Marine Weather and Tides
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
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|Sunrise 7:06AM||Sunset 7:35PM||Tuesday March 28, 2017 8:03 AM EDT (12:03 UTC)||Moonrise 6:40AM||Moonset 7:23PM||Illumination 1%|
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|AMZ256 Coastal Waters From Murrells Inlet To South Santee River Sc Out 20 Nm- 351 Am Edt Tue Mar 28 2017 |
Today..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A slight chance of showers and tstms.
Tonight..W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft.
Wed..NW winds 10 kt...becoming ne in the afternoon. Seas 2 to 4 ft...subsiding to 2 to 3 ft in the afternoon.
Wed night..E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft...building to 2 to 4 ft after midnight.
Thu..E winds 15 kt with gusts up to 20 kt. Seas 4 ft.
Thu night..SE winds 15 to 20 kt. Seas 4 ft.
Fri..SE winds 15 to 20 kt...becoming sw. Seas 4 to 6 ft. Showers and tstms.
Sat..W winds 10 to 15 kt...becoming N 10 kt. Seas 3 to 5 ft... Subsiding to 2 to 3 ft. Winds and seas higher in and near tstms.
|AMZ200 351 Am Edt Tue Mar 28 2017 |
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. Southerly flow around atlantic high pressure will continue through into today. A weak cold front will approach from the west late today and push across the area waters and offshore early Wed. High pressure will follow and build across the area from the north Wed night into Thu. Another cold front will move across the waters on Fri with drier high pressure to follow for the weekend.
7 Day Forecast for Marine Location Near Murrells Inlet, SCHourly EDIT Help
Area Discussion for - Wilmington, NC  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus62 kilm 281035|
area forecast discussion
national weather service wilmington nc
635 am edt Tue mar 28 2017
The risk for showers and perhaps an isolated strong thunderstorm
will occur today ahead of a cold front which will move through
late tonight. Relatively cooler and drier high pressure will build
in from the north late Wednesday into Thursday. Showers and thunderstorms
are expected as warmer and more humid air returns Friday ahead
of a cold front which will move offshore early Saturday. Some of the
thunderstorms may be strong to severe Friday and Friday night. The
weekend should be dry as high pressure takes hold. Then early next
week, a southern stream system will again bring the risk for showers
Near term /through tonight/
As of 300 am Tuesday... A healthy warm and moist southerly
return flow along with clouds have kept temps up in the 60s most
places with dewpoint temps well into the 50s. This juicy air
mass ahead of a cold front will set the stage for an increasing
chc of shwrs/tstms through today. Ml CAPE will reach over a 1000
j/kg as heating of the day occurs with increasing LLJ and
dewpoint temps up around 60. Expect increasing coverage through
the morning hours from west to east with increasing shear and
upper level support mainly over nc. The cloud cover may slow the
destabilization process but decent elevated CAPE early on will
be aided by heating of the day and upper level support to
produce added lift and potential for storms with gusty winds and
hail in isolated stronger storms. SPC has most of central and
eastern nc in a marginal risk for svr weather diminishing as the
shortwave tracks off shore by late aftn. There may be some
lingering shwrs/tstms along the coast into early evening
depending on how fast the shortwave traverses the area.
Southerly winds will veer slowly to the SW and become gusty through
the day before shifting to the W by tues evening as trough moves
through. Expect plenty of clouds through the day but some breaks or
brightening will allow temps to reach up toward 80 most places. The
increasing SW flow will fight against inland movement of sea breeze
and therefore the stable air behind sea breeze will remain pinned
closer to the coast. Overall expect increasing westerly flow aloft
and drier air to put an end to convection across the area by late
aftn with some lingering clouds into the evening. Pcp water values
up around 1.4 inches in the aftn will drop under an inch by midnight
as winds from the sfc up through the mid levels become westerly and
eventually northwest overnight. Clearing should take place overnight
although some residual low level moisture will remain into the
morning. Temperatures will drop off slowly as the cold front will
not actually make it through until the early morning hours on
wed. Low temps should be in the mid 50s most places.
Although the official surf zone forecast season has not started yet,
local beaches will see an increase in rip current activity today.
