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Marine Weather and Tides
Version 3.4 |
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed. 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. |
| Sunrise 7:16AM | Sunset 7:43PM | Saturday March 28, 2020 8:42 PM EDT (00:42 UTC) | Moonrise 8:50AM | Moonset 10:40PM | Illumination 24% |  |
AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm, Including Grays Reef National Marine Sanctuary- 652 Pm Edt Sat Mar 28 2020
Tonight..S winds 10 to 15 kt. Seas 2 to 3 ft. Patchy fog after midnight.
Sun..SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Patchy fog.
Sun night..S winds 10 to 15 kt with gusts to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Patchy fog.
Mon..NW winds 5 to 10 kt, becoming ne in the afternoon. Seas 2 ft.
Mon night..S winds 5 kt. Seas 2 ft in the evening, then seas 1 foot.
Tue..SE winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Seas 2 to 3 ft. A slight chance of showers in the morning, then a chance of showers and tstms in the afternoon.
Tue night..W winds 15 to 20 kt. Seas 2 to 3 ft. A chance of tstms. Showers likely.
Wed..NW winds 15 to 20 kt. Seas 2 to 3 ft.
Wed night..NW winds 10 to 15 kt. Seas 2 to 3 ft.
Thu..N winds 10 to 15 kt. Seas 2 to 3 ft.
Thu night..NE winds 5 to 10 kt. Seas 2 ft. Mariners are reminded that winds and seas higher in and near tstms.
Tonight..S winds 10 to 15 kt. Seas 2 to 3 ft. Patchy fog after midnight.
Sun..SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Patchy fog.
Sun night..S winds 10 to 15 kt with gusts to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Patchy fog.
Mon..NW winds 5 to 10 kt, becoming ne in the afternoon. Seas 2 ft.
Mon night..S winds 5 kt. Seas 2 ft in the evening, then seas 1 foot.
Tue..SE winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Seas 2 to 3 ft. A slight chance of showers in the morning, then a chance of showers and tstms in the afternoon.
Tue night..W winds 15 to 20 kt. Seas 2 to 3 ft. A chance of tstms. Showers likely.
Wed..NW winds 15 to 20 kt. Seas 2 to 3 ft.
Wed night..NW winds 10 to 15 kt. Seas 2 to 3 ft.
Thu..N winds 10 to 15 kt. Seas 2 to 3 ft.
Thu night..NE winds 5 to 10 kt. Seas 2 ft. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 652 Pm Edt Sat Mar 28 2020
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Very warm high pressure will prevail through Sunday. A dry cold front will push through Sunday night, followed by high pressure Monday. Low pressure will then cross the area Tuesday into Tuesday night, followed by high pressure through late week.
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Very warm high pressure will prevail through Sunday. A dry cold front will push through Sunday night, followed by high pressure Monday. Low pressure will then cross the area Tuesday into Tuesday night, followed by high pressure through late week.
7 Day Forecast for Marine Location Near Richmond Hill, GA
Hourly EDIT Helplocation: 31.95, -81.34 debug
Area Discussion for - Charleston, SC
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS62 KCHS 282259 AFDCHS
Area Forecast Discussion National Weather Service Charleston SC 659 PM EDT Sat Mar 28 2020
SYNOPSIS. Very warm high pressure will prevail through Sunday. A dry cold front will push through Sunday night, followed by high pressure Monday. Low pressure will then cross the area Tuesday into Tuesday night, followed by high pressure through late week.
NEAR TERM /UNTIL 6 AM SUNDAY MORNING/. Only minor adjustments required to the forecast. The potential for sea fog to form is low overnight, but should it occur it could certainly brush the barrier islands, especially from Tybee north. For now though there is no reason to add to the forecast. Low stratus seems likely far interior Georgia closer to daybreak.
