Sunday, May31, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Cecilton, 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 5:36AMSunset 8:25PM Sunday May 31, 2020 3:16 PM EDT (19:16 UTC) Moonrise 1:30PMMoonset 1:39AM 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
    EDIT      (on/off)   Help
ANZ530 Chesapeake Bay North Of Pooles Island- 150 Pm Edt Sun May 31 2020
.small craft advisory in effect through late tonight...
This afternoon..NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Tonight..N winds 10 to 15 kt. Waves 1 ft.
Mon..NW winds 5 to 10 kt. Waves 1 ft.
Mon night..W winds 5 to 10 kt. Waves 1 ft.
Tue..SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Tue night..SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Wed..W winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms through the night.
Thu..NW winds 5 kt. Waves less than 1 ft. A chance of showers and tstms in the morning. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 150 Pm Edt Sun May 31 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build over the region through Tuesday before a warm front lifts north of the waters Tuesday night. A series of cold fronts will approach from the north late in the week, potentially stalling nearby. Small craft advisories may be need for a portion of the waters Wednesday.


7 Day Forecast for Marine Location Near Cecilton, MD
   Hourly   EDIT   Help
location: 39.46, -75.87     debug


Area Discussion for - Philadelphia/Mount Holly, PA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KPHI 310748 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 348 AM EDT Sun May 31 2020

SYNOPSIS. High pressure will build into the area through Monday before sliding to the south and offshore on Tuesday. A weak trough may approach the region late in the day on Tuesday. A cold front will drop down into the region Wednesday and then stall over the Mid-Atlantic through the end of the week.

NEAR TERM /UNTIL 6 PM THIS EVENING/.

High pressure will move from Michigan this morning towards the upper Ohio Valley by tonight. This will keep fair weather across the region today. After some seasonably chilly morning lows, temperatures will rise into the mid/upper 60s N/W and low 70s elsewhere. These temps will be about 5 degree below normal. Winds will be north to northwest around 10 mph with some gusts near 20 mph.

SHORT TERM /6 PM THIS EVENING THROUGH 6 AM MONDAY/.

High pressure will continue to move slowly across the upper Ohio Valley into the Middle Atlantic region. A continuation of fair weather with mostly clear skies is expected across our region. Lows tonight will be about 5 degrees cooler than Sat night, so mercury readings will fall into the upper 30s/low 40s N/W and close to 50 for Delmarva and srn NJ. Winds will be mostly N at 5 mph or less.

LONG TERM /MONDAY THROUGH SATURDAY/. Overview: The long term will start cool and dry as a large area of high pressure builds over our region before shifting off shore. However, by Tuesday, we'll see a big shift in the overall pattern as the mid and upper level ridge which has been over the central U.S. will start building east before weakening and flattening. That will leave the Mid Atlantic with a mostly zonal pattern until next weekend, when a trough may try to dig south over the northeastern U.S. once again. At the surface, a front is expected to approach the region mid week, then stall over the Mid Atlantic through the remainder of the week.

Details:

Monday . Monday will be the most comfortable day of the week to be outside. We will still have the low humidity like what we will see today, and temperatures should be 5 to 10 degrees below normal, with highs mostly in the lower 70s. Some models do show a weak low level trough impending on the large area of high pressure which could lead to showers especially over northern NJ and E Central PA. However, I kept the forecast dry as dewpoints should still be in the 30s and 40s, and we should generally see northwesterly low and mid level flow, which means there will be very limited moisture even if the trough does develop.

Tuesday . As the surface high shifts off shore, low level southwesterly return flow develops leading to moisture advection, and setting the stage for rain chances later in the week. The southwesterly flow will also help start a warming trend, although the mid and upper level trough which will be stubbornly sticking around for one more day, will keep temperatures near normal. A shortwave trough digging on the back side of the main mid/upper level trough could be enough to result in showers, though it remains to be seen if this shortwave trough will track close enough to our region to result in rain for us. Therefore, kept the rain chances limited to 20 to 40 percent with this period.

