide
Sun -- 08:34 PM EDT     Sunset
Sun -- 09:20 PM EDT     Moonrise
Sun -- 11:20 PM EDT     0.21 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.50.81.21.41.61.61.41.210.70.50.30.30.40.50.70.90.90.80.60.40.30.2

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Sun -- 12:44 AM EDT     Full Moon
Sun -- 01:51 AM EDT     0.00 knots Slack
Sun -- 05:40 AM EDT     1.30 knots Max Flood
Sun -- 05:45 AM EDT     Sunrise
Sun -- 05:57 AM EDT     Moonset
Sun -- 09:11 AM EDT     -0.00 knots Slack
Sun -- 12:32 PM EDT     -1.18 knots Max Ebb
Sun -- 04:18 PM EDT     0.00 knots Slack
Sun -- 06:41 PM EDT     0.54 knots Max Flood
Sun -- 08:34 PM EDT     Sunset
Sun -- 09:15 PM EDT     -0.00 knots Slack
Sun -- 09:20 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.6-0.30.10.511.21.31.10.70.1-0.4-0.9-1.1-1.2-0.9-0.6-0.10.30.50.50.40.1-0.2-0.5

Weather Map
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wmap_A
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.
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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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Disclaimer:
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.