Previous discussion . Weak southerly flow will persist through tonight as high pressure sits off the coast. Stratus will likely develop across western and central Georgia later tonight, eventually drifting to the east and into our inland GA zones toward daybreak Sunday. We cannot rule out patchy fog though the best probabilities are to the west. Lows expected to drop to the low to mid 60s.
SHORT TERM /6 AM SUNDAY MORNING THROUGH TUESDAY/. Sunday: Ahead of an approaching cold front, deep-layered high pressure will produce another unseasonably warm day featuring record/near record highs in the upper 80s to lower 90s away from the beaches.
Sunday night: A cold front will cross the region. While this front should initially support showers/thunderstorms west of the region Sunday afternoon into Sunday evening, models agree that capping/subsidence produced by the high pressure will dominate over our region, and any upstream convection will dissipate before reaching our area. Thus, the cold front will pass with clouds, a wind shift to the north and advection of drier air/lower dewpoints into the region.
Monday: Weak high pressure will build over the region, and even though temperatures will be somewhat cooler than those of this weekend, highs will still average well-above normal for late March, in the lower/middle 80s at many locations away from the immediate coast, and even in the upper 80s across parts of interior SE GA south of I-16. On the beaches, offshore winds to start will allow temperatures to recover well into the 70s/around 80F. Then, the afternoon sea breeze should drop temperatures at least back into the lower 70s most locations.
Monday night: Clouds should increase/thicken ahead of low pressure developing west of the region. However, rain is not expected. Temperatures should bottom out in the upper 50s to lower 60s inland, and in the lower/middle 60s at the coast.
Tuesday: Low pressure will approach the region during the morning and will track east across the area Tuesday afternoon. In response to intensifying low/mid level moisture transport and increasing deep layered forcing for ascent, precipitation coverage should ramp up as the day progresses. The latest forecasts depicts slight chance/chance PoPS Tuesday morning increasing to likely/categorical most areas Tuesday afternoon. The latest forecast also indicates most of the region breaking into the warm sector with highs ranging from the lower/middle 70s north to the lower/middle 80s south. However, temperature forecasts remain highly uncertain and depend on the exact track of the surface low. Temperatures across northern/inland counties could struggle to climb out of the 60s if precipitation supports an in-situ wedge.
Most importantly, the low pressure will produce the potential for severe weather Tuesday, especially during the afternoon/evening. At one extreme of the solution spectrum, the warm sector could surge into most/all of the forecast area, and the resulting instability could combine with strong/cyclonic shear to support a severe weather event. At the other extreme, greater coverage of precipitation and a more expansive/persistent in-situ wedge could greatly limit the potential for any severe weather. Forecasts mention a chance for thunderstorms Tuesday afternoon/evening, and we will include a brief mention of the potential for severe weather within the Hazardous Weather Outlook. However, critical details remain highly uncertain, so expect this forecast to evolve over the next couple of days.
LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/. Low pressure will shift off the coast Tuesday night and continue to lift away from the area on Wednesday. A few showers could linger into Wednesday, but largely the bulk of precipitation will end Tuesday night. High pressure will then build into the area allowing for dry weather through Thursday. Models beyond this time aren't in the best agreement, although it appears another front and/or low could pass through late week. Temperatures will be more seasonable.
AVIATION /00Z SUNDAY THROUGH THURSDAY/. VFR through 24Z Sunday. Any fog/stratus around 09-14Z Sunday currently looks to stay outside the terminal range. Gusty SW winds expected Sunday afternoon during the warmest part of the day.
Extended Aviation Outlook: Mainly VFR into Tuesday. Flight restrictions likely as low pressure crosses the area with showers Tuesday into later Tuesday night. Also, thunderstorms are possible Tuesday afternoon. Then, mainly VFR should return Wednesday. into Tuesday evening.
MARINE. Since there remains no evidence of sea fog so far, we removed it from the pre-midnight period. Conditions are not that favorable even after midnight though, since wind speeds will likely be to strong overall.
