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Marine Weather and Tides
Version 3.4 |
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone. 1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17. 1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support. |
| Sunrise 6:59AM | Sunset 7:22PM | Thursday September 16, 2021 1:56 PM EDT (17:56 UTC) | Moonrise 4:08PM | Moonset 1:13AM | Illumination 76% |  |
AMZ256 Coastal Waters From Murrells Inlet To South Santee River Sc Out 20 Nm- 1203 Pm Edt Thu Sep 16 2021
This afternoon..NE winds 10 to 15 kt, diminishing to 5 to 10 kt late. Seas 2 to 3 ft.
Tonight..NW winds 5 kt. Seas 2 to 3 ft.
Fri..N winds 5 to 10 kt, diminishing to 5 kt in the afternoon. Seas 2 to 3 ft. A slight chance of showers in the afternoon.
Fri night..W winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms.
Sat..N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 ft. A slight chance of showers and tstms in the morning, then a chance of showers and tstms in the afternoon.
Sat night..E winds 5 kt. Seas 2 ft. A chance of showers and tstms.
Sun..NE winds 5 to 10 kt, becoming E 10 to 15 kt. Seas 2 to 3 ft. A chance of tstms through the day. A chance of showers.
Mon..E winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers through the day. Winds and seas higher in and near tstms.
This afternoon..NE winds 10 to 15 kt, diminishing to 5 to 10 kt late. Seas 2 to 3 ft.
Tonight..NW winds 5 kt. Seas 2 to 3 ft.
Fri..N winds 5 to 10 kt, diminishing to 5 kt in the afternoon. Seas 2 to 3 ft. A slight chance of showers in the afternoon.
Fri night..W winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms.
Sat..N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 ft. A slight chance of showers and tstms in the morning, then a chance of showers and tstms in the afternoon.
Sat night..E winds 5 kt. Seas 2 ft. A chance of showers and tstms.
Sun..NE winds 5 to 10 kt, becoming E 10 to 15 kt. Seas 2 to 3 ft. A chance of tstms through the day. A chance of showers.
Mon..E winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers through the day. Winds and seas higher in and near tstms.
AMZ200 1203 Pm Edt Thu Sep 16 2021
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. A tropical disturbance several hundred miles off the carolina coast will lift northward over the next several days. No direct impacts are expected, although e-se swell will increase today and tomorrow. High pressure will build from the north this weekend and into early next week.
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. A tropical disturbance several hundred miles off the carolina coast will lift northward over the next several days. No direct impacts are expected, although e-se swell will increase today and tomorrow. High pressure will build from the north this weekend and into early next week.
7 Day Forecast for Marine Location Near Stuckey, SC
Hourly EDIT Help
location: 33.6, -79.43 debug
Area Discussion for - Wilmington, NC
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS62 KILM 161614 AFDILM
Area Forecast Discussion National Weather Service Wilmington NC 1214 PM EDT Thu Sep 16 2021
SYNOPSIS. Tropical moisture from Tropical Depression Nicholas enters the area, creating chances for scattered showers and storms through the end of the work week. Meanwhile, a tropical disturbance off the Atlantic shore may produce some rip currents for local beaches. A drying trend begins this weekend into the middle of next week.
UPDATE. The trickiest part of today's forecast remains temperatures across the Pee Dee/Interstate 95 corridor where thick mid and high level cloud cover may inhibit insolation and have an impact on temperatures today. The 06z GFS remains much cooler than the NAM, HRRR, or ECMWF for today in Florence and Darlington. I've only made small tweaks to forecast high temperatures for now but will continue to monitor satellite and trends in hourly temps closely. A narrow zone of mid level dry air between 5000-15000 feet AGL should keep shower activity minimal compared to farther inland across SC and areas offshore closer to the tropical disturbance.
NEAR TERM /THROUGH FRIDAY/. Satellite shows a plethora of debris clouds from the remnants of Nicolas. This has limited the ability for radiational cooling to produce areas of fog as expected earlier this evening. However, low- level stratus continues to develop in spots. This is expected to continue through sunrise before northerly flow brings slightly drier air into the region and allows a layer from near the surface to around 5k ft AGL to dry out.
