Sunday, April5, 2020
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Marine Weather and Tides
Edesville, 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 6:41AMSunset 7:35PM Sunday April 5, 2020 12:19 AM EDT (04:19 UTC) Moonrise 3:43PMMoonset 4:34AM Illumination 91% Phase: Waxing Gibbous; Moon at 12 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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ANZ539 Chester River To Queenstown Md- 1037 Pm Edt Sat Apr 4 2020
Rest of tonight..S winds 5 kt. Waves flat.
Sun..S winds 5 to 10 kt. Waves 1 ft.
Sun night..W winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Mon..NW winds 5 kt. Waves less than 1 ft.
Mon night..S winds 5 kt. Waves flat. A chance of showers.
Tue..SW winds 5 kt. Waves flat. Showers.
Tue night..SW winds 5 kt. Waves flat. A chance of showers.
Wed..N winds 5 to 10 kt. Waves 1 ft. A chance of showers in the morning.
Thu..S winds 5 to 10 kt...becoming nw. Waves 1 to 2 ft. Showers likely.
ANZ500 1037 Pm Edt Sat Apr 4 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. Weak high pressure will build in from the ohio valley through Sunday morning. A weak cold front will drop south across the region Sunday night with another weak high pressure building in Monday. The front will lift back north as a warm front on Tuesday. A low pressure system will approach from the midwest on Wednesday. Small craft advisory may be needed for the second half of the week.


7 Day Forecast for Marine Location Near Edesville, MD
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location: 39.11, -76.13     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 050123 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 923 PM EDT Sat Apr 4 2020

SYNOPSIS. A weak ridge of high pressure will build over the area tonight and remain into Sunday. A weak cold front will cross the area Sunday afternoon and evening. More high pressure returns for Monday. A disturbance will bring unsettled conditions for the middle the upcoming week. Another low and its fronts will arrive for Friday and remain nearby into next weekend.

NEAR TERM /UNTIL 6 AM SUNDAY MORNING/. Our area is embedded within weak flow in between the departing low pressure over the ocean and a cold front moving through the Great Lakes and Mid-West region. Weak high pressure is likely to develop just to our south, with a weak surface trough to our north. There will remain plenty of low level moisture moving across the area overnight, so there will remain periods of cloudy conditions through the overnight hours. Later in the night, a weak short wave/vorticity impulse will move across the area from the northwest withing the northwest flow aloft, so a few showers may be possible across portions of northern New Jersey and northeast Pennsylvania. Any precipitation will be light.

SHORT TERM /6 AM SUNDAY MORNING THROUGH 6 PM SUNDAY/. Overall, another fairly quiet day on tap weatherwise. A weak cold front will continue to slowly approach from the north but ahead of it the W/SW flow will result in milder temperatures. There will also continue to be a fair amount of cloud cover but there should be at least a little more sunshine compared to today. Generally expect highs in the mid 60s except upper 50s to low 50s over NE PA into NW NJ. Most of the day should be dry but by late day there could be some isolated showers moving into eastern PA ahead of the aformentioned front.

LONG TERM /SUNDAY NIGHT THROUGH SATURDAY/. Sunday night thru Monday night . A mostly dry period, especially Monday which looks like a nice day with high pressure building overhead. Isolated showers may arrive Monday night as a warm front begins to push towards the area from the Ohio valley. I put just a slight chc for a shower at this point. The milder temperatures that arrive for late this weekend will continue into next week with readings 5 to 10 degrees above normal.

Tue thru Wed . A deepening upper trough across the northern Rockies and Plains states will stir up a sfc cyclone across the Great Lakes region Tue which will head east across New England into Wed. This will bring scattered to occasional showers to the area Tue thru Wed, with the cold front expected to cross the area Wed afternoon, a few tstms are also possible since a mild and humid airmass will be in place. Highs and lows will remain generally 5 to 10 degrees above normal. Highs will be in the upper 60s to low 70s for Delmarva and low to mid 60s

Wed night and beyond . Mostly unsettled with the upper trough deepening across the Great Lakes and then swinging across the Northeast late week. Another low pressure system will spin up across Canada Thu and send a stronger cold front across the Middle Atlantic towards the end of the week. There will be some chc for showers Thu thru Sat with the greatest chc for Thu. Uncertainty builds during the end of the week with some of the models slower with the system. Temperatures will drop back to normal Fri and then remain either normal or below into next weekend. Some higher elevation snow showers are possible next weekend.

AVIATION /01Z SUNDAY THROUGH THURSDAY/. The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Tonight . Mainly VFR with light and variable winds. Rounds of CIGs in the 3500-5000 foot range are likely and more isolated pockets of MVFR are possible, though confidence is very low on coverage/timing. Best timing appears to be around daybreak, with the most likely areas affected generally around/northeast of PHL. For now, think that the potential is too low for mention in the TAF.

Sunday . Mainly VFR with CIGs generally 3500-5000 feet. Cannot rule out a period of MVFR in the morning hours, but confidence is too low for mention in the TAF. Light/variable winds in the morning becoming generally westerly or southwesterly around or below 10 kt during the afternoon.

Outlook .

Sunday night . Mainly VFR conditions. Light southwest to west winds, becoming northwest overnight. MVFR conditions possible as scattered showers move through during the night. Moderate confidence with low confidence on MVFR conditions.

Monday . VFR conditions expected. Northwest to west around 5 to 10 knots. Moderate confidence.

Tuesday . Mainly VFR conditions expected. Light southwest winds less than 10 knots. MVFR or lower conditions possible in rain showers. Moderate confidence.

Wednesday . MVFR or lower conditions possible in showers with isolated thunderstorms. Westerly winds 10 knots or less. Moderate confidence with low confidence on thunderstorms.