Previous discussion . Southwest winds around 15 kt will continue through tonight. Although models continue to predict sea fog, thus far it has not developed and dewpoints nor wind speeds are expected to differ much during the next 12-18 hours. We did, however, maintain patchy fog over the nearshore waters.
Until the initial cold front advances through the waters Sunday night, patchy fog could develop over the nearshore waters. However, the chance for widespread/significant sea fog remains low.
Expect elevated SW winds as high as 15-20 knots and seas 3-5 feet Sunday into Sunday evening. Then, a dry cold front will cross the waters later Sunday night, and winds will shift to the northwest at 5-10 knots. High pressure will shift over the waters Monday, and the associated weak pressure gradient will promote widespread sea breeze development Monday afternoon. Monday night, under the high pressure variable winds less than 10 kt will prevail. Also, seas will settle back to 2-3 ft Monday and 1-2 ft Monday night. Low pressure will then approach the waters Tuesday and will track over marine zones Tuesday evening. As a result, winds will increase, initially from the east/southeast early Tuesday, veering to the south Tuesday afternoon then to the southwest Tuesday evening. Depending on the track/strength of the low, Small Craft Advisory conditions are possible any time Tuesday afternoon into Tuesday evening, but the probability remains insufficient to justify an Advisory within the saturday afternoon package. Then, as the low pressure intensifies and tracks northeast off the NC coast, a cold front will push through the region, northwest winds will surge into the waters and seas will build. Given the tightening pressure gradient on the southwestern periphery of the Atlantic low/in the wake of the cold front, the probability for Small Craft Advisory conditions will increase significantly. This regime will then persist through Wednesday night, followed by somewhat lighter offshore winds/seas Thursday through Friday.
CLIMATE. Record high maximum and high minimum temperatures into Sunday.
KCHS: Sat 3/28: 88 (2017) / 65 (1987) Sun 3/29: 87 (2012) / 67 (1997)
KSAV: Sat 3/28: 90 (2020) / 67 (1921) Sun 3/29: 90 (1907) / 67 (1991)
KCXM: Sat 3/28: 91 (1907) / 68 (1921) Sun 3/29: 91 (1907) / 68 (1997)
CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . None. MARINE . None.
NEAR TERM . SHORT TERM . SPR LONG TERM . AVIATION . MARINE . CLIMATE .
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 |
| FPKG1 - 8670870 - Fort Pulaski, GA | 24 mi | 73 min | SSW 7 G 11 | 72°F | 68°F | 1016.5 hPa | ||
| SAXG1 - Sapelo Island Reserve, GA | 37 mi | 103 min | SSE 11 | 75°F | 1016 hPa (-0.0) | 70°F | ||
| 41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA | 45 mi | 53 min | S 14 G 16 | 72°F | 69°F | 2 ft | 1015.9 hPa (+0.4) | 71°F |
Wind History for Fort Pulaski, GA
(wind in knots) EDIT (on/off) Help| 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 | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | |
| Last 24hr | SW G12 | SW G12 | SW G15 | SW G12 | SW G13 | SW G8 | SW | W | W | W | W | S | S G8 | S | SW G9 | S G9 | S G9 | S G12 | S G13 | S G15 | S G12 | S G13 | S G10 | S G12 |
