Sunrise 6:39 AM   Sunset 8:04 PM Moonrise 12:00 AM   Moonset 8:46 AM

  Print   HELP   Reset   Save   Recall

AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm, Including Grays Reef National Marine Sanctuary- 312 Am Edt Sun Apr 28 2024
Today - E winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft this afternoon. Wave detail: E 4 ft at 7 seconds. Tonight - SE winds 10 kt. Seas 3 to 4 ft. Wave detail: E 4 ft at 7 seconds. Mon - SE winds 5 to 10 kt. Seas 3 ft. Wave detail: E 3 ft at 8 seconds. Mon night - SE winds 5 to 10 kt. Seas 3 ft. Wave detail: se 2 ft at 7 seconds and E 2 ft at 8 seconds. Tue - S winds 5 to 10 kt. Seas 3 ft. Wave detail: se 2 ft at 7 seconds and E 2 ft at 9 seconds. Tue night - S winds 10 to 15 kt. Seas 3 ft. Wave detail: se 3 ft at 7 seconds and E 2 ft at 9 seconds. Wed - S winds 5 to 10 kt. Seas 2 to 3 ft. Wed night - S winds 5 to 10 kt. Seas 2 to 3 ft. Thu - S winds 5 to 10 kt. Seas 2 ft. Thu night - SE winds 10 kt. Seas 2 ft.

AMZ300 312 Am Edt Sun Apr 28 2024
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia - High pressure will prevail through much of next week. A weak disturbance will move through late Tuesday. A weak cold front could approach next weekend.

FXUS62 KCHS 280748 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 348 AM EDT Sun Apr 28 2024

SYNOPSIS
High pressure will prevail through much of next week. A weak disturbance will move through late Tuesday. A weak cold front could approach next weekend.

NEAR TERM /THROUGH TONIGHT/
Early this morning: Patchy stratus and/or stratocumulus will impact parts of the area, along with broken cirrus cloud cover.
There will be a little ground fog, but nothing significant.
Temperatures will range from the mid and upper 50s far inland to the mid and upper 60s close to the coast.

For today: Ridging will dominate both at the surface and aloft, and the associated subsidence and a dry layer from about 850 mb to 500 mb will result in a rainfree day. For most places this will be the 7th day in a row without rainfall. Cirrus will continue to stream through, while scattered to broken stratocumulus and flat cumulus will also occur, especially near and along the inland moving sea breeze. The sky condition will average out to be partly sunny. Max temperatures will be very similar to yesterday, with little overall change in air mass, and highs in the upper 70s and lower 80s away from the immediate coast.

Tonight: Ridging again prevails both at the surface and aloft.
Winds will decouple quickly this evening, with geostrophic winds at 1000 mb no more than 5 or 10 kt. With mainly just few- scattered cirrus for much of the night, this will set up good radiational cooling. We'll end up a bit cooler than it was early this morning, with actual min temperatures close to climo. There is still enough moisture in the boundary layer to produce some late night stratus/stratocumulus and maybe a little fog. Since the bulk of the guidance doesn't have any reduction in visibilities, there is no mention of fog in the forecast.

SHORT TERM /MONDAY THROUGH WEDNESDAY/
Deep layered ridging will persist on Monday with dry weather and a gradual warming trend. Highs should reach the lower 80s away from the coast, with upper 70s closer to the coast due to a persistent onshore flow.

A fairly strong upper shortwave will move into southern SC Tuesday afternoon, accompanied by a slug of moisture. Isolated showers and tstms are possible mainly in the afternoon.
Increasing thicknesses should yield highs in the mid 80s away from the coast.

There are some model differences with how quickly the shortwave moves off the coast Wednesday morning. Decent low-level convergence expected during the afternoon between prevailing weak NW flow and a developing sea breeze. Since some of the guidance is now showing convection on Wednesday, we penciled in a slight chance PoP inland. The warming trend will continue with highs climbing into the upper 80s.

LONG TERM /WEDNESDAY NIGHT THROUGH SATURDAY/
An upper ridge will expand over the area Wednesday night and Thursday, then a zonal flow will persist into the weekend. Above normal temperatures will prevail. A weak cold front could approach during the weekend, potentially bringing scattered showers and thunderstorms.

AVIATION /07Z SUNDAY THROUGH THURSDAY/
VFR conditions are expected to prevail at KCHS, KJZI, and KSAV through 06Z Monday.

Persistent boundary layer moisture will bring the potential for increasing low level clouds this morning, as patchy MVFR stratus/stratocumulus could develop, especially at KSAV.

All sites will also experience broken 3500-4000 ft ceilings for a few hours before the sea breeze passes inland this afternoon, followed by some gusts of 15 or 20 kt in its wake.

Extended Aviation Outlook: Prevailing VFR.

MARINE
Today: A 1027 mb high initially off the Delmarva and Outer Banks of North Carolina will sag south through the day, becoming more east-west oriented by late day, with the center about halfway bewteen Bermuda and the local waters. Winds through the day will be E or SE, no more than about 10 or 15 kt. The favorable onshore fetch will result in seas up to 6 or 7 feet on the outer Georgia waters, where we maintain Small Craft Advisory. the nearshore waters will have seas of 3-5 feet.

Tonight: the high shifts a little further south, but maintains its hold on the coastal waters. The resulting gradient becomes quite slackened, and once sea breeze influences wane in the evening, SE winds will be only around 10 kt or less. Seas will be 3 to 5 feet, highest on the Georgia waters beyond 20 nm offshore.

Fairly quiet marine conditions expected Monday through Friday as Atlantic high pressure remains in place. Sustained winds will generally be no higher than 10-15 kt with seas no higher than 4 ft. A decent afternoon sea breeze is expected each day along the coast, with occasional gustiness in Charleston Harbor.

Rip Currents: Onshore winds and small swells will lead to a Moderate Risk of rip currents at all beaches today.



CHS WATCHES/WARNINGS/ADVISORIES
GA...None.
SC...None.
MARINE...Small Craft Advisory until 6 PM EDT this evening for AMZ374.

toggle option: (graph/table)

Savannah (Bull Street)
Click for Map
Sun -- 12:03 AM EDT     Moonrise
Sun -- 06:40 AM EDT     Sunrise
Sun -- 06:46 AM EDT     0.47 feet Low Tide
Sun -- 09:46 AM EDT     Moonset
Sun -- 12:06 PM EDT     7.24 feet High Tide
Sun -- 06:35 PM EDT     0.47 feet Low Tide
Sun -- 08:03 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION

Savannah (Bull Street), Georgia, Tide feet

Savannah River Entrance
Click for Map
Sun -- 12:02 AM EDT     Moonrise
Sun -- 12:55 AM EDT     -0.00 knots Slack
Sun -- 03:59 AM EDT     -1.88 knots Max Ebb
Sun -- 06:39 AM EDT     Sunrise
Sun -- 07:22 AM EDT     0.00 knots Slack
Sun -- 09:43 AM EDT     1.59 knots Max Flood
Sun -- 09:45 AM EDT     Moonset
Sun -- 01:07 PM EDT     -0.00 knots Slack
Sun -- 03:51 PM EDT     -1.57 knots Max Ebb
Sun -- 07:01 PM EDT     0.00 knots Slack
Sun -- 08:02 PM EDT     Sunset
Sun -- 09:55 PM EDT     1.96 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION

Savannah River Entrance, Georgia Current, knots

Full Color Weather Map

Link to Loop


Other links: GEOS-West     Contential US     Full GOES-East

Charleston, SC,