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Marine Weather and Tides
Version 3.4 |
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 6:42AM | Sunset 7:54PM | Friday August 23, 2019 8:42 PM EDT (00:42 UTC) | Moonrise 11:43PM | Moonset 12:57PM | Illumination 40% |  |
AMZ254 Coastal Waters From Little River Inlet To Murrells Inlet Sc Out 20 Nm- 602 Pm Edt Fri Aug 23 2019
Tonight..SW winds 10 to 15 kt, diminishing to 10 kt late. Seas 2 to 3 ft. A slight chance of showers and tstms late.
Sat..W winds 10 kt, becoming S in the afternoon. Seas 2 ft. A chance of showers and tstms in the morning, then showers and tstms likely in the afternoon.
Sat night..E winds 10 kt. Seas 2 ft. Showers. Tstms likely, mainly in the evening.
Sun..NE winds 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 4 ft. Showers. A chance of tstms in the morning, then tstms in the afternoon.
Sun night..NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Showers and tstms likely.
Mon..NE winds 15 to 20 kt, becoming N 10 kt. Seas 3 to 4 ft. A chance of showers and tstms through the day.
Tue..E winds 5 kt, becoming s. Seas 2 ft. A chance of showers and tstms through the night.
Wed..SW winds 10 kt. Seas 2 ft. A chance of showers and tstms. Winds and seas higher in and near tstms.
Tonight..SW winds 10 to 15 kt, diminishing to 10 kt late. Seas 2 to 3 ft. A slight chance of showers and tstms late.
Sat..W winds 10 kt, becoming S in the afternoon. Seas 2 ft. A chance of showers and tstms in the morning, then showers and tstms likely in the afternoon.
Sat night..E winds 10 kt. Seas 2 ft. Showers. Tstms likely, mainly in the evening.
Sun..NE winds 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 4 ft. Showers. A chance of tstms in the morning, then tstms in the afternoon.
Sun night..NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Showers and tstms likely.
Mon..NE winds 15 to 20 kt, becoming N 10 kt. Seas 3 to 4 ft. A chance of showers and tstms through the day.
Tue..E winds 5 kt, becoming s. Seas 2 ft. A chance of showers and tstms through the night.
Wed..SW winds 10 kt. Seas 2 ft. A chance of showers and tstms. Winds and seas higher in and near tstms.
AMZ200 602 Pm Edt Fri Aug 23 2019
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. A cold front will drop southward into the area early Saturday before stalling just offshore Sunday and Monday. Meanwhile, some slow tropical development is possible with an area of low pressure to move ne from the bahamas and florida Sunday and Monday. Mariners should Monitor the forecast closely for potential changes.
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. A cold front will drop southward into the area early Saturday before stalling just offshore Sunday and Monday. Meanwhile, some slow tropical development is possible with an area of low pressure to move ne from the bahamas and florida Sunday and Monday. Mariners should Monitor the forecast closely for potential changes.
7 Day Forecast for Marine Location Near Red Hill, SC
Hourly EDIT Helplocation: 33.75, -79.07 debug
Area Discussion for - Wilmington, NC
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus62 kilm 232346 afdilm area forecast discussion national weather service wilmington nc 746 pm edt Fri aug 23 2019 Synopsis Scattered thunderstorms will become more numerous this weekend as a front stalls in the area. The front will linger offshore early next week. A tropical low may track north up through the offshore waters of the southeast coast early next week, lifting off to the northeast through mid week. Update Pop values adjusted to account for expected convective trends through remainder of evening, no significant changes otherwise. Near term through Saturday night A diurnal downtrend in updraft velocities appears to be slowly taking hold, which will reduce the threat of severe tstms. A front to the north should fill in later with showers and isolated tstms, but may remain north of the area much of the overnight. Somewhat organized afternoon convection well underway inland should diminish in the late afternoon and early evening hours. There should be a lull for quite sometime. Guidance shows a line of convection coming down very late from the north with the long advertised cold front. The trend has been for only a glancing blow so I lowered pops some. Still expect good coverage of showers and thunderstorms Saturday from about 