| 1 day ago | E | E | E | SE | SE | S | S | S | SW G9 | SW | SW | SW G9 | SW G9 | SW G8 | SW G9 | SW | S | S G10 | S G11 | S G10 | S G15 | S G13 | S G12 | SW |
| 2 days ago | NE | E G17 | E | E G15 | E G20 | E G23 | E | E G22 | E | E G19 | E | E | E | E | E G19 | E G19 | E G17 | E G17 | E G16 | E G17 | E G15 | E | E | E |
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 |
| Hunter U. S. Army Airfield, GA | 11 mi | 47 min | SSE 7 | 10.00 mi | Fair | 75°F | 66°F | 74% | 1015.5 hPa |
| Wright Army Airfield (Fort Stewart)/Midcoast Regional Airport, GA | 13 mi | 47 min | SSE 7 | 10.00 mi | Fair | 80°F | 63°F | 57% | 1015.1 hPa |
| Savannah-Hilton Head International Airport, GA | 15 mi | 50 min | S 13 | 10.00 mi | Partly Cloudy | 78°F | 64°F | 64% | 1015.6 hPa |
Link to 5 minute data for KSVN
Wind History from SVN (wind in knots)
| 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 | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | |
| Last 24hr | S | S | S | S | S | SW | SW | SW | W | W | Calm | Calm | S | SW | SW | SW | SW | S | S G17 | SE | S | S | S | S |
| 1 day ago | E | E | Calm | Calm | Calm | Calm | Calm | Calm | S | S | SW | SW | SW | SW | W | SW | W | SW | SW | SW | S | S | ||
| 2 days ago | Calm | Calm | NE | E | E G18 | E | E | E | E | NE | NE | E | E | E G19 | E G19 | E | E | E | E | E | E | E | E |
Tide / Current Tables for Highway bridge, Ogeechee River, Georgia
EDIT Weekend mode (on/off) (on/off) Help One Week of DataHighway bridge
Click for Map
Sat -- 02:16 AM EDT 1.06 feet High Tide
Sat -- 07:17 AM EDT Sunrise
Sat -- 09:49 AM EDT 0.06 feet Low Tide
Sat -- 09:49 AM EDT Moonrise
Sat -- 02:42 PM EDT 0.93 feet High Tide
Sat -- 07:42 PM EDT Sunset
Sat -- 10:01 PM EDT 0.05 feet Low Tide
Sat -- 11:40 PM EDT Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 02:16 AM EDT 1.06 feet High Tide
Sat -- 07:17 AM EDT Sunrise
Sat -- 09:49 AM EDT 0.06 feet Low Tide
Sat -- 09:49 AM EDT Moonrise
Sat -- 02:42 PM EDT 0.93 feet High Tide
Sat -- 07:42 PM EDT Sunset
Sat -- 10:01 PM EDT 0.05 feet Low Tide
Sat -- 11:40 PM EDT Moonset
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 |
| 0.7 | 0.9 | 1.1 | 1 | 0.9 | 0.8 | 0.6 | 0.4 | 0.2 | 0.1 | 0.1 | 0.2 | 0.5 | 0.7 | 0.9 | 0.9 | 0.9 | 0.8 | 0.6 | 0.4 | 0.2 | 0.1 | 0.1 | 0.2 |
Tide / Current Tables for Fort McAllister, Ogeechee River, Georgia
EDIT (on/off) Help One Week of DataFort McAllister
Click for Map
Sat -- 06:40 AM EDT 0.41 feet Low Tide
Sat -- 07:17 AM EDT Sunrise
Sat -- 09:49 AM EDT Moonrise
Sat -- 12:11 PM EDT 6.22 feet High Tide
Sat -- 06:52 PM EDT 0.37 feet Low Tide
Sat -- 07:42 PM EDT Sunset
Sat -- 11:40 PM EDT Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 06:40 AM EDT 0.41 feet Low Tide
Sat -- 07:17 AM EDT Sunrise
Sat -- 09:49 AM EDT Moonrise
Sat -- 12:11 PM EDT 6.22 feet High Tide
Sat -- 06:52 PM EDT 0.37 feet Low Tide
Sat -- 07:42 PM EDT Sunset
Sat -- 11:40 PM EDT Moonset
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 |
| 7.1 | 6.6 | 5.6 | 4.2 | 2.8 | 1.5 | 0.6 | 0.5 | 1.4 | 3 | 4.6 | 5.7 | 6.2 | 6 | 5.4 | 4.3 | 3 | 1.7 | 0.7 | 0.4 | 1.1 | 2.8 | 4.8 | 6.2 |
Weather Map
(on/off) Help Weather Map
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 Charleston, SC (20,4,5,8)
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Ground Weather Radar Station Charleston, SC
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