Friday, March22, 2019 L-36.com


Marine Weather and Tides
Lewes, DE

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 7:00AMSunset 7:16PM Friday March 22, 2019 2:04 AM EDT (06:04 UTC) Moonrise 8:18PMMoonset 7:16AM 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
    EDIT      (on/off)   Help
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- 1218 Am Edt Fri Mar 22 2019
.gale warning in effect through Saturday afternoon...
Rest of tonight..SW winds 15 to 20 kt, becoming W 20 to 25 kt late. Gusts up to 30 kt. Seas 8 to 10 ft. SWell mainly from the se with a dominant period of 10 seconds. Rain likely. Areas of fog. Vsby 1 to 3 nm.
Fri..W winds 25 to 30 kt, diminishing to 20 to 25 kt in the afternoon. Gusts up to 40 kt. Seas 7 to 10 ft, subsiding to 4 to 7 ft in the afternoon. SWell mainly from the se with a dominant period of 9 seconds. Areas of fog early in the morning. A chance of rain early in the morning, then a chance of showers in the late morning and afternoon. Vsby 1 to 3 nm early in the morning.
Fri night..W winds 25 to 30 kt with gusts up to 45 kt. Seas 4 to 7 ft. SWell mainly from the E with a dominant period of 11 seconds.
Sat..NW winds 25 to 30 kt, diminishing to 20 to 25 kt late. Gusts up to 40 kt. Seas 4 to 7 ft, subsiding to 3 to 5 ft late. SWell mainly from the E with a dominant period of 11 seconds.
Sat night..NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 4 ft.
Sun..W winds 10 to 15 kt with gusts up to 20 kt, becoming sw in the afternoon. Seas 2 ft or less.
Sun night..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 ft or less, then around 3 ft after midnight.
Mon..SW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 3 to 4 ft.
Mon night..W winds 10 to 15 kt with gusts up to 20 kt, becoming ne 15 to 20 kt with gusts up to 30 kt after midnight. Seas 3 to 5 ft. A chance of showers in the evening, then a chance of rain and snow showers after midnight.
Tue..NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. A chance of rain and snow showers in the morning. Vsby 1 to 3 nm.
Tue night..NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft.
ANZ400 1218 Am Edt Fri Mar 22 2019
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. Low pressure will strengthen as it moves northeast through the mid- atlantic region tonight and into new england on Friday. Behind the low, a cold front will cross our region on Friday. Over the weekend, the low will move farther away into the canadian maritimes, while high pressure will build in from the great lakes on Saturday and then shift to our south on Sunday. A cold front is forecast to cross the area on Monday, followed by high pressure for much of the remainder of next week.


7 Day Forecast for Marine Location Near Lewes, DE
   Hourly   EDIT   Help
location: 38.78, -75.12     debug


Area Discussion for - Philadelphia/Mount Holly, PA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kphi 220431
afdphi
area forecast discussion
national weather service mount holly nj
1231 am edt Fri mar 22 2019

Synopsis
Low pressure will strengthen as it moves northeast through the
mid- atlantic region tonight and into new england on Friday.

Behind the low, a cold front will cross our region on Friday.

Over the weekend, the low will move farther away into the
canadian maritimes, while high pressure will build in from the
great lakes on Saturday and then shift to our south on Sunday. A
cold front is forecast to cross the area on Monday, followed by
high pressure for much of the remainder of next week.

Near term until 6 am this morning
The center of low pressure is currently over delaware
bay extreme southern nj and will continue to lift to the
northeast through daybreak Friday. The heaviest of the rain
seems to be winding down, but with all the rain that fell across
the region, it will not take much additional rainfall to result
in street and small stream flooding. Will keep flood watch up
through the late night hours. Some snow is possible across the
highest elevations of the southern poconos late.

There may be some locally dense fog across southern nj as the
low passes overhead.

Short term 6 am this morning through Sunday
The low will continue to deepen through Friday as it moves ne
through new england. Main concern for Friday and beyond will be
strong winds on the backside of the system due to the strong
pressure gradient, deep mixing, and cold advection pattern.

