Friday, January17, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Galena, 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 7:19AMSunset 5:06PM Friday January 17, 2020 12:11 PM EST (17:11 UTC) Moonrise 12:02AMMoonset 11:50AM Illumination 51% Phase: Third Quarter Moon; Moon at 22 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- 1056 Am Est Fri Jan 17 2020
.small craft advisory in effect until 3 pm est this afternoon...
Rest of today..NW winds 10 to 15 kt. Gusts up to 25 kt late this morning and early afternoon. Waves 1 to 2 ft... Except flat near the mouth of the susquehanna.
Tonight..NE winds 5 to 10 kt. Waves 1 ft or less.
Sat..S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. Snow and sleet.
Sat night..SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Rain likely.
Sun..W winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
Sun night..NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Mon..NW winds 5 to 10 kt. Waves 1 ft.
Tue..N winds 5 to 10 kt. Waves 1 ft.
ANZ500 1056 Am Est Fri Jan 17 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. Arctic high pressure will build into the saint lawrence river valley today, then move east across northern new england tonight into Saturday. Low pressure developing over the central great plains will track toward the southern great lakes during this time. The low will pass to our northwest Saturday night, then exit across northern new england Sunday. Small craft advisories may be needed Saturday afternoon through Sunday.


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 171430 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 930 AM EST Fri Jan 17 2020

SYNOPSIS. Strong high pressure will progress from the Great Lakes region today to the Northeast tonight before moving offshore on Saturday. Meanwhile, developing low pressure in the central Plains will lift northeastward to New England by Sunday morning. This will bring an attendant cold front through the Mid- Atlantic on Saturday night. A strong and broad surface high will build into the eastern U.S. for most of next week.

NEAR TERM /UNTIL 6 PM THIS EVENING/. 9:30 am update: Winds remain on the strong side with gusts still reaching 25 to 30 mph at times. These should continue to weaken throughout the remainder of the morning and into the afternoon. A brief bit of respite this afternoon with no headlines before the much-discussed winter storm moves into the region. Adjusted temperatures and dew points up just a touch given current trends, otherwise the forecast is on par.

Strong high pressure located in the Great Lakes Region early this morning will build to the east today. The pressure gradient between the high and the departing area of low pressure well off Nova Scotia will maintain a brisk northwest wind in our region today. However, wind speeds are forecast to begin diminishing slowly this afternoon. Sustained wind speeds this morning are expected to be 15 to 25 mph with gusts up to 30 or 35 mph.

The northwest flow will bring cold dry air into eastern Pennsylvania, northeastern Maryland, Delaware and New Jersey. Lingering clouds and light snow showers in the Poconos, parts of the Lehigh Valley and northwestern New Jersey should dissipate this morning. We are anticipating a sunny sky for much of the day with perhaps some high clouds arriving from the west toward sunset.

Temperatures are forecast to be below normal for the first time in over a week. Highs are expected to be mainly in the lower and middle 30s, with readings not getting above the 20s in the Pocono Region and in far northern New Jersey. The high temperatures are about 6 to 8 degrees below normal for January 17.

SHORT TERM /6 PM THIS EVENING THROUGH 6 AM SATURDAY/. The center of the area of high pressure is expected to pass across southern Quebec tonight. Our weather will continue to be cold and dry. A northwest to north wind 5 to 10 mph is anticipated to become light and variable overnight.

There should be an increase in high clouds from the west tonight, out ahead of our next weather system. Some mid level clouds may arrive toward daybreak.

The thin high clouds and the light wind is expected to allow temperatures to drop into the teens and lower 20s in much of our region.

LONG TERM /SATURDAY THROUGH THURSDAY/. The medium-range period starts with a storm system moving through the region Saturday and Saturday night and ends with a long, mostly dry, and mostly cold spell.

A surface ridge will be straddling the East Coast Saturday morning as progressive midlevel ridging moves through the Northeast. Upstream, a fairly potent trough will be migrating through the central U.S., as an attendant surface low begins to lift into the Midwest. Warm advection will begin in earnest Saturday morning in advance of the trough, with clouds quickly thickening and lowering. However, residual dry air will exist in the low levels thanks to the predecessor surface ridge moving through the region. I continue to suspect models are too aggressive in saturating this very dry low- level air as stronger isentropic lift reaches the area around midday. As such, I continued the trend of lowering PoPs across the area Saturday morning (especially before 15z), with a quick ramp-up around 18z as the stronger lift reaches the area. The strongest ascent reaches the northern Mid-Atlantic during the mid-to-late afternoon, and this could result in some fairly strong columnar cooling via dynamic effects (in addition to initial wet- bulbing). However, warm advection will be considerable in advance of the trough, so expect gradual transition from snow (at onset) to rain from south to north with time (though areas north of I-78 may remain mostly snow before precipitation cessation). Model soundings are suggestive that sufficient warming aloft may occur to permit a period of sleet during the transition, with some of the higher-res guidance suggesting more of a waffling of precipitation types (owing to the competing effects of warm advection and dynamic cooling). As such, did include at least a chance of sleet, predominantly for eastern PA, during the afternoon and early evening.