PoPs have been increased for Thursday (also expanded over a slightly larger area) over portions of northeastern SC given the current surface analysis and radar depiction over east-central GA. Models also show this precip associated with a mid-level wave moving through the area during peak heating this afternoon. Expecting the tropical air mass to saturate quickly and isolated convection to develop this afternoon. Only limiting factor at this point appears to be high temperatures. Over SC, increasing cloud cover may limit temperatures by the afternoon, limiting our convective potential. NC will be positioned between the tropical air mass to the west and a weak tropical low offshore. Northerly flow on the NW side of the offshore system should be slow to saturate with soundings showing an area of dry air between the surface and around 5k ft AGL. This should limit any shower chances, but have maintained 10% due to the potential for showers to the west to advance eastward.
Temperatures today trending slightly warmer over extreme northeast SC and portions of eastern NC due to the low-level dry air limiting cloud cover until later in the day. Still could see some large variations in temperatures along the I-95 corridor in SC as the arrival of cloud cover and isolated showers pose an interesting challenge. As mentioned above, a vorticity wave ahead of the main remnant circulation may assist with mid-level lift and produce more convection than the current suite of high-resolution models are depicting.
Tropical air mass will remain in place on Friday but the majority of the forcing quickly advances to our north. Air mass convection is possible, but any development would be isolated and quickly diminishing as westerly flow aloft begins to dry-out the column significantly. Have maintained shower chances over NC with areas of SC staying mostly rain-free (low chance of a shallow non-convective shower as the near-surface tropical air mass holds for a few additional hours).
SHORT TERM /FRIDAY NIGHT THROUGH SATURDAY NIGHT/. A shortwave trough aloft originates from the Gulf states and moves northeast towards the Carolinas. Meanwhile, closer to the surface, a ridge tries to build into the area, with the GFS yet again being the fastest to mature the ridge by Saturday. Though this ridging does cause a drying trend in the mid- and low- levels of the atmosphere, there is still enough moisture and buoyancy for a chance of showers and storms by Saturday afternoon, with the greatest chances over the inland portions of SC. Showers and storms will be diurnal in nature, with the activity slowing down after sunset.
Highs Saturday in the upper 80s. Lows Friday night and Saturday night in the upper 60s to near 70.
Finally, the NHC is still advertising an area of low pressure a few hundred miles offshore that has a 70% chance of developing tropical characteristics. Though swells will be lowering as this (potentially tropical) system pushes to the northeast, there could be some lingering rip current activity for area beaches on Saturday. Check out weather.gov/beach/ilm for the latest surf forecast.
LONG TERM /SUNDAY THROUGH THURSDAY/. Ridge continues to build in Sunday, attaining some good vertical continuity by Monday. Ridge axis builds in to the north of the area Monday into Tuesday, before pushing offshore by Wednesday. This continues the drying trend, though can't rule out a chance of showers every afternoon. The drier atmosphere kills the buoyancy, so thunder might be hard to come by through this period.
That said, wouldn't be surprised if these rain chances decrease in subsequent forecasts. Tuesday and Wednesday in particular could be rather interesting, as as cold air damming (CAD) may settle into the area, depending on the location of the surface high. Surface high located in the northern mid-Atlantic up into New England, along with northeasterly flow locally, supports this idea. The northeasterly flow may also contribute in more cloud cover (which supports the lack of instability idea) and perhaps slightly lower temperatures. For what it's worth, model soundings don't necessarily show the classic CAD temperature inversion, so the details are still hazy at this point.
High temperatures in the mid-to-upper 80s. Lows in the upper 60s to near 70.
AVIATION /16Z THURSDAY THROUGH MONDAY/. Low pressure offshore will give us northeast winds today. There will be a bit of subsidence around the low so convection will be isolated at best. There will also be a lot of mid and high clouds today, so temps may be a few degrees cooler. No fog expected tonight due to the cloud cover, however MVFR ceilings are possible.
Extended Outlook . Decent chances for showers on Friday and Saturday. VFR Sunday and Monday.
MARINE. Through Friday . Northeasterly flow develops in response to a developing area of low pressure offshore. Winds 10-15 knots with gusts to 15-20 knots. Remaining sub-SCA category today, but seas build to 3-5 feet due to the increasing E or SE swell (waves could increase to near 6 feet along the NC waters out 40nm). As the low exits off to the NE, winds will become NW and waves diminish to 3-4 feet by tomorrow and tomorrow night.
Friday Night through Monday . Westerly winds at 5-10kts Friday night become more northerly by Saturday, before becoming more variable throughout Saturday. Winds then settle into a ENE pattern by Sunday morning through the rest of the period, increasing to 10-15kts. Swells 2-3ft Friday night drop off to 1-3ft by Saturday morning, lingering through the weekend. Swells increase slightly to 2-4ft by Monday. Wave periods generally 6-8 seconds.
