Wednesday, February26, 2020
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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 6:39AMSunset 5:52PM Wednesday February 26, 2020 5:21 AM EST (10:21 UTC) Moonrise 8:26AMMoonset 8:46PM Illumination 8% Phase: Waxing Crescent; Moon at 3 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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ANZ530 Chesapeake Bay North Of Pooles Island- 336 Am Est Wed Feb 26 2020
.small craft advisory in effect from this evening through Thursday morning...
.gale warning in effect from Thursday morning through Thursday afternoon...
Rest of the overnight..NE winds 5 kt. Waves flat. Areas of dense fog. Vsby 1 nm or less.
Today..E winds 5 to 10 kt. Waves 1 ft or less. Areas of fog. Vsby 1 nm or less.
Tonight..SE winds 10 to 15 kt with gusts to 25 kt... Becoming sw 15 to 20 kt with gusts to 30 kt after midnight. Waves 1 to 2 ft. Showers with a chance of tstms. Areas of fog. Vsby 1 to 3 nm.
Thu..W winds 20 to 25 kt with gusts to 35 kt. Waves 3 ft.
Thu night..W winds 15 to 20 kt with gusts to 30 kt. Waves 2 to 3 ft.
Fri..W winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
Fri night..W winds 10 kt with gusts to 20 kt. Waves 1 ft.
Sat..NW winds 10 to 15 kt. Waves 1 to 2 ft.
Sun..W winds 5 to 10 kt...becoming ne after midnight. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 336 Am Est Wed Feb 26 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A strong low pressure system will track to our northeast today. As the low lifts to our north today, a cold front will cross our region and through our waters by this evening. The low will stall over southeastern canada through the weekend with multiple disturbances spiraling around it. High pressure will gradually build in from the central united states late this weekend into early next week. Small craft advisories will likely be needed Thursday night and into this weekend.


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


Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 260929 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 429 AM EST Wed Feb 26 2020

SYNOPSIS. An area of low pressure will rapidly deepen to our southwest and track northward to our northwest tonight, dragging a cold front across our region tonight. Breezy northwest flow will overtake the region as the surface low slowly pulls off to the north and east. High pressure will build to our south through the weekend. A minor disturbance may cross the region Saturday before quiet weather returns Sunday and Monday. By Tuesday, another area of low pressure looks to build into the Great Lakes.

NEAR TERM /UNTIL 6 PM THIS EVENING/. A frontal boundary will remain to our south through today, while broad low pressure remains to our west across the Appalachians. Cloudy conditions, along with areas of fog and drizzle will continue through the morning hours, before a slight improvement by midday become possible. There will also be a chance of light rain showers through much of the day. Temperatures through today will be above normal across the board.

A Dense Fog Advisory remains in effect for Delaware, eastern Maryland, and far southern New Jersey, and has expanded northward into Chester County, although conditions may be improving quicker across portions of southern New Jersey this morning.

SHORT TERM /6 PM THIS EVENING THROUGH 6 AM THURSDAY/. The broad low pressure to our west will become more concentrated and strengthen this evening as it moves across central Pennsylvania and into New York overnight. As it does, it will lift a warm front into the area, then bring an occluding cold front across the area as well. A triple point low will likely develop along the intersection of the warm/cold/occluded fronts during the night as well. What this spells out is we will likely have areas of fog and drizzle develop again this evening north of the lifting warm front. Then as the occluding frontal boundary and triple point low move across the area, a period of rainfall will spread across the area. A period of moderate, to occasionally heavy rainfall for some areas a PW values approach or exceed 1 inch. Rainfall amounts will be mostly 0.25-0.50 inches for most of the area, with higher amounts of 0.50-1.00 inches across portions of northeast Pennsylvania and northern New Jersey, especially along and north of the I-78 corridor.

There is some weak elevated instability forecast overnight, generally 200 J/kg or less, so as the main area of precipitation moves across the area this evening and overnight, an isolated thunderstorm or two will be possible.

As the low lifts to our north and precipitation begins to lift to the north, cold air will begin to filter in behind it. The precipitation across the higher elevations of the Poconos will likely begin changing over to snow, or a rain/snow mix by daybreak Thursday.

Also, as the front passes and the low strengthens to our north, winds will become gusty out of the west to northwest across the area, and could begin gusting 20-30 mph late in the night and through daybreak Thursday.

LONG TERM /THURSDAY THROUGH TUESDAY/. Overview . while not busy, there will be a couple features to watch in the long range forecast. It may come to no surprise that little winter weather is in the forecast yet again through the next seven days with a storm track remaining to our northwest. As forecast last week, the AO continues to remain positive, though lowering from the record high levels that were set near this time last week. Persistence will remain the name of the game this upcoming week.

