Sunday, September24, 2017

Marine Weather and Tides
Surfside Beach, SC

Version 3.4
What's New / NOTES
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.
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.

Sunrise 7:04AMSunset 7:09PM Sunday September 24, 2017 7:05 PM EDT (23:05 UTC) Moonrise 10:08AMMoonset 9:10PM Illumination 19% Phase: Waxing Crescent; Moon at 4 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
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AMZ254 Coastal Waters From Little River Inlet To Murrells Inlet Sc Out 20 Nm- 520 Pm Edt Sun Sep 24 2017
.small craft advisory in effect through Wednesday afternoon...
Tonight..NE winds 15 to 20 kt. Seas 8 ft.
Mon..N winds 15 to 20 kt. Seas 8 ft. A slight chance of showers in the afternoon.
Mon night..N winds 15 to 20 kt. Seas 8 ft. A slight chance of showers.
Tue..N winds 15 to 20 kt with gusts up to 25 kt. Seas 8 ft. A slight chance of showers.
Tue night..N winds 15 to 20 kt with gusts up to 25 kt. Seas 7 ft. A slight chance of showers.
Wed..NW winds 15 to 20 kt with gusts up to 25 kt. Seas 6 ft.
Wed night..NW winds 10 to 15 kt. Seas 5 ft, subsiding to 4 ft after midnight.
Thu..NW winds 10 to 15 kt. Seas 4 ft.
Thu night..N winds 10 kt. Seas 3 ft, subsiding to 2 ft after midnight.
Fri..N winds 10 kt. Seas 3 ft, subsiding to 2 ft in the afternoon.
Fri night..NE winds 10 kt. Seas 2 ft.
AMZ200 520 Pm Edt Sun Sep 24 2017
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. The expansive circulation associated with hurricane maria will dominate and bring hazardous marine conditions through much of the week. The worst of the conditions are expected through Wednesday.

7 Day Forecast for Marine Location Near Surfside Beach, SC
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location: 33.58, -78.88     debug

Area Discussion for - Wilmington, NC
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Fxus62 kilm 242137
area forecast discussion
national weather service wilmington nc
537 pm edt Sun sep 24 2017

Hurricane maria is expected to remain offshore as it moves very
slowly north, with its center passing within 250 miles of the
cape fear coast through Wednesday. Hazardous beach and boating
conditions will continue for much of the week. A cold front is
expected to reach the area Friday, bringing cooler weather for
next weekend.

Near term through Monday
As of 230 pm Sunday... While diurnal cumulus has formed with the
strong insolation this afternoon the low-level band of convergence
far offshore has been the nearest focus for showers today.

Otherwise, the h85-h5 layer has been dry and the low-level
trajectory will keep the showers at bay through tonight. These
showers could approach the CAPE fear area and coastal northeast sc
later Monday. Followed blend of mav met numbers tonight and Monday.

Breezy conditions expected to continue especially along the coast
where the northeasterly pressure gradient increases. Strong rip
currents and high surf will persist at all area beaches through

Short term Monday night through Tuesday night
As of 300 pm Sunday... This period will basically function off the
indirect and possible direct effects generated by hurricane maria as
she tracks northward during this week over the open waters of the
atlantic remaining well offshore from the u.S. Mainland which
includes the local fa. The exception is the outer banks of nc which
will see maria's closest approach.

Once the generally troffiness associated with jose off the mid-
atlantic and new england coasts dissipates, modest to strong upper
level ridging will take it's place. This will slow maria's forward
northward movement with models indicating her well offshore from
cape lookout to CAPE hatteras latitude by Wed morning. With this
track, enough of it's expansive pressure field and moisture will
result in breezy nne-nnw winds across the local area during this
period with the hiest winds along the immediate coast, especially
from CAPE fear northward.

As for pcpn chances associated with maria, locations across coastal
southeast nc will be under a slight rw- chance beginning late mon
night thru tue. The ilm sc CWA will remain pcpn free this period.

With the mid-levels remaining quite dry thruout this period, the
cirrus shield associated with maria will encompass all of the ilm
cwa. The lower levels will see a moisture increase across all
locations, with the deeper low level moist profile across areas from
cape fear northward. Pcpn will be produced from the low level clouds
and remain below 0.10 inches total thruout this period. Temperatures
will continue to run at 1 to possibly 2 categories above the climo
norms. The thick cirrus shield and eventual low level clouds will
limit highs across the CAPE fear northward region, but still above

Beaches along the entire ilm CWA will be under a high surf advisory
and high rip current threat for the majority of this period. This a
result of 6 to 9 foot long period maria swell affecting the local
waters for an extended period of time.

Long term Wednesday through Sunday
As of 300 pm Sunday... Maria, forecast to be well to the east-
northeast of the area at the onset of the period, will continue
moving north and east away from the area. A cold front will
drop into the area Thursday night and move out to sea Friday,
ushering in cooler and drier air for the weekend.

Outside of a small chance of showers Wednesday, mainly over
northeast sections of the forecast area, the extended range
looks mainly dry. High temperatures in the mid 80s to around 90
Wednesday and Thursday will cool to the mid 70s by Sunday. Min
temperatures in the upper 60s to lower 70s Wednesday night
will cool to the upper 50s to lower 60s by Saturday night.

Aviation 18z Sunday through Friday
As of 18z... High pressure will maintainVFR conditions through
tonight however MVFR CIGS are possible as stratus possibly
streams into the coastal terminals during Monday. A few -shra
possible at the coastal terminals as well by later mon, not
enough confidence to include in the tafs at this point. Breezy
northeasterly winds at the coastal terminals as well.