Of course, snow amounts remain a tricky forecast owing to the precipitation type transition (and increasingly marginal surface temperatures). As mentioned in yesterday's discussion, a combination of pattern recognition, prior model performance, and reasonable model agreement all suggest a sub-advisory event for the I-95 corridor and southeastward. Amounts around or under an inch seem to be the most likely outcome in these areas (with mostly a rain event southeast of a Stevensville to Atlantic City to Asbury Park line). Current forecast has 1-2 inches generally for the western suburbs of Philadelphia toward the Trenton and New Brunswick areas, with 2-5 inch totals from the Reading to Morristown areas northwestward (highest amounts being in the Poconos). Confidence in snow amounts is always on the low side when precipitation type issues combine with marginal and warming low-level temperature profiles. However, additional inhibiting factors are in play: residual dry air near the surface (which may end up being stronger than progged), a fairly quick-hitting system (which will likely shut off rapidly after dark given the timing of the attendant midlevel vort max), and somewhat unfavorable timing of the maximum lift (late afternoon, plus or minus). All of this compels me to keep amounts near or below consensus (i.e., within the constraints of advisory amounts CWA- wide). Given the above (and per collaboration with surrounding offices) will go ahead and issue a winter weather advisory for the aforementioned Reading to Morristown corridor northwestward from late Saturday morning through Saturday evening, with fairly high confidence most locations in this outlined area will see advisory- level winter-weather impacts. There is still plenty of time to amend these products as needed in subsequent forecasts.

As the associated surface low lifts through New England and offshore on Sunday, northwest flow will become established with an increasing surface pressure gradient. Another breezy day should be expected, with some snow showers possible in the Poconos and vicinity. Model soundings are a little more impressive with mixing for Sunday (compared to this time yesterday), so did bump up wind gusts a little bit from the previous forecast. Anticipate gusts of 30 to 40 mph will be possible. There is also some indication of an increased chance of snow showers or even squalls as a reinforcing front moves into the area late in the day or in the early evening. Will continue to monitor this potential.

Much of next week looks dry and chilly, as a strong, broad, and cold surface high becomes established in the eastern half of the U.S. The colder look of the GFS/CMC still looks preferable to the faster moderation of the ECMWF, as larger-scale troughing in eastern North America tends to be eroded too quickly. The surface ridge will keep any meaningful precipitation chances at bay Monday through Friday.

AVIATION /15Z FRIDAY THROUGH TUESDAY/. The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Today . VFR under a mostly clear sky. A northwest wind 15 to 20 knots with gusts around 30 knots this morning should begin to slowly diminish this afternoon. High confidence.

Tonight . VFR with increasing high clouds. Northwest to north wind 5 to 10 knots becoming variable 6 knots or less. High confidence.

Outlook . Saturday and Saturday night . Rapidly deteriorating conditions expected as precipitation moves in from the west by afternoon. Precipitation will likely start as snow at the Philly terminals northwestward, with gradual transition to rain by evening at the Philly terminals. Precipitation may mix with rain at RDG/ABE before tapering off during the evening. Meanwhile, MIV/ACY may see mostly (or completely) rain. South winds increasing to 5 to 15 kt by afternoon, transitioning to southwest or west late Saturday night. LLWS probable through Saturday evening. Overall confidence is moderate (but with winds is high).

Sunday . Improvement to VFR expected as winds become west to northwest 10 to 20 kt with gusts 30+ kt. Cannot rule out snow showers (generally north/west of PHL) in the afternoon/evening. Moderate confidence.

Sunday night . VFR with northwest winds 10 to 15 kt with gusts in the evening to 25+ kt. High confidence.

Monday through Tuesday . VFR with northwest winds 5 to 15 kt (possibly with a few gusts to 20 kt or so during the daytime hours). High confidence.

MARINE. A brisk northwest wind should continue over the coastal waters of New Jersey and Delaware for today. Gale force wind gusts are expected until mid to late morning, followed by a period of Small Craft Advisory level conditions into the early evening. Wind speeds and waves heights will likely fall below Small Craft Advisory criteria for tonight.

Outlook . Saturday and Saturday night . At least advisory-level south to southwest winds are expected, with seas quickly building to 5 to 8 ft during the afternoon and evening hours. A chance of rain and visibility restrictions late in the day through the overnight hours.

Sunday . Winds will become northwest, with gusts approaching gale force. Seas should slowly subside to around 4 to 6 ft by late afternoon.

Sunday night . Lingering advisory conditions expected as northwest winds slowly diminish.

Monday . Mainly sub-advisory winds/seas expected (especially by late morning onward).

Monday night and Tuesday . Generally sub-advisory winds/seas expected, though northwest winds will approach 25 kt at times during this period.

