Wednesday, September19, 2018 L-36.com


Marine Weather and Tides
Galena, MD

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9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 6:47AMSunset 7:05PM Wednesday September 19, 2018 1:03 PM EDT (17:03 UTC) Moonrise 3:20PMMoonset 12:28AM Illumination 73% Phase: Waxing Gibbous; Moon at 10 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- 1034 Am Edt Wed Sep 19 2018
Rest of today..N winds 10 kt. Waves 1 ft.
Tonight..NE winds 5 kt. Waves less than 1 ft.
Thu..SE winds 5 kt. Waves less than 1 ft.
Thu night..SE winds 5 to 10 kt. Waves 1 ft.
Fri..S winds 5 to 10 kt. Waves 1 ft.
Fri night..SW winds 5 to 10 kt. Waves 1 to 2 ft.
Sat..N winds 5 to 10 kt. Waves 1 ft or less. A chance of showers.
Sun..NE winds 5 kt. Waves less than 1 ft. A chance of showers.
ANZ500 1034 Am Edt Wed Sep 19 2018
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build over the waters today into Thursday before moving offshore later in the week. A cold front will approach this weekend, then stall near or just south of the waters.


7 Day Forecast for Marine Location Near Galena, MD
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location: 39.37, -75.93     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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Fxus61 kphi 191619
afdphi
area forecast discussion
national weather service mount holly nj
1219 pm edt Wed sep 19 2018

Synopsis
High pressure will build in from the west today. The high will slide
off the northeastern coast on Thursday. A cold front will cross the
region late Friday into Saturday and then stall to the south of our
area through early next week. Meanwhile, high pressure will build
across the northeast for the start of the week.

Near term until 6 pm this evening
Some patchy low and mid clouds have spread into parts of nj,
but the bulk of the lower clouds remain offshore. As a result,
there has been some more in the way of Sun into the early
afternoon, and temps have warmed into the upper 70s low 80s.

Think temps may climb another couple of degrees or so, and end
up in line with the forecasted high.

That being said, clouds will continue to increase going through
the afternoon. Onshore flow also ushering humid airmass into
eastern nj, as dew points are rising into the lower 70s.

Short term 6 pm this evening through 6 am Thursday
The main concern tonight is the extent of low stratus across
the area.

Models suggest low-level flow becomes more northeasterly
tonight on the upstream side of the vort MAX moving through the
northern mid- atlantic today and a developing surface low
offshore. This will very likely allow the low-stratus deck to
our northeast to set in over much of the area overnight, and
increased sky cover considerably to account for this trend.

Nevertheless, the more northerly flow in northern western
portions of the area will act to prevent westward progress of
the stratus deck to some degree, which would permit more
substantial cooling in these areas overnight. Lowered minimum
temperatures here by about 5 degrees from the previous forecast,
but tempered this cooling trend south east of the interstate 95
corridor given the expected increased cloud cover.

Patchy fog is possible across the area, but suspect this will
be curbed to some degree by the low stratus moving in. Did make
mention of this in the forecast, but think any impacts would be
rather localized.

Long term Thursday through Tuesday
Thursday... High pressure will build across the northeastern united
states on Thursday. Ridging aloft along with dry air in the mid
levels in the north to northwest flow, should be enough to keep the
region dry through the day. A layer of moisture is present in model
soundings but without much support, do not see precipitation
falling. More of an indicator of a cloudy day across the region.

Winds at the surface may become more east to southeast as the high
noses down into our region from the north. Overall, expect Thursday
to be a much cooler day with highs remaining in the 70s across the
region.

Friday through Saturday... The high shifts to the northeast of the
region, returning us to more south to southwest flow. This flow will
allow for increasing low level moisture (higher dew points) and as a
result a return to higher humidity. Temperatures on Friday will rise
into the upper 70s to lower 80s across the region. The main low
pressure system will cross through eastern canada Friday night. This
low will drag a cold front across the region late Friday through
early Saturday. The front sags southward and then stalls to the
south of our forecast area. Showers and thunderstorms are expected
to accompany the frontal passage, with conditions starting to clear
on Saturday.

Uncertainty with respect to how far south the front stalls will
impact the remainder of the weekend as waves traverse the boundary.

Scattered showers and thunderstorms will remain possible through at
least Sunday, especially across our southern areas which will be
closer to the stalled boundary. With the increased moisture, pwat's
will start to rebound and rise to 1.5-2.0 inches by Friday night,
which means some storms may produce higher rainfall rates as the
front moves through.

Monday through Tuesday... High pressure builds across new england
late in the weekend and persists through Monday. The front to the
south will try to push northward as a warm front but that will be
tempered by the strength of the high to the north which may suppress
any northward progression by blocking the boundary. The front may
start to push northward on Tuesday as the high starts to shift
towards newfoundland. Scattered showers and thunderstorms will
remain possible through this period as considerable uncertainty
remains. Best chances for precipitation will remain across our
southern areas with a gradual expansion northward through
Tuesday.

