Monday, December9, 2019
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Marine Weather and Tides
Surfside Beach, SC

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:07AMSunset 5:08PM Monday December 9, 2019 10:02 PM EST (03:02 UTC) Moonrise 3:38PMMoonset 4:24AM Illumination 97% Phase: Waxing Gibbous; Moon at 13 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- 633 Pm Est Mon Dec 9 2019
.dense fog advisory in effect until 10 pm est this evening...
Tonight..S winds 10 kt, becoming sw 10 to 15 kt late this evening and overnight. Seas 4 to 5 ft. Patchy fog this evening. Patchy fog late. Vsby 1 nm or less this evening.
Tue..SW winds 10 to 15 kt. Seas 4 to 5 ft. Patchy fog in the morning. Patchy fog in the afternoon. Vsby 1 to 3 nm in the morning.
Tue night..SW winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of showers in the evening, then a chance of showers with isolated tstms after midnight. Patchy fog. Vsby 1 to 3 nm in the evening.
Wed..N winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 3 to 4 ft. A chance of showers.
Wed night..N winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. A slight chance of showers.
Thu..NE winds 20 to 25 kt. Seas 4 to 6 ft.
Fri..NE winds 15 to 20 kt, becoming se 10 to 15 kt. Seas 4 to 6 ft. Showers.
Sat..SW winds 10 kt, becoming W 10 to 15 kt. Seas 4 to 5 ft. Showers likely through the day. Winds and seas higher in and near tstms.
AMZ200 633 Pm Est Mon Dec 9 2019
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. Moderate sw winds are expected ahead of a cold front. The cold front will approach the coast Tuesday, crossing the waters late Tuesday night and early in the morning Wednesday. This will be followed by strong high pressure, gusty ne winds, and large seas Thursday into Friday. Gradual improvement into the weekend is expected, as the high moves offshore and sw winds return.


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 092338 AFDILM

Area Forecast Discussion National Weather Service Wilmington NC 638 PM EST Mon Dec 9 2019

SYNOPSIS. As a warm front lifts north, a pronounced warming trend will be felt through Tuesday. A cold front early Wednesday will bring rain, followed by cooler air through mid week. Brief clearing and drying Thursday will be followed by a wet Gulf system Friday into Saturday. A drying trend is expected next Sunday and Monday.

NEAR TERM /THROUGH TUESDAY NIGHT/. Temperatures curves tonight nearly flat-line as warm air advection and diurnal cooling nearly nullify one other, 57-64 for min-T and in some areas, this may occur early in the night as we may observe even slight rises in temperatures after 6z/1am. Late afternoon sun will impact minimum temps, but a slight drop after dark expected.

Dry mid-level air and lack of notable lift about the area will keep rain chances below 10 percent much of this period, until Tuesday night, as a cold front approaches the coast. The balmy flow and elevated dewpoints leading up to this, may induce patchy sea fog along our coastal land zones, mostly favored south of Cape Fear from Santee River to Southport.

The warm air advection will be strong enough tuesday to list a few record highs for December 10th: ILM - 78 in 2007, FLO - 78 in 2007, and MYR 81 in 1943. Our forecast temps do not quite reach these values, but will approach. The 81 at CRE will be very difficult given chilly SSTs and SSW winds in afternoon.

The front to bring light and moderate rain Tuesday night, and CAPE values surface and aloft warrant a slight chance of a TSTM ahead of the front Tuesday night and early Wednesday. System rain total through daybreak Wednesday are slated to be a light wetting, a 0.07- 0.18" range for most areas. Locally higher amount likely since convective pcpn will play a role. Being that the instability is low however, the severe threat will remain low, as poor lapse aloft prevail and limited wind shear during frontal passage.

SHORT TERM /WEDNESDAY THROUGH WEDNESDAY NIGHT/. Back to reality when it comes to temperatures this period. High pressure builds into the Northeastern U.S. putting the coastal Carolinas on its seasonably cool southern edge. Forecast soundings show saturation beneath the increasingly strong temperature inversion so no sunshine expected. Some dry air could lead to some late night clearing well inland. A few light showers could linger into the morning hours along the coast. For the remainder of Wednesday non-measurable rain appears more likely than measurable and POPs have been lowered after 18Z especially inland.

LONG TERM /THURSDAY THROUGH MONDAY/. Chilly high pressure ridge hangs on Thursday and starts getting overrun with warm and moist air. Cloud cover will be on the increase but rain should hold off given lack of deep layer forcing. Not so on Friday as cyclonic flow and height falls impinge from the east and a surface wave slides up the coast. Given the depth of the lift the area could see semi-appreciable rainfall. Moisture stays locked in on Saturday but some dry air advects into the area on Sunday. Temperatures will be slightly elevated above climatology for much of the period other than Thursday.

