Marine Weather and Tides
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
|Sunrise 6:34AM||Sunset 7:53PM||Sunday April 22, 2018 2:54 AM EDT (06:54 UTC)||Moonrise 11:24AM||Moonset 12:48AM||Illumination 44%|
EDIT (on/off)  Help
|AMZ254 Coastal Waters From Little River Inlet To Murrells Inlet Sc Out 20 Nm- 916 Pm Edt Sat Apr 21 2018 |
.small craft advisory in effect from late Sunday night through Wednesday morning...
Overnight..E winds 10 to 15 kt. Seas 2 to 3 ft.
Sun..E winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 3 ft.
Sun night..E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft, building to 3 to 5 ft after midnight. A chance of showers.
Mon..E winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Seas 5 to 7 ft, building to 5 to 8 ft in the afternoon. Showers.
Mon night..E winds 25 to 30 kt. Seas 7 to 10 ft, building to 8 to 11 ft after midnight. Showers with isolated tstms.
Tue..SE winds 15 to 20 kt, becoming S 10 to 15 kt in the afternoon. Gusts up to 30 kt. Seas 7 to 10 ft, subsiding to 5 to 8 ft in the afternoon. Showers likely.
Tue night..SW winds 10 kt with gusts up to 20 kt. Seas 4 to 7 ft. A chance of showers.
Wed..W winds 10 kt. Seas 4 to 6 ft, subsiding to 3 to 5 ft.
Thu..W winds 10 kt. Seas 2 to 4 ft. A chance of showers through the day. Winds and seas higher in and near tstms.
|AMZ200 916 Pm Edt Sat Apr 21 2018 |
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. Canadian high pressure will remain just to our north through Sunday. Low pressure will move slowly across the area Monday and Tuesday. The low will slowly move northeast and away from the region on Wednesday as high pressure builds in from the west.
7 Day Forecast for Marine Location Near Sunset Beach, NCHourly EDIT Help
Area Discussion for - Wilmington, NC  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus62 kilm 220535|
area forecast discussion
national weather service wilmington nc
135 am edt Sun apr 22 2018
Canadian high pressure will continue to extend into the
carolinas as it migrates slowly east off the mid-atlantic coast
through Sunday. Slow moving low pressure will cross the
southeastern u.S. Monday through Wednesday, bringing widespread
rainfall with continued below-normal temperatures. Another
system may affect the carolinas Thursday into Friday.
Near term through today
As of 1000 pm Saturday... Cooling temps have outpaced the temp
curve in many places with light to calm winds this eve.
Easterly winds should continue to bring dewpoints higher and
they have increased by 10 to as much as 20 degrees since sunset.
Adjusted for current conditions and allowed for a greater
amount of radiational cooling for several inland communities.
Warm air advection cloudiness continues to stream in aloft.
Most of the cloud cover tonight will be in the form of high
clouds. Mid clouds to our S will continue to expand N and into
southern portions of our fa toward morning.
A weak 500 mb ridge will move across the area tonight and then
offshore Sunday. An upper low dropping southeast across kansas
will make it as far east as arkansas by Sunday afternoon.
Developing southerly flow in the mid and upper levels ahead of
the upper low should begin to increase cloud cover across the
carolinas Sunday, with veering low level winds even developing a
bit of stratocumulus beneath the upper level moisture plume
during the day.
A blossoming area of isentropic lift ongoing now across southern
georgia is developing quite a canopy of mid-level clouds between
charleston, sc and jacksonville, fl. While a little of this moisture
may sneak across the santee river overnight, our skies should remain
mainly clear with good radiational cooling expected. The only
exception to this will be within a few miles of the beaches where
steady onshore winds may prevent a radiational inversion from
developing until late tonight, if at all. The coldest temperatures
tonight should be across interior SE north carolina where lower
40s are expected in the normal cold spots.
Despite winds just above the surface veering more southerly during
the day Sunday, warm advection GOES into lift leading to nearly
steady 850 mb temps. This means highs Sunday shouldn't be
appreciably different from today: low 70s inland and mid-upper 60s
near the coast. Rain chances should hold off until sunset across the
sc pee dee region.
Short term tonight through Monday night
As of 300 pm Saturday... A complex weather pattern will unfold
during the short term period as low pressure, progged to be
near just E of the ms valley during Monday, promotes strong
onshore low-level flow and theta-e advection. As the upper low
drifts ene across tn and into ky the pattern becomes favorable
for strong upward vertical velocities. The upward motion will be
enhanced by the increasingly divergent flow aloft, and the
convergent flow expected to be present in the low levels. As a
result, widespread areas across the ilm CWA may receive 1-3
inches of rainfall. Available instability for thunderstorms is
on the low side however strong lift supports carrying isolated
thunderstorms in the least. Best chance of rain will occur
Monday for southwestern zones, and Monday evening for the
remaining areas. Favored a blend of mav met ece temperatures all
periods. Breezy conditions expected to develop during Monday,
especially along the coast. Will have to watch for potential
coastal flooding as well each high tide Monday into Monday night
given the onshore fetch.