Friday morning may end up mainly dry before a strong shortwave
associated with the main upper level low drops S E into the
area. This will result in scattered showers redeveloping that
could continue to be mixed with some snow across higher
elevations in the southern poconos. Otherwise main focus will be
on the winds. Winds will ramp up through the day and expect by
mid to late afternoon W NW winds will be 15 to 25 with gusts of
at least 30 to 40 mph. Winds will likely be even stronger for a
time Friday night. Highs Friday will range from the upper 30s to
mid 40s over the southern poconos and NW nj to the upper 40s to
low 50s elsewhere.

Friday night... Secondary cold front crosses the area early in the
evening potentially resulting in a surge of stronger wind gusts.

Profiles indicate 40 to 50 knot winds in the boundary layer but
limiting factor for full mixing will be loss of heating with the
diurnal cycle. Nevertheless, still think there will be a good
potential for wind gusts at least 35 to 45 mph to be realized across
much of the area so wind advisory may end up be needed. Otherwise,
except for some scattered snow showers continuing in the southern
poconos conditions should become mainly dry. Lows by Saturday
morning will range from the 20s across the southern poconos and nw
nj to the low to mid 30s elsewhere.

For Saturday, the low pulls away into the canadian maritimes with
strong NW winds continuing in its wake as high pressure moves into
the ohio valley keeping a tight gradient over the area. Otherwise it
will be dry but seasonably cool under mainly sunny skies.

High pressure moves in for Saturday night and Sunday resulting in
winds finally diminishing with temperatures returning to
seasonable by Sunday afternoon under continuing mainly clear
skies.

Long term Sunday night through Thursday
This extended forecast period will start out with a fairly strong
cold front passage on Monday, followed by canadian high pressure for
Tuesday through Thursday. On Monday a shortwv trof is forecast to
move east into the ohio valley with moisture spreading ahead of it
across the mid-atlantic region. Both the latest GFS and ecmwf
are showing precip spreading across the area on Monday and
continuing into Monday night in association with this feature
and with the frontal passage.

Temperatures ahead of the front on Monday should be warm enough for
rain everywhere, but fairly strong cold advection behind the front
may result in precip changing to snow from north to south Monday
night. No significant snow accumulation is expected at this time.

Temperatures on Tuesday and Wednesday look to be a bit below normal,
but may moderate to near normal again by Thursday.

Aviation 06z Friday through Tuesday
The following discussion is for kphl, kpne, kttn, kabe, krdg,
kilg, kmiv, kacy and surrounding areas.

Through tonight... Low pressure will intensify as it moves
northeast through coastal de and nj tonight. CIGS will
generally range between low MVFR and ifr. Vsbys will lower in
areas of heavier rainfall. Precip should end from south to north
during the early overnight, but CIGS will remain mostly ifr
overnight. Winds will veer from ene to NW with the passage of
the low
Friday... Conditions should improve toVFR by mid-morning but nw
winds will likely gust 25 to 30 kt during day. Brief local MVFR
conditions are possible in scattered showers.

Outlook...

Friday night and Saturday...VFR conditions expected but NW winds
will continue to gust 30 to 35 kt.

Saturday night through Sunday night...VFR conditions with winds
generally 10 kt or less.

Monday and Monday night... MVFR countdowns possible in areas of
rain or snow showers. Winds around 10 kt shifting from SW to n
on Monday.

Tuesday...VFR conditions with NE winds around 10 kt.

Marine
A gale warning remains in effect for all waters, though there is
a lull in the gales that should last into daybreak, then
northwest winds will crank up once again to above gale force
through Friday.

Outlook...

Friday night and Saturday... Northwesterly gales continue for
much of this period, but wind speeds should gradually drop off
late Saturday into Saturday night.

Sunday into Monday... Winds and seas are expected to be below
small craft advisory conditions.

Monday night and Tuesday... Northeasterly winds are likely to
increase starting Monday night and continuing into Tuesday. Seas
should subsequently increase as well.

Hydrology
During the last 24 hours, forecast models have been trending
upward with their qpf, especially across SE pa. The 72 hour
precip forecast, out of the marfc, now has a large swath of 1.50
to 3.00 inches of rainfall across the southern poconos, berks
county, the lehigh valley, the philly suburbs, and NW nj.