Wednesday . At this point, Wednesday looks like the most uncomfortable day of the week. The cold front is not expected to arrive until Wednesday night, keeping our region in the prime location for moisture advection (with dew points possibly getting in to the 60s) and warm air advection for one more day. In fact, a lot of guidance has the coastal plains in the upper 80s to near 90 (significant as we have yet to have any 90 degree days at any of the climate sites in our area this year). We may not see much in the way of rain during the day on Wednesday as we likely won't have much in the way of lift until the front gets closer to our area.

Thursday through Saturday . The front that approaches our region Wedensday night is expected to stall as the mid and upper level pattern transitions to a zonal flow pattern. The extent and timing of showers and thunderstorms through this period will depend on exactly where the front stalls. For now, I have stayed close to the previous forecast, with a broad brush of slight chance to chances of showers and storms through out the period. However, it is very unlikely that this will be a washout, and if the front stalls far enough south, northern portions of our region, may not see much rain at all (with the exception of when the front initially arrives).

AVIATION /08Z SUNDAY THROUGH THURSDAY/. The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Today . VFR expected with a minimal amount of diurnal Cu. The winds will be mostly NW around 10 knots with some gusts closer to 20 knots from late morning into the afternoon.

Tonight . VFR. SKC. Light N to NW winds, locally calm.

Outlook .

Monday . VFR conditions expected. Northwest winds around 5 to 10 knots with gusts to 20 knots possible. High confidence.

Monday night and Tuesday . Mostly VFR conditions expected. However, there is a chance for brief reductions in ceiling or visibility with showers and thunderstorms during Tuesday and Tuesday night. Light winds Monday night will become southwesterly around 5 to 10 knots. Moderate confidence on most aspects of the forecast, but low confidence on the potential for showers and thunderstorms.

Wednesday through Thursday . Predominantly VFR conditions are likely. However, there is a chance for showers and thunderstorms through out the period. Westerly winds around 5 to 10 knots. Low confidence, especially with the timing of showers and thunderstorms.

MARINE. Fair weather is expected today and tonight with high pressure across the waters. A few SCA gusts are possible this morning, but overall conditions will be sub-SCA both today and tonight. Winds will be from the north/northwest today and north/northeast tonight. Seas on the ocean mostly 3 to 4 ft while across Del Bay seas will be 1-2 ft north and 2 to 3 ft south.

Outlook .

Monday through Thursday . Winds and seas should stay below SCA criteria.

Rip Currents .

A northwest wind is expected for Sunday with breaking waves around 2 feet. As a result, there is a low risk for the development of dangerous rip currents.

The wind is forecast to back toward the southwest on Monday. Breaking waves should again be around 2 feet. The low risk is expected to continue into Monday.

FIRE WEATHER. Relative humidity values could drop to 30 percent by this afternoon (especially across the coastal plains of NJ and DE), and wind gusts up to and in excess of 20 MPH are expected today. This could lead to elevated fire weather concerns.

PHI WATCHES/WARNINGS/ADVISORIES. PA . None. NJ . None. DE . None. MD . None. MARINE . None.

Synopsis . Johnson/Meola Near Term . O'Hara Short Term . O'Hara Long Term . Johnson Aviation . Johnson/O'Hara Marine . Johnson/O'Hara Fire Weather .


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHCM2 - 8573927 - Chesapeake City, MD 6 mi46 min NW 7 G 14 68°F 72°F1019.1 hPa
DELD1 - 8551762 - Delaware City, DE 17 mi46 min NNW 9.9 G 14 68°F 72°F1018.7 hPa
RDYD1 - 8551910 - Reedy Point, DE 17 mi46 min 68°F 69°F1018.4 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 26 mi46 min NW 11 G 15
SJSN4 - 8537121 - Ship John Shoal, NJ 28 mi46 min NW 15 G 17 66°F 1019.1 hPa
MRCP1 - 8540433 - Marcus Hook, PA 34 mi46 min 69°F 69°F1018.4 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 39 mi46 min NW 6 G 11 68°F 1019.1 hPa
FSNM2 39 mi58 min NW 14 G 17 68°F 1018.9 hPa
BLTM2 - 8574680 - Baltimore, MD 40 mi46 min N 4.1 G 6 69°F 67°F1018.8 hPa
CPVM2 42 mi46 min 68°F
44063 - Annapolis 46 mi28 min 67°F 68°F1 ft1018.9 hPa
APAM2 - 8575512 - Annapolis, MD 46 mi46 min 71°F 1018.8 hPa
TPLM2 - Thomas Point, MD 49 mi76 min NNW 12 G 14 67°F 68°F1020.3 hPa (-1.5)40°F