Long term Tuesday through Saturday
As of 300 pm Saturday... A low pressure system will track off to
the NE tues into wed. The sfc low will track closer to the
coastline while the upper low will move northeast from tn toward
the ohio valley. As this closed upper low lifts north, another
shortwave will rotate down toward the southern appalachians by
thurs. Overall, this system remains quite complex, but looks
like the heavier rain will move north leaving clouds but some
drier air wrapping through mid week. The next shortwave should
dig down and push a cold front through on thurs, but does not
look like a big rainmaker. Therefore, expect breaks in the
clouds and some clearing late tues into Wed with increased
clouds and potential for pcp again thurs. Another system will|
follow in this progressive flow by Fri into sat, although the
gfs keeps most of the weather with this system north of our
local forecast area, while the ECMWF remains more pessimistic
heading into next weekend. Overall a good amount of clouds and
and not much QPF expected through the week. Temps have been
trending warmer but remaining near normals through much of the
Aviation 06z Sunday through Thursday
As of 06z... Although low level moisture is slowly increasing, do
not expect much in the way of fog this morning. Boundary layer
moisture remains on the low side for fog and there appears to be
just enough in the way of boundary layer mixing to prevent
anything more than fleeting patches of fog. Will carryVFR
through the valid TAF period. East winds will be light through
the overnight before increasing to 10 to 15 kt later this
morning and for the afternoon. Clouds gradually increase today,
with ceilings starting to lower from southwest to northeast
Extended outlook... Rain Monday and Tuesday could bring periods of
MVFR ifr conditions in low ceilings and visibility. The worst
conditions are expected Monday night. Wed ThuVFR.
Near term through Sunday ...
as of 1000 pm Saturday... A ridge of high pressure extending
from the great lakes to just off the virginia coast is
maintaining an easterly wind across the area. The high will move
very little over the next 24 hours as low pressure develops
across louisiana and arkansas, and this should maintain the
easterly wind through Sunday. Wind speeds overnight will remain
10 to 15 kt, increasing to 15 to 20 kt during sun.
Buoys will remain in the 2 to 3 ft range through the night with
a dominant wave period of 5 seconds with a second peak at 8-9
seconds indicating local wind chop is the more dominant. Waves
of 4 ft should become common Sunday afternoon south of cape
Short term Sunday night through Monday night ...
as of 300 pm Saturday... Marine conditions will become hazardous
during the short term. High pressure off new england during
Monday with low pressure along the ms valley will create a
strong onshore fetch with small craft thresholds likely. Plan
to raise the advisory with the afternoon coastal waters
forecast. The strong winds will continue into Monday night,
and it's possible a period of gales could occur. However,
confidence is not high enough to warrant a gale watch at this
time. The onshore fetch will allow for seas to get above small
craft thresholds by daybreak Monday, and to exceed 10 ft when
winds are strongest later in the day Monday into the evening.
Numerous showers and isolated thunderstorms are expected,
more-so across the southern waters initially, and all waters
by Monday evening.
Long term Tuesday through Thursday ...
as of 300 pm Saturday... Complex low pressure system will track
ne parallel and near to the carolina va coast tues into wed. A
strong onshore flow will persist into tues , but winds will
diminish as they shift around from on shore to off shore by wed
on the back end of the low as it lifts off to the northeast.
Another system will follow behind this one, dragging a cold
through on thurs. Therefore expect off shore flow to continue
through much fo the period.
Overall, expect seas to subside through the period from a peak
tues morning, above 10 ft in outer waters. The on shore flow
will shift around to the off shore and decrease with seas down
below SCA thresholds by Wed morning and continuing to lower to 2
to 4 ft by thurs morning.
Ilm watches warnings advisories
Marine... Small craft advisory from 5 am Monday to 8 am edt Wednesday
Near term... Rjd tra
short term... Srp
long term... Rgz
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|41024 - Sunset Nearshore (SUN 2)||3 mi||46 min||E 9.7 G 12||61°F||62°F||1027 hPa|
|SSBN7||3 mi||92 min||2 ft|
|MROS1 - 8661070 - Springmaid Pier, SC||27 mi||54 min||1030.1 hPa (-1.0)|
|41108||28 mi||54 min||61°F||2 ft|
|WLON7||38 mi||54 min||51°F||64°F||1027.5 hPa (-0.4)|
|JMPN7 - 8658163 - Johnny Mercer Pier, Wrightsville Beach, NC||45 mi||54 min||E 8 G 9.9||61°F||64°F||1028 hPa (-0.4)|
|41110 - Masonboro Inlet, NC||46 mi||54 min||60°F||3 ft|
|41038 - ILM2 - 5 miles SE of Wrightsville Beach, NC||46 mi||46 min||E 5.8 G 9.7||61°F||60°F||1027.5 hPa|
Wind History for Springmaid Pier, SC(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|North Myrtle Beach Grand Strand Airport, SC||12 mi||61 min||E 5||10.00 mi||Fair||60°F||48°F||67%||1027.3 hPa|
|Brunswick County Airport, NC||24 mi||79 min||N 0||10.00 mi||Fair||51°F||46°F||84%||1028.1 hPa|
Wind History from CRE (wind in knots)
|1 day ago||N|
|2 days ago||SW|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Sunset Beach Bridge |
Click for Map
Sun -- 01:39 AM EDT 5.33 feet High Tide
Sun -- 01:47 AM EDT Moonset
Sun -- 06:34 AM EDT Sunrise
Sun -- 08:33 AM EDT 0.20 feet Low Tide
Sun -- 12:23 PM EDT Moonrise
Sun -- 02:25 PM EDT 4.50 feet High Tide
Sun -- 05:46 PM EDT First Quarter
Sun -- 07:50 PM EDT Sunset
Sun -- 08:42 PM EDT 0.18 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Hog Inlet Pier |
Click for Map
Sun -- 01:14 AM EDT 5.60 feet High Tide
Sun -- 01:48 AM EDT Moonset
Sun -- 06:35 AM EDT Sunrise
Sun -- 07:42 AM EDT 0.35 feet Low Tide
Sun -- 12:24 PM EDT Moonrise
Sun -- 01:53 PM EDT 4.62 feet High Tide
Sun -- 05:46 PM EDT First Quarter
Sun -- 07:50 PM EDT Sunset
Sun -- 07:57 PM EDT 0.29 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  HelpWeather Map
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.
target = "new">Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Wilmington, NC (2,6,7,8)(on/off)  Help
Ad by Google
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.