Saturday, November28, 2020
Privacy Policy
L-36.com

Marine Weather and Tides
Galena, 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 7:00AMSunset 4:41PM Saturday November 28, 2020 3:32 AM EST (08:32 UTC) Moonrise 3:54PMMoonset 5:11AM Illumination 96% Phase: Waxing Gibbous; Moon at 13 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- 144 Am Est Sat Nov 28 2020
.small craft advisory in effect from noon est today through this afternoon...
Overnight..NW winds 5 kt. Waves flat.
Sat..NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning and afternoon. Waves 1 ft.
Sat night..NW winds 5 to 10 kt. Waves 1 ft.
Sun..SW winds 5 kt. Waves less than 1 ft.
Sun night..SE winds 5 to 10 kt. Waves 1 ft. Rain likely.
Mon..SE winds 10 to 15 kt. Gusts up to 20 kt. Waves 2 ft. Rain.
Mon night..W winds 5 to 10 kt. Waves 1 ft.
Tue..W winds 10 to 15 kt. Waves 1 to 2 ft.
Wed..W winds 5 to 10 kt. Waves 1 ft.
ANZ500 144 Am Est Sat Nov 28 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A cold front will cross the waters by midday today. High pressure will briefly build overhead during the second half of the weekend. A strong storm system will affect the region Monday and Tuesday with gale conditions likely on Monday.


7 Day Forecast for Marine Location Near Galena, MD
   Hourly   EDIT   Help
location: 39.37, -75.93     debug


Area Discussion for - Philadelphia/Mount Holly, PA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KPHI 280803 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 303 AM EST Sat Nov 28 2020

SYNOPSIS. High pressure will build towards the area this weekend, before eventually moving offshore Sunday afternoon. A complex low pressure system will move in from the southwest on Monday and will slowly lift north of the area on Tuesday. High Pressure will then build in towards the middle of next week.

NEAR TERM /UNTIL 6 PM THIS EVENING/. A shortwave trough is moving into the Northeast early this morning, with extensive mid-to-low level clouds near and in advance of the vort max. There are some precipitation echoes in western New York and Pennsylvania in association with the larger-scale lift attendant to this perturbation. Models remain quite hesitant to bring measurable QPF to our CWA this morning when the strongest lift will move into the region. It would not surprise me if we receive a few observations of sprinkles or even a light shower (especially in the Poconos), but generally think its mention is overkill in the forecast, especially since measurable precipitation is unlikely.

The main effect from this system for our area will be winds, and even the winds will not be especially noteworthy. Model soundings and statistical guidance do suggest gusts of 20 to 25 mph during the afternoon, so have increased the winds in our forecast somewhat. Variable cloudiness is anticipated, as the lowest clouds will likely be on the decrease with cold/dry advection increasing today. However, midlevel cloudiness attendant to the trough will probably be present through at least the morning, and instability clouds are expected after stronger mixing commences.

Highs today should be slightly above seasonal averages, as the west to west-northwest winds that develop by afternoon should provide some downsloping to counter the cold advection that occurs. Basically used a statistical consensus for max temperatures, with most guidance in good agreement. Resulting values are in the mid to upper 40s in the Poconos and vicinity (where clouds may be more persistent), and 50s to around 60 elsewhere (highest in Delmarva).

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SUNDAY/. The shortwave trough will swing quickly offshore this afternoon and evening, leaving broad midlevel ridging in its wake for the eastern U.S. A surface high will barrel eastward into the Mid- Atlantic tonight, moving offshore on Sunday. Winds will diminish after sunset, and may become light and variable overnight. With clearing skies from the upstream large-scale descent, expect a good night of radiational cooling across the area. Trended low temperatures down a degree or two in most spots, especially outside of the urban corridor. If winds decouple quickly, low temperatures may be a few degrees lower than forecast, but I am a little hesitant to go much lower than guidance given that the surface high does look to move south of the area and that its timing is not overly favorable for quick evening decoupling.

Winds will be lighter on Sunday, with a transition in direction from west to south. Mostly sunny skies are expected to start the day, with perhaps a gradual increase in high cloudiness during the afternoon as the early week system begins to influence the area. Currently think maximum temperatures will be similar to those seen today.

LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/. Overview .

As mentioned in previous discussions a hemispheric pattern change is expected next week, with the overall synoptic pattern becoming characterized by a longwave trough over eastern North America, and a high amplitude ridge over the west.

