Monday, April6, 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 6:40AMSunset 7:36PM Monday April 6, 2020 12:42 AM EDT (04:42 UTC) Moonrise 5:00PMMoonset 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
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ANZ532 Chesapeake Bay From Sandy Point To North Beach- 1038 Pm Edt Sun Apr 5 2020
Rest of tonight..S winds 15 kt with gusts to 20 kt... Becoming sw 5 kt. Waves 1 ft. A chance of showers.
Mon..N winds 5 to 10 kt. Waves 1 ft.
Mon night..S winds around 5 kt. Waves flat. A chance of showers.
Tue..S winds 5 kt. Waves less than 1 ft. Showers likely.
Tue night..S winds 5 kt. Waves less than 1 ft. Showers likely.
Wed..W winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Wed night..NE winds 5 to 10 kt. Waves 1 ft.
Thu..S winds 5 to 10 kt...becoming nw 10 to 15 kt. Waves 1 to 2 ft. A chance of showers.
Fri..NW winds 10 to 15 kt. Waves 1 to 2 ft. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 1038 Pm Edt Sun Apr 5 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A weak and slow moving cold front will drop south across the region tonight with weak high pressure building in Monday. The front will lift north on Tuesday before dropping back south Wednesday. Another, stronger cold front will cross the region Thursday. Small craft advisory may be needed for the second half of the week.


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 060101 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 901 PM EDT Sun Apr 5 2020

SYNOPSIS. A weak and slow moving cold front will drop south across the region tonight with weak high pressure building in Monday. The front will lift north on Tuesday before dropping back south Wednesday. Another, stronger cold front will cross the region Thursday.

NEAR TERM /UNTIL 6 AM MONDAY MORNING/. Latest surface analysis places a slow moving front just northwest of our CWA with southwesterly flow observed across our region. This is helping temperatures stay mild this evening. Scattered showers continue to cross the region in advance of the front, but dry low-levels are limiting the amount of rain reachng the ground.

The front will drop south of our region later tonight and winds will become NW behind it. As the front moves across the chance of showers will be decreasing starting over the NW portion of our CWA. Low temperatures tonight will range from the mid 40s to low 50s.

SHORT TERM /6 AM MONDAY MORNING THROUGH TUESDAY NIGHT/. A front will be stalled just south of our area into Monday night while high pressure is centered over the Great Lakes, and ridging sits aloft. Dry conditions expected over our region except for maybe a few isolated showers over higher elevations near central VA. The front will lift north on Tuesday and along with shortwave energy aloft, showers and thunderstorms are expected across our region into Tuesday night.

LONG TERM /WEDNESDAY THROUGH SUNDAY/. Low pressure will push off the NY/NJ coast Wednesday, sending a cold front south back across the region. Warm nose ahead of the front will boost temps into the 70s, but instability as the front crosses the area will result in scattered showers and thunderstorms.

As shortwave energy carves out a sharper trough axis, it will be able to drive a more substantive cold front across the Northeast/Mid Atlantic Thursday afternoon-evening. This front exhibits good thermal packing, so suspect there will be a wind field to drive this advection. Once again, showers are likely.

High pressure will be building into the area Friday-Saturday.

AVIATION /01Z MONDAY THROUGH FRIDAY/. VFR conditions expected over the terminals tonight. A few showers could move over the terminals tonight with a frontal boundary moving through our region. Front will linger to our south Monday into Monday night allowing for VFR conditions. Some showers could move near CHO, closest to the front. The front will return north on Tuesday and showers and thunderstorm cold impact some of the terminals.

Flight restrictions possible Wed-Thu due to showers and possibly a few thunderstorms. These restrictions should be transitory.

MARINE. Winds are expected to expected to remain below Small Craft Advisory criteria through Tuesday night. Brief periods of gusty winds near criteria could occur this evening and overnight, and if needed a Marine Weather Statement may be issued.

Winds may not be able to mix to the waters surface Wednesday into Thursday due to how warm it will be. Momentum will be there. The best chance may come late Thursday behind a cold front.

TIDES/COASTAL FLOODING. Advisories and warnings are in effect through Monday morning. Anomalies are starting to decrease, so may be able to cancel some advisories or transition some of the warnings to advisories shortly. However, some minor flooding may continue into Monday evening, so some advisories may also need extension.

LWX WATCHES/WARNINGS/ADVISORIES. DC . Coastal Flood Advisory until noon EDT Monday for DCZ001. MD . Coastal Flood Advisory until 4 AM EDT Monday for MDZ018. Coastal Flood Advisory until 11 AM EDT Monday for MDZ508. Coastal Flood Advisory until 9 AM EDT Monday for MDZ011. Coastal Flood Warning until 7 AM EDT Monday for MDZ014. Coastal Flood Advisory until 5 AM EDT Monday for MDZ016. Coastal Flood Warning until 4 AM EDT Monday for MDZ017. VA . Coastal Flood Advisory until 5 AM EDT Monday for VAZ057. Coastal Flood Advisory until noon EDT Monday for VAZ054. WV . None. MARINE . None.