Wind History for Chesapeake City, MD
(wind in knots)    EDIT      (on/off)   Help
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
Last
24hr
N9
G14
NW11
G15
W5
G9
--
SW1
SW1
W1
NW5
G8
NW7
NW10
G14
NW7
G12
NW8
N5
G11
N4
N5
N5
G8
NE6
G12
N4
G8
NW9
G12
NW10
G13
N11
G15
N10
G18
NW10
G14
NW14
1 day
ago
S9
G12
S4
G11
S5
G11
S6
G11
SW6
G12
S4
G9
S5
S3
G6
SW5
SW4
G7
SW2
G5
N3
--
W2
W1
N2
NW6
NW8
G11
NW11
N5
G10
NW7
G10
N4
G13
NW10
G16
NW9
G12
2 days
ago
S4
G9
E10
SE3
G7
S5
G12
S2
S3
S2
G5
E3
E4
S3
S4
S4
G7
S5
G11
SW7
S5
S5
G9
S6
SW7
G11
SW7
G10
SW3
G6
SW5
G8
W7
G10
SW9
G12
SW9
G14

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Phillips Army Air Field / Aberdeen, MD16 mi78 minNW 910.00 miA Few Clouds69°F43°F40%1019.6 hPa
Wilmington, New Castle County Airport, DE21 mi25 minW 1210.00 miFair71°F39°F31%1019 hPa

Link to 5 minute data for KAPG

Wind History from APG (wind in knots)
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
Last 24hrN5N6CalmCalmCalmCalmCalmN4NW3N5NW6NW6NW5NW4CalmCalmN8N7N7NE6
G15
NW7NW10
G19
NW9N7
1 day agoS14S14S9
G19
S12S13SW6S8SW8SW7SW6W5NE3CalmNW3CalmCalmW3NW6N7N8NW7N4W6W5
2 days agoSW8S8S9S8S6--S5S6S5S5S10S9S8S8S8S8S10SW12SW12SW10SW10S12S11
G16
S11

Tide / Current Tables for Courthouse Point, Maryland
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Courthouse Point
Click for Map
Sun -- 02:38 AM EDT     Moonset
Sun -- 05:10 AM EDT     3.09 feet High Tide
Sun -- 05:38 AM EDT     Sunrise
Sun -- 11:37 AM EDT     1.07 feet Low Tide
Sun -- 02:29 PM EDT     Moonrise
Sun -- 05:18 PM EDT     3.05 feet High Tide
Sun -- 08:24 PM EDT     Sunset
Sun -- 11:58 PM EDT     0.68 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
0.91.21.82.42.93.132.62.21.71.41.11.11.31.82.32.8332.62.21.61.10.8

Tide / Current Tables for Chesapeake and Delaware Canal, Maryland/Delaware Current
   EDIT      (on/off)   Help   One Week of Data
Chesapeake and Delaware Canal
Click for Map
Sun -- 02:38 AM EDT     Moonset
Sun -- 02:45 AM EDT     1.84 knots Max Flood
Sun -- 05:12 AM EDT     -0.01 knots Slack
Sun -- 05:38 AM EDT     Sunrise
Sun -- 08:26 AM EDT     -1.87 knots Max Ebb
Sun -- 11:30 AM EDT     0.07 knots Slack
Sun -- 02:29 PM EDT     Moonrise
Sun -- 03:10 PM EDT     2.11 knots Max Flood
Sun -- 05:57 PM EDT     -0.02 knots Slack
Sun -- 08:24 PM EDT     Sunset
Sun -- 09:11 PM EDT     -2.03 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
0.61.31.71.81.50.6-1.1-1.6-1.8-1.8-1.5-0.80.81.41.92.121.4-0.3-1.4-1.8-2-1.9-1.6

Weather Map
       (on/off)   Help Weather Map
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 Philadelphia/Mount Holly, PA (15,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Dover AFB, DE
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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.