Sunday, March29, 2020
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Marine Weather and Tides
Algonquin, 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 6:51AMSunset 7:26PM Sunday March 29, 2020 3:09 PM EDT (19:09 UTC) Moonrise 8:50AMMoonset 11:32PM Illumination 31% Phase: Waxing Crescent; Moon at 6 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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ANZ541 Choptank River To Cambridge Md And The Little Choptank River- 220 Pm Edt Sun Mar 29 2020
This afternoon..S winds 5 kt. Waves less than 1 ft. A slight chance of showers and tstms. Patchy fog. Vsby 1 to 3 nm.
Tonight..W winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Mon..W winds 5 to 10 kt. Gusts up to 20 kt in the late morning and afternoon. Waves 1 ft.
Mon night..NW winds 10 kt. Waves 1 ft.
Tue..N winds 5 to 10 kt. Waves 1 ft.
Tue night..E winds 5 to 10 kt with gusts to 20 kt. Waves 1 to 2 ft. A chance of showers.
Wed..NW winds 5 to 10 kt. Waves 1 to 2 ft. A chance of rain.
Thu..NW winds 5 to 10 kt. Waves 1 to 2 ft. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 220 Pm Edt Sun Mar 29 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A warm front will try to lift northward as a warm front today before a cold front moves in from the west by tonight. High pressure will briefly build in for Monday before low pressure passes to the south Tuesday night into Wednesday. A small craft advisory may be required Tuesday night and Wednesday.


7 Day Forecast for Marine Location Near Algonquin, MD
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location: 38.59, -76.07     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 291713 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 113 PM EDT Sun Mar 29 2020

SYNOPSIS. A warm front will approach slowly from the southwest and south, and it is expected to reach northeastern Maryland, Delaware and southern New Jersey later today. Low pressure develops in or near our region late today before moving off the coast tonight. A cold front follows from the west on Monday afternoon. Weak high pressure should influence our weather on Tuesday. Low pressure passes off the North Carolina coast on Tuesday night with high pressure returning to our region for Wednesday through Friday. A cold front may approach from the west over the weekend.

NEAR TERM /UNTIL 6 PM THIS EVENING/. A large area of low pressure centered in Wisconsin with a warm front extending E/SE from this feature off the coast of Virginia. Meanwhile, high pressure located east of New England with surface ridging extending SW into NW NJ and NE PA leading to a cool air damming set up with the area stuck in low clouds along with areas of drizzle and fog north of the front.

The warm front will only lift northward very slowly today. It will likely still be stuck near southern Delmarva by early afternoon. As a result, low clouds along with areas of drizzle and fog will persist with some of this fog possibly being quite dense at times especially over Delmarva into southern NJ. Farther north, the fog should be less dense over NE PA into northern NJ but there will continue to be some periods of light rain moving through.

For this afternoon, forecast continues to be challenging but most guidance is converging on keeping the warm front over Delmarva as this will be where the triple point sets up by late day with an approaching occlusion extending north over PA and a cold front extending to the south and west. We will still have to watch for the potential for some convection forming to the west and moving eastward into the area by the latter part of the afternoon but the overall idea continues to trend towards this activity being fairly limited if it does occur as the best forcing will be located farther north and the shear will be very strong compared to the amount of instability. This may tend to shear developing updrafts apart. Still, can't rule out that some storms will get going and that these may remain surface based in the narrow warm sector over Delmarva into southern NJ. ML CAPEs still look to max out around 500-1000+ J/kg with deep layer shear of 60+ knots with this region continuing to remain in a marginal risk zone for severe storms from the SPC. Damaging winds would be the biggest threat. High temperature forecast continues to remain tricky due to the proximity of the front but no major changes were made with this update. Still expect highs stuck around 50 over NE PA into NW NJ with 70s over much of Delmarva where there may even be some sun by afternoon in the warm sector. SE PA and adjacent portions of southern NJ look to top out around 60 with clouds persisting through the day.

