Tuesday, July14, 2020
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Marine Weather and Tides
California, 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 5:53AMSunset 8:33PM Tuesday July 14, 2020 1:35 PM EDT (17:35 UTC) Moonrise 12:26AMMoonset 1:57PM Illumination 31% Phase: Waning Crescent; Moon at 24 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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ANZ542 Patuxent River To Broomes Island Md- 1037 Am Edt Tue Jul 14 2020
Rest of today..N winds 5 kt. Waves less than 1 ft.
Tonight..W winds around 5 kt. Waves 1 ft.
Wed..E winds around 5 kt. Waves 1 ft.
Wed night..SE winds 5 to 10 kt. Waves 1 ft.
Thu..SE winds 10 to 15 kt. Waves 1 ft.
Thu night..S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Fri..S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Sat..S winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 1037 Am Edt Tue Jul 14 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will then build across the area through Wednesday before moving offshore. A front may approach from the north late in the week. A small craft advisory may be needed for portions of the waters late Thursday.


7 Day Forecast for Marine Location Near California CDP, MD
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location: 38.33, -76.51     debug


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 141430 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 1030 AM EDT Tue Jul 14 2020

SYNOPSIS. High pressure will build across the area through Wednesday before moving offshore. A front may approach from the north late in the week, before returning back north over the weekend.

NEAR TERM /UNTIL 6 PM THIS EVENING/. High pressure will expand eastward today from the Great Lakes/Ohio Valley in the wake of a departing upper low over New England. 12z IAD sounding shows a subsidence inversion around 600 hPa, with ample mid-level dry air in place. Some CAMs try to produce a few showers over the southern Shenandoah Valley this afternoon where minimal instability will remain, but think that the combination of the subsidence inversion, mid-level dry air, and limited instability/low-level moisture will inhibit the formation of showers. Have maintained the previous dry forecast for now. Slight cool advection may result in temperatures maxing out a degree or two lower than yesterday, though still looking at mid 80s to around 90. Humidity will be pleasant for this time of year with dew points in the mid 50s to lower 60s.

SHORT TERM /6 PM THIS EVENING THROUGH THURSDAY NIGHT/. The high will be positioned to the north tonight with dry, pleasant weather continuing. Some patchy fog could develop in the mountain valleys. Lows will be in the 60s to around 70.

The surface high will move toward New England on Wednesday while a ridge axis moves overhead. Return flow will begin, resulting in high temperatures inching up into the upper 80s and lower 90s. It's possible enough moisture may return to the southwestern part of the CWA that a shower could spark over the mountains; however, the subsidence inversion looks stout, so will keep a dry forecast for now. With onshore surface flow, clouds may try to develop Wednesday night, especially for the DC/Balt metro. Otherwise, expecting milder lows in the upper 60s to lower 70s.

The aforementioned clouds could persist into Thursday, and if they do, could have an effect on high temperatures -- keeping some areas in the 80s. However, more sun is expected west of the Blue Ridge where the wind should have more of a southerly component. Deeper moisture will begin to advect in, and there may be some height falls by afternoon. Thus expecting the highest chance of thunderstorms near and west of I-81. Shear may approach 30 kt, especially northwestern areas, so a few strong storms could be possible. Some showers could linger into the night depending on upstream coverage and if there is enough synoptic/shortwave forcing to support them.

LONG TERM /FRIDAY THROUGH MONDAY/. A cold front will move southeastward Friday and Friday night. Showers and thunderstorm could develop along this front, mainly across our southern zones. Temperatures ahead of and along the front will reach the lower 90s, while temperatures reach the middle to upper 80s behind the front and across the northern half of our region.

Weak high pressure should nose in from the northwest Saturday and Saturday night. As light to moderate northerly winds becoming more southeasterly Saturday afternoon, showers and a thunderstorm could form in the Potomac Highlands or along the Blue Ridge Mountains. Temperatures will be in the lower 90s.

Weak high pressure should remain in control Sunday and Sunday night. Most areas could be rain-free. A pop-up thunderstorm in the Potomac Highlands Sunday afternoon could venture eastward into northern and central Virginia. Also, a bay breeze or sea breeze thunderstorm could develop over eastern and southern Maryland. Temperatures should be in the lower to middle 90s.

A cold front across the lower Great Lakes should sag southward into our region by Monday afternoon. Showers and thunderstorms, once again, could ignite ahead of and along this front. Temperatures could be in the 90s, as well.

The front could stall across the region Tuesday into Tuesday night; thus, allowing for showers and thunderstorms to remain a possibility. Temperatures should remain in the 90s.

AVIATION /14Z TUESDAY THROUGH SATURDAY/. High pressure will be in control through Wednesday, allowing for VFR conditions across the terminals. Winds today will be light out of the northwest, before gradually switching around to easterly tomorrow into tomorrow night. The marine influence from these easterly winds may enhance cloud cover tomorrow night. Most likely location for sub-VFR ceilings will be BWI/MTN.