In terms of specifics, a southern stream low (at present a cutoff low over the desert southwest) will constructively phase with a northern shortwave in the vicinity of the Ohio Valley/Great Lakes Sunday night into Monday. This system will become a closed low which will only slowly lift north through mid-week, with the cold core making its closest approach to our area on Tuesday. The system's surface low will pass to our west Monday into Tuesday with High Pressure then returning for the middle of the week. Another shortwave will rotate cyclonically around the western periphery of this initial low towards the middle of next week, with another area of low pressure potentially approaching our area from the south late week into next weekend.

Dailies .

Sunday night-Monday . This will be the most active period of the extended as the strengthening southern stream low makes it closest approach to our area. Rain chances will begin to increase toward daybreak Monday as warm advection aloft gets into gear, with rainfall overspreading the entire region Monday morning as the low approaches. There is a fairly robust synoptic setup for locally moderate-heavy rainfall on Monday as we will find ourselves in the left exit region of the southern- stream UL jet (although we are a bit removed of the right entrance of the northern jet, so we don't get the complimentary jet interaction), while at the low-levels intense warm air/moisture advection will occur driven by a strong LLJ (850 flow approaching 60-70kts near the coast). Guidance continues to indicate some surface-based instability present late Monday morning into Monday afternoon which yields potential for some shallow convection. Did add slight-chance thunder to the forecast to account for this, and may also need to watch for a low-topped severe threat (given the very strong wind fields aloft). QPF amounts are generally similar to the previous forecast (e.g. in the 0.75-1.5 inch range), which (if accurate) would be a good soaking but would likely not lead to many significant hydro impacts.

Beyond the rainfall potential, winds will need to be watched with this system due to the aforementioned LLJ. Per usual in these warm advective, southerly flow regimes the main question is if any of this anomalously-high momentum will mix down to the surface. For this package generally went with peak overland gusts in the 25-35kt range for Monday, but sustained winds and gusts will probably reach wind advisory criteria along and near the coast (where the LLJ is strongest and low-lvl stability lowest). On a somewhat- related note, went on the higher end of guidance for MaxTs and dewpoints on Monday, as guidance tends to underestimate the thermodynamic response in these setups.

Monday night-Tuesday . The first cold front associated this system looks to cross the area Monday evening, and the system's dry slot then moves into our area. This should result in any rainfall tapering off, with temperatures steadily cooling through the night. While steady rain and showers are generally expected to end overnight, thermodynamic profiles are supportive of drizzle, so I added mention of this to the forecast. Heading into Tuesday, we may see some light precipitation as the mid- lvl cold core approaches, but do not expect anything significant (and ptype would likely remain as rain/drizzle). It will be noticeably cooler on Tuesday with highs generally in the upper 40s. As the colder and drier air filters in late in the day, there may be a brief window of elevated winds primarily during the evening if boundary layer mixing occurs. Updated the wind forecast to reflect this.

Wednesday-Thursday . A respite from active weather is expected in this time period as the low lifts northward and high pressure builds in from the south. Wednesday will be seasonably cool with highs only in the low to mid 40s, while temps should warm up about 5 degrees on Thursday. Another low potentially approaches from the south Friday/Saturday but the track/timing of this system is still uncertain.

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

Rest of tonight . VFR with CIGs generally 4000-8000 feet. Light and variable winds. Moderate confidence.

Saturday . VFR with variable cloudiness. CIGs generally expected to be 5-10 kft. West to west-northwest winds will increase during the morning, becoming around 10-15 kt during the afternoon. Gusts to 20 kt or so possible. Moderate confidence.

Saturday night . VFR with west to northwest winds up to 10 kt in the evening becoming light and more variable during the overnight hours. High confidence.

Outlook .

Sunday-Sunday night . VFR although CIGs will likely start to gradually lower Sunday night as a storm system approaches. Winds mostly light and variable on Sunday but becoming mainly light south or southwest. Overnight, a 5 to 10 kt southeast wind should develop. High confidence.

Monday-Monday night . Sub-VFR conditions expected much of the day Monday in rain, which may be heavy at times. Conditions may turn drier overnight but lingering restrictions are possible. Southeast winds during the day could gust 25 to 35 kt, with a period of higher gusts possible especially near the coast. LLWS will also be possible, particularly at sites where wind gusts are weaker. Winds should diminish overnight. Moderate confidence.

Tuesday-Tuesday night . Mainly MVFR or VFR. Winds becoming south or southwest at 5 to 15 kt. Higher gusts possible from 21Z to 03Z. Moderate confidence.

Wednesday . VFR, with W-SW winds 10-15kts. Moderate confidence.

MARINE. West to northwest winds will increase this morning to 10 to 20 kt. Cannot rule out a gust or two to 25 kt this afternoon, but think conditions will remain predominantly sub-advisory. Winds are expected to diminish slowly tonight. Seas generally near or below 3 feet are expected through tonight.