ILM WATCHES/WARNINGS/ADVISORIES. SC . None. NC . None. MARINE . None.
SYNOPSIS . ILM UPDATE . TRA NEAR TERM . 21 SHORT TERM . IGB LONG TERM . IGB AVIATION . 43 MARINE .
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 | 22 mi | 72 min | ENE 11 | 82°F | 1017 hPa | 73°F | ||
| MROS1 - 8661070 - Springmaid Pier, SC | 28 mi | 63 min | 82°F |
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 |
| Georgetown County Airport , SC | 21 mi | 82 min | NE 6 | 10.00 mi | Fair | 82°F | 72°F | 70% | 1017.3 hPa |
| Conway Horry County Airport, SC | 23 mi | 62 min | N 6 | 10.00 mi | Mostly Cloudy | 82°F | 70°F | 66% | 1016.9 hPa |
| Kingstree Williamsburg Regional Airport, SC | 24 mi | 62 min | N 0 | 10.00 mi | Mostly Cloudy | 82°F | 72°F | 70% | 1017.3 hPa |
Link to 5 minute data for KGGE
Wind History from GGE (wind in knots)
| 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 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 | |
| Last 24hr | SE | E | E | E | SE | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | NE | NE | E | NE |
| 1 day ago | S | SE | SE | SE | SE | SE | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | E | Calm | Calm | E | E |
| 2 days ago | SE | SE | E | SE | SE | SE | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | E | SE | E | E |
Tide / Current Tables for Rhems, Black Mingo Creek, Black River, South Carolina
EDIT Weekend mode (on/off) (on/off) Help One Week of DataRhems
Click for Map
Thu -- 02:12 AM EDT Moonset
Thu -- 04:54 AM EDT 1.07 feet Low Tide
Thu -- 07:01 AM EDT Sunrise
Thu -- 10:40 AM EDT 1.82 feet High Tide
Thu -- 05:02 PM EDT 0.64 feet Low Tide
Thu -- 05:08 PM EDT Moonrise
Thu -- 07:22 PM EDT Sunset
Thu -- 11:27 PM EDT 2.28 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Thu -- 02:12 AM EDT Moonset
Thu -- 04:54 AM EDT 1.07 feet Low Tide
Thu -- 07:01 AM EDT Sunrise
Thu -- 10:40 AM EDT 1.82 feet High Tide
Thu -- 05:02 PM EDT 0.64 feet Low Tide
Thu -- 05:08 PM EDT Moonrise
Thu -- 07:22 PM EDT Sunset
Thu -- 11:27 PM EDT 2.28 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 |
| 2.1 | 1.8 | 1.6 | 1.3 | 1.1 | 1.1 | 1.2 | 1.3 | 1.5 | 1.7 | 1.8 | 1.8 | 1.7 | 1.5 | 1.2 | 1 | 0.7 | 0.6 | 0.7 | 1 | 1.4 | 1.8 | 2.1 | 2.3 |
Tide / Current Tables for Mt. Pleasant Plantation, Black River, South Carolina
EDIT (on/off) Help One Week of DataMt. Pleasant Plantation
Click for Map
Thu -- 02:13 AM EDT Moonset
Thu -- 04:45 AM EDT 1.07 feet Low Tide
Thu -- 07:02 AM EDT Sunrise
Thu -- 10:18 AM EDT 1.87 feet High Tide
Thu -- 04:53 PM EDT 0.64 feet Low Tide
Thu -- 05:08 PM EDT Moonrise
Thu -- 07:22 PM EDT Sunset
Thu -- 11:05 PM EDT 2.34 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Thu -- 02:13 AM EDT Moonset
Thu -- 04:45 AM EDT 1.07 feet Low Tide
Thu -- 07:02 AM EDT Sunrise
Thu -- 10:18 AM EDT 1.87 feet High Tide
Thu -- 04:53 PM EDT 0.64 feet Low Tide
Thu -- 05:08 PM EDT Moonrise
Thu -- 07:22 PM EDT Sunset
Thu -- 11:05 PM EDT 2.34 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 |
| 2.1 | 1.8 | 1.5 | 1.3 | 1.1 | 1.1 | 1.2 | 1.4 | 1.6 | 1.8 | 1.9 | 1.8 | 1.7 | 1.5 | 1.2 | 0.9 | 0.7 | 0.6 | 0.8 | 1.1 | 1.5 | 1.9 | 2.2 | 2.3 |
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