Thursday, July18, 2019 L-36.com


Marine Weather and Tides
Delaware City, DE

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Sunrise 5:48AMSunset 8:29PM Thursday July 18, 2019 4:47 AM EDT (08:47 UTC) Moonrise 8:51PMMoonset 6:16AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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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ANZ430 Delaware Bay Waters North Of East Point Nj To Slaughter Beach De- 329 Am Edt Thu Jul 18 2019
Today..S winds 5 to 10 kt. Waves 2 ft or less. Patchy fog early this morning. A slight chance of showers early this morning. A slight chance of tstms this morning, then showers likely with a chance of tstms this afternoon.
Tonight..SW winds 5 to 10 kt, becoming W late. Waves 2 ft or less. A chance of tstms early in the evening. Showers likely in the evening. A chance of showers after midnight. Patchy fog after midnight.
Fri..W winds around 5 kt, becoming sw around 5 kt in the afternoon. Waves 2 ft or less. Patchy fog early in the morning.
Fri night..SW winds around 5 kt. Waves 2 ft or less.
Sat..W winds 5 to 10 kt. Waves 2 ft or less.
Sat night..SW winds 5 to 10 kt. Waves 2 ft or less.
Sun..SW winds 5 to 10 kt. Waves 2 ft or less.
Sun night..SW winds 5 to 10 kt. Waves 2 ft or less. A chance of showers and tstms.
Mon..W winds around 5 kt. Waves 2 ft or less. A chance of showers and tstms.
Mon night..NW winds 5 to 10 kt. Waves 2 ft or less. A chance of showers and tstms. Winds and waves higher in and near tstms.
ANZ400 329 Am Edt Thu Jul 18 2019
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. Weak low pressure will remain in our region today before drifting out over the ocean tonight. Hot humid high pressure is forecast to build up from the southwest for Friday and the weekend. A slow moving cold front approaching from the northwest is expected to arrive on Monday, followed by an area of high pressure from the west for the middle of the new week.


7 Day Forecast for Marine Location Near Delaware City, DE
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location: 39.57, -75.59     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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Fxus61 kphi 180748
afdphi
area forecast discussion
national weather service mount holly nj
348 am edt Thu jul 18 2019

Synopsis
Weak low pressure will remain in our region today before
drifting out over the ocean tonight. Hot humid high pressure is
forecast to build up from the southwest for Friday and the
weekend. A slow moving cold front approaching from the northwest
is expected to arrive on Monday, followed by an area of high
pressure from the west for the middle of the new week.

Near term until 6 pm this evening
This morning:
will continue to see isolated to scattered showers this
morning, due to a combination of the very moist airmass (as
evident by satellite model analysis pwats in the 2.3-2.4 inch
range) and lift ahead of the shortwave trough associated with
barry's remnant mid-lvl circulation. Don't expect these to be
intense due to lack of instability, however can't rule out some
brief locally heavy downpours given the moist airmass. Also will
have to watch out for patchy fog due to the low t TD spreads
but mid- lvl cloud cover may be an inhibiting factor.

This afternoon:
the mid-lvl shortwave will be somewhat slow to clear the area
today with perhaps some weak backside energy behind it. This
feature has helped spawn a weak low-lvl circulation to our nw,
which will drift SE over the area today. This low trough will
both help keep moisture in the area and also potentially act as
a focus for storms (via confluence). Consequently expect fairly
widespread convection to develop this afternoon with the
positioning of the low and moisture gradient perhaps favoring
the central half of our area (although really anywhere could see
storms). The main threat with these storms will be heavy rain
as pwats will remain over 2 inches, and will be combined with
cape values around 1500-2000 j kg, and deep (13-14k ft) warm
cloud layers. Did consider issuing a flash flood watch this
package, particularly over eastern pa where FFG was low, but
lacked sufficient confidence due to both instability concerns
(potential low-lvl cloud cover) and precipitation placement
concerns.

Although the hydro threat remains, feel the organized severe
threat will be lower today due to both lower instability and
fairly weak dynamics and shear (bulk shear generally 20 kts or
less). Obviously can never rule out some isolated strong
microburst storms in these kind of environments but anything
organized looks unlikely.