1800 utc onward. The front which will be bisecting the area by then (and who knows how distorted from convection and a possible sea breeze) should be the main focus. For Saturday night the front reorganizes and slowly pushes off the coast and along with it the higher pops. Short term Sunday through Monday night Main concern this period is the approaching cold front and chances for tropical cyclone formation off the coast of the carolinas. Latest model runs have a frontal boundary that will stall near or just offshore, which will bring increased chances for rain near and along the coast, with heaviest rainfall occurring along and east of the highway 17 corridor. Confidence is increasing that there is a good likelihood that a tropical system will be ongoing by Sunday into Monday and approaching the offshore waters, which will bring increasing rough seas, increased chances for enhanced rip current activity along area beaches, and heavy rainfall that could bring minor flooding for low lying and poor drainage areas. Cool weather on tap for most locations with cool air advection behind the frontal boundary pushing into place. Expect afternoon high temperatures to be near to roughly 5 degrees below normal for late august. Long term Tuesday through Friday Low will lift off to the northeast through mid week allowing for some drying, but looks like another front will make its way into the carolinas tues into wed. This front may stall out along or near the coast as high pressure builds in behind it. This may keep unsettled weather, especially along the coast through mid to late week. Aviation 00z Saturday through Wednesday Current shower activity across our inland areas will begin to |
diminish over the next few hours. Although a broken high cloud deck is expected overnight, good chance for ifr MVFR fog at inland sites with plenty of low level moisture and calm winds. As cold front approaches our area overnight and stalls across the area in the morning, expecting low level moisture to get socked in behind the front with an MVFR cloud deck persisting inland through tomorrow night. For coastal sites, maintaining vfr conditions throughout TAF period. However, brief MVFR fog is possible tomorrow morning, and MVFR stratus may make its way to the coast tomorrow afternoon depending on how far the front gets. Rain chances begin to increase again tomorrow morning, with good coverage of showers and thunderstorms expected after 18z tomorrow. South-southwest winds tonight before winds calm overnight and become north-northeasterly behind the front. Weak east-southeasterly winds at coastal sites likely tomorrow afternoon. Extended... Unsettled weather with MVFR ifr possible into Saturday with frontal system in area. Front will likely move just off the coast into Sunday but lingering moisture likely to lead to additional restrictions. Also watching potential tropical system moving NE just off the coast into early next week. Confidence low on related specifics at this time. Marine The summer time flow (a southerly component to the winds) seemingly has only a few more hours in place as a cold front will be pushing across from the north sometime Saturday. The actual arrival time is more toward the morning but wind fields are weak and will become somewhat distorted during the daytime hours via convection and possibly a sea breeze. For this evening expect southerly winds around ten knots or so. Kind of a mix Saturday but overall expect a westerly flow then northeast Saturday night. Most speeds quite light as well. Significant seas will be reflective of the winds about 2-3 feet or so. Front expected to push into the offshore waters by Sunday. Forecast is highly dependent on track and possible development of tropical low which is forecast to move up through the offshore waters of the southeast coast late Sunday through Monday. The gradient should tighten enough to produce a stiffer northerly flow and, in return, an increase in seas. As it stands now, seas 3 ft or less Sat night into early Sun will increase as low makes its closest pass, possibly within 150 miles of the carolina coast, late Sun through Monday. Wave models shows seas up over 4 ft Sun night into mon, but this forecast could change depending on low. NHC has been forecasting a greater chc of development but much uncertainty still exists. This low will lift off to the northeast Mon night into tues with an off shore flow developing. Seas will diminish heading into mid week. Ilm watches warnings advisories Sc... Beach hazards statement until 8 pm edt this evening for scz054- 056. Nc... Beach hazards statement until 8 pm edt this evening for ncz106- 108. Marine... None. Update... 08 near term... 08 shk short term... Mck long term... Mck aviation... Vao marine... Mck shk |
