Friday, December6, 2019
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Marine Weather and Tides
Parole, MD

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:09AMSunset 4:45PM Friday December 6, 2019 5:54 AM EST (10:54 UTC) Moonrise 1:57PMMoonset 1:26AM Illumination 71% Phase: Waxing Gibbous; Moon at 9 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- 338 Am Est Fri Dec 6 2019
.small craft advisory in effect from 9 am est this morning through late tonight...
Rest of the overnight..SW winds 5 kt. Waves less than 1 ft.
Today..SW winds 10 to 15 kt. Gusts up to 20 kt. Waves 2 ft.
Tonight..W winds 10 to 15 kt with gusts to 25 kt... Becoming nw with gusts to 20 kt after midnight. Waves 2 ft. Scattered sprinkles.
Sat..N winds 5 to 10 kt. Waves 1 ft.
Sat night..E winds 5 to 10 kt. Waves 1 ft.
Sun..S winds 5 to 10 kt. Waves 1 ft.
Sun night..S winds 5 to 10 kt. Waves 1 ft. Showers likely.
Mon..SW winds 10 to 15 kt. Waves 1 to 2 ft. Showers.
Tue..SW winds 10 to 15 kt...becoming nw. Waves 1 ft. Showers likely.
ANZ500 338 Am Est Fri Dec 6 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will move offshore of the carolinas through tonight. A pair of low pressure systems will split the mid-atlantic to the north and south Friday, with a cold front in between crossing the region from west to east by evening. High pressure will follow for the weekend, before a stronger area of low pressure develops over the mid-mississippi valley and tracks northeastward toward the eastern great lakes early next week. Small craft advisories may need to be extended into Saturday, and may be needed again Monday night through Tuesday.


7 Day Forecast for Marine Location Near Parole, MD
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location: 38.97, -76.55     debug


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 060927 CCA AFDLWX

Area Forecast Discussion . Corrected National Weather Service Baltimore MD/Washington DC 400 AM EST Fri Dec 6 2019

SYNOPSIS. High pressure will move offshore from the Carolinas today. A cold front will cross the area this evening. High pressure will follow for the weekend, before a stronger area of low pressure develops over the Mid-Mississippi Valley and tracks northeastward toward the eastern Great Lakes early next week.

NEAR TERM /THROUGH TONIGHT/. High pressure is situated along the southeastern coast this morning, and areas of low pressure are over Michigan and the Arklatex, connected by a cold front. An area of mountain wave cirrus developed last evening and has slowly been eroding, although any clear skies will be replaced by mid/high clouds advancing ahead of the next system.

Moisture ahead of the southern low will intersect the Appalachians by this afternoon, but westerly (downsloping) flow at 850 mb and above will likely mean precipitation will be focused along the Appalachian crest. Warm advection will result in temperatures in the upper 40s to mid 50s, and even on the ridgetops, temperatures should be well above freezing with most of the precipitation being rain. As the cold front sinks southeastward across the area late this afternoon and evening, a few very light showers could be found along it. Used sprinkle wording east of the mountains since the chance of measurable precipitation looks very low in the lowlands.

As cold air advances behind the front, precipitation could end as a little snow on the Allegheny Front. There also could be freezing drizzle as inversion heights crash, but it would be a very brief window and thus didn't put it in the forecast. Skies will clear late tonight with lows in the upper 20s to mid 30s.

SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/. A large/strong area of high pressure originating from Canada will quickly build east Saturday and be overhead by Saturday evening. Cold advection will result in highs in the 40s. Favorable radiational cooling on Saturday night will lead to widespread low to mid 20s, except lower 30s in the cities and by the Bay. The high will move offshore Sunday. Return flow will be offset by increasing clouds and poor mixing, with highs remaining below 50 for most.

A shortwave trough will be approaching from the nation's midsection Sunday night with low pressure developing over the mid Mississippi Valley. Moisture will stream into the area ahead of this system, and there could be additional focus of moisture along an inverted trough along the coast. Chances for rain will increase during the second half of the night. Low temperatures will be above freezing for most areas. However, some of the mountainous areas could be near freezing as the precipitation arrives, so a few pockets of wintry mix are within the realm of possibility if warm advection isn't fast/strong enough.

LONG TERM /MONDAY THROUGH THURSDAY/. High pressure will be centered over the western Atlantic on Monday. Low pressure will be moving NE from the Midwest into the Great Lakes Monday into Monday night as ir deepens. Southerly flow will advect warm and moist air into our region. This will increase the chance for showers over area for Monday.

The cold front associated to this low pressure will be approaching our region Monday night and will move across on Tuesday. Chance of showers will continue during this time and into Tuesday night. Cold air advection and residual moisture behind the front could allow for snow showers over parts of or CWA Tuesday night. Trough axis aloft will move across on Wednesday while surface high pressure starts building east and remains in control through the end of the week.

AVIATION /09Z FRIDAY THROUGH TUESDAY/. Mainly mid/high level clouds today with southwest flow ahead of an approaching cold front. There could be lower ceilings (around 5kft) and a few light showers or sprinkles as the front passes late this afternoon/early evening, but no visibility issues are expected. Winds will shift out of the northwest behind the front and could be briefly gusty to 20-25 kt.

No significant weather Saturday and Sunday with high pressure. Next weather system approaches Sunday night with lowering ceilings (possibly sub-VFR) and a chance of rain.