Aviation 16z Wednesday through Sunday
The following discussion is for kphl, kpne, kttn, kabe, krdg,
kilg, kmiv, kacy and surrounding areas.

Today... GenerallyVFR, but CIGS may lower to MVFR from time to
time at some of the terminals, especially kmiv kacy. Winds north
to northeast around 10 kts. Low confidence.

Tonight... MVFR CIGS developing with a low chance for ifr cigs.

Patchy fog may also develop, but this looks less likely than
development of low stratus. Low confidence. NE winds less than
10 kt.

Outlook...

Thursday... MVFR in status to start the day. Ceilings should lift to
vfr by early afternoon. Northeast winds around 5 to 10 knots,
becoming southeast later in the day.

Friday... MainlyVFR conditions expected. Light southeast winds early
will become south around 10 knots. Gusts around 20 knots possible.

Friday night through Saturday... MainlyVFR conditions with MVFR or
lower possible in scattered showers and thunderstorms. South to
southwest winds Friday night becoming northwest to north by Saturday
morning behind a cold frontal passage.

Sunday... MainlyVFR conditions expected. Northeast winds around 5
knots. Scattered showers possible.

Marine
Sub-advisory winds seas are expected today. Winds will be northerly
this morning but should become more northeasterly this afternoon,
with speeds 10 to 15 kts and gusts to 20 kts. Seas of 3 to 4 feet
are expected on the atlantic waters (less on delaware bay).

Winds will become more easterly with time tonight, with speeds
remaining 10 to 15 kts with gusts to 20 kts. Seas may begin to
increase on the atlantic waters, approaching 5 feet after midnight.

For now, held off on a small craft advisory, since forecast seas
merely touch 5 feet rather than exceed them. Nevertheless, may need
to issue an advisory if wave heights trend upward overnight.

Outlook...

Thursday... Seas may linger near 5 feet on the ocean waters through
Thursday. Conditions look marginal and will hold off on issuing any
small craft advisories at this time.

Friday through early Saturday... South to southwest winds will
increase through the day Friday, around 25 knots ahead of an
approaching cold front. Winds will turn more to the southwest and
then west to northwest by Saturday. Seas will also start to build to
around 5 feet. A small craft advisory will likely be needed.

Saturday morning through Sunday... West northwest winds on Saturday
will turn to the north and then northeast for late Saturday night
through Sunday. Seas will be around 2 to 4 feet.

Rip currents...

a moderate risk of rip currents exists today, as medium-period
easterly or southeasterly swell is forecast with winds becoming more
northeasterly with time.

Phi watches warnings advisories
Pa... None.

Nj... None.

De... None.

Md... None.

Marine... None.

Synopsis... Meola
near term... Cms mps
short term... Cms
long term... Meola
aviation... Cms meola mps
marine... Cms meola mps


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHCM2 - 8573927 - Chesapeake City, MD 13 mi33 min N 8 G 9.9 80°F 73°F1013.4 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 20 mi33 min N 7 G 8 75°F 75°F1013.9 hPa
DELD1 - 8551762 - Delaware City, DE 23 mi33 min N 9.9 G 12 78°F 70°F1013.1 hPa
SJSN4 - 8537121 - Ship John Shoal, NJ 30 mi33 min N 12 G 13 78°F 77°F1012.6 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 33 mi33 min N 8.9 G 11 79°F 1013.5 hPa
FSNM2 33 mi33 min N 11 G 15 79°F 1013.5 hPa
DRSD1 - Delaware Reserve, DE 33 mi93 min N 5.1 80°F 1013 hPa68°F
BLTM2 - 8574680 - Baltimore, MD 35 mi39 min NE 9.9 G 15 80°F 78°F1013.2 hPa
CPVM2 36 mi33 min 78°F 70°F
44063 - Annapolis 39 mi33 min NNE 12 G 16 79°F 1013.9 hPa
APAM2 - 8575512 - Annapolis, MD 40 mi33 min 80°F 1013.1 hPa
MRCP1 - 8540433 - Marcus Hook, PA 41 mi33 min 80°F 74°F1013 hPa
TPLM2 - Thomas Point, MD 42 mi63 min N 11 G 11 77°F 75°F1014.4 hPa (+0.7)68°F

Wind History for Chesapeake City, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Phillips Army Air Field / Aberdeen, MD14 mi2.1 hrsN 810.00 miPartly Cloudy77°F68°F74%1013.8 hPa

Wind History from APG (wind in knots)
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Last 24hrN3N64CalmNW4CalmCalm------------------CalmCalmN6N85N8N96
1 day ago------------------------------------SW8SW9SW9SW10S10W3
2 days ago--NE7--E7--------E3----------------------NE4------

Tide / Current Tables for Sassafras River, Betterton, Chesapeake Bay, Maryland
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Chesapeake and Delaware Canal, Maryland/Delaware Current
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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    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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Philadelphia/Mount Holly, PA (13,3,4,5)
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Ground Weather Radar Station Dover AFB, DE
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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.