Due to the aforementioned cloud cover and precipitation,
temperatures will be a bit cooler today than any of the days
surrounding it, with highs generally in the upper 80s to lower
90s. However, still could get heat indices creeping towards 100+
in DELMARVA and the southern urban corridor due to the high
dewpoints.

Short term 6 pm this evening through 6 am Friday
The low-lvl circulation clears the area this evening, with
westerly flow behind it helping to filter in somewhat drier air
over the area. This eventually will result in diminishing
convective coverage, with most activity squashed by 04-06z. The
low-lvls remain relatively moist so patchy fog low stratus will
again be a possibility (particularly in areas that receive
precipitation during the day), and may be more widespread than
this morning due to faster clearing of mid-lvl clouds.

Long term Friday through Wednesday
On Friday, a mid level ridge is forecast to extend from the
south central states all the way out to the western atlantic.

The ridge is expected to remain in place into Saturday. A trough
is anticipated to begin digging over the great lakes and the
northeastern states on Sunday and the ridge should begin to
divide. Part of the ridge is forecast to push farther our over
the atlantic for the new week while part of it retrogrades back
over the western states. The pattern will keep our region in the
oppressive heat and humidity into the weekend with a noticeable
change in conditions by Tuesday and Wednesday.

We will continue the excessive heat warning for the urban
corridor through Sunday evening. Heat index values will likely
approach 100 today and they should get above 105 on Friday,
Saturday and Sunday. Saturday afternoon should be the most
oppressive with heat index values exceeding 110 in many
locations.

The excessive heat watch will remain in effect from noon on
Friday into Sunday evening for the remainder of our region.

Those areas should experience a slight reprieve from the
excessive heat and humidity today before both return for Friday
and the weekend.

We are expecting only a slight chance of a shower or
thunderstorm from the poconos and the lehigh valley into
northern and central new jersey late on Friday. There is little
chance for any precipitation on Saturday.

A cold front will begin to approach from the northwest. A pre-
frontal trough is anticipated to arrive on Sunday and it may
trigger the development of showers and thunderstorms in the
afternoon. The showers and thunderstorms will be the first step
in breaking the excessive heat and humidity.

The slow moving cold front is forecast to arrive in our region
on Monday before it slips to our south on Tuesday. We will
continue to mention a chance of showers and thunderstorms
throughout our region for Monday, confining the chance to
northeastern maryland, delaware and southern new jersey on
Tuesday.

High pressure and dry weather are expected for Wednesday.

High temperatures should settle mainly into the 80s for Tuesday
and Wednesday.

Aviation 08z Thursday through Monday
The following discussion is for kphl, kpne, kttn, kabe, krdg,
kilg, kmiv, kacy and surrounding areas.

Today... A mixture of MVFRVFR conditions this morning will
transition to mostlyVFR after 12-13z. There will also be a
chance for lower flight categories this afternoon due to showers
and thunderstorms. Wind direction will be somewhat erratic
although speeds will generally be 5 kts or less outside of
thunderstorm outflows.

Tonight... Showers and thunderstorms should clear terminals by
about 03z and then a period of MVFR or even ifr conditions will
be possible overnight in fog stratus. Winds remain light and
variable.

Outlook...

Friday... Early morning visibility restrictions, otherwiseVFR.

Variable wind 5 knots or less, becoming southwest 5 to 10 knots.

Friday night... MainlyVFR with late night visibility
restrictions. Variable wind 5 knots or less.

Saturday... Early morning visibility restrictions, otherwise
vfr. Southwest to west wind 5 to 10 knots.

Saturday night... MainlyVFR with late night visibility
restrictions. Variable wind 5 knots or less.

Sunday... Early morning visibility restrictions, otherwiseVFR.

A chance of afternoon showers and thunderstorms. Southwest to
west wind 5 to 10 knots.

Sunday night... A chance of showers and thunderstorms with MVFR
or ifr conditions at times. Variable wind 5 knots or less.

Monday... A chance of showers and thunderstorms with MVFR or ifr
conditions at times. West to northwest wind 5 to 10 knots.

