Sunday, December16, 2018 L-36.com


Marine Weather and Tides
Kennedyville, MD

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 7:15AMSunset 4:42PM Sunday December 16, 2018 10:05 PM EST (03:05 UTC) Moonrise 1:07PMMoonset 12:29AM Illumination 71% Phase: Waxing Gibbous; Moon at 9 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
    EDIT      (on/off)   Help
ANZ530 Chesapeake Bay North Of Pooles Island- 951 Pm Est Sun Dec 16 2018
.small craft advisory in effect until midnight est tonight...
.small craft advisory in effect from Monday morning through late Monday night...
Rest of tonight..NW winds 10 kt. Waves 1 ft.
Mon..NW winds 10 to 15 kt. Gusts up to 20 kt... Increasing to 30 kt in the afternoon. Waves 1 to 2 ft.
Mon night..NW winds 10 to 15 kt with gusts to 30 kt. Waves 2 ft.
Tue..NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Tue night..NW winds 5 kt. Waves less than 1 ft.
Wed..SW winds 5 to 10 kt. Waves 1 ft.
Wed night..S winds 5 kt. Waves less than 1 ft.
Thu..SE winds 10 to 15 kt. Waves 1 ft. Showers.
Fri..SW winds 10 to 15 kt. Waves 1 to 2 ft. Showers likely through the day, then a chance of showers through the night.
ANZ500 951 Pm Est Sun Dec 16 2018
Synopsis for the tidal potomac and md portion of the chesapeake bay.. Low pressure off the coast of new jersey will continue to move northeast and away from the region. A cold front approaching from the great lakes will cross the waters late Monday. High pressure will follow through Wednesday. Small craft advisories will likely be needed for portions of the waters Monday night through Tuesday. Gales will be possible late Monday afternoon and Monday evening.


7 Day Forecast for Marine Location Near Kennedyville, MD
   Hourly   EDIT   Help
location: 39.38, -75.97     debug


Area Discussion for - Philadelphia/Mount Holly, PA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kphi 170235
afdphi
area forecast discussion
national weather service mount holly nj
935 pm est Sun dec 16 2018

Synopsis
Low pressure will continue to move away from our area tonight as
high pressure begins building in from the west. High pressure will
persist through the middle of the week before moving offshore,
then an expansive and strong area of low pressure moves into the
region by the end of the week.

Near term until 6 am Monday morning
The winter weather advisory was allowed to expire at 9 pm. The
main wintry precipitation has ended, although some flurries or
a brief snow shower cannot be ruled out the rest of this
evening in the poconos. Otherwise, the closed low continues to
shift away from our coast taking the surface low with it.

Residual lift on the backside of these features continues to
rotate some rain showers into portions of coastal new jersey.

These are expected to shift offshore by midnight. Some mist or a
brief light rain shower may persist into the philadelphia metro
area for a few more hours before enough drying gets pulled farther
eastward. Plenty of clouds remain across the region, and these
may tend to stick around for much of the night.

For the 930 pm update, made some tweaks to the hourly temperature,
dew point and wind grids based on the latest observations and
trends. Adjusted the pops to show a faster decrease from west
to east given ongoing radar and hrrr trends. The persistent
cloud cover should limit radiational cooling.

Short term 6 am Monday morning through 6 pm Monday
The evening updates increased the wind and wind gusts especially
for the afternoon. Tightened pressure gradient combined with
deeper mixing will result in a gusty wind. The forecast soundings
show about 30 knots of wind available to mix down. These soundings
also show the potential for a decent amount of stratocumulus
occurring, and therefore increased the cloud cover south and eastward
through the afternoon. The increased cloud cover however could
lessen the deeper mixing, but overall a breezy day is expected.

Otherwise, strong northwest flow is expected on the backside of
the departing low. In addition, a mid level short wave trough
is expected to quickly dig SE along the northern portions of the
region. The combination of these factors could lead to some
snow showers reaching the southern poconos and northwest nj,
though the bulk of the activity will be north and west of our
region. Temperatures are expected to be near normal, with highs
ranging from the mid 30s to lower 50s.

Long term Monday night through Sunday
By late Tuesday, the building high pressure will continue to clear
things out across much of our area. Gusty winds from late Monday
will persist through the overnight hours and into early Tuesday
before relaxing Tuesday night as the high shifts just south of our
area. Winds could potentially gust over 30 mph early Tuesday
evening. Temps will fall into the mid to upper 20s Monday night with
radiational cooling being greatly suppressed due to a coupled
boundary layer and subsequent steady breeze overnight. Expecting
Tuesday to be an exceptionally clear, but chilly day with highs only
topping out in the upper 30s to low 40s. As winds diminish Tuesday
evening, temps will quickly fall into the 20s. Clear and cold will
remain the story Tuesday night with temps bottoming out in the low
to mid 20s by Wednesday morning. Fair weather is expected to
continue into Wednesday as high pressure pushes offshore with clouds
moving back into the region by later in the day and highs topping
out in the low to mid 40s. Not as cold Wednesday night with
increasing cloud cover and lows around normal for this time of year.

