Friday, January22, 2021
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Marine Weather and Tides
Lake Shore, 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.

Sunrise 7:18AMSunset 5:16PM Friday January 22, 2021 9:04 PM EST (02:04 UTC) Moonrise 12:27PMMoonset 1:51AM Illumination 72% 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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ANZ531 Chesapeake Bay From Pooles Island To Sandy Point- 643 Pm Est Fri Jan 22 2021
.small craft advisory in effect through Saturday afternoon...
Tonight..NW winds 15 kt with gusts to 25 kt. Waves 2 ft.
Sat..NW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
Sat night..NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 to 3 ft.
Sun..NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 to 2 ft.
Sun night..S winds 5 kt. Waves less than 1 ft.
Mon..E winds 5 to 10 kt. Waves 1 ft. Rain.
Mon night..E winds 5 to 10 kt. Waves 1 ft. Rain and snow.
Tue..N winds 10 kt. Waves 1 ft. Rain and snow in the morning, then a chance of snow in the afternoon. A chance of rain through the night.
Wed..N winds 5 to 10 kt. Waves 1 ft. A chance of snow through the night.
ANZ500 643 Pm Est Fri Jan 22 2021
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A cold front will push through our region this afternoon. High pressure over the midwest will build eastward through the weekend. Low pressure may impact the region early next week. Small craft advisories will likely be needed for portions of the waters through the weekend. Small craft advisories may be needed Monday into Tuesday.


7 Day Forecast for Marine Location Near Lake Shore, MD
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location: 39.1, -76.45     debug


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 221940 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 240 PM EST Fri Jan 22 2021

SYNOPSIS.

High pressure will gradually build over the region tonight through Sunday morning, then move offshore Sunday night. Low pressure will pass through the area Tuesday. High pressure will return for Wednesday and the second half of next week.

NEAR TERM /THROUGH SUNDAY/.

Main story through the weekend will be the return to much colder temperatures and blustery conditions Saturday and Sunday. Highs Sat will be about 10 degs colder than today and when you add a biting NW wind gusting up to 30 mph, it will feel like in the teens and twenties. Still chilly on Sunday, but with less wind as center of high pressure builds closer to the area. A few snow showers will be possible across the mountains, but these will be of little significance.

SHORT TERM /SUNDAY NIGHT/.

Thickening clouds Sun night as moisture increases ahead of low pressure over the central Plains. Forcing for ascent is expected to remain weak Sun night until deeper moisture and stronger forcing overspread the area Mon with the approach of low pressure over the Midwest. Any precip through 12Z Mon should remain well west of I-81 and in the form of snow with any accumulations less than an inch.

LONG TERM /MONDAY THROUGH FRIDAY/.

High pressure off to our southeast will continue to slide further offshore early Monday as low pressure emerges out of the south- central US. Guidance has come into better agreement over the last 24 hours in regards to the track of the system. Given a negative EPO, PNA, and NAO, the pattern is more inducive of a inside tracking system (northeastward along the Appalachians) which is now being modeled by all guidance members. The question now becomes the timing of the system which will help determine p-types. As of now, precip onset looks to occur Monday morning and continue into the evening/overnight hours.

Overall, guidance has been trending downward in terms of snow accumulations and continues to trend more towards a wintry mix type of event, especially at onset until a more southerly flow at the surface scours out any cold air trapped in the BL. With a good amount of uncertainty still remaining, it appears that (at this time) areas best suited for any winter weather will be along the Mason Dixon Line and into western Maryland and the eastern Panhandle of WV.

Tuesday appears to be more of a transition day, as showers are likely to continue throughout much of the day; albeit the bulk of the precip will have ended. Canadian high pressure returns for Wednesday, resulting in dry conditions. Another low pressure system may impact the region Thursday into Friday. However, the trend is for the system to remain more towards our south. However, confidence this far out remains low and will have to continue to monitor forecast trends over the next several days. General temperature trend in the long term period looks to remain slightly below normal for this time of year.

AVIATION /19Z FRIDAY THROUGH WEDNESDAY/.

Blustery conditions Sat with NW winds gusting up to 30 knots, diminishing Sunday. Increasing clouds Sun night with any precip likely to hold off until after 12Z Monday.

CIG/VSBY restrictions are likely, especially by Monday afternoon as low pressure spreads northward across the terminals. Restrictions are likely to continue through Tuesday as the low slowly exits the region. However there's a good chance that conditions improve late Tuesday into Wednesday.

MARINE.

Strong SCA conditions Saturday with winds diminishing Sun afternoon. Gale conditions Saturday do not appear likely anymore.

SCA will be possible Monday and Tuesday as low pressure spreads eastward across the waters. SubSCA conditions possible on Wednesday.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . Small Craft Advisory until 6 PM EST Saturday for ANZ530>543.

