Tuesday, January28, 2020
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Marine Weather and Tides
Galesville, 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 7:14AMSunset 5:23PM Tuesday January 28, 2020 9:51 PM EST (02:51 UTC) Moonrise 9:35AMMoonset 9:03PM Illumination 17% Phase: Waxing Crescent; Moon at 4 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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ANZ532 Chesapeake Bay From Sandy Point To North Beach- 937 Pm Est Tue Jan 28 2020
Rest of tonight..NW winds 10 kt with gusts to 20 kt. Waves 1 to 2 ft.
Wed..NW winds 5 to 10 kt. Waves 1 ft.
Wed night..NE winds 5 to 10 kt. Waves 1 ft.
Thu..NE winds 5 to 10 kt. Waves 1 ft.
Thu night..NE winds around 5 kt. Waves flat.
Fri..S winds around 5 kt. Waves flat.
Fri night..E winds around 5 kt. Waves flat. A chance of rain.
Sat..NW winds 5 to 10 kt. Waves 1 ft or less. A chance of showers.
Sun..W winds 5 to 10 kt. Waves 1 ft.
ANZ500 937 Pm Est Tue Jan 28 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. Weak disturbances will pass over the area through evening. High pressure will build over the northern great lakes during the middle of the week as a cold front drops south from new england and low pressure passes well to the south near georgia.


7 Day Forecast for Marine Location Near Galesville, MD
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location: 38.85, -76.53     debug


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 290213 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 913 PM EST Tue Jan 28 2020

SYNOPSIS. Weak disturbances will pass over the area through tonight. High pressure will build over the northern Great Lakes Wednesday. Another weak disturbance will cross the region Thursday before weak high pressure returns Friday. A storm system will pass to the southeast Friday night into Saturday morning while another system will cross the area Saturday afternoon and Saturday night. High pressure will return by early next week.

NEAR TERM /THROUGH WEDNESDAY/.

The northwest flow has brought plentiful moisture across the region today, resulting in a lot of clouds, but without lift, no precip has occurred. Clouds continue to linger through this evening and has been slow to dissipate. You can see cloud cover starting to clear over central Virginia but the process has been slow. We have shift back the clear period to tomorrow morning but it could occur sooner or later. This cloud layer continues to sluggish in clearing out of our region. The weakening pressure gradient should allow winds to diminish too, so lows should get colder than last night, closer to normal (but still probably on the plus side). Lingering snow showers along the Allegany Front should finally completely shut off for the first time since Saturday night.

Weak ridging slowly builds in from the west aloft and at the surface on Wednesday, which should allow for more sunshine, though a small moisture layer will persist. Thus do not expect completely sunny skies. With more sun, but colder temps aloft, highs should not be much different than today, perhaps a smidge colder, but less wind and more sun should result in little sensible difference. It may in fact feel warmer.

SHORT TERM /WEDNESDAY NIGHT THROUGH THURSDAY NIGHT/. The disturbance currently over the high plains with a low center near Dallas will be slowly making its way eastward over the next day or so. By Wednesday night, it will be approaching our region, and should then cross the area on Thursday. The system will be weakening through this time, so while some precip may make it into our southwestern zones (Shenandoah Valley/Central VA), do not expect any precip to reach the metro. However, with relatively cold temps, what does fall will more than likely be snow, especially if it starts early in the day. Thus, a small accumulation cannot be ruled out on Thursday across our southwestern zones, but not anywhere close to advisory level. Highs will likely stay cooler with more clouds, with 30s to low 40s. Clouds will diminish Thursday night as the system pulls out, with lows in the 20s.

LONG TERM /FRIDAY THROUGH TUESDAY/. High pressure will keep conditions cool and dry Friday. A low pressure system along the Gulf Coast will move to the East Coast late Friday and Friday night. Confidence remains low at this time as to whether there will be a snow impact on us or not Friday night and Saturday. Computer models are keeping the low near or just offshore the mid-Atlantic Coast. Thus, keeping our chance of snow minimal to none. Should this low continue to track toward the northeast then offshore, a secondary low will swing in from the west and could bring a chance for rain showers or snow showers Saturday afternoon and night, along with some colder air.

The possibilities of a wintry impact range from little to no snow as the low could stay well to our southeast to some snow accumulation everywhere across the region with the higher amounts in the east. We will monitor trends in the guidance and focus on a solution as we move into mid-late week.

As for Sunday through Monday, a drier short-term pattern appears to be the possibility as high pressure moves in from the west.

A return flow develops Monday night and Tuesday; thus, ushering in milder air from the south. A chance for rain showers are possible Tuesday.

AVIATION /02Z WEDNESDAY THROUGH SUNDAY/. Cigs 4 to 6 kft will continue through the overnight for all terminals other than CHO. The cloud layer has been very slow to break up but I expect VFR conditions through the next few days. Sct clouds around the same level will linger through Wednesday. Only risk of sub- VFR is for CHO on Thursday, when a weak disturbance could bring some light rain or snow to that area. Precip from that system is not expected to reach the DC metro terminals.