Thursday . MVFR or lower conditions possible in showers. Southerly winds around 5 to 10 knots. Low confidence.

MARINE. The SCA remains in effect for all of our ocean zones through the day Sunday. This is mainly for seas as the general trend has been for winds to diminish. Seas should generally be in the 5 to 8 foot range through tonight and in the 4 to 6 foot range for Sunday.

Outlook .

Sunday night . SCA conditions into the evening and early overnight before diminishing. Scattered showers early.

Monday thru Wednesday . Generally sub-SCA. Sct showers Tue night and Wed otherwise, Fair.

TIDES/COASTAL FLOODING. Low pressure centered well off the Middle Atlantic coast this afternoon will continue to move farther out to sea. The onshore wind flow along the coasts of Delaware and New Jersey will cease later this evening.

Minor flooding continues late this evening on upper portions of Barnegat Bay and in coastal sections of Sussex County in Delaware. We expect flooding to continue into the early overnight hours and have issued a coastal flood statement to address this.

Meanwhile, tidal departures have increased rapidly on Chesapeake Bay this evening, with models (as usual) vastly underestimating this, in general. Using NAM-based OFS as a guide and in coordination with WFO AKQ, have increased the forecast tidal levels for the overnight high tide. At Tolchester Beach, minor flooding is forecast (but just under advisory levels). However, this may still be underdone, and an advisory may be required pending obs farther to the south. For Claiborne, have increased the forecast to advisory-level flooding and have issued a coastal flood advisory from 1 to 6 am Sunday for tidal sections of Queen Anne's, Talbot, and Caroline Counties. It is possible a second round of minor flooding may occur Sunday afternoon for the eastern shore of Chesapeake Bay, as well.

PHI WATCHES/WARNINGS/ADVISORIES. PA . None. NJ . None. DE . None. MD . Coastal Flood Advisory from 1 AM to 6 AM EDT Sunday for MDZ015- 019-020. MARINE . Small Craft Advisory until 2 AM EDT Monday for ANZ450>455.

Synopsis . O'Hara Near Term . Fitzsimmons Short Term . Fitzsimmons Long Term . O'Hara Aviation . CMS/O'Hara Marine . Fitzsimmons/O'Hara Tides/Coastal Flooding . CMS/Iovino


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCBM2 - 8573364 - Tolchester Beach, MD 9 mi55 min SSW 2.9 G 4.1 52°F 52°F1018.4 hPa
CPVM2 16 mi49 min 52°F
APAM2 - 8575512 - Annapolis, MD 20 mi49 min 53°F 1017.7 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 22 mi49 min SE 8.9 G 9.9 53°F 1017.5 hPa
FSNM2 22 mi61 min SSE 5.1 G 8.9 53°F 1017.5 hPa
TPLM2 - Thomas Point, MD 22 mi79 min S 8 G 8.9 51°F 51°F1019.1 hPa (+1.3)50°F
BLTM2 - 8574680 - Baltimore, MD 26 mi49 min Calm G 1.9 53°F 49°F1017.7 hPa
CHCM2 - 8573927 - Chesapeake City, MD 33 mi49 min Calm G 0 49°F 51°F1018.3 hPa
CA2 - 8571892 - Cambridge, MD 37 mi49 min S 2.9 G 2.9 49°F 53°F1018.4 hPa
BSLM2 - Chesapeake Bay, MD 38 mi109 min ESE 1.9 1017 hPa
44062 - Gooses Reef, MD 41 mi31 min SSW 7.8 G 9.7 51°F 978.8 hPa
SJSN4 - 8537121 - Ship John Shoal, NJ 42 mi49 min SSW 8 G 9.9 47°F 1018.3 hPa
DELD1 - 8551762 - Delaware City, DE 43 mi49 min SSW 2.9 G 4.1 50°F 54°F1017.8 hPa
RDYD1 - 8551910 - Reedy Point, DE 43 mi49 min 49°F 51°F1017.3 hPa

Wind History for Tolchester Beach, MD
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bay Bridge Field, MD14 mi34 minS 410.00 miOvercast52°F48°F88%1018.3 hPa
Easton / Newman Field, MD21 mi15 minSE 310.00 miOvercast50°F46°F88%1019.6 hPa
Annapolis, United States Naval Academy, MD21 mi25 minSSE 410.00 miOvercast52°F45°F77%1018.1 hPa
Baltimore / Martin, MD22 mi35 minESE 410.00 miOvercast52°F50°F94%1018.3 hPa

Link to 5 minute data for KMTN

Wind History from MTN (wind in knots)
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Last 24hrNW8NW7NW7NW5NW4NW5NW6N4N3N6NW6NW9NE5NE5NE8E4SE4E3CalmCalmS4SE3S3SW3
1 day agoW10
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Tide / Current Tables for Cliffs Wharf, Chester River, Maryland
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Sun -- 12:54 AM EDT     0.00 knots Slack
Sun -- 03:48 AM EDT     0.69 knots Max Flood
Sun -- 05:34 AM EDT     Moonset
Sun -- 06:43 AM EDT     Sunrise
Sun -- 06:45 AM EDT     -0.00 knots Slack
Sun -- 09:48 AM EDT     -0.74 knots Max Ebb
Sun -- 12:45 PM EDT     0.00 knots Slack
Sun -- 04:00 PM EDT     0.88 knots Max Flood
Sun -- 04:43 PM EDT     Moonrise
Sun -- 07:10 PM EDT     -0.00 knots Slack
Sun -- 07:33 PM EDT     Sunset
Sun -- 10:18 PM EDT     -0.89 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.300.40.60.70.60.3-0.1-0.4-0.7-0.7-0.6-0.30.10.50.80.90.80.50.1-0.4-0.7-0.9-0.8

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 Philadelphia/Mount Holly, PA (0,6,7,8)
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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 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.