Monday, September28, 2020
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Marine Weather and Tides
Windsor, PA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 6:59AMSunset 6:55PM Monday September 28, 2020 1:04 AM EDT (05:04 UTC) Moonrise 4:53PMMoonset 2:34AM Illumination 83% Phase: Waxing Gibbous; Moon at 11 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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ANZ530 Chesapeake Bay North Of Pooles Island- 1037 Pm Edt Sun Sep 27 2020
.small craft advisory in effect from 10 am edt Monday through Monday afternoon...
Rest of tonight..S winds 5 kt. Waves less than 1 ft. Scattered showers late this evening, then isolated showers.
Mon..S winds 5 to 10 kt. Gusts up to 20 kt in the late morning and afternoon. Waves 1 ft.
Mon night..S winds 5 to 10 kt. Waves 1 ft. Scattered showers.
Tue..S winds 5 to 10 kt. Waves 1 ft. Showers with a chance of tstms.
Tue night..SW winds 5 to 10 kt. Waves 1 ft. Showers with a chance of tstms.
Wed..NW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Wed night..W winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Thu..W winds 5 to 10 kt. Waves 1 ft. A chance of showers in the morning.
Fri..NW winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 1037 Pm Edt Sun Sep 27 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. Weak area of high pressure will continue to move away tonight into Monday allowing for the next disturbance to migrate in Tuesday. Multiple areas of low pressure are expected to move across the area during the middle portion of the week. Small craft advisories may be needed for portions of the waters through the middle of the week.


7 Day Forecast for Marine Location Near Windsor , PA
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location: 39.9, -76.53     debug


Area Discussion for - State College, PA
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FXUS61 KCTP 280302 AFDCTP

Area Forecast Discussion National Weather Service State College PA 1102 PM EDT Sun Sep 27 2020

SYNOPSIS. Unseasonably mild and mainly dry weather is expected overnight into Monday. Periods of much needed rain are likely from Monday night into Wednesday, as a cold front approaches slowly from the Midwest. Some heavier rain is possible across east-central Pennsylvania Tuesday night. The cold front will usher in much cooler/below average temperatures to end September and begin October.

NEAR TERM /UNTIL 8 AM MONDAY MORNING/. Sat IR loop shows plenty of clouds at various low and mid levels but virtually no precip in our CWA. Slightly anomalous south-southeasterly flow was noted over our eastern zones, while similarly anomalous SW winds were present acrs the western mtns.

a slightly higher pop for briefly heavier showers exists over the far eastern tip of Schuylkill county where a compact shortwave aloft and a few hours of enhanced llvl easterly flow will occur.

Expectations are similar to the last two nights. Low clouds should start to develop/lower through the night, mainly over the eastern half of the area and upslope areas in the SE flow. However, there is more dry air under the inversion right now vs Sat aftn. So, we'll expect that conditions will not get as bad tonight. But, there will still be some fog and perhaps a little DZ in the east and on the higher elevations and Allegheny Front.

Expect just a few isolated showers to drift north across the region overnight and it'll be mild with upper 50s to mid 60s min temps some 15-18 deg f above normal. Enjoy!

SHORT TERM /8 AM MONDAY MORNING THROUGH 6 PM MONDAY/. As clouds again break up on Monday morning, the mixing should get much deeper than recent days. This will create some tall cu and sct SHRA over the higher elevations. The wind will be more southerly than as of late as well. Thanks to the very warm start and daytime heating, we could reach 80 in the lower elevations, and everyone will get into the 70s. The other shoe will drop in a couple of days. Will keep PoPs <40pct in general, and keep them along the spine of the App mtns.

LONG TERM /MONDAY NIGHT THROUGH SUNDAY/. An upper-level trough of low pressure will dig over the Great Lakes region early in the week and persist across the eastern United States through the remainder of the week and into next weekend.

At the surface, a cold front will approach the area Monday night and slowly progress eastward across the commonwealth on Tuesday. The front will be slow to clear the region, as waves of low pressure develop and track northeastward along it. As a result, some much needed rainfall appears likely Tuesday into Tuesday night and WPC has introduced a broad MRGL risk area covering most of central PA for that timeframe.

Showers return to some of the area on Thursday as another low pressure system tracks northeast of Pennsylvania.