VFR conditions are expected Friday through Saturday night. Should any rain or snow showers develop near the terminals and become persistent then we could encounter MVFR cigs. Winds light and variable Friday and Friday night. Winds becoming south 5 to 10 knots Saturday, then backing to the northwest 10 knots Saturday night.

MARINE. Northwest gusts to 20 knots will dwindle late this afternoon. Gradient diminishes thereafter and winds should remain sub-SCA tonight through Thursday night, switching slowly from NW to NE through that time.

Sub-SCA conditions expected Friday through Saturday night. Winds light and variable Friday through Saturday. Winds becoming 10 to 15 knots gusts up to 20 knots Saturday night.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . None.

SYNOPSIS . RCM NEAR TERM . RCM/JMG SHORT TERM . RCM LONG TERM . KLW AVIATION . RCM/KLW/JMG MARINE . RCM/KLW


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TPLM2 - Thomas Point, MD 6 mi52 min WNW 13 G 15 43°F 40°F1016.8 hPa (+1.7)24°F
APAM2 - 8575512 - Annapolis, MD 10 mi52 min 43°F 1015.3 hPa (+1.7)
BSLM2 - Chesapeake Bay, MD 11 mi142 min NW 2.9 1015 hPa
CPVM2 13 mi52 min 43°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 25 mi52 min NNW 12 G 16 43°F 1015.5 hPa (+1.8)
FSNM2 25 mi64 min NW 14 G 17 43°F 1015.2 hPa
WASD2 - 8594900 - Washington, DC 26 mi52 min WNW 5.1 G 7 43°F 40°F1016.6 hPa (+1.5)
BLTM2 - 8574680 - Baltimore, MD 29 mi52 min N 6 G 9.9 42°F1015.3 hPa (+1.7)
TCBM2 - 8573364 - Tolchester Beach, MD 29 mi52 min NNW 11 G 16 42°F1015.8 hPa (+1.8)
CA2 - 8571892 - Cambridge, MD 31 mi52 min WNW 12 G 19 41°F1015.5 hPa (+1.5)
SLIM2 - 8577330 - Solomons Island, MD 37 mi82 min NW 6 G 8.9 44°F 42°F1015.6 hPa
NCDV2 45 mi52 min NW 7 G 18 45°F1016 hPa (+1.8)
PPTM2 - 8578240 - Piney Point, MD 49 mi52 min NNW 15 G 18

Wind History for Francis Scott Key Bridge, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Annapolis, United States Naval Academy, MD9 mi2 hrsNW 7 G 1710.00 miOvercast43°F26°F51%1015.5 hPa
Bay Bridge Field, MD14 mi67 minNW 810.00 miOvercast43°F28°F57%1015.6 hPa
Camp Springs / Andrews Air Force Base, MD18 mi56 minNW 910.00 miOvercast42°F26°F54%1016.4 hPa
Fort Meade / Tipton, MD21 mi64 minWNW 410.00 miOvercast41°F28°F61%1016.6 hPa
College Park Airport, MD23 mi64 minNW 610.00 miOvercast42°F24°F50%1015.9 hPa

Link to 5 minute data for KNAK

Wind History from NAK (wind in knots)
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Last 24hrW5W5NW6NW12
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Tide / Current Tables for Galesville, West River, Maryland
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Galesville
Click for Map
Tue -- 01:54 AM EST     -0.04 feet Low Tide
Tue -- 06:56 AM EST     0.57 feet High Tide
Tue -- 07:15 AM EST     Sunrise
Tue -- 09:34 AM EST     Moonrise
Tue -- 01:12 PM EST     -0.21 feet Low Tide
Tue -- 05:22 PM EST     Sunset
Tue -- 07:34 PM EST     0.82 feet High Tide
Tue -- 09:03 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10-000.20.40.50.60.50.40.2-0-0.1-0.2-0.2-00.20.40.70.80.80.70.50.3

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Tue -- 01:32 AM EST     -0.97 knots Max Ebb
Tue -- 05:01 AM EST     0.00 knots Slack
Tue -- 07:15 AM EST     Sunrise
Tue -- 07:54 AM EST     0.69 knots Max Flood
Tue -- 09:34 AM EST     Moonrise
Tue -- 11:00 AM EST     -0.00 knots Slack
Tue -- 01:43 PM EST     -0.55 knots Max Ebb
Tue -- 04:24 PM EST     0.00 knots Slack
Tue -- 05:21 PM EST     Sunset
Tue -- 07:42 PM EST     0.77 knots Max Flood
Tue -- 09:02 PM EST     Moonset
Tue -- 10:48 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.7-0.9-0.9-0.8-0.4-00.40.60.70.60.30-0.3-0.5-0.5-0.4-0.10.20.50.70.80.60.3-0.1

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Baltimore, MD/Washington (21,6,7,8)
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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.