Monday, September25, 2017 L-36.com


Marine Weather and Tides
Washington Boro, PA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:55AMSunset 6:57PM Monday September 25, 2017 12:12 AM EDT (04:12 UTC) Moonrise 11:05AMMoonset 9:26PM Illumination 20% Phase: Waxing Crescent; Moon at 4 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- 1136 Pm Edt Sun Sep 24 2017
Rest of tonight..NE winds around 5 kt. Waves flat.
Mon..E winds 5 kt. Waves flat.
Mon night..NE winds 5 kt. Waves less than 1 ft.
Tue..NE winds 5 to 10 kt. Waves 1 ft.
Tue night..NE winds 5 to 10 kt. Waves 1 ft.
Wed..NE winds 5 to 10 kt. Waves 1 ft.
Wed night..NE winds 5 kt. Waves less than 1 ft.
Thu..N winds 5 to 10 kt. Waves 1 ft.
Fri..NW winds 5 to 10 kt. Waves 1 ft.
ANZ500 1136 Pm Edt Sun Sep 24 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A ridge of high pressure will remain over the northeastern united states through the first part of the week. Small craft advisories may be needed Tuesday through Thursday as hurricane maria approaches north carolina. Refer to the latest statements from the national hurricane center for up-to-date information on hurricane maria.

7 Day Forecast for Marine Location Near Washington Boro, PA
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location: 40, -76.49     debug


Area Discussion for - State College, PA
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Fxus61 kctp 250306
afdctp
area forecast discussion
national weather service state college pa
1106 pm edt Sun sep 24 2017

Synopsis
Unseasonable late-september heat will continue in central pa
through early week. Mostly dry weather will also prevail with
just an isolated shower possible in spots on Wednesday. A
pattern change will bring cooler, fall-like weather back to the
area for second half of the week and into the upcoming weekend.

Near term until 6 am Monday morning
Skies will remain mostly clear overnight, with nothing more than
thin cirrus over mainly southwest portions, and it will remain
mild. Minimum temps will run about +15 degrees above climate
averages. Some morning fog is expected in the valleys.

Short term 6 am Monday morning through Monday night
Areas of fog in the morning will give way to another very warm
and muggy afternoon by late-september standards with max
temperatures in the mid 80s to around 90f (+15-20 degrees above
normal). It will feel even warmer with MAX hx values between 90
and 95 degrees.

Long term Tuesday through Sunday
The blocking high that has been responsible for the recent
extended spell of dry and anomalously warm conditions is
forecast to start breaking down early this week, with shortwave
energy sliding along the us-canadian border finally chewing
away at the high heights and bringing some cooler air eastward.

In the meantime maria is still forecast to drift northward into
the offshore waters off of CAPE hatteras on Wednesday. But the
aforementioned northern stream shortwave finally gives it the
incentive to take a hard turn east as the storm passes 35 deg
north.

For our area, it looks like the first chance we will have to
see any rain might be Wednesday with a weakening cold front that
is destined to fall apart in the unfavorable shear on the
northwest side of the sprawling hurricane. Any rainfall amounts
look to be scattered and light, bringing little change to the
dry conditions we've had around here for much of september.

A bit more significant trough drops toward us for the end of
the week into next weekend. The ECMWF looks a bit more potent
but otherwise timing looks comparable between longer-range
models. Not seeing much in the way of noteworthy precipitation
again, with scattered light showers possible through this time.

Biggest change will be that temps will drop off from our streak
of well above-normal levels back toward seasonal normals by
Friday.

Aviation 03z Monday through Friday
High pressure over the area will ensureVFR conditions and light
wind through Monday over most of the area. The only concern will
be patchy valley fog early Monday morning (mainly between
08z-13z). Based on a combination of SREF probability charts,
mos and conditional climatology, believe a period of ifr lifr
reductions are likely at kbfd kipt klns, possible at
kunv kaoo kmdt and near zero at kjst.

Tue-wed... Patchy am valley fog possible.

Thu-fri... No sig wx expected.

Climate
Record-challenging late-september heat through early week.

Daily high temperature records from 9 24 through 9 26:
bradford: 82* in 1961, 83 in 2007, 79 in 1998
williamsport: 90 in 1961, 89 in 1970, 92 in 1900
harrisburg: 97 in 1970, 93 in 1970, 91 in 1970
altoona: 91 in 1970, 90 in 1970, 88 in 1998
*83f as of 1 pm

Ctp watches warnings advisories
None.

Synopsis... Steinbugl
near term... Devoir steinbugl
short term... Steinbugl
long term... Rxr
aviation... Fitzgerald
climate...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44057 - Susquehanna, MD 39 mi43 min N 3.9 G 3.9 75°F 1017.4 hPa
CHCM2 - 8573927 - Chesapeake City, MD 49 mi61 min Calm G 1 71°F 76°F1017.8 hPa
BLTM2 - 8574680 - Baltimore, MD 51 mi55 min N 4.1 G 5.1 80°F 79°F1016.8 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 54 mi55 min E 1 G 1 78°F 1017.2 hPa

Wind History for Chesapeake City, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lancaster, Lancaster Airport, PA13 mi20 minN 010.00 miFair70°F68°F93%1017.4 hPa
York, York Airport, PA21 mi20 minN 06.00 miFog/Mist64°F64°F100%1018 hPa
Harrisburg, Harrisburg International Airport, PA21 mi17 minN 08.00 miFair71°F69°F94%1017.4 hPa

Wind History from LNS (wind in knots)
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Last 24hrCalmNW4CalmCalmW3W5W5W6SW4Calm34E5NE7E7E6E4SE4SE3CalmCalmCalmCalmCalm
1 day agoW4CalmW4W4W5W4W5W5W6NW7N53N9N6--N8NW7NW6NW5W4W5W4W4W3
2 days agoNE3E3CalmW4W4W3W4W4W3W3NW5NW8N6NW5N9NW10NW8NW6NW5NW4N4NW4W4W5

Tide / Current Tables for Port Deposit, Susquehanna River, Maryland
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Port Deposit
Click for Map
Mon -- 02:48 AM EDT     3.42 feet High Tide
Mon -- 06:55 AM EDT     Sunrise
Mon -- 10:40 AM EDT     1.43 feet Low Tide
Mon -- 12:02 PM EDT     Moonrise
Mon -- 02:43 PM EDT     2.59 feet High Tide
Mon -- 06:56 PM EDT     Sunset
Mon -- 09:38 PM EDT     0.79 feet Low Tide
Mon -- 10:25 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.12.83.33.43.332.62.21.91.61.51.41.72.12.52.62.42.11.71.310.80.81.1

Tide / Current Tables for Havre de Grace, Susquehanna River, Maryland
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Havre de Grace
Click for Map
Mon -- 01:32 AM EDT     2.46 feet High Tide
Mon -- 06:55 AM EDT     Sunrise
Mon -- 08:44 AM EDT     0.46 feet Low Tide
Mon -- 12:02 PM EDT     Moonrise
Mon -- 02:20 PM EDT     1.96 feet High Tide
Mon -- 06:56 PM EDT     Sunset
Mon -- 08:18 PM EDT     0.45 feet Low Tide
Mon -- 10:25 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.22.42.42.21.91.51.10.80.50.50.611.41.81.91.91.71.310.60.50.50.81.3

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Mid-Atlantic    EDIT
Geos

Wind Forecast for State College, PA (0,6,7,8)
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Ground Weather Radar Station Dover AFB, DE
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weather_mapweather_map weather_map

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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 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.