Low pressure will continue to intensify and deepen as it lifts to our northwest Thursday, aided by a 160+ knot 300 mb jet oriented across the East Coast. As the 500 mb trough quickly takes on a negative tilt, rapid intensification of the surface low is forecast, with an increasing pressure gradient around the surface low. Blustery northwest winds will sweep into the area in its wake, with wind gusts potentially reaching 46 mph (40 knots). Abstained from issuing an advisory at this point with guidance not producing winds this strong yet, and given that the winds are still three periods out. Once mesoscale guidance gets a better handle on the event, we will have more confidence on where the strongest winds will be. Winds will likely be somewhat calm Thursday morning as the center of the low tracks across central Pennsylvania, then pick up as the low continues to deepen. Highs will range from the low to upper 40s across the region.

Another breezy day Friday as the trough axis sweeps across the region. No significant changes through the weekend at this point with high temperatures forecast to dip near to a few degrees below average into the upper 30s to low 40s through Sunday. A few high clouds Saturday as a weak shortwave impulse pivots through the longer synoptic trough across the Northeast. Dry weather is still expected through the weekend at this point.

Next week starts out quiet as high pressure pushes across the Southeast Monday. Global guidance pushes a weak surface low across the Great Lakes and toward our region Monday night, with precipitation beginning to move into the area Tuesday morning. Cold air will continue to be a lacking factor at play with this system. However, enough cold air may allow for a mix of rain and snow showers initially along and north of the Fall Line Tuesday before warm air pushes north and precip transitions to all rain as a warm front lifts north across the Delaware Valley. Details will still need to be ironed out, but this does not look like a promising winter storm set-up at this point. Highs in the 40s Monday will trend upward as the warm front lifts across the region Tuesday into the low to mid 50s.

AVIATION /10Z WEDNESDAY THROUGH SUNDAY/. The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Today . IFR conditions will continue through the morning hours as areas of fog and drizzle continue. Conditions are forecast to briefly improve to MVFR for a few hours this afternoon, before IFR conditions develop again late in the day. Winds remain mostly out of the northeast to east today around 5-10 knots. Moderate-High confidence.

Tonight . IFR conditions continue this evening and overnight as drizzle and fog will change to a period of rain, moderate to heavy at times. There is also a slight chance of an isolated thunderstorm, however, this chance is quite low so it's not included in the TAFS. The rain will come to and end later in the night, and a slow improvement to MVFR will likely develop once the rain ends. Winds will be easterly 5-10 knots this evening and into the overnight hours, before shifting to the southwest then west behind the cold front. The wind shift could be quite abrupt as a warm and cold front move across the area. Moderate confidence.

Outlook .

Thursday and Thursday night . Lingering MVFR CIGs possible in the morning, eventually lifting to VFR conditions. Westerly winds from 15 to 25 knots with gusts up to 40 knots at times. Winds will begin to taper off overnight with gusts dropping closer to 20 knots. Moderate confidence.

Friday-Saturday . VFR with westerly winds from 10 to 15 knots and gusts to 25 knots Friday and 20 knots Saturday. A brief period of MVFR CIGs may be possible at RDG and ABE and points north and west Saturday as a disturbance passes across the region. Moderate confidence on winds, low confidence on MVFR CIGs.

Sunday . VFR with northwesterly winds from 5 to 10 knots and gusts to 15 knots. Moderate confidence.

MARINE. Today . Conditions will remain below Small Craft Advisory levels through today. A Dense Fog Advisory will remain on a portions of the waters through the mid morning hours until conditions improve.

Tonight . Winds and waves will increase late tonight behind a cold front to 25-30 knots and 4-6 feet.

Outlook .

Thursday-Friday . Gale-force wind gusts out of the west likely Thursday and into Friday morning, especially across the Atlantic zones. A Gale Watch is remains in effect from Thursday morning through Friday evening on the ocean waters, and from Thursday morning through early Friday morning on the Delaware Bay. Seas ranging from 5 to 7 feet through this period.

Friday night-Saturday . Westerly wind gusts will drop to advisory level from 25-30 knots Friday evening. Westerly winds ease up Saturday with gusts from 15 to 20 knots. Seas from 3 to 4 feet.

Sunday . Generally sub-SCA conditions expected with westerly winds from 15 to 20 knots. Seas from 2 to 4 feet.