After that, the later part of the week looks cooler with temperatures trending below normal by next weekend and beyond.

AVIATION /03Z MONDAY THROUGH FRIDAY/. Dewpoints are rising over the east, so more low clouds expected overnight, though they may not be as bad/low/widespread as our last two nights.

Heating Monday should mix away the clouds again, and probably a little faster than Sunday. The inversion is higher, too, so the diurnal cu should get deeper/taller. A couple of SHRA will pop over the higher terrain, mainly near/north of UNV/IPT/AOO.

The convection along the front will likely stay just to the west of the state through at least 00Z. Even that convection could break up/dissipate with the loss of heating here during late Sept. SCT SHRA still poss, mainly over the W Mon night.

Outlook .

Tues-Tues PM . CFROPA. Restrictions likely, with widespread SHRA, sct TSRA. TSRA s/b mainly in the east at night.

Wed . MVFR with -SHRA poss E. Otherwise no sig wx.

Wed PM . IFR poss SE in RA/low cigs. Mainly VFR elsewhere.

Thurs-Fri . NW flow. MVFR and sct SHRA NW, MVFR stratocu elsewhere

EQUIPMENT. KCCX continues to be offline due to an electronic issue. Parts are expected to arrive later today.

CTP WATCHES/WARNINGS/ADVISORIES. None.

SYNOPSIS . Lambert/Dangelo NEAR TERM . Lambert/Dangelo SHORT TERM . Dangelo LONG TERM . Evanego/Gutierrez AVIATION . Dangelo/RXR/Gutierrez EQUIPMENT .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BLTM2 - 8574680 - Baltimore, MD 44 mi46 min Calm G 2.9 74°F1011.7 hPa
CHCM2 - 8573927 - Chesapeake City, MD 46 mi46 min 70°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 47 mi46 min S 5.1 G 5.1 70°F 1012.1 hPa
FSNM2 47 mi46 min S 5.1 G 6 1012 hPa

Wind History for Baltimore, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
York, York Airport, PA18 mi71 minS 310.00 miPartly Cloudy68°F64°F90%1012.4 hPa
Lancaster, Lancaster Airport, PA19 mi71 minN 07.00 miOvercast70°F66°F90%1012.4 hPa

Link to 5 minute data for KTHV

Wind History from THV (wind in knots)
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Last 24hrCalmCalmCalmNW3W3CalmCalmCalmCalmCalmCalmCalmSE4SE8SE5S4CalmSE3SE4CalmSE4S5S3Calm
1 day agoCalmCalmCalmCalmCalmE3N3NE4E4E5NE44N5N4NE5NW3N3N3N3CalmSE3E4SE3SE3
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSE6E4SW43SE6S8S33CalmCalmCalmCalmSE4

Tide / Current Tables for Port Deposit, Susquehanna River, Maryland
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Port Deposit
Click for Map
Mon -- 03:29 AM EDT     0.88 feet Low Tide
Mon -- 03:33 AM EDT     Moonset
Mon -- 06:58 AM EDT     Sunrise
Mon -- 09:13 AM EDT     3.41 feet High Tide
Mon -- 05:03 PM EDT     1.09 feet Low Tide
Mon -- 05:50 PM EDT     Moonrise
Mon -- 06:50 PM EDT     Sunset
Mon -- 09:16 PM EDT     2.63 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.61.31.10.90.91.31.92.63.23.43.43.22.82.421.51.21.11.31.82.32.62.62.4

Tide / Current Tables for Havre de Grace, Susquehanna River, Maryland (2)
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Havre de Grace
Click for Map
Mon -- 02:01 AM EDT     0.73 feet Low Tide
Mon -- 03:33 AM EDT     Moonset
Mon -- 06:58 AM EDT     Sunrise
Mon -- 08:20 AM EDT     2.85 feet High Tide
Mon -- 03:35 PM EDT     0.90 feet Low Tide
Mon -- 05:49 PM EDT     Moonrise
Mon -- 06:50 PM EDT     Sunset
Mon -- 08:23 PM EDT     2.20 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.80.70.81.21.72.22.62.82.82.62.31.91.51.20.90.91.21.622.22.221.7

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
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.