SYNOPSIS . LFR NEAR TERM . LFR SHORT TERM . LFR LONG TERM . MSS AVIATION . MSS/LFR MARINE . MSS/LFR


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
APAM2 - 8575512 - Annapolis, MD 8 mi65 min W 9.9 G 12 40°F 41°F1013.4 hPa (+2.1)
CPVM2 8 mi65 min 41°F 22°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 9 mi65 min WNW 16 G 20 41°F 1013.5 hPa (+2.0)
FSNM2 9 mi65 min W 23 G 26 41°F 1012.9 hPa (+1.7)
BLTM2 - 8574680 - Baltimore, MD 13 mi65 min NW 5.1 G 8 41°F 42°F1013.6 hPa (+1.9)
TCBM2 - 8573364 - Tolchester Beach, MD 13 mi65 min NW 8 G 9.9 41°F 39°F1014 hPa (+2.0)
TPLM2 - Thomas Point, MD 14 mi65 min WNW 17 G 19 41°F 41°F1014.8 hPa (+2.4)18°F
BSLM2 - Chesapeake Bay, MD 26 mi95 min WNW 2.9 40°F 1013 hPa20°F
WASD2 - 8594900 - Washington, DC 34 mi65 min NW 6 G 15 41°F 40°F1015.1 hPa (+2.7)
44062 - Gooses Reef, MD 38 mi53 min NNW 9.7 G 12 42°F 42°F994.1 hPa
CA2 - 8571892 - Cambridge, MD 42 mi65 min NW 5.1 G 7 42°F 41°F1014 hPa (+3.0)
CHCM2 - 8573927 - Chesapeake City, MD 45 mi65 min W 2.9 G 4.1 39°F 38°F1013.3 hPa (+1.8)
COVM2 - 8577018 - Cove Point LNG Pier, MD 48 mi113 min NNW 11 G 12 43°F 1013.9 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, MD8 mi71 minWNW 810.00 miFair41°F20°F43%1014 hPa
Bay Bridge Field, MD11 mi70 minNW 11 G 1610.00 miFair41°F21°F45%1013.9 hPa
Baltimore, Baltimore-Washington International Airport, MD13 mi71 minN 010.00 miPartly Cloudy39°F17°F41%1013.8 hPa
Baltimore / Martin, MD17 mi71 minW 1210.00 miPartly Cloudy37°F21°F52%1014.2 hPa
Fort Meade / Tipton, MD17 mi70 minWNW 410.00 miPartly Cloudy36°F21°F56%1015.2 hPa

Link to 5 minute data for KNAK

Wind History from NAK (wind in knots)
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Last 24hrCalmNW4W6CalmCalmSW3SW3SW3CalmCalmCalmW4NW3NW5NW11
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1 day agoNW4CalmCalmCalmCalmCalmS3S5S7S8S6S11
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SW8SW7SW5W9W6W8SW94CalmNW4CalmNW4
2 days agoCalmCalmCalmCalmCalmSE3CalmNW11W5W10
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Tide / Current Tables for Mountain Point, Magothy River, Maryland
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Mountain Point
Click for Map
Fri -- 12:38 AM EST     0.45 feet High Tide
Fri -- 01:50 AM EST     Moonset
Fri -- 07:08 AM EST     -0.19 feet Low Tide
Fri -- 07:19 AM EST     Sunrise
Fri -- 12:26 PM EST     Moonrise
Fri -- 01:59 PM EST     0.65 feet High Tide
Fri -- 05:15 PM EST     Sunset
Fri -- 09:00 PM EST     0.11 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.40.40.30.1-0-0.1-0.2-0.2-0.10.10.30.50.60.60.60.50.40.30.20.10.10.10.2

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Fri -- 12:07 AM EST     0.31 knots Max Flood
Fri -- 01:50 AM EST     Moonset
Fri -- 02:24 AM EST     -0.00 knots Slack
Fri -- 05:49 AM EST     -0.61 knots Max Ebb
Fri -- 07:19 AM EST     Sunrise
Fri -- 08:46 AM EST     0.00 knots Slack
Fri -- 12:26 PM EST     Moonrise
Fri -- 12:31 PM EST     0.93 knots Max Flood
Fri -- 04:12 PM EST     -0.00 knots Slack
Fri -- 05:15 PM EST     Sunset
Fri -- 07:20 PM EST     -0.70 knots Max Ebb
Fri -- 11:02 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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0.30.30.1-0.1-0.4-0.6-0.6-0.5-0.30.10.40.70.90.90.70.40.1-0.3-0.6-0.7-0.7-0.5-0.3-0

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station




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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.