As a result, our river stream forecast points are responding.

We now have about a dozen gages in at least caution action
stage. While we will see a significant response across nj, SE pa
has a greater chance to see water over banks. Across the
intricate passaic basin in northern nj, there are about 5 gages
now forecast to climb above caution stage. If the heaviest
rainfall expands east into this area, minor flooding would then
be expected. The millstone river in the raritan basin could also
see some minor flooding.

With the heaviest rainfall expected across SE pa, this is where we
are seeing the most significant rises. Portions of the schuylkill
and brandywine are now expected to flood. The smaller creeks and
streams across SE pa and across northern delaware will also see
levels approach or exceed bankfull. Additionally, the perkiomen
creek, the neshaminy creek and portions of the lehigh system,
especially the headwaters of the little lehigh need to be monitored.

In terms of timing, the heaviest rains will fall between 18z today
and 06z tonight. Poor drainage and low-lying flooding, like it
always does, will initiate first. That will start to develop this
afternoon. This rain runoff will move into fast responding creeks
this evening. That water will then bleed into the larger rivers and
streams overnight.

If the rainfall and the flooding comes to fruition, I would
expected river flooding to persist across SE pa through at least
Friday. The passaic basin in nj responds more slowly. Any
flooding that might develop there will be slower to do so and
most likely last into the weekend.

Tides coastal flooding
No changes to the coastal flood warnings advisories have been
made with the general expectation that widespread minor coastal
flooding will occur with this evening's high tide. Local
moderate flooding may be observed in coastal locations of
middlesex and monmouth counties, though stevens institute
ensemble guidance is indicating the more likely outcome is for
levels just under moderate flood stage in most locations.

In the advisory area of coastal new jersey and delaware, concern
is increasing for somewhat higher levels than guidance is
currently suggesting. Winds have been stronger than expected
this afternoon, with gale-force gusts occurring on delaware bay
and the atlantic waters for the past couple of hours. Models
have trended a little higher with projected gauge levels this
evening, and this makes sense owing to recent conditions. Though
widespread minor flooding is the more likely outcome in these
areas, some spotty instances of moderate flooding cannot be
ruled out. Minor flooding is also expected on the tidal
delaware river overnight.

Additionally, the slowing trend of the associated coastal low
with today's model runs leads to somewhat increased potential of
another round of minor flooding for Friday morning's high tide,
especially on the new jersey coast. If current trends continue,
additional advisories for this high tide will be required.

Strong offshore flow will commence on Friday, which will end
the coastal flooding threat for subsequent high tides.

No flooding is expected on the upper eastern shore of
chesapeake bay.

Phi watches warnings advisories
Pa... Flood watch until 6 am edt early this morning for paz060>062-
070-071-101>106.

Coastal flood advisory until 6 am edt early this morning for
paz070-071-106.

Nj... Flood watch until 6 am edt early this morning for njz007>010-
012-015>019.

Coastal flood advisory until 1 am edt early this morning for
njz020>027.

Coastal flood advisory until 2 am edt early this morning for
njz016.

Coastal flood advisory until 6 am edt early this morning for
njz015-017>019.

Coastal flood warning until 2 am edt early this morning for
njz012>014.

De... Flood watch until 6 am edt early this morning for dez001.

Coastal flood advisory until 1 am edt early this morning for
dez002>004.

Coastal flood advisory until 2 am edt early this morning for
dez001.

Md... Flood watch until 6 am edt early this morning for mdz008-012.

Marine... Gale warning until 6 pm edt Saturday for anz430-431-450>455.

Synopsis... Amc
near term... Fitzsimmons johnson mps
short term... Fitzsimmons
long term... Amc
aviation... Amc mps
marine... Amc johnson mps
hydrology...

tides coastal flooding...