Extended outlook... Brief MVFR conditions may develop at the coastal
airports as hurricane maria brings isolated showers tue-wed as it
moves n, with its center remaining well offshore. N winds may
increase to 15 to 25 kt Monday night through Wednesday.

Near term through Monday ...

as of 230 pm Sunday... High pressure to the north and maria
moving northward from the southeast will result in a
continuation of northeast flow across the coastal waters, with
the highest speeds across the waters off CAPE fear. The flow
will slowly back to the north-northeast during Monday as the
hurricane moves farther north. Large swells coupled with the
waves from the northeasterly fetch will create hazardous
maritime conditions through the period. Widely scattered showers
across the outer waters tonight could increase in coverage
during Monday.

Short term Monday night through Tuesday night ...

as of 300 pm Sunday... SCA conditions will continue across the
area waters thruout this period. With the local waters on the
westward side of hurricane maria as she tracks northward,
remaining well offshore from the local area, wind directions
will run from the nne- N Mon night into tue, and from the nnw-nw
there-after as maria's eye moves north of the local latitude.

The sfc pg associated with maria, will be conducive to wind
speeds in the 15 to 25 kt range south of little river inlet and
20 to 30 kt north of this inlet. Could see gale gusts from cape
fear northward thruout this period.

Significant seas this period will be dominated by the 13-16 second
period, ese-se maria swell. The short period locally produced nne-
nnw wind waves will create choppy conditions on top of this swell.

This a result of a limited fetch. The area inlets to and from the
atlantic as well as the mouths of CAPE fear river and winyah bay
will experience dangerous and hazardous navigating conditions.

Long term Wednesday through Friday ...

as of 300 pm Sunday... Northwest winds of 15 to 25 kt Wednesday
morning will diminish to 10 to 15 kt by Thursday morning. A
shift to the north then northeast will occur Friday and Friday
night. Seas of 4 to 7 ft south and 7 to 9 ft north Wednesday
am will gradually subside through the period, falling to
2 to 3 ft by Friday.

Ilm watches warnings advisories
Sc... High rip current risk through Tuesday evening for scz054-056.

High surf advisory until 9 pm edt Tuesday for scz054-056.

Nc... High rip current risk through Tuesday evening for ncz106-108-

High surf advisory until 9 pm edt Tuesday for ncz106-108-110.

Marine... Small craft advisory until 6 pm edt Wednesday for amz250-252-

Near term... Srp
short term... Dch
long term... Ran
aviation... Srp

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MROS1 - 8661070 - Springmaid Pier, SC 6 mi47 min 1013.6 hPa
NIWS1 - North Inlet-Winyah Bay Reserve, SC 23 mi80 min ENE 7 79°F 1014 hPa72°F
41024 - Sunset Nearshore (SUN 2) 27 mi57 min E 7.8 G 9.7 80°F 80°F1013.8 hPa
SSBN7 28 mi125 min 3 ft
41108 47 mi35 min 80°F7 ft

Wind History for Springmaid Pier, SC
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Myrtle Beach Air Force Base, SC8 mi9 minN 610.00 miFair80°F69°F69%1014.6 hPa
North Myrtle Beach Grand Strand Airport, SC18 mi12 minN 310.00 miA Few Clouds79°F71°F77%1014.1 hPa
Conway Horry County Airport, SC21 mi10 minN 07.00 miFair75°F71°F89%1014.6 hPa

Wind History from MYR (wind in knots)
Last 24hrE6E6E5NE5--N6N5N6N7NE9NE8NE8N8NE9NE9N14NE14
1 day agoSE4SE3SE3SE4CalmCalmCalmCalmN3N3N5N5N5N4N66CalmE7SE7SE8SE7SE8SE5E6
2 days agoNE8E10SE7W4NW4NW3NE5CalmN5N3N7N6CalmN3NE3SE8E6--E8SE8SE8E8SE6SE6

Tide / Current Tables for Myrtle Beach (Springmaid Pier), South Carolina
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Myrtle Beach (Springmaid Pier)
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Sun -- 04:38 AM EDT     0.68 feet Low Tide
Sun -- 07:05 AM EDT     Sunrise
Sun -- 11:01 AM EDT     5.88 feet High Tide
Sun -- 11:08 AM EDT     Moonrise
Sun -- 05:09 PM EDT     0.95 feet Low Tide
Sun -- 07:09 PM EDT     Sunset
Sun -- 10:09 PM EDT     Moonset
Sun -- 11:12 PM EDT     5.20 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Springmaid Pier, Atlantic Ocean, South Carolina
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Springmaid Pier
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Sun -- 04:46 AM EDT     0.60 feet Low Tide
Sun -- 07:05 AM EDT     Sunrise
Sun -- 11:08 AM EDT     Moonrise
Sun -- 11:09 AM EDT     5.64 feet High Tide
Sun -- 05:15 PM EDT     0.85 feet Low Tide
Sun -- 07:09 PM EDT     Sunset
Sun -- 10:09 PM EDT     Moonset
Sun -- 11:17 PM EDT     4.97 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
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Weather Map
IR Satellite Image from GEOS

GOES Local Image of Southeast    EDIT

Wind Forecast for Wilmington, NC (19,4,5,8)
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Ground Weather Radar Station Wilmington, NC
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weather_mapweather_map weather_map

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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 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 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.