Wednesday, August4, 2021
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Marine Weather and Tides
Midway, GA

Version 3.4
NOTICE
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 6:43AMSunset 8:21PM Wednesday August 4, 2021 3:42 PM EDT (19:42 UTC) Moonrise 1:56AMMoonset 4:38PM Illumination 13% Phase: Waning Crescent; Moon at 26 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm, Including Grays Reef National Marine Sanctuary- 321 Pm Edt Wed Aug 4 2021
Tonight..E winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers this evening.
Thu..NE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers with a slight chance of tstms.
Thu night..SE winds 5 to 10 kt, becoming S after midnight. Seas 2 to 3 ft. A chance of showers with a slight chance of tstms.
Fri..S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers with a slight chance of tstms in the morning, then showers likely with a chance of tstms in the afternoon.
Fri night..S winds 10 kt. Seas 2 to 3 ft. A chance of tstms. Showers likely, mainly in the evening.
Sat..SW winds 10 kt. Seas 2 to 3 ft. A chance of tstms. A chance of showers in the morning, then showers likely in the afternoon.
Sat night..SW winds 10 kt. Seas 2 to 3 ft. A chance of tstms. Showers likely, mainly in the evening.
Sun..SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Sun night..S winds 5 to 10 kt. Seas 2 ft. A slight chance of showers and tstms.
Mon..S winds 5 to 10 kt. Seas 2 ft. A slight chance of showers and tstms.
Mon night..S winds 5 to 10 kt. Seas 2 ft. A slight chance of showers and tstms. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 321 Pm Edt Wed Aug 4 2021
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A stalled front will linger over or near the area through the week. More typical summertime weather should then return early next week.


7 Day Forecast for Marine Location Near Midway, GA
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location: 31.73, -81.21     debug


Area Discussion for - Charleston, SC
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FXUS62 KCHS 041657 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 1257 PM EDT Wed Aug 4 2021

SYNOPSIS. A stalled front will linger over or near the area through the week. More typical summertime weather should then return early next week.

NEAR TERM /THROUGH TONIGHT/. The forecast area remains weakly wedged in an almost cold-air- damming set up. A stationary front is located offshore, accompanied by a surface low pressure in the vicinity of the Outer Banks along with a ridge of high pressure over the Carolinas. This set up has created a ridge along the east facing slopes of the Appalachian Mountains. A low stratus deck remains positioned over the region. Circulation between the low and the surface ridge will support northerly to northeasterly winds which are reinforcing the stratus deck, along with advecting dew points in the 60s into the region. The stratus deck is forecast to erode over southeastern GA later this afternoon, however models are in good agreement that the stratus deck will remain positioned over the SC Lowcountry.

Temperatures are struggling to rise above the low to mid 70s so far today. As the stratus layer erodes over southeastern GA they should jump into the low to mid 80s under the early August sun. However, the SC Lowcountry will struggle to make it out of the 70s and high temperatures have been adjusted to reflect this.

Instability is extremely limited due to the thick, low stratus layer. Therefore, showers will struggle to develop. The 12Z runs of both the HRRR and HREF continue to show minimal shower activity and POPs have been lowered once more. Any shower activity present later this afternoon would most likely form along the coastline or possibly advected in from the north. Thunder probabilities remain very low so have maintained showers as the convective mode.

A similar story for tonight with deep layer northerly to northeasterly flow persisting across the region, cooler temperatures and meager instability. Again, a few showers off the Atlantic may drift into a few coastal areas through the night. But overall, anticipate a dry night with temperatures dipping into the upper 60s well inland to the middle 70s along the coast.

SHORT TERM /THURSDAY THROUGH SATURDAY/. Thursday: A stationary front will linger just offshore during the day then shift north overnight. With shortwave energy moving through the area, there will be enough isentropic lift to support showers. Although, the better moisture (PWATS>2.0) will be just along the coast and over the waters. Therefore, there is potential for inland areas to stay mostly dry. Due to the 00Z model guidance, have lowered POPs to slight chance to chance as coverage should be less than originally expected. With heavy bouts of rain in previous days, minor flooding will be possible if a showers train or one area has multiple showers. WPC has outlooked the SE GA and SE SC coast in a marginal risk for excessive rainfall. Surface-based cape will be less than 1500 J/kg so do not expect severe weather. Though, have left mention of thunder in the forecast. High temperatures will be in the 80s. Lows will be in the upper 60s to mid 70s.

Friday: Another tricky rain forecast will likely ensue. Ridging across the Atlantic will shift closer to the area as a mid-level trough moves eastward across the central U.S. Regardless, there is potential for a wet day. PWATs will once again be over 2.5 inches in some areas and WPC has outlooked the entire forecast area in a marginal risk for excessive rainfall. Rain should be focused along the SE GA coast in the morning then shift northeast throughout the day. Surface-based cape has potential to be above 2000 J/kg but the instability will greatly depend on the overnight and morning cloud cover. A stronger thunderstorm or two cannot be ruled out at this point. Although, the main hazard will be minor flooding in poor- drainage areas and low-lying areas as well as in areas with quite saturated soils. Highs will be in the 80s with lows in the 70s.