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
LWSD1 - 8557380 - Lewes, DE 0 mi34 min WSW 9.9 G 15
BRND1 - 8555889 - Brandywine Shoal Light, DE 14 mi34 min 993.8 hPa
CMAN4 - 8536110 - Cape May, NJ 16 mi34 min E 2.9 G 4.1 45°F 45°F992.9 hPa
44009 - DELAWARE BAY 26 NM Southeast of Cape May, NJ 31 mi74 min 44°F10 ft994.8 hPa (-3.0)
OCIM2 - 8570283 - Ocean City Inlet, MD 31 mi34 min W 17 G 27
SJSN4 - 8537121 - Ship John Shoal, NJ 39 mi34 min N 5.1 G 7 48°F 45°F993.6 hPa

Wind History for Lewes, DE
(wind in knots)    EDIT      (on/off)   Help
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
12
AM
1
AM
Last
24hr
E7
SE6
E10
SE10
G14
E13
G16
E13
G17
E14
G20
E13
G20
SE13
G18
SE17
G23
SE13
G19
SE16
G24
SE12
G16
E17
SE14
G19
E13
G17
E21
G31
SE17
G25
E25
G31
SE14
G23
SE14
G18
SE6
--
SW9
G14
1 day
ago
S3
W1
--
--
--
E2
E1
E6
NE8
E8
E9
NE8
E10
E11
E12
E11
E11
G14
E9
E8
E7
SE4
SE5
SE4
E4
2 days
ago
W5
NW4
G7
N11
NE14
NE13
G16
NE11
NE10
E10
E11
E8
NE6
E2
E9
SE6
SE6
S4
S4
S3
SW2
S3
S3

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Georgetown - Delaware Coastal Airport, DE14 mi70 minSW 145.00 miFog/Mist49°F45°F86%994.6 hPa
Wildwood, Cape May County Airport, NJ20 mi69 minSSE 40.50 miLight Rain Fog46°F45°F96%994.7 hPa

Wind History from GED (wind in knots)
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
12
AM
1
AM
Last 24hrE5E6E10E9E8E8E6E8SE8SE7E11SE10SE10
G16
E15
G24
E18
G24
E14E13
G24
SE13
G20
SE13
G24
--SE5SE4SW8SW14
1 day agoCalmCalmCalmCalmCalmCalmCalmNE3E7E13
G18
E13SE14SE9
G18
E10
G16
E12SE9E8E7E5E6E4E3E5E5
2 days agoNW3CalmCalmCalmCalmNW3N4N6N10NE11
G15
NE4NE6556NE6E7SE7SE3SE3CalmCalmCalmCalm

Tide / Current Tables for Breakwater Harbor, Delaware
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Breakwater Harbor
Click for Map
Fri -- 04:07 AM EDT     -0.89 feet Low Tide
Fri -- 07:01 AM EDT     Sunrise
Fri -- 08:16 AM EDT     Moonset
Fri -- 10:31 AM EDT     5.04 feet High Tide
Fri -- 04:30 PM EDT     -0.71 feet Low Tide
Fri -- 07:14 PM EDT     Sunset
Fri -- 09:18 PM EDT     Moonrise
Fri -- 10:53 PM EDT     5.11 feet High 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
3.82.40.8-0.4-0.9-0.60.31.63.14.34.954.33.11.60.2-0.6-0.60.11.22.63.94.85.1

Tide / Current Tables for Delaware Bay Entrance, Delaware Current
   EDIT      (on/off)   Help   One Week of Data
Delaware Bay Entrance
Click for Map
Fri -- 02:54 AM EDT     -1.88 knots Max Ebb
Fri -- 05:45 AM EDT     0.00 knots Slack
Fri -- 07:00 AM EDT     Sunrise
Fri -- 08:15 AM EDT     Moonset
Fri -- 08:39 AM EDT     2.00 knots Max Flood
Fri -- 11:52 AM EDT     -0.00 knots Slack
Fri -- 03:21 PM EDT     -1.87 knots Max Ebb
Fri -- 06:13 PM EDT     0.00 knots Slack
Fri -- 07:13 PM EDT     Sunset
Fri -- 09:05 PM EDT     1.95 knots Max Flood
Fri -- 09:17 PM EDT     Moonrise
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
-0.5-1.2-1.7-1.9-1.5-0.70.21.21.921.50.8-0.1-0.9-1.5-1.8-1.7-1.1-0.20.81.61.91.71.1

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 (2,6,7,8)
      (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.