SYNOPSIS . LFR/RCM NEAR TERM . IMR/RCM SHORT TERM . IMR/RCM LONG TERM . HTS/RCM AVIATION . IMR/HTS/RCM MARINE . HTS/RCM TIDES/COASTAL FLOODING . LFR/IMR/RCM


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TPLM2 - Thomas Point, MD 6 mi43 min SSE 11 G 12 53°F 51°F1017.5 hPa (+0.0)53°F
APAM2 - 8575512 - Annapolis, MD 10 mi73 min 55°F 1016.2 hPa
BSLM2 - Chesapeake Bay, MD 11 mi133 min S 5.1 1016 hPa
CPVM2 13 mi73 min 54°F
44062 - Gooses Reef, MD 21 mi43 min S 7.8 G 7.8 53°F 1 ft
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 25 mi73 min SSE 2.9 G 2.9 57°F 1016.3 hPa
FSNM2 25 mi73 min S 2.9 G 6 57°F 1015.9 hPa
WASD2 - 8594900 - Washington, DC 26 mi73 min S 7 G 8 60°F 57°F1016.7 hPa
BLTM2 - 8574680 - Baltimore, MD 29 mi73 min SW 1 G 1.9 57°F 53°F1016 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 29 mi109 min SSW 6 G 8.9 56°F 53°F1016.8 hPa
CA2 - 8571892 - Cambridge, MD 31 mi73 min S 7 G 9.9 55°F 54°F1017.1 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 32 mi73 min SSE 5.1 G 6 1017.5 hPa
SLIM2 - 8577330 - Solomons Island, MD 37 mi73 min SSW 2.9 G 5.1 56°F 54°F1017 hPa
NCDV2 45 mi73 min NNE 1 G 1.9 56°F 56°F1016.6 hPa
PPTM2 - 8578240 - Piney Point, MD 49 mi73 min S 5.1 G 7

Wind History for Francis Scott Key Bridge NE Tower, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Annapolis, United States Naval Academy, MD9 mi49 minSE 710.00 miLight Rain54°F48°F83%1016.5 hPa
Bay Bridge Field, MD14 mi58 minS 610.00 miOvercast55°F48°F77%1016.9 hPa
Camp Springs / Andrews Air Force Base, MD18 mi47 minSSW 610.00 miMostly Cloudy56°F45°F70%1017.2 hPa
Fort Meade / Tipton, MD21 mi58 minN 010.00 miMostly Cloudy52°F48°F88%1017.3 hPa
College Park Airport, MD23 mi57 minN 010.00 miMostly Cloudy53°F46°F81%1016.6 hPa

Link to 5 minute data for KADW

Wind History from ADW (wind in knots)
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Last 24hrS5SW5SW5S4S5S7S5S5S6SW9SW6SW5SW5SW10SE5SW3W4SE4E6E3SE5S4SW5SW6
1 day agoN4N3N3N5--CalmN3N4N4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE4S4S5
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Tide / Current Tables for Shady Side, West River, Maryland
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Shady Side
Click for Map
Mon -- 03:42 AM EDT     1.16 feet High Tide
Mon -- 06:10 AM EDT     Moonset
Mon -- 06:42 AM EDT     Sunrise
Mon -- 10:34 AM EDT     -0.01 feet Low Tide
Mon -- 04:22 PM EDT     1.15 feet High Tide
Mon -- 05:59 PM EDT     Moonrise
Mon -- 07:35 PM EDT     Sunset
Mon -- 10:58 PM EDT     0.14 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.70.91.11.110.80.60.30.1000.10.40.711.11.110.80.60.40.20.1

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Mon -- 01:27 AM EDT     0.00 knots Slack
Mon -- 04:31 AM EDT     0.86 knots Max Flood
Mon -- 06:09 AM EDT     Moonset
Mon -- 06:41 AM EDT     Sunrise
Mon -- 07:35 AM EDT     -0.00 knots Slack
Mon -- 10:42 AM EDT     -0.88 knots Max Ebb
Mon -- 01:47 PM EDT     0.00 knots Slack
Mon -- 04:52 PM EDT     0.88 knots Max Flood
Mon -- 05:59 PM EDT     Moonrise
Mon -- 07:34 PM EDT     Sunset
Mon -- 07:55 PM EDT     -0.00 knots Slack
Mon -- 11:00 PM EDT     -0.91 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.6-0.20.20.60.80.80.60.3-0.2-0.6-0.8-0.9-0.7-0.30.10.50.80.90.70.4-0-0.5-0.8-0.9

Weather Map
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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 Baltimore, MD/Washington (0,6,7,8)
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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.