PHI WATCHES/WARNINGS/ADVISORIES. PA . Dense Fog Advisory until 9 AM EST this morning for PAZ101-102. NJ . Dense Fog Advisory until 9 AM EST this morning for NJZ016- 021>025. DE . Dense Fog Advisory until 9 AM EST this morning for DEZ001>004. MD . Dense Fog Advisory until 9 AM EST this morning for MDZ008-012- 015-019-020. MARINE . Dense Fog Advisory until 9 AM EST this morning for ANZ430-431- 452>455. Gale Watch from Thursday morning through Friday afternoon for ANZ450>455. Small Craft Advisory from 11 PM this evening to 6 AM EST Thursday for ANZ430-431-452>455. Small Craft Advisory from 9 PM this evening to 6 AM EST Thursday for ANZ450-451. Gale Watch from Thursday morning through late Thursday night for ANZ430-431.

Synopsis . Davis Near Term . Robertson Short Term . Robertson Long Term . Davis Aviation . Davis/Robertson Marine . Davis/Robertson


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHCM2 - 8573927 - Chesapeake City, MD 13 mi51 min E 1.9 G 2.9 46°F 42°F1011.9 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 20 mi51 min E 5.1 G 6 47°F 44°F1011.6 hPa
DELD1 - 8551762 - Delaware City, DE 23 mi51 min NE 1.9 G 1.9 45°F 48°F1011.7 hPa
RDYD1 - 8551910 - Reedy Point, DE 23 mi51 min 45°F 43°F1011.1 hPa
SJSN4 - 8537121 - Ship John Shoal, NJ 30 mi51 min NNE 4.1 G 4.1 45°F 1012.1 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 33 mi51 min ENE 5.1 G 5.1 47°F 1011.3 hPa
FSNM2 33 mi63 min NE 8 G 8 48°F 1011 hPa
BLTM2 - 8574680 - Baltimore, MD 35 mi51 min E 5.1 G 6 48°F 44°F1010.9 hPa
CPVM2 36 mi51 min 46°F
APAM2 - 8575512 - Annapolis, MD 40 mi51 min 47°F 1010.7 hPa
MRCP1 - 8540433 - Marcus Hook, PA 41 mi51 min 45°F 44°F1011.5 hPa
TPLM2 - Thomas Point, MD 42 mi81 min NE 11 G 12 46°F 43°F1012 hPa (+0.0)46°F

Wind History for Chesapeake City, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Phillips Army Air Field / Aberdeen, MD14 mi83 minENE 56.00 miFog/Mist47°F46°F99%1012.2 hPa

Link to 5 minute data for KAPG

Wind History from APG (wind in knots)
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Last 24hrCalmS3CalmSE4SE3SE3CalmCalmE3NE3NE5NE4NE3NE5CalmCalmCalmCalmCalmCalmE4NE3E5E4
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmE3S5SW6S7W3CalmSW3SW4S6S8S8S3CalmCalmCalmCalm
2 days agoCalmCalmCalmCalmCalmW6W5S8SW8S7SW8S6SW4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Betterton, Maryland
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Betterton
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Wed -- 04:56 AM EST     0.04 feet Low Tide
Wed -- 06:42 AM EST     Sunrise
Wed -- 08:26 AM EST     Moonrise
Wed -- 10:47 AM EST     1.38 feet High Tide
Wed -- 04:56 PM EST     -0.14 feet Low Tide
Wed -- 05:52 PM EST     Sunset
Wed -- 08:47 PM EST     Moonset
Wed -- 11:18 PM EST     1.50 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.41.10.70.40.100.10.40.71.11.31.41.20.90.50.2-0.1-0.1-00.20.611.31.5

Tide / Current Tables for Chesapeake and Delaware Canal, Maryland/Delaware Current
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Chesapeake and Delaware Canal
Click for Map
Wed -- 02:27 AM EST     -1.78 knots Max Ebb
Wed -- 05:43 AM EST     0.02 knots Slack
Wed -- 06:41 AM EST     Sunrise
Wed -- 08:25 AM EST     Moonrise
Wed -- 08:53 AM EST     1.98 knots Max Flood
Wed -- 11:33 AM EST     -0.01 knots Slack
Wed -- 02:43 PM EST     -1.93 knots Max Ebb
Wed -- 05:51 PM EST     Sunset
Wed -- 06:10 PM EST     0.04 knots Slack
Wed -- 08:46 PM EST     Moonset
Wed -- 09:18 PM EST     1.98 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.8-1.4-1.7-1.7-1.4-0.90.61.31.821.71-0.9-1.5-1.9-1.9-1.7-1.2-0.51.11.721.91.4

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 (5,6,7,8)
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Ground Weather Radar Station Dover AFB, DE
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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.