SHORT TERM /6 PM THIS EVENING THROUGH 6 AM MONDAY/. Any scattered showers/storms that develop described above may persist into the first part of the evening before moving out as the cold front and occlusion sweep offshore. A secondary low looks to develop at the triple point and be located SE of Cape Cod by Monday morning as the primary low weakens over Ontario. The remainder of the night should be mainly dry with variable cloud cover as the systems upper level low will be sitting over the lower Great Lakes with associated shortwave energy pivoting east around it. Expect lows mainly in the 40s to low 50s.

LONG TERM /MONDAY THROUGH SATURDAY/. Monday is forecast to be the warmest day of the week, with afternoon temperatures well into the 60s, except in the elevated terrain up north. A cold front is expected to arrive from the west in the afternoon. While there may be a few showers in eastern Pennsylvania and northern New Jersey, the boundary will have limited moisture associated with it. Temperatures are not expected to drop until Monday evening as the arrival of the cool air is anticipated to lag a few hours behind the front.

A mid level low passing from northeastern New York across New England may bring additional light rain showers on Monday night to the Pocono Region, and to parts of northern and central New Jersey.

Temperatures for the period from Tuesday through Saturday should be typical for early spring.

Weak surface high pressure is expected to influence our weather on Tuesday. The mid level low off the New England coast on Tuesday is forecast to retrograde back to the northwest on Tuesday night. A mid level trough approaching from the west is expected to pass over our region early on Wednesday. Meanwhile, a surface low is anticipated to pass across the southeastern states on Tuesday before moving off the North Carolina coast on Tuesday night.

The precipitation shield with the surface low may reach as far north as northeastern Maryland, Delaware and southern New Jersey on Tuesday night and Wednesday. Scattered light rain showers are possible in parts of eastern Pennsylvania and New Jersey at that time in association with the mid level features. Temperatures may be cold enough in the elevated terrain up north from late Tuesday night into early Wednesday morning to result in a little snow.

High pressure is expected to build into our region from the west during the period from Wednesday through Saturday. It appears as though the guidance continues to trend slower with the arrival of our next cold front. It may not get to eastern Pennsylvania, northeastern Maryland, Delaware and New Jersey until next Sunday or later.

AVIATION /17Z SUNDAY THROUGH THURSDAY/. The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

This afternoon . IFR or LIFR ceilings (MVFR/IFR visibilities at times), then some areas of improvement to low MVFR late. East- northeast winds 5-10 knots, however north to northwest around the PHL area to MIV (winds will go light and variable at some terminals). A few showers around. A few thunderstorms possible late this afternoon, especially from near PHL south and east. Low confidence on timing of any improvements and also the extent of any thunder.

Tonight . MVFR/IFR ceilings to possibly LIFR may improve and eventually go to VFR especially after 06z. MVFR/IFR visibilities may occur due to some fog. A few showers or a thunderstorm possible in the evening, mainly from around PHL south and east. Low confidence.

Monday . VFR ceilings generally between 4000-8000 feet. Light and variable winds becoming west-southwest 5-10 knots around 12z, then west-northwest 10-15 knots with gusts up to 25 knots from about 15z onward. Moderate confidence.

Outlook . Monday night . Mainly VFR. Northwest wind 5 to 10 knots. Medium confidence.

Tuesday . VFR/MVFR ceilings. North wind 5 to 10 knots becoming east. Medium confidence.

Tuesday night . VFR/MVFR ceilings with a chance of rain. East to northeast wind 5 to 10 knots. Medium confidence.

Wednesday . VFR/MVFR ceilings with a chance of rain. Northeast wind around 10 knots, becoming north. Medium confidence.

Wednesday night . Mainly VFR. Northwest wind 5 to 10 knots. Medium confidence.

Thursday . Mainly VFR. Northwest wind around 10 knots. Medium confidence.

MARINE. Marginal SCA conditions (mainly due to seas) will continue to affect the northern ocean zones through today into tonight but with the bigger issue likely being vsby restrictions. The Dense Fog Advisory was cancelled for all but the northern two ocean zones and that goes until 21z. Improvement is anticipated through tonight as a cold front moves through.

Outlook . Monday through Tuesday . No marine headlines are anticipated.

Tuesday night and Wednesday . A northeast wind gusting to 25 to 30 knots is forecast.

Wednesday night . A north to northwest wind may gust around 25 knots.

Thursday . No marine headlines are anticipated.

