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Marine Weather and Tides
Version 3.4 |
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 6:07AM | Sunset 8:18PM | Saturday May 25, 2019 11:41 PM EDT (03:41 UTC) | Moonrise 12:20AM | Moonset 11:04AM | Illumination 54% |  |
AMZ256 Coastal Waters From Murrells Inlet To South Santee River Sc Out 20 Nm- 932 Pm Edt Sat May 25 2019
Overnight..S winds 10 kt. Seas 2 ft.
Sun..SW winds 10 to 15 kt. Seas 2 ft.
Sun night..SW winds 10 to 15 kt. Seas 2 to 3 ft.
Mon..SW winds 10 to 15 kt, diminishing to 10 kt in the afternoon. Seas 2 ft.
Mon night..SW winds 10 kt. Seas 2 ft.
Tue..SW winds 10 kt, increasing to 10 to 15 kt. Seas 2 ft.
Wed..SW winds 10 to 15 kt. Seas 2 to 3 ft.
Thu..SW winds 15 kt. Seas 3 to 4 ft.
Overnight..S winds 10 kt. Seas 2 ft.
Sun..SW winds 10 to 15 kt. Seas 2 ft.
Sun night..SW winds 10 to 15 kt. Seas 2 to 3 ft.
Mon..SW winds 10 to 15 kt, diminishing to 10 kt in the afternoon. Seas 2 ft.
Mon night..SW winds 10 kt. Seas 2 ft.
Tue..SW winds 10 kt, increasing to 10 to 15 kt. Seas 2 ft.
Wed..SW winds 10 to 15 kt. Seas 2 to 3 ft.
Thu..SW winds 15 kt. Seas 3 to 4 ft.
AMZ200 932 Pm Edt Sat May 25 2019
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. A front dissipates over the area tonight, bringing a return to sw and W winds much of the upcoming period.
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. A front dissipates over the area tonight, bringing a return to sw and W winds much of the upcoming period.
7 Day Forecast for Marine Location Near Pawleys Island, SC
Hourly EDIT Helplocation: 33.45, -79.11 debug
Area Discussion for - Wilmington, NC
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus62 kilm 260141 afdilm area forecast discussion national weather service wilmington nc 941 pm edt Sat may 25 2019 Synopsis Isolated showers and thunderstorms along the sea breeze this afternoon will dissipate in the evening. Temperatures in the mid to upper 90s will be widespread next week with potential for triple digit temperatures inland. Slight chance of showers and thunderstorms Monday night, but widespread rainfall is not expected for much of the week. Update 9:30 pm through tonight Tonight: patchy fog possible with slight chances for isolated showers thunderstorms. Satellite night fog product shows a steady stream of moisture this evening pushing into the CAPE fear region tonight, which brought low clouds for mainly the coastal locations. Weak front pushing through the region may bring some isolated showers and ever so slight chance for thunder tonight. Patches of fog are possible as dew points remain elevated for the forecast area and low temperatures are expected to drop with increasing relative humidity values. Otherwise, no major changes to the forecast tonight. Near term through Sunday night As of 330 pm Saturday... Latest surface analysis shows a frontal boundary near the sc nc border. This front will continue to dissipate into tonight, but with some associated weak convergence and decent moisture around 900-700mb, isolated tstms have developed this aftn. This should continue until around sunset, with coverage remaining isolated at best. Dry then for tonight with low temps in the lwr 70s under a partly cloudy sky. Light onshore flow will again bring the potential for fog and low stratus near the coast. Upper- level ridge persists over the SE CONUS Sunday, and with westerly sfc winds, the heat returns for even areas closer to the coast. Expect highs range from near 90 right at the coast to the upr 90s inland. Continued mild and dry for Sunday night with lows in the lwr 70s. Short term Monday through Tuesday night As of 3 pm Saturday... Mid-level ridge holds strong Mon into Tue as weak backdoor cold front tries to drop in from the north. Appears the front will stall just north of the area, but it will lead to westerly flow at the surface Mon afternoon. This will keep the sea breeze pinned along the coast, allowing for a return of highs in the mid to upper 90s for much of the forecast area. Stalled front lingers north of the area Tue with elongated surface high extending from the northern gulf of mexico to the western atlantic. Pattern will maintain westerly flow on Tue at the surface while strong subsidence continues under the 5h ridge. The result will be another hot day with temperatures similar to those on mon. Precip chances appear bleak with subsidence working against upward motion above 8k ft. Additionally an abundance of mid-level dry air will erode any cumulus that start to develop. Lows each night will be well above climo with most areas in the lower 70s. Long term Wednesday through Saturday |
