Sunday, August9, 2020
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Marine Weather and Tides
Calvert 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 6:15AMSunset 8:10PM Sunday August 9, 2020 7:13 AM EDT (11:13 UTC) Moonrise 10:27PMMoonset 10:49AM Illumination 71% Phase: Waning Gibbous; Moon at 20 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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ANZ533 Chesapeake Bay From North Beach To Drum Point- 437 Am Edt Sun Aug 9 2020
Rest of the overnight..SW winds 10 kt. Waves flat. Patchy fog. Vsby 1 to 3 nm.
Today..S winds 5 to 10 kt. Waves 1 ft or less.
Tonight..S 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.
Tue..S winds 5 to 10 kt. Waves 1 ft.
Tue night..S winds 5 to 10 kt. Waves 1 ft.
Wed..S winds 5 to 10 kt. Waves 1 ft. A chance of tstms. A chance of showers.
Thu..S winds 5 to 10 kt. Waves 1 ft. A chance of tstms. A chance of showers. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 437 Am Edt Sun Aug 9 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build across the waters over the next few days. A cold front will approach from the northwest next week, stalling in the area as the week progresses.


7 Day Forecast for Marine Location Near Calvert Beach, MD
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location: 38.5, -76.5     debug


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 090811 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 411 AM EDT Sun Aug 9 2020

SYNOPSIS. High pressure will be settled overhead today into Monday. A cold front will approach late Tuesday into Tuesday night and remain stalled near our area through the end of the week.

NEAR TERM /THROUGH TONIGHT/. Latest surface analysis shows surface high pressure over our area while a stationary front lingers near the easter portion of the VA/NC state line. Aloft, a shortwave trough is moving east from our area as ridging builds to our south. A few showers remain over central Virginia as cloud cover continues to decrease and fog starts to develop over the valleys.

Additional patchy fog could develop this morning, with it dissipating after sunrise. Dry conditions will persist through the morning hours with high pressure over our region. A surface trough will settle near the I-95 corridor this afternoon/evening, and with better shear and instability east of the Blue Ridge, could see a few isolated showers and thunderstorms develop near I-95 and into central VA. However with little forcing aloft, coverage is expected to be isolated. With weak steering flow and PWAT values between 1.4 and 1.8 in, isolated flooding is a concern, especially over urban/poor drainage areas.

Dry conditions expected tonight as high pressure remains in control and boundary to our south weakens. Fog could develop again late tonight.

High temperatures today will be in the upper 80s and low 90s, with heat index values in the mid to upper 90s. Lows tonight will be in the 60s and 70s.

SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/. Weak high pressure will remain in control on Monday as southerly flow settles over our region. This will be advecting moisture into our area, which could allow for the development of a few isolated showers and thunderstorms in the afternoon and evening. Development is expected to be mainly over higher elevations due to terrain circulation, with lack of a strong forcing aloft. Heat index values could reach the upper 90s over most areas across our CWA. Dry conditions are expected Monday night.

Southerly flow will continue on Tuesday ahead of an approaching front and high pressure centered over the western Atlantic. Warm and moist air advection will again allow for heat index values to reach the upper 90s, maybe a few areas in the tipple digits. Shortwave energy aloft associated with the front and diurnal heat will allow for another day of afternoon, evening and even nighttime showers and thunderstorms as the front continues to approach our area.

LONG TERM /WEDNESDAY THROUGH SATURDAY/. Guidance remains in relatively good agreement regarding the progression of weather features later this week. On Wednesday, a cold front will be approaching our region from the northwest, crossing the upper Ohio Valley. Several upper level disturbances will be located over the mid Mississippi Valley and the central Plains with another disturbance along the Carolina coast. The front will stall in the region on Thursday and remain in the same general area Friday and Saturday. Meanwhile, the upper disturbances over the mid-Mississippi Valley and Plains will make only slow eastward progress towards the Ohio Valley and Appalachians, while the direction the disturbance near the Carolina coast takes is more uncertain.

This pattern will result in gradually diminishing temperatures as clouds and shower/t-storm chances increase, with highs near 90 Wednesday dropping into the 80s late in the week. There will be a modest severe weather risk along with at least a marginal flood risk. This may be increased by moisture injected into the region by the disturbance that will be along the Carolina coast on Wednesday.

AVIATION /08Z SUNDAY THROUGH THURSDAY/. VFR conditions are observed over most terminals at this moment, with a few MVFR sites. Fog has developed over the valleys and could be an issue in the next few hours, especially over MRB and CHO. Fog will dissipate after sunrise. VFR conditions continue through the rest of today, with any restrictions related to thunderstorms this afternoon/evening. A drier pattern will remain into Monday night with less chance of any thunderstorm developing over our region. Tuesday chance of afternoon convection increases ahead of an approaching front.