Outlook .

Sunday . Sub-advisory winds/seas expected.

Monday . S-SE winds increase considerably Monday morning to gale force with gusts to 40-45kts on the ocean waters. Cannot rule out a brief period of storm force gusts up to 50 kts during the late afternoon or evening. Seas will also increase into the 8-12ft range. Rain expected with thunderstorms possible.

Monday night-Wednesday . SCA conditions expected for more or less the entirety of this period with SW wind gusts remaining around 25kts and seas only gradually decreasing from around 8 ft Monday night to 5-6ft on Wednesday.

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

Synopsis . Carr Near Term . CMS Short Term . CMS Long Term . Carr/Staarmann Aviation . CMS/Carr/Staarmann Marine . CMS/Carr/Staarmann


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 13 mi45 min 51°F
TCBM2 - 8573364 - Tolchester Beach, MD 20 mi51 min Calm G 1 49°F 52°F1016.2 hPa
DELD1 - 8551762 - Delaware City, DE 23 mi51 min W 1.9 G 2.9 50°F 43°F1015.3 hPa
RDYD1 - 8551910 - Reedy Point, DE 23 mi51 min 49°F 52°F1014.9 hPa
SJSN4 - 8537121 - Ship John Shoal, NJ 30 mi51 min 51°F 1016.1 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 33 mi45 min W 5.1 G 5.1 51°F 1016.1 hPa
FSNM2 33 mi51 min WNW 7 G 8.9 52°F 1015.6 hPa
BLTM2 - 8574680 - Baltimore, MD 35 mi45 min NW 1 G 1.9 50°F 54°F1015.6 hPa
CPVM2 36 mi45 min 53°F 49°F
44063 - Annapolis 39 mi33 min 5.8 G 5.8 52°F 53°F1020.7 hPa (+0.0)
APAM2 - 8575512 - Annapolis, MD 40 mi45 min 50°F 1015.7 hPa
MRCP1 - 8540433 - Marcus Hook, PA 41 mi45 min 52°F
TPLM2 - Thomas Point, MD 42 mi33 min W 5.1 G 6 53°F 54°F1016.8 hPa (+0.0)45°F

Wind History for Chesapeake City, MD
(wind in knots)    EDIT      (on/off)   Help
Last
24hr
1 day
ago
2 days
ago

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, MD14 mi35 minN 09.00 miMostly Cloudy42°F41°F99%1016.6 hPa

Link to 5 minute data for KAPG

Wind History from APG (wind in knots)
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
12
AM
1
AM
2
AM
3
AM
Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmW3CalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day agoCalmS5S10SW8SW10W6SW3SW6W5W7W5--SW3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoS6S5S3S4--S5S6SW12S12SW9S8S10S6SE6SE3S4SE3CalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Betterton, Maryland
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Betterton
Click for Map
Sat -- 02:07 AM EST     0.43 feet Low Tide
Sat -- 05:11 AM EST     Moonset
Sat -- 07:02 AM EST     Sunrise
Sat -- 07:16 AM EST     1.35 feet High Tide
Sat -- 01:17 PM EST     -0.09 feet Low Tide
Sat -- 03:54 PM EST     Moonrise
Sat -- 04:41 PM EST     Sunset
Sat -- 08:17 PM EST     2.00 feet High 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
0.80.50.40.50.711.21.31.31.10.70.40.1-0.1-00.20.61.11.51.8221.71.4

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
Sat -- 02:15 AM EST     0.01 knots Slack
Sat -- 05:11 AM EST     Moonset
Sat -- 05:12 AM EST     1.96 knots Max Flood
Sat -- 07:02 AM EST     Sunrise
Sat -- 07:50 AM EST     -0.09 knots Slack
Sat -- 11:15 AM EST     -2.15 knots Max Ebb
Sat -- 03:06 PM EST     0.03 knots Slack
Sat -- 03:52 PM EST     Moonrise
Sat -- 04:40 PM EST     Sunset
Sat -- 05:54 PM EST     2.14 knots Max Flood
Sat -- 09:20 PM EST     -0.01 knots Slack
Sat -- 11:44 PM EST     -1.56 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
-1.5-1.1-0.511.71.91.81.3-0.6-1.5-1.9-2.1-2.1-1.8-1.4-0.51.422.11.91.50.7-1-1.5

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


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. Google supplies the ads on this site. Because I do not track who you are, I cannot customize how these ads are served. They may be personalized to improve the ad experience. If you do not want personalized ads, please adjust the settings on the Google site HERE. NOTE: The best I can determine, this site is not subject to CCPA but I am doing my best to comply 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.