Marine
Sub-sca conditions are expected today and tonight although seas
may build to around 4 ft. Generally expect southerly winds
10-15 kts gusting to 20 kts or so. This afternoon into this
evening showers and thunderstorms will move into the waters and
potentially produce locally strong winds and higher seas.

Outlook...

Friday through Monday... No marine headlines are anticipated.

Rip currents...

with a decreasing period, expect that the risk for the
formation of dangerous rip currents will be low today.

A variable wind on Friday morning should become southerly
around 10 to 15 mph in the afternoon. Breaking waves around 2
feet are expected along with a medium period south to southeast
swell. There should be a low risk for the development of
dangerous rip currents on Friday.

Phi watches warnings advisories
Pa... Excessive heat watch from Friday afternoon through Sunday
evening for paz054-055-060>062-101-103-105.

Excessive heat warning until 10 pm edt Sunday for paz070-071-
102-104-106.

Nj... Excessive heat watch from Friday afternoon through Sunday
evening for njz001-007>010-012>014-016-020>027.

Excessive heat warning until 10 pm edt Sunday for njz015-
017>019.

De... Excessive heat watch from Friday afternoon through Sunday
evening for dez002>004.

Excessive heat warning until 10 pm edt Sunday for dez001.

Md... Excessive heat watch from Friday afternoon through Sunday
evening for mdz008-012-015-019-020.

Marine... None.

Synopsis... Iovino
near term... Carr
short term... Carr
long term... Iovino
aviation... Carr iovino
marine... Carr iovino


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RDYD1 - 8551910 - Reedy Point, DE 1 mi54 min 74°F 84°F1011.1 hPa
DELD1 - 8551762 - Delaware City, DE 1 mi60 min Calm G 1.9 76°F 81°F1011.6 hPa
CHCM2 - 8573927 - Chesapeake City, MD 12 mi54 min S 1 G 1.9 75°F 86°F1011.7 hPa
MRCP1 - 8540433 - Marcus Hook, PA 19 mi54 min 76°F 83°F1011.2 hPa
PHBP1 - 8545240 - Philadelphia, PA 35 mi54 min 75°F 81°F1011.1 hPa
BDSP1 39 mi54 min 76°F 82°F1011.9 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 43 mi54 min SE 4.1 G 6 78°F 85°F1011.4 hPa
BRND1 - 8555889 - Brandywine Shoal Light, DE 48 mi60 min 1012.5 hPa

Wind History for Delaware City, DE
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wilmington, New Castle County Airport, DE8 mi57 minS 510.00 miOvercast76°F73°F94%1011.7 hPa

Wind History from ILG (wind in knots)
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Last 24hrS6S6S4S5SW635W5W8SW7
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1 day agoCalmCalmCalmCalmS3S4SE5SE5SW4S5SE9S10SE9S9S10S10S5CalmCalmSE3SE4S4CalmS4
2 days agoN5CalmN6N7N744W83NW9
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Tide / Current Tables for Delaware City Branch Channel bridge, Delaware River, Delaware
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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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Chesapeake and Delaware Canal
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Thu -- 02:15 AM EDT     -2.25 knots Max Ebb
Thu -- 05:50 AM EDT     Sunrise
Thu -- 06:07 AM EDT     0.02 knots Slack
Thu -- 07:17 AM EDT     Moonset
Thu -- 09:03 AM EDT     2.27 knots Max Flood
Thu -- 12:47 PM EDT     -0.08 knots Slack
Thu -- 03:00 PM EDT     -1.50 knots Max Ebb
Thu -- 06:15 PM EDT     0.01 knots Slack
Thu -- 08:28 PM EDT     Sunset
Thu -- 09:02 PM EDT     1.78 knots Max Flood
Thu -- 09:51 PM EDT     Moonrise
Thu -- 11:19 PM EDT     -0.09 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.6-2-2.2-2.2-1.9-1.4-0.51.422.32.11.71.1-0.6-1.3-1.5-1.4-1-0.511.51.81.60.8

Weather Map and Satellite Images
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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 Philadelphia/Mount Holly, PA (4,6,7,8)
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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.