PHI WATCHES/WARNINGS/ADVISORIES. PA . Winter Weather Advisory from 10 AM Saturday to 1 AM EST Sunday for PAZ054-055-060>062-103-105. NJ . Winter Weather Advisory from 10 AM Saturday to 1 AM EST Sunday for NJZ001-007>009. DE . None. MD . None. MARINE . Gale Warning until 10 AM EST this morning for ANZ430-431- 450>455.

Synopsis . CMS Near Term . Davis/Iovino Short Term . Iovino Long Term . CMS Aviation . CMS/Iovino Marine . CMS/Iovino


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 mi78 min 42°F
TCBM2 - 8573364 - Tolchester Beach, MD 20 mi78 min 42°F1040.3 hPa
DELD1 - 8551762 - Delaware City, DE 23 mi78 min 45°F1039.5 hPa
RDYD1 - 8551910 - Reedy Point, DE 23 mi78 min 42°F
SJSN4 - 8537121 - Ship John Shoal, NJ 30 mi72 min 44°F1039.1 hPa (+2.7)
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 33 mi78 min 1040 hPa
FSNM2 33 mi78 min NW 19 G 23 30°F 1039.4 hPa
BLTM2 - 8574680 - Baltimore, MD 35 mi78 min N 15 G 22 31°F 43°F1039.9 hPa
CPVM2 36 mi78 min 32°F
APAM2 - 8575512 - Annapolis, MD 40 mi78 min 33°F 1039.7 hPa
MRCP1 - 8540433 - Marcus Hook, PA 41 mi78 min 42°F
TPLM2 - Thomas Point, MD 42 mi72 min NNW 20 G 23 32°F 43°F1040.5 hPa (+2.1)11°F

Wind History for Chesapeake City, MD
(wind in knots)    EDIT      (on/off)   Help
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
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
Last
24hr
NW12
G17
NW14
G21
NW12
G23
NW18
G24
NW15
G22
NW16
G23
NW13
G23
NW17
G22
NW11
G19
NW13
G17
NW11
G16
NW12
G18
NW9
G16
NW12
G17
NW11
G17
NW14
G20
NW15
G19
N11
G18
NW10
G16
NW11
G15
N11
G17
N11
G21
N12
G18
N11
G22
1 day
ago
NW4
G8
NW5
N2
--
E2
SW1
E2
SE2
SE1
SE2
SE1
SE4
S3
G6
SW3
S4
S2
W2
W3
W6
G10
W4
W5
G9
NW16
G25
NW17
G21
NW10
G20
2 days
ago
E3
G6
E6
SE4
E2
NE1
NE2
--
--
--
NW2
NW2
NW2
--
W1
W1
NW1
NW2
N2
W2
W3
NW2
E1
N3
N5
G10

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 mi74 minNNW 12 G 1910.00 miFair31°F7°F37%1040.7 hPa

Link to 5 minute data for KAPG

Wind History from APG (wind in knots)
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
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
Last 24hrW15
G25
NW18
G23
NW15
G23
NW10
G18
NW10
G19
NW17
G23
NW10
G22
NW9
G16
NW10
G14
NW14
G21
NW8NW11
G16
NW6NW7NW4N6NW12
G19
NW10
G22
NW10
G20
NW10
G20
N11
G21
N9
G20
N12
G19
N14
1 day agoW5S5SE5SE4CalmCalmCalmCalmCalmCalmS5SW5SW3SW5SW7SW6W5SW5SW6W8NW7NW12
G22
NW16
G29
W20
G25
2 days agoE4E5--NE3CalmCalmCalmCalmCalmCalmCalmCalmW3W3CalmCalmW3W3CalmCalmCalmNW5--4

Tide / Current Tables for Sassafras River, Betterton, Chesapeake Bay, Maryland
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


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
Fri -- 12:02 AM EST     2.11 knots Max Flood
Fri -- 12:02 AM EST     Moonrise
Fri -- 02:51 AM EST     -0.04 knots Slack
Fri -- 06:02 AM EST     -2.02 knots Max Ebb
Fri -- 07:21 AM EST     Sunrise
Fri -- 08:00 AM EST     Last Quarter
Fri -- 09:46 AM EST     0.08 knots Slack
Fri -- 11:49 AM EST     Moonset
Fri -- 12:38 PM EST     1.98 knots Max Flood
Fri -- 03:32 PM EST     -0.08 knots Slack
Fri -- 05:05 PM EST     Sunset
Fri -- 06:23 PM EST     -1.72 knots Max Ebb
Fri -- 09:26 PM EST     0.04 knots Slack
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
2.11.91.3-0.5-1.4-1.9-2-1.9-1.5-10.61.41.921.60.9-0.8-1.4-1.7-1.7-1.3-0.70.81.4

Weather Map
       (on/off)   Help Weather Map
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 (12,3,4,5)
      (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.