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AMZ352 Waters From Edisto Beach Sc To Savannah Ga Out 20 Nm- 510 Am Est Mon Dec 11 2023
.small craft advisory in effect until 10 am est this morning...
Today..N winds 15 to 20 kt with gusts to 25 kt, diminishing to 5 to 10 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft this afternoon.
Tonight..N winds 10 to 15 kt. Seas 3 to 4 ft.
Tue..NE winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Tue night..NE winds 15 to 20 kt. Seas 3 to 4 ft.
Wed..NE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft.
Wed night..NE winds 20 to 25 kt, increasing to 25 to 30 kt after midnight. Seas 4 to 6 ft, building to 5 to 7 ft after midnight.
Thu..NE winds 25 to 30 kt. Seas 6 to 8 ft.
Thu night..NE winds 20 to 25 kt. Seas 6 to 8 ft.
Fri..NE winds 20 to 25 kt. Seas 6 to 8 ft.
Fri night..NE winds 15 to 20 kt. Seas 5 to 7 ft. A slight chance of showers.

AMZ300 510 Am Est Mon Dec 11 2023
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Cool high pressure will build over the area this week. A coastal low pressure system may impact the area next weekend.

FXUS62 KCHS 111107 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 607 AM EST Mon Dec 11 2023

SYNOPSIS
Cool high pressure will build over the area this week. A coastal low pressure system may impact the area next weekend.

NEAR TERM /THROUGH TONIGHT/
IR satellite detected an expansive area of low clouds across SE GA/SC early this morning. In fact, just before dawn, KCLX detected a few streaks of drizzle just west of I-26. The clouds and patches of drizzle should steadily push to the east in the wake of the departing cold front. During the first hour or two of daylight, sky conditions should become clear to mostly clear.
The forecast area will remain between a cold front over the western Atlantic and high pressure centered over TN today. This pattern will provide the region with steady NW winds through the day. As a result, NAM indicates that H85 temps will cool through the day. The H85 temp over KSAV should begin the day at 5.5C cooling to 3.5C by sunset. Temperatures are forecast to remain around 10 degrees below normal, highs favoring values in the mid 50s.

Tonight, the center of high pressure is expected to remain over the southern Appalachians. There should be enough pressure gradient to support a NE winds between 3-5 mph through the night. Otherwise, conditions will be favorable for radiational cooling, clear sky with a very dry environment. Using a blend of MOS, low temperatures are forecast to range from the upper 20 inland to the upper 30s along the coast.

SHORT TERM /TUESDAY THROUGH THURSDAY/
Cool and dry high pressure will expand across the area from the northwest. Mostly sunny skies expected Tuesday, then extensive high cirrus will overspread the area Tuesday night and continue through Thursday. Downslope flow will help push highs into the mid/upper 50s Tuesday and lower 60s Wednesday. We'll lose the downslope component on Thursday as a reinforcing cold front drops through from the north, so Thursday will mainly be in the mid 50s.

LONG TERM /THURSDAY NIGHT THROUGH SUNDAY/
The forecast remains fairly uncertain late week into next weekend due to model differences regarding a possible coastal low. We stuck pretty close to the NBM for PoPs brings slight chance showers Saturday and chance showers Sunday into Monday.

AVIATION /12Z MONDAY THROUGH FRIDAY/
Prior to the 12Z TAFs: IR satellite indicated ragged areas of MVFR ceilings over and near the terminals. Based on satellite trends, the clouds should push east of the terminals between 12-13Z. By 13Z, cloud cover should decrease, or become clear.
Clear and VFR conditions will remain through the TAF period.
Winds should favor a NW direction between 10-15 kts during the daylight hours, veering from the NE at 5kts this evening and overnight.

Extended Aviation Outlook: VFR.

MARINE
Cold air advection and a weakening pressure gradient should maintain gusts around 25 kts early this morning. By mid-morning, NW gusts will decrease across the nearshore GA and lower SC waters. Small Craft Advisories for AMZ354 and 352 are in effect until 10 AM.
Northwest wind gusts and 6 ft seas may linger until noon across the outer GA and Charleston Co nearshore waters. Small Craft Advisories for AMZ374 and 350 are scheduled to end by noon. This afternoon through tonight, high pressure will increase across the marine zones. Winds are forecast to veer from the NE this evening, remaining tonight between 10-15 kts. Seas are forecast to range between 3-5 ft tonight.

Tuesday will feature moderate NE winds as high pressure continues to expand north of the region. The gradient will tighten late Tuesday night into Wednesday as an inverted trough develops well offshore. Seas will also continue to steadily build due to the persistent flow and long fetch. Small Craft Advisories will likely be needed beginning as early as late Tuesday night for all waters outside Charleston Harbor. We may actually need Gale headlines at some point Wednesday night into Thursday due to frequent 35 kt gusts. Otherwise, SCA conditions will continue all the way into next weekend as strong high pressure remains north of the waters.

EQUIPMENT
KCLX remains operational, but level 2 data is not being distributed to external users due to an internal hardware failure. We are still awaiting the arrival of new parts to resolve this problem. Until then, level 2 data will not be available. Radar data is available for all connected AWIPS users. Level 3 data is also available for some external users.

CHS WATCHES/WARNINGS/ADVISORIES
GA...None.
SC...None.
MARINE...Small Craft Advisory until noon EST today for AMZ350-374.
Small Craft Advisory until 10 AM EST this morning for AMZ352- 354.

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RR. Bridge
Click for Map
Mon -- 01:33 AM EST     0.23 feet Low Tide
Mon -- 05:55 AM EST     Moonrise
Mon -- 07:14 AM EST     Sunrise
Mon -- 08:09 AM EST     8.92 feet High Tide
Mon -- 02:24 PM EST     0.39 feet Low Tide
Mon -- 04:05 PM EST     Moonset
Mon -- 05:18 PM EST     Sunset
Mon -- 08:22 PM EST     7.77 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

RR. Bridge, Hall Island, South Carolina, Tide feet

North Dawson Landing
Click for Map
Mon -- 02:19 AM EST     0.25 feet Low Tide
Mon -- 05:55 AM EST     Moonrise
Mon -- 07:15 AM EST     Sunrise
Mon -- 09:04 AM EST     8.54 feet High Tide
Mon -- 03:10 PM EST     0.42 feet Low Tide
Mon -- 04:05 PM EST     Moonset
Mon -- 05:18 PM EST     Sunset
Mon -- 09:17 PM EST     7.44 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

North Dawson Landing, Coosawhatchie River, South Carolina, Tide feet

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