Main aviation concern on Wednesday and Thursday will be thunderstorms, primarily in the afternoon and evening hours. Storm coverage will likely be higher on Thursday.

MARINE. Winds are expected to remain below Small Craft Advisory criteria into Monday night. Some convection could bring gusty winds this afternoon and evening. There will be less chance for any convection Monday into Monday night, with an increase on Tuesday afternoon and evening ahead of a front.

Main marine concern on Wednesday and Thursday will be thunderstorms, primarily in the afternoon and evening hours. Storm coverage will likely be higher on Thursday.

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

SYNOPSIS . IMR NEAR TERM . IMR SHORT TERM . IMR LONG TERM . RCM AVIATION . IMR/RCM MARINE . IMR/RCM


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44062 - Gooses Reef, MD 6 mi38 min 77°F 82°F
COVM2 - 8577018 - Cove Point LNG Pier, MD 9 mi62 min WNW 1.9 G 4.1 1020.9 hPa
SLIM2 - 8577330 - Solomons Island, MD 13 mi56 min W 4.1 G 5.1 76°F 83°F1020.4 hPa
BSLM2 - Chesapeake Bay, MD 22 mi104 min Calm 1020 hPa
CA2 - 8571892 - Cambridge, MD 23 mi56 min SSE 1 G 1.9 74°F 83°F1020.5 hPa
PPTM2 - 8578240 - Piney Point, MD 25 mi56 min WNW 4.1 G 5.1
TPLM2 - Thomas Point, MD 28 mi74 min WSW 7 G 8 76°F 82°F1021.2 hPa (+0.0)75°F
BISM2 - 8571421 - Bishops Head, MD 31 mi56 min N 2.9 G 4.1 77°F 83°F1020.4 hPa
NCDV2 31 mi62 min NNW 1.9 G 1.9 71°F 85°F1019.8 hPa
APAM2 - 8575512 - Annapolis, MD 33 mi56 min SW 1.9 G 2.9 74°F 83°F1020 hPa
CPVM2 35 mi56 min 76°F 74°F
LWTV2 - 8635750 - Lewisetta, VA 35 mi56 min NNW 2.9 G 4.1 75°F 81°F1020.5 hPa
WASD2 - 8594900 - Washington, DC 38 mi56 min W 1 G 1.9 76°F 82°F1020.5 hPa

Wind History for Cove Point LNG Pier, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St Marys County Airport, MD13 mi19 minN 00.15 miOvercast70°F69°F100%1021.3 hPa
Patuxent River, Naval Air Station, MD15 mi22 minN 07.00 miFair73°F73°F100%1020.6 hPa

Link to 5 minute data for K2W6

Wind History from 2W6 (wind in knots)
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Last 24hrCalmE3CalmCalmCalmCalmCalmCalmN3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day agoCalmCalmSE3S4SE3SE4S3SE5S4SE5S3SE4CalmCalmCalmN5E4NE3CalmCalmCalmCalmCalmCalm
2 days agoCalmCalmCalmCalmCalmN3NE3CalmCalmE6E7E3CalmCalmS6CalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Long Beach, Maryland
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Long Beach
Click for Map
Sun -- 01:15 AM EDT     0.71 feet Low Tide
Sun -- 06:15 AM EDT     Sunrise
Sun -- 06:56 AM EDT     1.37 feet High Tide
Sun -- 11:48 AM EDT     Moonset
Sun -- 01:23 PM EDT     0.41 feet Low Tide
Sun -- 07:54 PM EDT     1.45 feet High Tide
Sun -- 08:06 PM EDT     Sunset
Sun -- 11:26 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.70.70.811.21.31.41.31.10.90.70.50.40.40.60.811.21.41.41.41.31.1

Tide / Current Tables for Broomes Island, 0.4 mile south of, Maryland Current
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Broomes Island
Click for MapFlood direction 290 true
Ebb direction 110 true

Sun -- 02:05 AM EDT     0.00 knots Slack
Sun -- 04:44 AM EDT     0.28 knots Max Flood
Sun -- 06:15 AM EDT     Sunrise
Sun -- 07:46 AM EDT     -0.00 knots Slack
Sun -- 11:07 AM EDT     -0.45 knots Max Ebb
Sun -- 11:49 AM EDT     Moonset
Sun -- 02:20 PM EDT     0.00 knots Slack
Sun -- 05:25 PM EDT     0.40 knots Max Flood
Sun -- 08:06 PM EDT     Sunset
Sun -- 09:07 PM EDT     -0.00 knots Slack
Sun -- 11:26 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.3-0.2-00.10.30.30.20.1-0-0.2-0.4-0.5-0.4-0.3-0.10.10.30.40.40.30.20-0.2-0.3

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
Wind Forecast for Baltimore, MD/Washington (7,2,3,4)
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Ground Weather Radar Station Dover AFB, DE
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weather_mapweather_map weather_map

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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.