Monday, October14, 2019 L-36.com


Marine Weather and Tides
Rehoboth Beach, DE

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:08AMSunset 6:27PM Monday October 14, 2019 6:57 AM EDT (10:57 UTC) Moonrise 6:13PMMoonset 6:38AM Illumination 99% Phase: Full Moon; Moon at 15 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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ANZ454 Coastal Waters From Cape May Nj To Cape Henlopen De Out 20 Nm- Coastal Waters From Cape Henlopen To Fenwick Island De Out 20 Nm- 647 Am Edt Mon Oct 14 2019
Today..NW winds 5 to 10 kt, becoming sw late. Seas 3 to 4 ft. SWell mainly from the E with a dominant period of 10 seconds. A chance of showers early this morning.
Tonight..W winds 5 to 10 kt, becoming nw after midnight. Seas around 3 ft. SWell mainly from the E with a dominant period of 10 seconds.
Tue..NE winds 5 to 10 kt, becoming E late. Seas around 3 ft until late afternoon, then 2 ft or less. SWell mainly from the E with a dominant period of 10 seconds.
Tue night..SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt late. Seas 2 ft or less. SWell mainly from the E with a dominant period of 9 seconds.
Wed..S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Rain.
Wed night..W winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to 6 ft. Rain in the evening, then a chance of showers after midnight.
Thu..W winds around 25 kt with gusts up to 35 kt. Seas 4 to 6 ft.
Thu night..NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft.
Fri..NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft.
Fri night..NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 3 ft in the evening, then 2 ft or less.
ANZ400 647 Am Edt Mon Oct 14 2019
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. A weak cold front will move across the area today. High pressure will build in tonight and remain nearby through Tuesday. Two weather systems will approach on Wednesday, one a low pressure tracking out of the great lakes and the other a wave of moisture coming out of the gulf states. These two systems will phase into a powerful storm that will impact the region Wednesday and Wednesday night. The storm will move away on Thursday with blustery conditions lingering. High pressure will build in for the end of the week and next weekend.


7 Day Forecast for Marine Location Near Rehoboth Beach, DE
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location: 38.72, -75.08     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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Fxus61 kphi 140729
afdphi
area forecast discussion
national weather service mount holly nj
329 am edt Mon oct 14 2019

Synopsis
A weak cold front will move across the area today. High pressure
will build in tonight and remain nearby through Tuesday. Two weather
systems will approach on Wednesday, one a low pressure tracking out
of the great lakes and the other a wave of moisture coming out of
the gulf states. These two systems will phase into a powerful storm
that will impact the region Wednesday and Wednesday night. The storm
will move away on Thursday with blustery conditions lingering. High
pressure will build in for the end of the week and next weekend.

Near term until 6 pm this evening
The front and weak area of low pressure that caused the rain showers
across the SE areas last night will continue to move offshore early
this morning. In its wake, low clouds and areas of fog have
developed across many areas. Patchy drizzle is also being observed
in a few areas. This low level moisture will diminish this morning
as high pressure begins to work its way towards the area. The clouds
will thin out across the NW areas first, then across the coastal
plain later this morning. The afternoon will be mostly sunny in all
areas.

High temperatures today should reach the low mid 70s in many areas
with some upper 60s across the far N w. Winds will be mostly west to
southwest at 5 to 10 mph.

Short term 6 pm this evening through 6 am Tuesday
A weak cold front will cross the area this evening before high
pressure arrives from the W tonight. Clear skies and cool
temperatures are expected. Lows will drop into the upper 30s low 40s
across the north and into the mid upper 40s for DELMARVA and SRN nj.

Winds will be from the NW to N around 5 mph overnight. A little
patchy valley fog is possible.

Long term Tuesday through Sunday
Overview...

no significant changes in thinking for the coming week. We start on
Tuesday beneath an area of high pressure which will yield a pleasant
fall day. The one weather system in the long term will impact us on
Wednesday and into early Thursday. Guidance continues to indicate
the potential for a strong but quick moving storm system to impact
us during that time. By the end of the week and next weekend, we
revert back to a pattern we saw a lot of in august and september.

That is, one of east coast ridging and surface high pressure which
should grace us with a lengthy stretch of dry and warmer than normal
weather once the midweek storm departs.

Dailies...

