Tuesday, January21, 2020
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L-36.com


Marine Weather and Tides
Stevensville, 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 5:15PM Tuesday January 21, 2020 3:43 AM EST (08:43 UTC) Moonrise 4:32AMMoonset 2:22PM Illumination 15% Phase: Waning Crescent; Moon at 26 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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ANZ540 Eastern Bay- 337 Am Est Tue Jan 21 2020
Rest of the overnight..N winds 15 kt with gusts to 20 kt. Waves 1 ft.
Today..N winds 10 to 15 kt. Waves 1 ft.
Tonight..N winds 5 to 10 kt. Waves 1 ft.
Wed..N winds 5 to 10 kt. Waves 1 ft.
Wed night..NE winds 5 kt. Waves flat.
Thu..N winds around 5 kt. Waves flat.
Thu night..NE winds around 5 kt. Waves flat.
Fri..E winds 10 to 15 kt. Waves 1 ft or less. Rain likely through the night.
Sat..E winds 10 to 15 kt...becoming w. Waves 1 to 2 ft. Rain likely through the day, then a chance of showers through the night.
ANZ500 337 Am Est Tue Jan 21 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build eastward from the mississippi valley through Wednesday, then move offshore during the second half of the week. A low pressure system will approach on Saturday.


7 Day Forecast for Marine Location Near Chester, MD
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location: 38.93, -76.28     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 210837 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 337 AM EST Tue Jan 21 2020

SYNOPSIS. High pressure across the Ohio River Valley today will build eastward across the Mid Atlantic and northeast states Wednesday through Thursday. This high will weaken and retreat to the northeast Friday before a storm system moves across the Mid Atlantic and northeast states late in the week and into the weekend. This low will strengthen as it moves into the Canadian Maritimes early next week while high pressure builds to our southwest.

NEAR TERM /UNTIL 6 PM THIS EVENING/. High pressure over the Midwest will slowly build east into the Ohio and Tennessee Valleys throughout the day.

Winds remain elevated at 5-10 mph, and this is keeping temps from falling off in the Pine Barrens of New Jersey and in portions of the Lehigh Valley. If winds do become nearly calm just before sunrise, it is possible for temps to drop into the single digits or around 10, but for now will have lows through this morning in the low to mid teens in the Lehigh Valley and Pine Barrens of New Jersey. Lws will be in the single digits in the southern Poconos and far northwest New Jersey.

With high pressure in control, abundant sunshine with dry conditions. Highs will top off in the low to mid 30s throughout, and in the 20s in the southern Poconos.

SHORT TERM /6 PM THIS EVENING THROUGH 6 AM WEDNESDAY/. High pressure continues to build east tonight and will be over the Appalachians by daybreak Wednesday. Clear skies and light winds will allow for strong radiational cooling conditions, but there will also be WAA in the middle layers of the atmosphere. As a result, it will be a cold night, but not quite as cold as Monday night.

Lows will be in the teens to around 20.

LONG TERM /WEDNESDAY THROUGH MONDAY/. Quiet weather will begin the long term forecast, then unsettled weather returns for the end of the week into the weekend, then quiet weather is expected to return again early next week.

High pressure builds across the Mid Atlantic and northeast states Wednesday into Thursday. This will keep dry, quiet weather in the forecast. Temperatures will be cool and near normal for Wednesday, then warm above normal by Thursday as thicknesses increase.

The high pressure will begin to weaken and retreat to the northeast by Thursday night and Friday. The forecast remains dry through Friday, however, cloud cover will be on the increase in advance of the approaching storm system as a couple of short wave moves across the area.

The main focus of the long term forecast then turns to the storm system over the weekend. An occluding low pressure system will be lifting across the Mid-West and into the Great Lakes Friday into Friday night, while lifting a frontal system toward the Mid-Atlantic region. A secondary low is forecast to develop to our southwest across the central Appalachians Friday night, then lift to the northeast near our region Saturday, and strengthen and become the main low of the storm system. There are timing and placement differences with the development of this secondary low, and this will have an impact on the precipitation type. The GFS is faster and closer to the coast, while the ECMWF is slower and farther inland. A wintry mix is expected for areas along and north of I-78 starting Friday night and continuing through Saturday into Saturday night. Areas along the I-78 corridor may change over to all rain for a time Saturday, before changing back to snow by Saturday night. Areas farther north, especially along and north of the I-80 corridor will likely remain all snow during the event. Those areas that see all snow may end up with several inches of snow, while areas farther south could see a couple of inches along with some icing. Areas farther south of the I-78 corridor will likely remain all rain until Saturday night into Sunday as the precipitation changes to snow for many areas as colder air wraps around the low as it moves to the northeast. Any precipitation will begin to end later Sunday into Sunday night as the low pulls farther away from the area.

High pressure will build to our southwest early next week, while low pressure moves through the Canadian Maritimes. Winds will become gusty due to a tight pressure gradient between the low to our northeast and the high to our southwest, beginning later Saturday, and continuing through Monday. Dry weather will return to the forecast for Monday

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

Today . VFR/SKC. N-NW winds, backing to the NW this afternoon at 5- 10 kt. High confidence.

