Marine Weather and Tides
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 7:17AM||Sunset 5:34PM||Friday January 18, 2019 5:59 PM EST (22:59 UTC)||Moonrise 3:07PM||Moonset 4:33AM||Illumination 95%|
7 Day Forecast for Marine Location Near Surfside Beach, SCHourly EDIT Help
Area Discussion for - Wilmington, NC  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus62 kilm 182021|
area forecast discussion
national weather service wilmington nc
321 pm est Fri jan 18 2019
Weak high pressure will remain across the area through early
sat. Strong low pressure will affect the area later this
weekend, providing milder air during Saturday followed by
showers and isolated thunderstorms Saturday night into early
Sunday. Dry canadian high pressure will build in behind cold
front through early next week and will provide some of the
coldest temperatures so far this winter season.
Near term through Saturday
As of 300 pm Friday... Low clouds were tough to fight off in
spots, but most places experienced breaks of sunshine this
aftn. Clouds will return tonight as weak high pressure shifts
further off the coast and a warm front moves up from the south.
Over this will also increase the chc of drizzle or light
sprinkles spreading up from the s-sw toward morning. Very light
winds will become more variable as they shift around form w-nw
to e-se through Sat morning. Places with fewer clouds this
evening will see temps drop off quicker while clouds will be
slower to drop in areas of cloud cover. Will make for a bit of a
trickier forecast, but overall expect temps in the low to mid
40s over much of nc and close to 50 over the northeast sc coast.
As warm front lifts north of the area Saturday, winds will begin
to pick up from the s. Expect to see some breaks of sunshine,
although moisture profiles and sounding data does show some mid
to high level moisture. The warmer and moister southerly flow
riding over the cooler shelf waters should produce some sea fog
sat aftn into the eve. WAA will push temps up into the mid 60s
Short term Saturday night through Sunday night
As of 300 pm Friday... Strong southerly flow Saturday night with
winds between 15 and 20 mph under the warm sector as low
pressure and surface gradient increase across the carolinas.
Rain approaches during the day Saturday as a cold front moves
westward. Rain chances increase into the evening with chances
for isolated thunderstorms within the frontal band that moves
through the carolinas. Although most surface based CAPE remains
offshore, some instability in the elevated profile may be
conducive to thunder development, but confidence is low as to if
formation of thunderstorms will occur. Nevertheless, a slight
chance has been included in the forecast.
Winds shift direction to the west Sunday morning as the cold frontal
passage occurs, with breezy conditions continued through the day.
Rain expected to end sometime Sunday morning with lingering chances
for a stray shower of two as the front passes Sunday afternoon. Max
temperatures will most likely occur sometime Sunday morning with
temperatures falling throughout the day as strong cold air advection
reduces afternoon temperatures. Temperatures will continue to slide
into the low to mid 20s Sunday night, which is about 10 degrees
below normal low temperatures for this time of year.
Long term Monday through Friday
As of 300 pm Friday... Cold start to the week as a cold air mass
and strong cold air advection behind a cold front moves into
the region. High temperatures Monday in the upper 30s to lower
40s will be on the order of 25 to 30 degrees below normal. Low
temperatures will be in the upper teens to mid 20s Monday night
into Tuesday morning, which is somewhere between 10 and 15|
degrees below normal.
Southerly flow returns Tuesday to bring warmer air into the region
and temperatures return to near normal. Warming trend continues
into Wednesday ahead of the next approaching storm system. Early
projections indicate another round of moderate to heavy rain at
times Wednesday and Thursday with chances for thunderstorms, mainly
along the coast.
Aviation 18z Friday through Wednesday
As of 18z... A frontal boundary will stall across the area overnight
but until then pesky ceilings this afternoon will waffle between
MVFR andVFR ceilings. MVFR ceilings are expected with possible ifr
ceiling developing after 07 utc and the ceilings are expected to
lower to ifr lifr condition closer to 12 utc. The clouds are
expected to slowly lift to MVFR conditions after mid-morning.
Extended outlook... MVFR conditions possible later Saturday into
Sunday due to showers in the area.VFR Monday and Tuesday. MVFR
conditions possible with a frontal passage on Wednesday.
Marine Saturday ...
as of 300 pm Friday... Very weak pressure gradient in place
through Sat morning as high pressure shifts slowly off the
southeast coast. This will maintain seas less than 2 ft. W-nw winds
will shift around to the NE and E through Sat morning remaining
less than 10 kts.
Winds and seas will begin deteriorating during Sat aftn as low
pressure system approaches from the west. Onshore winds will
shift around to the S and increase as gradient tightens up
towards late aftn sat. Should see winds up to 10 to 15 kts sat
aftn and seas just beginning to rise.
Short term Saturday night through Sunday night ...
as of 300 pm Friday... Strong onshore flow will shift later
Saturday night into Sunday morning to offshore as a cold front
passes over the offshore waters. Waves between 6 and 9 feet and
winds between 20 and 30 kts will produce hazardous seas for
small craft. A small craft advisory has been issued for the
short term period Saturday evening through Sunday evening.
Developing thunderstorms could pose a threat offshore also with
locally hazardous seas and erratic shifting high winds at times
with the frontal passage.
Long term Monday through Tuesday ...
as of 300 pm Friday... Seas become calmer 2 to 4 feet with
shifting winds 10 to 15 kts through the period with a series of
frontal passages. The next chances for hazardous seas would be
in the Wednesday to Thursday time frame with the next
approaching disturbance with chances for thunderstorms,
increasing winds and significant wave heights.
Ilm watches warnings advisories
Near term... Rgz
short term... Mck
long term... Mck
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|
|NIWS1 - North Inlet-Winyah Bay Reserve, SC||23 mi||134 min||SSE 6||58°F||1018 hPa||51°F|
|41024 - Sunset Nearshore (SUN 2)||28 mi||51 min||SSW 5.8 G 7.8||54°F||55°F||1018.6 hPa|
|41108||47 mi||59 min||55°F||1 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||8 mi||63 min||SSW 5||10.00 mi||Mostly Cloudy||55°F||50°F||83%||1019.4 hPa|
|North Myrtle Beach Grand Strand Airport, SC||18 mi||66 min||SSW 5||8.00 mi||A Few Clouds||55°F||50°F||83%||1018.6 hPa|
|Conway Horry County Airport, SC||21 mi||64 min||N 0||7.00 mi||Partly Cloudy||55°F||50°F||82%||1019 hPa|
Wind History from MYR (wind in knots)
|1 day ago||S||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||NW||N||N||NE||N||Calm||SE||SE||SE||E||E||E||E|
|2 days ago||NW||Calm||Calm||Calm||Calm||Calm||N||Calm||Calm||W||Calm||W||Calm||Calm||Calm||NW||NW||Calm||SW||S||S||S |
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
EDIT (on/off)  Help One Week of Data
Weather Map and Satellite Images(on/off)  HelpWeather Map
GOES Local Image of Southeast 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 Wilmington, NC (17,4,5,8)(on/off)  Help
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