Sunday, May26, 2019 L-36.com


Marine Weather and Tides
Chambersburg, PA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 5:45AMSunset 8:29PM Sunday May 26, 2019 3:14 AM EDT (07:14 UTC) Moonrise 1:01AMMoonset 11:43AM Illumination 52% Phase: Third Quarter Moon; Moon at 22 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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ANZ538 Patapsco River Including Baltimore Harbor- 134 Am Edt Sun May 26 2019
Overnight..SW winds 5 to 10 kt. Waves 1 ft. A chance of showers with a slight chance of tstms.
Sun..W winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Sun night..NW winds 5 to 10 kt. Waves 1 ft or less. A chance of showers and tstms.
Mon..N winds 5 kt. Waves flat.
Mon night..SE winds around 5 kt. Waves flat. A chance of showers.
Tue..S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Tue night..W winds 5 kt. Waves less than 1 ft.
Wed..SW winds 5 to 10 kt. Waves 1 ft or less.
Thu..W winds 5 to 10 kt. Waves 1 ft. A chance of showers. A chance of tstms through the night. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 134 Am Edt Sun May 26 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will shift offshore of the eastern united states through tonight. A weak cold front will approach the waters Sunday, lingering nearby through Monday. High pressure off the southeastern united states coast will then be in control in the middle of the week. Small craft advisories may be needed for portions of the waters Sunday night into Monday and again on Wednesday.


7 Day Forecast for Marine Location Near Chambersburg , PA
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location: 39.93, -77.66     debug


Area Discussion for - State College, PA
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Fxus61 kctp 260627
afdctp
area forecast discussion
national weather service state college pa
227 am edt Sun may 26 2019

Synopsis
Warm temperatures and high humidity will last into Sunday.

Showers and thunderstorms will also be around, mainly during
the afternoon and evening hours each day. Memorial day will
feature near normal temperatures and comfortably lower humidity.

A few more rounds of showers and scattered thunderstorms with
gusty wind and locally heavy rain appear likely for both Tuesday
and Wednesday afternoons and evenings.

Near term until 6 am this morning
Severe watch #243 has been cancelled. Solid band of showers with
embedded thunder bisects central pa from NE to sw. Storms have
weakened below marginal levels, but still seeing some signatures
capable of 30-40 mph gusts near the ny border which we'll
monitor through late evening.

Previous timing of pops still in good shape as the weakening
convection slides eastward. , as showers have cleared the nw
mountains expect the rain to clear ipt unv by 03z and the srn
cities by 05z or 06z at the latest. The wind does not die off
completely, but fog could form in the wake of the storms where
the sky initially clears out. Much drier air will dip into nrn
pa overnight. Mins will be still be in the 60s, though, and it
will stay muggy for the SRN half or more of the cwa.

Short term 6 am this morning through 6 pm Monday
Muggy air will hang around the SRN half of the state on Sunday.

Additional showers and storms will fire up - with the swrn part
of the CWA still in a mrgl to slgt risk for excessive rainfall.

Will nudge the pops a little higher for the sw, and downward a
notch for the NRN tier. MAX temps will be a little cooler than
sat in the N and w, but warmer by a deg or two in the SE thanks
to the downslope flow. Mrgl-slgt risk for severe still exists in
roughly the same area as the ero, but a little farther to the
south where the best instability will be.

Long term Monday night through Saturday
110 pm update... On the large-scale, a western conus
upper trough eastern CONUS upper ridge pattern still looks to
prevail for most of next week, before the ridge flattens a bit
towards next weekend, as an eastern canadian trough perhaps
builds southward. In general, this means continued warm
temperatures through at least mid-week, perhaps cooling towards
the end of the period.

As for the daily sensible weather, as a cold front settles south
of the commonwealth and high pressure noses down from canada, we
should dry out Sunday night, with a nice memorial day likely on
tap. On Tuesday, a warm front should approach from the south and
west, with this boundary probably stalling out somewhere near or
over the commonwealth Wednesday-Thursday. This means that
unsettled weather comes back into the forecast, with daily
chances for showers and thunderstorms. A cold front may sweep
much of the moisture south and east of the region for the end
of the week, with cooler and drier weather possible at that time
frame.

Daily highs will mostly range from the mid 70s-mid 80s through
at least Thursday, with some cooling anticipated thereafter.

Aviation 06z Sunday through Thursday
Showers and storms have moved out of the region. Winds have
calmed down through the NW and ifr CIGS have already formed at
bfd. Latest href shows ifr CIGS forming through the NW and
potentially at ipt, mdt and lns. Mdt and ipt are already at
MVFR and lns has a dewpoint depression of two. Couple this with
the light, moist southerly flow at lns, and clam winds at mdt,
and ifr CIGS and MVFR to ifr vsbys are possible after 09z. Any
restrictions that form should continue until after sunrise. Ipt
has seen 0.29 inches of rainfall today. This along with the
calm winds and given their location near the river, ifr CIGS and
vsbys are possible from now until 12z as well.

A cold front will move through Sunday morning, which will help
break any inversion and clear up any restrictions. The front
moving through the NW could spark showers and possibly a late
morning thunderstorm. The latest hrrr shows this. I have so far
left it off the bfd taf, however it is possible between 15z to
18z. Another round of showers and thunderstorms will be possible
this afternoon and the first half of the evening through the
lower susquehanna.

With this front will be a wind shift to the NW and an increase
of winds to 10 to 15 mph with gusts upwards of 20 mph.

Less chance of showers and storms on memorial day.

Some chance of more showers and storms again after Monday.

Outlook
Mon-tues am...VFR.

Tues pm-thurs... MainlyVFR, although spotty showers storms are
expected each aftn evening.

Ctp watches warnings advisories
None.

Synopsis... Dangelo
near term... Dangelo devoir
short term... Dangelo
long term... Jurewicz
aviation... Ceru martin


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BLTM2 - 8574680 - Baltimore, MD 73 mi44 min SW 1.9 G 4.1 69°F 71°F1015.4 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 78 mi44 min SSW 4.1 G 4.1 69°F 1015.9 hPa
WASD2 - 8594900 - Washington, DC 81 mi44 min W 1.9 G 1.9 70°F 73°F1016.2 hPa

Wind History for Baltimore, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hagerstown, Washington County Regional Airport, MD16 mi21 minSW 57.00 miFair70°F66°F90%1016.4 hPa

Wind History from HGR (wind in knots)
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Last 24hrNW3N4CalmCalm4SE10SE6S10SE8S8S14SE11S13S10S4S8S8S7S8SW5CalmSE4S7SW5
1 day agoNW11
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Tide / Current Tables for Middle Branch, Baltimore Harbor, Maryland
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Middle Branch
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Sun -- 01:28 AM EDT     1.17 feet High Tide
Sun -- 01:55 AM EDT     Moonrise
Sun -- 05:45 AM EDT     Sunrise
Sun -- 07:26 AM EDT     0.58 feet Low Tide
Sun -- 12:34 PM EDT     Last Quarter
Sun -- 12:40 PM EDT     Moonset
Sun -- 01:35 PM EDT     1.31 feet High Tide
Sun -- 08:22 PM EDT     Sunset
Sun -- 08:37 PM EDT     0.50 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.21.21.10.90.80.60.60.60.70.811.21.31.31.21.10.90.70.60.50.50.60.8

Tide / Current Tables for Middle Branch, Baltimore Harbor, Patapsco River, Maryland
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map and Satellite Images
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wmap_A
GOES 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.
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Wind Forecast for State College, PA (3,6,7,8)
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Ground Weather Radar Station Sterling, VA
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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.