Generally expect VFR conditions on Thursday across the region. However, showers and storms associated with an approaching cold front could affect the area during the afternoon/evening. MRB stands the highest chance, followed by IAD/CHO.

VFR conditions Friday through Saturday night. MVFR to IFR conditions possible in any thunderstorms at any terminal Friday into Friday night. Winds south to southwest 5 knots Friday, shifting northwest 5 to 10 knots Friday night. VFR conditions Saturday and Saturday night with the possibility of MVFR in heavy thunderstorms. Winds northwest becoming southeast 5 to 10 knots.

MARINE. Light NW winds/sub-SCA conditions will continue today. High pressure will be in control through Wednesday allowing for sub- SCA conditions with flow becoming more E/SE. Stronger S/SE flow will develop by Thursday, with potential SCA conditions by late in the day/Thursday night. Most storms should stay west of the waters on Thursday.

No marine hazards expected Friday through Saturday night except for a chance of thunderstorms each day. Winds south 10 knots Friday and Friday night. Winds shifting northwest 10 knots Saturday, then veering around to the southeast 5 to 10 knots Saturday night.

TIDES/COASTAL FLOODING. No coastal flooding issues are expected through Wednesday. Stronger south/southeast flow will return by late Thursday and could push some locations to near minor flooding thresholds by the evening high tide.

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

SYNOPSIS . ADS/KJP NEAR TERM . ADS/KJP SHORT TERM . ADS LONG TERM . KLW AVIATION . ADS/KLW/KJP MARINE . ADS/KLW TIDES/COASTAL FLOODING . ADS


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SLIM2 - 8577330 - Solomons Island, MD 3 mi77 min 84°F
44062 - Gooses Reef, MD 16 mi29 min Calm G 0 80°F 83°F
LWTV2 - 8635750 - Lewisetta, VA 23 mi65 min 83°F
BISM2 - 8571421 - Bishops Head, MD 26 mi65 min 85°F
NCDV2 28 mi65 min 85°F
CA2 - 8571892 - Cambridge, MD 29 mi65 min 85°F
BSLM2 - Chesapeake Bay, MD 33 mi125 min NNW 2.9 1015 hPa
TPLM2 - Thomas Point, MD 40 mi35 min ENE 4.1 G 5.1 80°F 81°F1017 hPa (+0.0)60°F
APAM2 - 8575512 - Annapolis, MD 45 mi65 min 84°F
WASD2 - 8594900 - Washington, DC 46 mi65 min 85°F

Wind History for Solomons Island, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St Marys County Airport, MD2 mi40 minNNW 310.00 miFair82°F62°F51%1016.6 hPa
Patuxent River, Naval Air Station, MD6 mi43 minNNE 1010.00 miA Few Clouds84°F64°F53%1015.9 hPa
St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity, MD14 mi42 minVar 510.00 miFair88°F66°F50%1015.6 hPa

Link to 5 minute data for KNHK

Wind History from NHK (wind in knots)
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Last 24hrSE3NE8NE8N7E3NE5SE3CalmS3S4SW6NW17
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1 day agoSE10SE12SE10SE11
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2 days agoN5SE5SE7SW6SW7NW4NW9NW4W5SW6CalmNW6W4W4SW4SW5SW4W4SW5SW6S3Calm53

Tide / Current Tables for Solomons Island, Patuxent River, Maryland
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Solomons Island
Click for Map
Tue -- 01:25 AM EDT     Moonrise
Tue -- 04:11 AM EDT     0.57 feet Low Tide
Tue -- 05:54 AM EDT     Sunrise
Tue -- 09:56 AM EDT     1.32 feet High Tide
Tue -- 02:57 PM EDT     Moonset
Tue -- 04:23 PM EDT     0.33 feet Low Tide
Tue -- 08:29 PM EDT     Sunset
Tue -- 10:43 PM EDT     1.47 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

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1.210.80.70.60.60.811.21.31.31.31.10.90.70.50.30.40.50.81.11.31.41.5

Tide / Current Tables for Point Patience, 0.1 mile southwest of, Maryland Current
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Point Patience
Click for MapFlood direction 315 true
Ebb direction 145 true

Tue -- 01:25 AM EDT     Moonrise
Tue -- 01:40 AM EDT     -0.61 knots Max Ebb
Tue -- 05:54 AM EDT     Sunrise
Tue -- 05:58 AM EDT     0.00 knots Slack
Tue -- 07:14 AM EDT     0.20 knots Max Flood
Tue -- 09:00 AM EDT     -0.00 knots Slack
Tue -- 01:09 PM EDT     -0.62 knots Max Ebb
Tue -- 02:57 PM EDT     Moonset
Tue -- 05:02 PM EDT     0.00 knots Slack
Tue -- 07:39 PM EDT     0.56 knots Max Flood
Tue -- 08:29 PM EDT     Sunset
Tue -- 10:45 PM EDT     -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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-0.5-0.6-0.6-0.5-0.4-0.200.20.20-0.2-0.4-0.6-0.6-0.6-0.5-0.3-00.30.50.60.40.2-0.1

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 (13,3,4,5)
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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.