Tonight . VFR. Light NW winds.

Outlook .

Wednesday-Friday . VFR conditions will continue through the period. Winds will be fairly light through the period. -High confidence.

Friday night . Conditions begin to lower to MVFR the IFR overnight as precipitation moves into the area. Rain is expected across southeast Pennsylvania, central/southern New Jersey, Delaware, and eastern Maryland. A wintry mix is possible across portions of northeast Pennsylvania and northern New Jersey. Light winds become easterly overnight -Moderate confidence.

Saturday . Precipitation continues across the area with IFR conditions in place. Winds shift front easterly, to north, to northwest. -Moderate confidence.

MARINE. Sub-SCA conditions on tap with north winds around 15 kt with gusts up to 20 kt today, diminishing to 10-15 kt tonight. Seas on the ocean will be 2-4 feet and waves on DE Bay will be 1-2 feet.

OUTLOOK .

Wednesday-Thursday . Conditions expected to remain below advisory levels.

Thursday night-Friday night . Winds expected to remain below advisory levels, however, seas are expected to build above advisory levels to 5-7 feet.

Saturday . Seas remain above advisory levels, and winds are expected to increase above advisory levels as well.

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



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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CPVM2 7 mi61 min 30°F
TPLM2 - Thomas Point, MD 9 mi43 min N 19 G 20 28°F 40°F1031.3 hPa (+0.3)8°F
APAM2 - 8575512 - Annapolis, MD 11 mi55 min 28°F 1030.4 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 20 mi67 min NNE 14 G 18 27°F 39°F1031.3 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 24 mi55 min N 8.9 G 11 26°F 1031.4 hPa
FSNM2 24 mi67 min N 11 G 13
BSLM2 - Chesapeake Bay, MD 25 mi133 min NNW 2.9 1030 hPa
CA2 - 8571892 - Cambridge, MD 27 mi61 min N 8 G 9.9 28°F 39°F1030.6 hPa
BLTM2 - 8574680 - Baltimore, MD 28 mi61 min NNE 5.1 G 6 26°F 40°F1030.9 hPa
WASD2 - 8594900 - Washington, DC 39 mi55 min N 7 G 11 28°F 42°F1031.8 hPa
SLIM2 - 8577330 - Solomons Island, MD 43 mi55 min NNW 9.9 G 13 27°F 42°F1030.5 hPa
CHCM2 - 8573927 - Chesapeake City, MD 48 mi67 min N 2.9 G 5.1 23°F 39°F1031.1 hPa

Wind History for Tolchester Beach, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bay Bridge Field, MD4 mi58 minN 10 G 1810.00 miFair27°F6°F43%1030.8 hPa
Annapolis, United States Naval Academy, MD11 mi49 minN 810.00 miFair28°F10°F49%1030.9 hPa
Easton / Newman Field, MD14 mi39 minN 610.00 miFair26°F8°F49%1031.8 hPa

Link to 5 minute data for KESN

Wind History from ESN (wind in knots)
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N10N7N4N5N5N5N4N6N7N8N8N6
1 day agoSW6W3CalmS3W11W15
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2 days agoCalmCalmE4S6S6S5S6S7SE8SE7SE6S5S3SW5--SW11
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Tide / Current Tables for Kent Island Narrows, Maryland
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Kent Island Narrows
Click for Map
Tue -- 01:26 AM EST     0.63 feet High Tide
Tue -- 04:32 AM EST     Moonrise
Tue -- 07:19 AM EST     Sunrise
Tue -- 08:00 AM EST     -0.50 feet Low Tide
Tue -- 02:22 PM EST     Moonset
Tue -- 02:45 PM EST     1.34 feet High Tide
Tue -- 05:13 PM EST     Sunset
Tue -- 10:05 PM EST     -0.07 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.60.60.50.2-0-0.3-0.4-0.5-0.4-0.10.30.71.11.31.31.21.10.80.50.20-0.10

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Tue -- 12:06 AM EST     0.00 knots Slack
Tue -- 02:16 AM EST     0.37 knots Max Flood
Tue -- 04:32 AM EST     -0.00 knots Slack
Tue -- 04:33 AM EST     Moonrise
Tue -- 07:20 AM EST     Sunrise
Tue -- 07:43 AM EST     -0.66 knots Max Ebb
Tue -- 10:27 AM EST     0.00 knots Slack
Tue -- 02:19 PM EST     1.22 knots Max Flood
Tue -- 02:22 PM EST     Moonset
Tue -- 05:13 PM EST     Sunset
Tue -- 05:57 PM EST     -0.00 knots Slack
Tue -- 09:15 PM EST     -1.02 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-00.20.40.30.1-0.1-0.4-0.6-0.7-0.5-0.20.20.711.21.20.90.5-0-0.5-0.9-1-1-0.7

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 Philadelphia/Mount Holly, PA (3,6,7,8)
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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.