As of 3 pm Saturday... Mid-level ridge over the southeast Wed starts to weaken on Thu as 5h shortwave passes well northwest of the area. The flattening ridge retreats south, setting up a progressive mid- level pattern. Low pressure moving across the mid-atlantic states and across southern new england drags a cold front into the area late next week, increasing rainfall chances. -heat continues Wed and Thu with temperatures 10 to 15 degrees above normal. -temperatures moderate slightly Fri and sat, although both highs and lows will still be 5 to 10 degrees above climo. -weakening ridge and approaching cold front increase rain chances Fri and sat. Aviation 02z Sunday through Thursday As of 0z... .Tricky overnight conditions in the area due to south- southeasterly flow moistening low levels at the coast, and increased relative humidities inland. Ifr stratus currently over cre and myr, expected to dissipate in a few hours but may hold on longer than anticipated. Expect MVFR stratus to develop at ilm in the next couple of hours and look to hold on til morning. Due to ample low level moisture, forecasting MVFR fog at most terminals, except ilm, but increased winds may lead to patchy fog and intermittent MVFRVFR conditions. After daybreakVFR conditions return with clear skies followed by some diurnal cumulus. Southerly winds overnight will veer to westerly by tomorrow afternoon, with southwesterly at coastal sites as sea breeze will remain pinned to coast. Extended outlook... MainlyVFR into next week. Slight chance MVFR each morning in low stratus fog, or isolated tstms. Marine As of 330 pm Saturday... Fairly benign marine conditions for tonight through Sunday night as a weak front dissipates over the area and sfc high pressure remains centered offshore. Expect onshore winds of 10-15 kt tonight, shifting to the SW at a similar speed Sunday Sunday night ahead of a weak trough dropping into the area. Seas 2-3 ft. There will be some very weak sely 7 second swell moving into the area by late Sunday. Elongated surface high south and east of the waters next week will maintain southwest to west flow across the waters. Strengthening piedmont trough each afternoon pinches the gradient, increasing speeds over the waters. Development of sea breeze will also induce onshore flow along the coast. Speeds will generally be 10 to 15 kt, but with potential for solid 15 kt later in the day. Seas 2 to 3 ft, mostly southerly wind wave, for much of next week will creep up to 3 to 4 later thu. Ilm watches warnings advisories Sc... None. Nc... None. Marine... None. Near term... Mas short term... Iii long term... Iii aviation... Vao |
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 |
| NIWS1 - North Inlet-Winyah Bay Reserve, SC | 8 mi | 116 min | SE 5.1 | 80°F | 1019 hPa | 78°F | ||
| MROS1 - 8661070 - Springmaid Pier, SC | 18 mi | 47 min | 78°F | |||||
| 41024 - Sunset Nearshore (SUN 2) | 43 mi | 33 min | SSE 9.7 G 16 | 77°F | 78°F | 1020.4 hPa |
Wind History for Springmaid Pier, SC
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Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Georgetown County Airport , SC | 15 mi | 46 min | SE 3 | 10.00 mi | Fair | 77°F | 75°F | 94% | 1020.3 hPa |
| Myrtle Beach Air Force Base, SC | 19 mi | 45 min | SSE 8 | 10.00 mi | Overcast | 79°F | 77°F | 94% | 1020.4 hPa |
Wind History from GGE (wind in knots)
| 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 | -12 PM | |
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Tide / Current Tables for Midway Inlet North, Pawleys Island, South Carolina
EDIT Weekend mode (on/off) (on/off) Help One Week of DataMidway Inlet North
Click for Map
Sat -- 01:12 AM EDT 4.32 feet High Tide
Sat -- 01:20 AM EDT Moonrise
Sat -- 06:10 AM EDT Sunrise
Sat -- 07:58 AM EDT 0.80 feet Low Tide
Sat -- 12:04 PM EDT Moonset
Sat -- 01:36 PM EDT 3.68 feet High Tide
Sat -- 08:03 PM EDT 1.15 feet Low Tide
Sat -- 08:16 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 01:12 AM EDT 4.32 feet High Tide
Sat -- 01:20 AM EDT Moonrise
Sat -- 06:10 AM EDT Sunrise
Sat -- 07:58 AM EDT 0.80 feet Low Tide
Sat -- 12:04 PM EDT Moonset
Sat -- 01:36 PM EDT 3.68 feet High Tide
Sat -- 08:03 PM EDT 1.15 feet Low Tide
Sat -- 08:16 PM EDT Sunset
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 |
| 4 | 4.3 | 4.2 | 3.8 | 3.1 | 2.3 | 1.5 | 1 | 0.8 | 1.1 | 1.8 | 2.6 | 3.2 | 3.6 | 3.7 | 3.4 | 2.9 | 2.3 | 1.7 | 1.3 | 1.2 | 1.4 | 2 | 2.8 |
Tide / Current Tables for Allston Creek, South Carolina
EDIT (on/off) Help One Week of DataAllston Creek
Click for Map
Sat -- 01:20 AM EDT Moonrise
Sat -- 01:48 AM EDT 4.17 feet High Tide
Sat -- 06:09 AM EDT Sunrise
Sat -- 08:48 AM EDT 0.77 feet Low Tide
Sat -- 12:04 PM EDT Moonset
Sat -- 02:12 PM EDT 3.54 feet High Tide
Sat -- 08:16 PM EDT Sunset
Sat -- 08:53 PM EDT 1.10 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 01:20 AM EDT Moonrise
Sat -- 01:48 AM EDT 4.17 feet High Tide
Sat -- 06:09 AM EDT Sunrise
Sat -- 08:48 AM EDT 0.77 feet Low Tide
Sat -- 12:04 PM EDT Moonset
Sat -- 02:12 PM EDT 3.54 feet High Tide
Sat -- 08:16 PM EDT Sunset
Sat -- 08:53 PM EDT 1.10 feet Low 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 |
| 3.6 | 4 | 4.2 | 3.9 | 3.4 | 2.7 | 2 | 1.3 | 0.9 | 0.8 | 1.2 | 2 | 2.7 | 3.3 | 3.5 | 3.5 | 3.1 | 2.6 | 2.1 | 1.6 | 1.2 | 1.1 | 1.4 | 2.1 |
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 (23,6,7,8)
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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. |