This a result of a healthy SE ground swell affecting the local
waters and increasing the surf.
Short term /Wednesday through Thursday night/
As of 300 am Tuesday... Cold front will be offshore Wed morning.
Strong high pressure centered across eastern canada will begin
to ridge south across the carolinas later Wed and Wed night. A
wedge will develop Wed night and persist into Thu before the
ridge begins to weaken and shift offshore Thu night. Dry weather
wed into Thu as partial sunshine returns. A potent southern
stream system will approach from the W Thu night. Clouds will be
on the increase later Thu and especially Thu night. The system
has slowed down some, but will continue to advertise a slight
chance/small chance of showers and thunderstorms, mainly
overnight Thu with the lowest risk across the CAPE fear area and
the highest across the i-95 corridor and westward.
The cool air will be slow to arrive and so highs on Wed should
still be well above normal, upper 70s to lower 80s with marine
influences keeping the coastal communities in the lower to mid
70s. Highs Thu will be in the upper 60s to lower 70s with
perhaps some mid 70s across portions of the pee dee. Lows will
be mainly in the 50s.
Long term /Friday through Monday/
As of 300 am Tuesday... Next in series of potent southern stream
systems will impact the eastern carolinas Fri and Fri night with
a categorical risk for showers and thunderstorms developing.
The combination of significant upper level support and strong
and deep moisture return and lift provides at least the
opportunity for a more widespread and significant rainfall
event. There will be some risk for strong to severe
thunderstorms during this time. 0-6 km effective bulk shear
parameters are not particularly impressive. However, instability
does grow with mixed layer CAPE values on the order of 500 to
1000 j/kg as the warm front should move to our n. Mid-level
lapse rates are forecast to be rather modest. The potential is
there for an active day/night leading into the weekend, although
magnitude is certainly still a question mark.
In the wake of this system, dry weather and near to above
normal temps are expected for the weekend as mid-level ridging
builds across the area and surface high pressure builds from the
nw and n. Attention then will turn westward as next southern
stream system along the gulf coast Sun night lifts to the NE and
drags a warm front to the n. This will again bring deep
moisture into the carolinas, and with that, showers and
thunderstorms early next week. Given timing differences between|
long range models and a general slower trend as compared to 24
hours ago, will cap pops in the chance category until we can
gain better resolution as to when the highest risk for showers
and thunderstorms will occur.
Aviation /12z Tuesday through Saturday/
As of 12z... The greatest coverage of showers and some thunderstorms
will move across portions of the i-95 corridor through 14-15z.
The highest probability for a thunderstorm at any of the
terminals this morning will be klbt. The convection will be in
the vicinity of kflo, but the brunt should pass just to the n
this morning. Conditions will beVFR throughout, except there is
the potential for visibility to briefly drop to MVFR in rain at
any terminal. The most organized convection will be ahead of a
shortwave this morning through midday with any activity this
Winds will veer slowly through the day, but may see a slight
backing along coastal terminals in the afternoon due to the sea
breeze. Sustained wind speeds will be up to 10 to 15 kt today.
A cold front will push through late tonight, shifting winds to
the NW and N toward morning. Did not include any restrictions
in fog overnight, but later forecasts may as the dry air will be
slow to advect across the area.
Extended outlook... Flight restrictions are likely in showers
and thunderstorms fri/fri night and thunderstorms may contain
strong wind gusts.
Near term /through tonight/...
as of 300 am Tuesday... Ssw winds 10 kt or less will veer and
increase through today as gradient tightens a bit between high
pressure off shore and an approaching cold front. By this
evening winds will become more westerly remaining around 10 to
15 kt. Seas will increase but will remain in the 2 to 4 ft
range over sc waters and 3 to 5 ft in nc waters. The greater off
shore westerly wind component overnight will push most of the 5
fters beyond our local waters leaving 2 to 4 ft by morning.
Winds my spike up a bit as cold front crosses the waters wed
A longer period SE swell will continue to reach our local waters
from a rather deep low pressure system well offshore from the se
u.S. Coast forecast to move northeast, further away from the u.S.