Chance of precipitation Monday through Tuesday night could bring sub- VFR conditions over the terminals as low pressure and cold front impact our area. Conditions should improve Wednesday when high pressure builds into our region.

MARINE. High pressure will move offshore today with southwest flow increasing. Have not changed the start times of the small craft advisories, which will be in effect for all waters by noon. Worth noting mixing may be poor and gusts sporadic. There could be a brief lull in winds early this evening with decoupling, but then a cold front will pass, winds will shift to the northwest and become gusty. Thus extended the advisory for all waters until 2 AM. Then winds will start diminishing from north to south through Saturday morning as high pressure builds.

Light winds expected Saturday afternoon through Sunday as high pressure builds across the area. Southerly flow may increase a bit Sunday night as the high departs, but looks to be sub- advisory at this time.

Sub-SCA conditions expected Monday into Monday night over the waters. SCA may be needed on Tuesday through Wednesday behind a cold front that will move across our area.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . Small Craft Advisory from noon today to 6 AM EST Saturday for ANZ531-538-539. Small Craft Advisory from 9 AM this morning to noon EST Saturday for ANZ533-534-537-541>543. Small Craft Advisory from noon today to 2 AM EST Saturday for ANZ530-535-536. Small Craft Advisory from 9 AM this morning to 6 AM EST Saturday for ANZ532-540.

SYNOPSIS . ADS NEAR TERM . ADS SHORT TERM . ADS LONG TERM . IMR AVIATION . ADS/IMR MARINE . ADS/IMR


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
APAM2 - 8575512 - Annapolis, MD 4 mi60 min 36°F 1021.3 hPa
44063 - Annapolis 6 mi36 min WSW 3.9 G 5.8 39°F 44°F1022.3 hPa
TPLM2 - Thomas Point, MD 8 mi54 min SSW 7 G 7 40°F 45°F1022.7 hPa (-0.3)28°F
CPVM2 9 mi60 min 41°F 36°F
BSLM2 - Chesapeake Bay, MD 16 mi144 min SSE 5.1 35°F 1021 hPa31°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 17 mi60 min SW 8.9 G 11 38°F 1021.6 hPa
BLTM2 - 8574680 - Baltimore, MD 21 mi60 min SW 1.9 G 1.9 35°F 49°F1021.2 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 23 mi60 min SSE 1.9 G 4.1 35°F 43°F1021.9 hPa
WASD2 - 8594900 - Washington, DC 26 mi60 min SSW 1 G 1.9 38°F 44°F1022 hPa
44062 - Gooses Reef, MD 29 mi48 min SSW 9.7 G 9.7 44°F 1022.7 hPa
CA2 - 8571892 - Cambridge, MD 37 mi60 min S 5.1 G 6 36°F 44°F1022.1 hPa
SLIM2 - 8577330 - Solomons Island, MD 45 mi60 min SW 1.9 G 4.1 40°F 48°F1021.8 hPa

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, MD4 mi2 hrsN 010.00 miFair36°F30°F79%1021.8 hPa
Bay Bridge Field, MD12 mi59 minS 310.00 miFair34°F30°F87%1022 hPa
Fort Meade / Tipton, MD14 mi60 minN 010.00 miPartly Cloudy28°F26°F93%1022.3 hPa
Baltimore, Baltimore-Washington International Airport, MD16 mi60 minN 010.00 miMostly Cloudy31°F24°F76%1021.6 hPa
Camp Springs / Andrews Air Force Base, MD20 mi2 hrsS 510.00 miFair33°F24°F69%1021.9 hPa
College Park Airport, MD20 mi78 minN 010.00 miFair31°F24°F77%1021.7 hPa
Baltimore, Inner Harbor, MD22 mi60 minno data mi35°F24°F64%1021.5 hPa

Link to 5 minute data for KNAK

Wind History from NAK (wind in knots)
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1 day agoCalmCalmCalmSW4SW6S43SW4W6CalmCalmW5
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Tide / Current Tables for Edgewater, South River, Maryland
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Edgewater
Click for Map
Fri -- 01:25 AM EST     Moonset
Fri -- 06:16 AM EST     0.04 feet Low Tide
Fri -- 07:10 AM EST     Sunrise
Fri -- 12:31 PM EST     0.80 feet High Tide
Fri -- 01:57 PM EST     Moonrise
Fri -- 04:43 PM EST     Sunset
Fri -- 06:39 PM EST     0.23 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.80.60.40.30.100.10.20.30.50.70.80.80.70.60.50.30.20.20.30.40.60.7

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Fri -- 12:25 AM EST     0.50 knots Max Flood
Fri -- 01:25 AM EST     Moonset
Fri -- 03:08 AM EST     -0.00 knots Slack
Fri -- 06:33 AM EST     -0.75 knots Max Ebb
Fri -- 07:09 AM EST     Sunrise
Fri -- 09:44 AM EST     0.00 knots Slack
Fri -- 01:08 PM EST     0.85 knots Max Flood
Fri -- 01:56 PM EST     Moonrise
Fri -- 04:38 PM EST     -0.00 knots Slack
Fri -- 04:42 PM EST     Sunset
Fri -- 07:34 PM EST     -0.63 knots Max Ebb
Fri -- 10:44 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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0.50.50.30-0.3-0.6-0.7-0.7-0.6-0.30.10.50.70.80.80.60.2-0.1-0.4-0.6-0.6-0.5-0.20.1

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 (5,6,7,8)
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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 numerious 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.