By early Thursday, a high amplitude upper trough will be digging
south across the southeastern us and gulf of mexico. A large, strong
area of low pressure is expected to develop across the southeastern
us on Thursday bringing the potential for some light rain showers
during the day with chances increasing into the late afternoon and
evening hours. This system appears to be warm enough to bring only
rain to our entire area at its onset.

This next storm system begins to move into the area Thursday
night into the day Friday. Not a whole lot of change in the
timing or placement of the system. Guidance seems to be
continuing agreement on the low moving up the appalachians ohio
river valley to our west during the Friday Saturday timeframe.

The GFS and ECMWF continue to forecast the development of a
well-defined synoptic trough over the eastern u.S. By Thursday.

Several factors including broad mid to upper-level diffluent
flow, appreciable positive vorticity advection, and a jet streak
located over the northeast canadian maritimes all support the
development of a strong extratropical cyclone. As noted in
previous discussions, this places us in the warm sector under
the influence of what appears to be fairly substantial warm air
advection ahead of the system. Bumped up highs Friday from
yesterdays forecast a few degrees-now ranging from the low 50s
across the poconos to near 60 across southern delaware. Friday
will likely have the feel of a spring day rather than that of
mid-december; take it or leave it as you see fit. Cooler as the
surface low begins to pull to the northeast out of our area
Saturday, returning us to northwest flow.

After a brief lull, additional precip is expected to wrap around the
surface low Saturday and early Sunday. As cold air advects into the
region, some of this could fall in the form of snow showers through
the northern half of the forecast area including the lehigh valley,
poconos, and NW new jersey. Highs Sunday will range form the low 30s
north to upper 40s south. Dry weather should return to most, if not
all the area Sunday night.

Aviation 03z Monday through Friday
The following discussion is for kphl, kpne, kttn, kabe, krdg,
kilg, kmiv, kacy and surrounding areas.

Tonight... Rain is coming to an end across the area, however, MVFR or
ifr ceilings will remain for much of the evening and overnight
hours. An improvement will occur for all sites through the overnight,
with some improving toVFR earlier, and others not until late in
the night.

Winds remain mostly out of the north to northwest around 10 knots,
with acy and miv even stronger winds and gusty around 20-25 knots
for a few more hours. Winds will shift more toward the northwest
overnight around 5-10 knots everywhere.

Monday... Conditions expected to start the day offVFR, with
increasing clouds through the afternoon. Abe and rdg may have their
ceilings lower to MVFR, while the rest of the area is expected to
remainVFR.

Northwesterly winds are expected to increase to 12-18 knots with
gusts to 25-30 knots, with the strongest winds during the afternoon.

Outlook...

Monday night... MostlyVFR conditions are expected. West to
northwesterly winds through may gust up to 25 kt through the
evening hours. A steady breeze is expected to last through the
overnight hours.

Tuesday through Tuesday night...VFR conditions expected. A steady
breeze is expected with northwesterly winds gusting up to 25 kt
during the day.

Wednesday and Wednesday night...VFR conditions expected with light
west to southwesterly winds.

Thursday through Friday...VFR expected early Thursday with scattered
rain showers increasing in coverage through the day. MVFR or ifr
possible Friday morning as heavier showers move across the area.

Southerly winds may gust up to 20 knots Friday.

Marine
Small craft advisory through tonight for all of the atlantic
coastal waters as low pressure gradually moves away. The small
craft advisory for delaware bay GOES through Monday night,
despite probably a lull in the winds for a time later tonight
before ramping back up again during Monday. It is possible this
may need to be upgraded to a gale warning at least for the lower
portion of the bay. Held onto the gale watch for now for the
atlantic coastal waters which starts Monday afternoon. Increased
the wave heights on the ocean based on current observations,
then slowed the decrease some through the evening.

Outlook...

Monday night... SCA conditions expected to continue with gale
force gusts possible.

Tuesday through Tuesday night... SCA conditions expected to last
through Tuesday evening with gale force gusts possible in the
morning, otherwise sub-sca conditions expected overnight Tuesday
night.

Wednesday through Wednesday night... Sub-sca expected.

Thursday through Friday... SCA conditions possible by late Thursday
night with southerly winds gusting near 25 knots and waves
increasing to 5-8 feet into Friday.

Phi watches warnings advisories
Pa... None.

Nj... None.

De... None.

Md... None.

Marine... Gale watch from Monday afternoon through Tuesday morning for
anz450>455.

Small craft advisory until 6 am est Monday for anz450>455.

Small craft advisory until 6 am est Tuesday for anz430-431.