Mainland. Boaters navigating to and from area inlets on Tue could
encounter rough wave conditions especially during an outgoing tide
combined with the incoming 10+ second period swell.
Short term /Wednesday through Thursday night/...
as of 300 am Tuesday... Cold front should be offshore at the
start of the period. Strong high pressure across eastern canada
will build south and eventually wedge across the carolinas wed
night and thu. The strong ridge should then move offshore thu
night. N winds Wed morning will veer to ne. NE winds Wed night
and Thu will then veer to SE Thu night. Sustained wind speeds
will increase to 15 to 20 kt Wed night and remain in that range
through the end of the forecast period. Seas will build to 3 to
5 ft by Wed night and then remain in that range for much of thu
before perhaps subsiding about a foot Thu night.
Long term /Friday through Sunday/...
as of 300 am Tuesday... A small craft advisory is likely for all
waters Fri and Fri night with conditions possibly lingering
Slow moving area of low pressure will be moving across the ohio
valley fri. Its accompanying warm front will move across the
waters fri. As low pressure moves offshore of the mid-atlantic
states late Fri night and Sat morning, it will strengthen and
drag a cold front across the waters. High pressure will slowly
build across the area from the N and NW Sat night and sun.
Se winds Fri morning will become S and then SW Fri night. The
wind direction will become westerly early Sat morning and then
nw by Sat afternoon. N winds Sat night will become NE overnight
sat with NE winds persisting into Sun before veering to easterly
during the afternoon.
The strongest winds are expected Fri and Fri night, up to 20 to
25 kt. Seas late Fri and Fri night will build to 4 to 7 ft and
around 8 ft at frying pan shoals. Seas during Sat will only slowly
subside as backswell from departing storm system impacts the
waters. Seas should drop below advisory levels by late Sat and
to 2 to 4 ft on sun.
Near term... Rgz/rjd
short term... Rjd
long term... Rjd
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|
|MROS1 - 8661070 - Springmaid Pier, SC||13 mi||45 min||1015.1 hPa|
|NIWS1 - North Inlet-Winyah Bay Reserve, SC||14 mi||78 min||WSW 5.1||64°F||1015 hPa||61°F|
|SSBN7||39 mi||93 min||2 ft|
Wind History for Springmaid Pier, SC(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Myrtle Beach Air Force Base, SC||14 mi||78 min||SW 5||10.00 mi||Fair||64°F||59°F||83%||1015.9 hPa|
|Georgetown County Airport , SC||20 mi||68 min||SW 4||10.00 mi||Partly Cloudy||59°F||59°F||100%||1016.3 hPa|
|Conway Horry County Airport, SC||20 mi||68 min||S 3||7.00 mi||Fair||55°F||55°F||100%||1015.6 hPa|
Wind History from MYR (wind in knots)
|1 day ago||Calm||S||SE||S||S||SE||SE||SE||SE||W||S||SE||SE||S||S||S||S||S||S||Calm||Calm||Calm|
|2 days ago||SW||SW||W||S||S||S||S||S||S||SE||SE||Calm||Calm||S||S||S||S||Calm||Calm||Calm|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Wachesaw Landing |
Click for Map
Tue -- 06:47 AM EDT -0.62 feet Low Tide
Tue -- 07:08 AM EDT Sunrise
Tue -- 07:39 AM EDT Moonrise
Tue -- 12:09 PM EDT 3.14 feet High Tide
Tue -- 07:07 PM EDT -0.73 feet Low Tide
Tue -- 07:34 PM EDT Sunset
Tue -- 08:22 PM EDT Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Midway Inlet North |
Click for Map
Tue -- 03:11 AM EDT -0.61 feet Low Tide
Tue -- 07:09 AM EDT Sunrise
Tue -- 07:40 AM EDT Moonrise
Tue -- 08:52 AM EDT 4.93 feet High Tide
Tue -- 03:31 PM EDT -0.70 feet Low Tide
Tue -- 07:34 PM EDT Sunset
Tue -- 08:23 PM EDT Moonset
Tue -- 09:11 PM EDT 5.28 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of Southeast EDIT
Wind Forecast for Wilmington, NC (8,2,3,4)(on/off)  Help
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