Weather Reporting Stations
EDIT (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 | 10 mi | 73 min | 80°F | |||||
| NIWS1 - North Inlet-Winyah Bay Reserve, SC | 28 mi | 118 min | NW 5.1 | 79°F | 1016 hPa | 73°F | ||
| 41024 - Sunset Nearshore (SUN 2) | 32 mi | 95 min | SW 14 G 21 | 83°F | 85°F | 1016.5 hPa | ||
| 41119 | 32 mi | 53 min | 84°F | 3 ft |
Wind History for Springmaid Pier, SC
(wind in knots) EDIT (on/off) Help| Last 24hr | ||||||||||||||||||||||||
| 1 day ago | ||||||||||||||||||||||||
| 2 days ago |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Conway Horry County Airport, SC | 6 mi | 68 min | N 0 | 10.00 mi | Light Rain | 72°F | 71°F | 100% | 1016.6 hPa |
| Myrtle Beach Air Force Base, SC | 8 mi | 47 min | NW 6 | 10.00 mi | Fair | 78°F | 71°F | 79% | 1016.4 hPa |
| North Myrtle Beach Grand Strand Airport, SC | 19 mi | 50 min | W 4 | 10.00 mi | Fair | 80°F | 73°F | 79% | 1016.1 hPa |
Link to 5 minute data for KHYW
Wind History from HYW (wind in knots)
| 9 PM | 10 PM | 11 PM | -12 PM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | |
| Last 24hr | S | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | SW | SW | SW | S | S | Calm | SE | W | S | SW | S | Calm | Calm |
| 1 day ago | Calm | S | S | Calm | SW | SW | SW | SW | Calm | Calm | Calm | SW | SW | SW | SW | SW G14 | SW | S | S | S G14 | S | S | Calm | S |
| 2 days ago | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | S | SW | W | SW | S | SW | SW | SW | S | S | S G16 | S | S |
Tide / Current Tables for Keysfield, Waccamaw River, South Carolina
EDIT Weekend mode (on/off) (on/off) Help One Week of DataKeysfield
Click for Map
Fri -- 12:03 AM EDT Moonrise
Fri -- 01:51 AM EDT 1.19 feet Low Tide
Fri -- 06:43 AM EDT Sunrise
Fri -- 07:28 AM EDT 1.34 feet High Tide
Fri -- 10:58 AM EDT Last Quarter
Fri -- 01:57 PM EDT Moonset
Fri -- 02:09 PM EDT 0.72 feet Low Tide
Fri -- 07:53 PM EDT Sunset
Fri -- 08:14 PM EDT 1.52 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 12:03 AM EDT Moonrise
Fri -- 01:51 AM EDT 1.19 feet Low Tide
Fri -- 06:43 AM EDT Sunrise
Fri -- 07:28 AM EDT 1.34 feet High Tide
Fri -- 10:58 AM EDT Last Quarter
Fri -- 01:57 PM EDT Moonset
Fri -- 02:09 PM EDT 0.72 feet Low Tide
Fri -- 07:53 PM EDT Sunset
Fri -- 08:14 PM EDT 1.52 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
| 12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 10 am | 11 am | 12 pm | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
| 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.2 | 1 | 0.9 | 0.8 | 0.7 | 0.8 | 0.9 | 1.1 | 1.3 | 1.5 | 1.5 | 1.5 | 1.5 | 1.4 |
Tide / Current Tables for Conway, RR. bridge, Waccamaw River, South Carolina
EDIT (on/off) Help One Week of DataConway
Click for Map
Fri -- 12:03 AM EDT Moonrise
Fri -- 02:59 AM EDT 0.99 feet Low Tide
Fri -- 06:43 AM EDT Sunrise
Fri -- 08:38 AM EDT 1.20 feet High Tide
Fri -- 10:58 AM EDT Last Quarter
Fri -- 01:57 PM EDT Moonset
Fri -- 03:17 PM EDT 0.60 feet Low Tide
Fri -- 07:53 PM EDT Sunset
Fri -- 09:24 PM EDT 1.36 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 12:03 AM EDT Moonrise
Fri -- 02:59 AM EDT 0.99 feet Low Tide
Fri -- 06:43 AM EDT Sunrise
Fri -- 08:38 AM EDT 1.20 feet High Tide
Fri -- 10:58 AM EDT Last Quarter
Fri -- 01:57 PM EDT Moonset
Fri -- 03:17 PM EDT 0.60 feet Low Tide
Fri -- 07:53 PM EDT Sunset
Fri -- 09:24 PM EDT 1.36 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
| 12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 10 am | 11 am | 12 pm | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
| 1.1 | 1.1 | 1 | 1 | 1 | 1.1 | 1.1 | 1.2 | 1.2 | 1.2 | 1.1 | 1 | 0.9 | 0.8 | 0.7 | 0.6 | 0.6 | 0.7 | 0.9 | 1.1 | 1.3 | 1.4 | 1.4 | 1.3 |
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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Wilmington, NC (20,4,5,8)
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Ground Weather Radar Station Wilmington, NC
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Disclaimer: 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. |