PHI WATCHES/WARNINGS/ADVISORIES. PA . None. NJ . None. DE . None. MD . None. MARINE . Small Craft Advisory until 6 AM EDT Monday for ANZ450>452. Dense Fog Advisory until 5 PM EDT this afternoon for ANZ450- 451.

Synopsis . Iovino Near Term . Fitzsimmons Short Term . Fitzsimmons Long Term . Iovino Aviation . Gorse/Iovino Marine . Fitzsimmons/Iovino


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CA2 - 8571892 - Cambridge, MD 1 mi51 min S 8.9 G 11 58°F 54°F1010.8 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 21 mi93 min SE 12 G 13 1010.8 hPa
BISM2 - 8571421 - Bishops Head, MD 26 mi51 min S 8.9 G 9.9 55°F 57°F1010.9 hPa
SLIM2 - 8577330 - Solomons Island, MD 27 mi51 min SE 7 G 8 52°F 53°F1010.6 hPa
TPLM2 - Thomas Point, MD 29 mi69 min S 9.9 G 12 51°F 51°F1011.5 hPa (-5.0)51°F
CPVM2 33 mi51 min 52°F
APAM2 - 8575512 - Annapolis, MD 35 mi57 min 54°F 1010.4 hPa
BSLM2 - Chesapeake Bay, MD 36 mi159 min E 5.1 1012 hPa
PPTM2 - 8578240 - Piney Point, MD 40 mi51 min SE 9.9 G 9.9
TCBM2 - 8573364 - Tolchester Beach, MD 44 mi159 min Calm G 1 50°F 51°F1014.7 hPa
LWTV2 - 8635750 - Lewisetta, VA 46 mi51 min E 11 G 13 54°F 55°F1010.8 hPa

Wind History for Cambridge, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Cambridge-Dorchester Airport, MD4 mi84 minSE 1010.00 miOvercast57°F55°F94%1010.5 hPa
Easton / Newman Field, MD15 mi79 minSE 11 G 155.00 miFog/Mist57°F55°F94%1011.2 hPa

Link to 5 minute data for KCGE

Wind History from CGE (wind in knots)
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Last 24hrCalmNE7NE5NE6NE6N3N7N6N4CalmCalmN4N6N65CalmCalmCalmCalmCalmCalmCalmSE5SE9
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1 day agoNW8N6NE7NE4CalmCalmCalmCalmCalmCalmCalmSE5SE5CalmSE5
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Tide / Current Tables for Cambridge, Choptank River, Maryland
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Cambridge
Click for Map
Sun -- 01:58 AM EDT     0.18 feet Low Tide
Sun -- 06:52 AM EDT     Sunrise
Sun -- 08:06 AM EDT     1.88 feet High Tide
Sun -- 09:49 AM EDT     Moonrise
Sun -- 02:55 PM EDT     0.36 feet Low Tide
Sun -- 07:25 PM EDT     Sunset
Sun -- 08:29 PM EDT     1.48 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.30.20.30.611.41.71.91.81.61.20.90.60.40.40.50.711.31.51.51.31

Tide / Current Tables for Cove Point (1.1 mi. NE of), Maryland Current
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Cove Point (1.1 mi. NE of)
Click for Map
Sun -- 12:52 AM EDT     -0.35 knots Max Ebb
Sun -- 03:30 AM EDT     0.00 knots Slack
Sun -- 06:53 AM EDT     0.64 knots Max Flood
Sun -- 06:54 AM EDT     Sunrise
Sun -- 09:51 AM EDT     Moonrise
Sun -- 10:32 AM EDT     -0.00 knots Slack
Sun -- 02:07 PM EDT     -0.53 knots Max Ebb
Sun -- 05:29 PM EDT     0.00 knots Slack
Sun -- 07:26 PM EDT     Sunset
Sun -- 07:36 PM EDT     0.25 knots Max Flood
Sun -- 10:11 PM EDT     -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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-0.3-0.3-0.3-0.10.10.40.60.60.60.40.1-0.1-0.3-0.5-0.5-0.5-0.3-0.10.10.20.20.20-0.1

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Philadelphia/Mount Holly, PA (15,3,4,5)
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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.