Tuesday-Tuesday night... Surface high pressure will be almost
directly overhead for most of Tuesday, before starting to shift off
to the east late. We see some weak CAA during the day thanks to a
trough to the north, so highs will be a little cooler than Monday,
mainly in the mid to upper 60s. Dry conditions, plenty of sun, and
light winds expected. Lowered mins a couple degrees Tuesday night as
believe we may fall rather quickly early in the night while we still
have partly to mostly clear skies.

Wednesday-Wednesday night... The most active part of the week, as
two weather systems approach and phase into what should become a
powerful storm. Dynamically, it is an impressive setup at mid and
upper levels, and guidance has been consistent for several days in
the overall evolution of events, with only minor differences in
timing and the tracks of the northern and southern stream pieces.

The northern stream frontal system over the great lakes should
eventually be absorbed by the developing low along the wave of
moisture coming up from the south. Main question will be just how
much rain we get, which will depend on the tracks of the features
and the timing of their phasing. As previous forecaster noted, most
of our rain will be due to warm advection and low level fgen on
Wednesday afternoon and evening. Given the dynamics, a period of
steady moderate rain appears probable. Not especially confident on
qpf and did not change the previous forecast too much; expecting
near an inch of rain but there will be some local variations. The
overnight runs of the ec and the gem both show much higher totals
with widespread amounts over two inches. The southern stream wave
coming out of the gulf states certainly has plenty of moisture with
it, so if that wave tracks a little farther north like those models
show then we could end up with heavier rain. We will dry out
Wednesday night, though the theme in the 0z guidance overnight was
to delay both precip arrival and departure by a few hours. Lows
falling back into the mid to upper 40s as NW flow kicks in, though
if the slower trend continues may have to adjust mins up.

Thursday-Thursday night... The upper level pattern is progressive,
so the Wednesday storm system will pull away into the maritimes on
Thursday. Dry conditions will return though cannot rule out some
cold advection showers to the northwest. As the low pressure
intensifies to our north, high pressure will be building in behind
it, and that will set up a sharp pressure gradient on Thursday.

Gusty northwest winds are expected. In fact, some bufkit profiles
suggest we have a chance at advisory level gusts, and we would
probably be a little lenient on criteria in this case given fully
leafed trees. Strong CAA behind the departing low will lead to a
chilly day with highs struggling to crack 60 and a cooler feel due
to the wind. 850mb temperatures dip to near 0c just about
everywhere. While the overnight will also be on the cool side, we
should avoid too much of a tumble thanks to the winds, which will be
diminishing but still steady overnight.

Friday-Sunday... Guidance agrees on an expansive ridge developing
over the east, something we saw a lot of in the late summer and
early fall. The result will be several days of dry weather with
temperatures steadily moderating after the Thursday chill. We should
be back in the low 70s by late in the weekend or early next week.

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

Today... Low clouds and areas of fog (mostly ifr) early this morning
then improvement toVFR after 12z 13z west and 14z 15z south east.

Winds will become W to NW and increase to 5 to 10 knots for much of
the day.

Tonight... High pressure will move overhead soVFR expected with
light winds. The dry airmass should preclude widespread fog
formation. A little across the rural areas possible. We'll not put
it in the tafs ATTM with low confid of it occurring.

Outlook...

Tuesday-Tuesday night... VFR. Light and variable wind Tuesday
becoming light southeasterly overnight. High confidence.

Wednesday-Wednesday night... InitiallyVFR on Wednesday morning, but
conditions deteriorating during the late morning and especially
afternoon and evening. MVFR ifr likely. Winds will be increasing and
also erratic in direction. Initially southeasterly winds should turn
southerly then southwesterly during the afternoon. A sharp shift to
west-northwest is likely during the evening. Gusts of 20 to 25 kt
are possible by evening. Llws may be a concern Wednesday afternoon
and evening as well. Conditions should gradually return to
vfr later in the night, especially after 6z. Moderate confidence.

Thursday-Thursday night... MainlyVFR. Windy, with west-northwest
winds of 15 to 20 kt potentially gusting over 30 kt during the day
Thursday. Northwest winds will diminish Thursday evening and
especially overnight. High confidence.

Friday... VFR. NW winds around 10 kt with gusts up to 20 kt. High
confidence.

Marine
Low pressure that was across the waters Sunday evening will continue
to move away today. A weak cold front will cross the waters this
evening before high pressure approaches from the west later tonight.

Winds and seas will remain below SCA conditions thru the period.

There may be some fog across the waters this morning, but then fair
weather is expected this afternoon and tonight. Winds will shift to
w SW later today, then shift to NW behind the front tonight.