AVIATION /18Z MONDAY THROUGH SATURDAY/. Increasing low-level winds along with increasing cloud cover aloft will inhibit any fog formation. However, with surface dewpoints at or slightly above adjacent SSTs there is a chance that additional sea fog/stratus will develop during the overnight hours into early Tuesday morning. Any sea fog/stratus would primarily impact the coastal terminals. KLTX VWP is indicating 1-2 kft winds of 30-35 knots and with light winds at the surface have continued to mention LLWS at times until mixing leads to stronger surface winds generally after 13-14Z Tuesday.

Extended Outlook . MVFR conditions also possible Tuesday and Tuesday night as the next cold front approaches and moves through the area. Another round of MVFR is possible Friday into Saturday as an area of low pressure moves by the coastal Carolinas.

MARINE. Marine visibility has improved and the marine dense fog advisory will be allowed to expire at 3 pm. The moist and mild wind flow over the waters ahead of the cold front, could produce additional bouts of sea fog tonight and Tuesday, most probable from Santee River to Murrells Inlet to Southport. A small craft advisory will remain in place north of Cape Fear for 6 ft seas offshore. Sea spectrum will have SE waves 3-5 feet every 8-9, and SSW waves 1-2 feet every 5-6 seconds. Marine showers will converge on the waters by Tuesday night as a cold front approaches, bring rain, and likely SCA conditions into Wednesday as strong high pressure builds in. Latest WW3 data pointing to 9-10 feet at Frying Pan Shoals and the outer waters on Wednesday.

High pressure that starts building behind cold front Wednesday will yield a long period of Small Craft Advisory winds and/or seas as moderately strong N to NE gradient winds are maintained. The gradient may ease on Friday as a wave of low pressure rides up the coast but the turn to a more onshore wind direction will likely keep advisory-worthy 6 ft seas in the area.

ILM WATCHES/WARNINGS/ADVISORIES. SC . None. NC . None. MARINE . Small Craft Advisory until 6 AM EST Tuesday for AMZ250.

SYNOPSIS . ILM NEAR TERM . 08 SHORT TERM . mbB LONG TERM . mbB AVIATION . SRP


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MROS1 - 8661070 - Springmaid Pier, SC 6 mi44 min 58°F
NIWS1 - North Inlet-Winyah Bay Reserve, SC 23 mi77 min SSW 6 65°F 1017 hPa63°F
41024 - Sunset Nearshore (SUN 2) 28 mi54 min WNW 3.9 G 5.8 56°F 55°F1018.7 hPa
41119 28 mi72 min 55°F2 ft
41108 47 mi62 min 56°F3 ft

Wind History for Springmaid Pier, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Myrtle Beach International Airport, SC8 mi66 minS 610.00 miFair60°F60°F100%1018.3 hPa
North Myrtle Beach Grand Strand Airport, SC18 mi69 minSSW 1010.00 miFair61°F60°F97%1018 hPa
Conway Horry County Airport, SC21 mi67 minS 310.00 miFair61°F59°F94%1017.9 hPa

Link to 5 minute data for KMYR

Wind History from MYR (wind in knots)
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Last 24hrN8N7N4N6NW4NW3N3N4CalmCalmCalmCalmCalmE5E3SE3CalmSE5SE3SE4S7S7S7S6
1 day agoN7NE5NE8NE9
G15
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2 days agoCalmCalmCalmN4CalmCalmNW4NW3NW3NW6N5N9N8
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NE7N8N7E5E7E63N4N6NE6NE5

Tide / Current Tables for Myrtle Beach (Springmaid Pier), South Carolina
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Myrtle Beach (Springmaid Pier)
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Mon -- 04:24 AM EST     Moonset
Mon -- 04:56 AM EST     5.53 feet High Tide
Mon -- 07:08 AM EST     Sunrise
Mon -- 11:30 AM EST     0.89 feet Low Tide
Mon -- 03:37 PM EST     Moonrise
Mon -- 05:07 PM EST     Sunset
Mon -- 05:22 PM EST     4.84 feet High Tide
Mon -- 11:28 PM EST     0.34 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.123.24.45.35.55.24.43.42.31.4111.52.43.44.34.84.74.13.1210.4

Tide / Current Tables for Springmaid Pier, Atlantic Ocean, South Carolina
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
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wmap_A
GEOS 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 (22,6,7,8)
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Ground Weather Radar Station Wilmington, NC
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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 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.