Saturday: A mid-level trough will weaken as Atlantic high pressure moves into the region and a stationary front weakens. While subsidence will attempt to overcome deep moisture, PWATs will remain elevated and there will be lingering shortwave energy. Therefore, another rainy day is expected with a chance of thunderstorms. Although, parameters do not look as impressive as Friday so expect less coverage of precip. As heights begin to slowly rise, temperatures will creep back into the upper 80s to low 90s.

LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/. On Sunday, mid-level troughing should quickly move further away from the region, giving way to deep layer ridging. A typical summer-like pattern is expected to return for Monday and Tuesday. Each day in the long-term could see isolated to scattered showers and thunderstorms. Especially along the sea breeze and other boundary interactions that occur. While the overall forecast will be drier, our cooler temperatures will depart. With increasing heights, temperatures will also rise. High temperatures in the upper 80s to mid 90s are expected. Lows will be in the upper 60s to upper 70s.

AVIATION /18Z WEDNESDAY THROUGH MONDAY/. MVFR ceilings will persist into the afternoon at KCHS, KJZI, and KSAV. Ceilings should lift to VFR around 00Z this evening before returning to MVFR for a brief period around 12z Thursday at KCHS and KJZI. VFR thereafter.

Extended Aviation Outlook: Flight restrictions will be possible in showers and thunderstorms mainly in the afternoon/evening. Low clouds and fog will also be possible in the mornings.

MARINE. Through Tonight: Surface wave and boundary off the Carolina coast will edge further offshore today with winds veering north to northeasterly through the Carolina and Georgia waters. Showers and possibly a few storms remain possible through tonight particularly further offshore into the Gulf Stream.

Thursday through Monday: A south to southwest flow will prevail through early next week. Winds will be around 10 to 15 knots with seas 2 to 4 feet.

CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . None. MARINE . None.



NEAR TERM . CPM/TBA SHORT TERM . RJB LONG TERM . RJB AVIATION . CPM/RAD MARINE . RJB/TBA


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAXG1 - Sapelo Island Reserve, GA 22 mi102 min N 6 80°F 1016 hPa (+0.0)79°F
FPKG1 - 8670870 - Fort Pulaski, GA 27 mi54 min 84°F1016 hPa
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 29 mi52 min NNW 9.7 G 12 77°F 84°F3 ft1014.6 hPa (-0.8)77°F

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hunter U. S. Army Airfield, GA21 mi1.8 hrsNE 310.00 miOvercast80°F69°F70%1015.5 hPa
Wright Army Airfield (Fort Stewart)/Midcoast Regional Airport, GA22 mi1.8 hrsNNW 710.00 miMostly Cloudy80°F71°F74%1015.5 hPa

Link to 5 minute data for KSVN

Wind History from SVN (wind in knots)
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Last 24hrCalmCalmSE8CalmCalmCalmW4CalmN3CalmCalmCalmN3N6N4N3N4N5----N6N3N4NE3
1 day agoN3SE8S4
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SW8CalmSW3W8CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmW4CalmN6Calm
2 days agoW11W8SW4S8SW12
G22
SW7SW7SW7SW5SW8SW6CalmW3W4W4SW3CalmCalmW4NW4CalmCalmCalmCalm

Tide / Current Tables for Walburg Creek entrance, Georgia
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Walburg Creek entrance
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Wed -- 12:06 AM EDT     1.41 feet Low Tide
Wed -- 02:55 AM EDT     Moonrise
Wed -- 05:50 AM EDT     6.03 feet High Tide
Wed -- 06:42 AM EDT     Sunrise
Wed -- 12:05 PM EDT     0.71 feet Low Tide
Wed -- 05:38 PM EDT     Moonset
Wed -- 06:16 PM EDT     7.32 feet High Tide
Wed -- 08:18 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.41.72.63.74.95.865.64.73.52.21.20.71.12.23.85.46.77.37.16.35.23.82.5

Tide / Current Tables for Thomas Landing, S. Newport River, Georgia
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Thomas Landing
Click for Map
Wed -- 12:31 AM EDT     1.34 feet Low Tide
Wed -- 02:56 AM EDT     Moonrise
Wed -- 06:31 AM EDT     6.20 feet High Tide
Wed -- 06:43 AM EDT     Sunrise
Wed -- 12:30 PM EDT     0.68 feet Low Tide
Wed -- 05:38 PM EDT     Moonset
Wed -- 06:57 PM EDT     7.53 feet High Tide
Wed -- 08:18 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.41.42.13.14.35.46.16.15.44.32.91.60.80.81.634.66.17.27.57.16.14.73.2

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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