Outlook...

Tuesday-Tuesday night... Sub-sca conditions expected. Seas 2 to 3
ft. Light and variable winds becoming southeasterly at 10 to 15 kt
overnight.

Wednesday-Friday... Marine headlines are likely most of this period
due to a storm system. Winds and seas likely build to SCA levels
Wednesday morning or early afternoon. West-northwesterly gales
appear likely Wednesday night and Thursday. Seas building 4 to 7 ft.

Gales subsiding to SCA levels Thursday night with seas also
diminishing. By Friday morning, conditions should subside to sub-sca
levels though gusts around 20 kt remain possible.

Phi watches warnings advisories
Pa... None.

Nj... None.

De... None.

Md... None.

Marine... None.

Synopsis... O'brien
near term... O'hara
short term... O'hara
long term... O'brien
aviation... O'brien o'hara
marine... O'brien o'hara


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LWSD1 - 8557380 - Lewes, DE 5 mi63 min NW 5.1 G 5.1 63°F 65°F1014.7 hPa
CMAN4 - 8536110 - Cape May, NJ 18 mi63 min NNW 1.9 G 2.9 63°F 64°F1014.3 hPa
BRND1 - 8555889 - Brandywine Shoal Light, DE 19 mi63 min 1015.2 hPa
OCSM2 26 mi177 min 2 ft
44009 - DELAWARE BAY 26 NM Southeast of Cape May, NJ 27 mi67 min W 7.8 G 12 66°F 67°F3 ft1014.1 hPa (-0.0)
OCIM2 - 8570283 - Ocean City Inlet, MD 27 mi63 min NNW 6 G 7 65°F 65°F1015.5 hPa
SJSN4 - 8537121 - Ship John Shoal, NJ 43 mi63 min W 5.1 G 6 61°F 68°F1015.7 hPa

Wind History for Lewes, DE
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Georgetown - Delaware Coastal Airport, DE15 mi63 minN 07.00 miOvercast63°F62°F97%1014.7 hPa
Wildwood, Cape May County Airport, NJ22 mi61 minN 010.00 miOvercast62°F61°F96%1015.2 hPa

Link to 5 minute data for KGED

Wind History from GED (wind in knots)
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Last 24hrN4N45N4E45E7E7E4E9E9SE8E4SE45S6S4S7SW3S4NW4NW3CalmCalm
1 day agoCalmCalmCalm34NW756N4NW4NW7E6E3CalmCalmCalmCalmCalmCalmCalmN4N4N4N3
2 days agoN6N5NE10
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NE8NE8NE7NE5NE4NE6N3N3NW3NW3NW3NW3CalmCalm

Tide / Current Tables for Rehoboth Beach, Delaware
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Rehoboth Beach
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Mon -- 02:26 AM EDT     0.04 feet Low Tide
Mon -- 07:08 AM EDT     Sunrise
Mon -- 07:38 AM EDT     Moonset
Mon -- 08:40 AM EDT     4.47 feet High Tide
Mon -- 02:56 PM EDT     0.17 feet Low Tide
Mon -- 06:23 PM EDT     Sunset
Mon -- 07:12 PM EDT     Moonrise
Mon -- 08:59 PM EDT     4.20 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.50.60.10.10.81.933.84.44.44321.10.40.20.51.42.53.444.23.93.1

Tide / Current Tables for Delaware Bay Entrance, Delaware Current
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Delaware Bay Entrance
Click for Map
Mon -- 02:06 AM EDT     -1.34 knots Max Ebb
Mon -- 04:53 AM EDT     0.00 knots Slack
Mon -- 07:08 AM EDT     Sunrise
Mon -- 07:37 AM EDT     Moonset
Mon -- 07:55 AM EDT     1.39 knots Max Flood
Mon -- 11:07 AM EDT     -0.00 knots Slack
Mon -- 02:32 PM EDT     -1.39 knots Max Ebb
Mon -- 05:24 PM EDT     0.00 knots Slack
Mon -- 06:23 PM EDT     Sunset
Mon -- 07:12 PM EDT     Moonrise
Mon -- 08:21 PM EDT     1.34 knots Max Flood
Mon -- 11:26 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.7-1.1-1.3-1.2-0.60.10.71.21.41.20.70.1-0.6-1-1.3-1.3-0.9-0.30.411.31.30.90.3

Weather Map
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Wind Forecast for Philadelphia/Mount Holly, PA (6,6,7,8)
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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.