Synopsis... Staarmann
near term... Gorse johnson
short term... Gorse johnson
long term... Davis staarmann
aviation... Davis gorse robertson staarmann
marine... Davis gorse staarmann


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHCM2 - 8573927 - Chesapeake City, MD 13 mi47 min NNW 5.1 G 8.9 41°F 43°F1011.4 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 19 mi47 min NW 13 G 16 41°F 44°F1012.2 hPa
RDYD1 - 8551910 - Reedy Point, DE 24 mi95 min 42°F 42°F
DELD1 - 8551762 - Delaware City, DE 25 mi47 min NNW 11 G 16 41°F 38°F1010.9 hPa
FSNM2 31 mi53 min NNW 15 G 19 42°F 1011.6 hPa
SJSN4 - 8537121 - Ship John Shoal, NJ 32 mi47 min NNW 19 G 21 40°F 43°F1010 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 32 mi47 min NW 12 G 14 42°F 1012.1 hPa
BLTM2 - 8574680 - Baltimore, MD 33 mi53 min N 8.9 G 13 42°F 44°F1012 hPa
CPVM2 35 mi47 min 42°F 42°F
APAM2 - 8575512 - Annapolis, MD 38 mi47 min 42°F 1011.8 hPa
TPLM2 - Thomas Point, MD 41 mi65 min WNW 12 G 14 41°F 42°F1013.2 hPa (+1.1)39°F
MRCP1 - 8540433 - Marcus Hook, PA 42 mi53 min 40°F 45°F1010.5 hPa

Wind History for Chesapeake City, MD
(wind in knots)    EDIT      (on/off)   Help
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
Last
24hr
E13
G18
E12
G17
E14
G21
E12
G20
E12
G19
E13
G16
NE10
G13
E16
G20
E16
G23
E13
G17
E14
E9
G13
E9
G13
NE6
G12
NE8
G12
N6
G10
N5
G10
N8
G11
N6
G9
N7
G11
N8
G14
N5
G9
NW7
G11
N6
G11
1 day
ago
E3
E2
NE1
E1
NE1
NE2
E5
NE4
G7
E5
NE5
G8
NE4
NE5
G8
NE7
G12
NE9
NE8
G11
NE5
G10
NE9
G14
E9
G16
E10
G14
E12
G15
NE8
G13
NE6
G11
E13
G17
NE12
G17
2 days
ago
E3
E3
E2
NE1
G4
E2
G5
E1
--
E2
E2
--
E1
E3
E5
E3
E2
SE2
SE1
G4
E3
E3
E4
--
--
--
E2

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Baltimore / Martin, MD24 mi2.3 hrsNW 810.00 miOvercast43°F39°F87%1012.5 hPa

Wind History from APG (wind in knots)
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
Last 24hr------------------CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm--CalmCalm
1 day ago------------------CalmCalmCalmCalmCalmCalmCalmCalmCalm--CalmCalmCalmCalmCalm
2 days agoCalmCalmNW3SW3CalmCalmCalmCalmCalmCalmCalm--CalmCalmCalmCalmCalm3CalmCalmCalmCalm--Calm

Tide / Current Tables for Betterton, Maryland
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Betterton
Click for Map
Sun -- 12:30 AM EST     Moonset
Sun -- 02:59 AM EST     1.49 feet High Tide
Sun -- 07:17 AM EST     Sunrise
Sun -- 09:41 AM EST     -0.06 feet Low Tide
Sun -- 01:07 PM EST     Moonrise
Sun -- 03:53 PM EST     1.26 feet High Tide
Sun -- 04:42 PM EST     Sunset
Sun -- 09:52 PM EST     0.30 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
0.91.21.41.51.41.10.80.50.2-0-0.10.10.30.711.21.31.210.70.50.30.30.4

Tide / Current Tables for Chesapeake and Delaware Canal, Maryland/Delaware Current
   EDIT      (on/off)   Help   One Week of Data
Chesapeake and Delaware Canal
Click for Map
Sun -- 12:28 AM EST     Moonset
Sun -- 01:16 AM EST     2.00 knots Max Flood
Sun -- 03:57 AM EST     -0.09 knots Slack
Sun -- 07:04 AM EST     -1.79 knots Max Ebb
Sun -- 07:17 AM EST     Sunrise
Sun -- 10:23 AM EST     0.06 knots Slack
Sun -- 01:06 PM EST     Moonrise
Sun -- 01:43 PM EST     1.78 knots Max Flood
Sun -- 04:06 PM EST     -0.08 knots Slack
Sun -- 04:40 PM EST     Sunset
Sun -- 07:17 PM EST     -1.76 knots Max Ebb
Sun -- 10:09 PM EST     0.07 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
1.721.91.4-0.3-1.3-1.6-1.8-1.7-1.3-0.60.71.31.71.81.40.4-1.2-1.6-1.7-1.7-1.3-0.41

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Philadelphia/Mount Holly, PA (22,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Dover AFB, DE
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.