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Marine Weather and Tides
Version 3.4 |
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome. 10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name. |
| Sunrise 6:51AM | Sunset 5:25PM | Wednesday November 14, 2018 12:11 AM EST (05:11 UTC) | Moonrise 12:39PM | Moonset 11:27PM | Illumination 36% |  |
AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm, Including Grays Reef National Marine Sanctuary- 949 Pm Est Tue Nov 13 2018
.gale warning in effect from Wednesday afternoon through late Wednesday night...
Tonight..N winds 15 to 20 kt. Seas 3 to 4 ft. A chance of showers.
Wed..NE winds 20 to 25 kt, increasing to 25 to 30 kt with gusts to 35 kt in the afternoon. Seas 4 to 6 ft, building to 6 to 8 ft in the afternoon. A chance of showers in the morning, then showers likely in the afternoon.
Wed night..NE winds 25 to 30 kt with gusts to 35 kt, diminishing to 20 to 25 kt after midnight. Seas 7 to 9 ft, subsiding to 5 to 7 ft after midnight. Showers.
Thu..NW winds 10 to 15 kt. Seas 4 to 6 ft, subsiding to 4 to 5 ft in the afternoon. Showers, mainly in the morning.
Thu night..NW winds 15 to 20 kt. Seas 3 to 4 ft, building to 4 to 5 ft after midnight.
Fri..NW winds 15 to 20 kt, diminishing to 10 kt in the afternoon. Seas 3 to 4 ft.
Fri night..N winds 10 kt. Seas 3 ft.
Sat..NE winds 5 to 10 kt. Seas 3 ft.
Sat night..NE winds 5 to 10 kt. Seas 2 ft.
Sun..N winds 5 to 10 kt. Seas 2 ft.
Sun night..N winds 5 to 10 kt. Seas 2 ft.
.gale warning in effect from Wednesday afternoon through late Wednesday night...
Tonight..N winds 15 to 20 kt. Seas 3 to 4 ft. A chance of showers.
Wed..NE winds 20 to 25 kt, increasing to 25 to 30 kt with gusts to 35 kt in the afternoon. Seas 4 to 6 ft, building to 6 to 8 ft in the afternoon. A chance of showers in the morning, then showers likely in the afternoon.
Wed night..NE winds 25 to 30 kt with gusts to 35 kt, diminishing to 20 to 25 kt after midnight. Seas 7 to 9 ft, subsiding to 5 to 7 ft after midnight. Showers.
Thu..NW winds 10 to 15 kt. Seas 4 to 6 ft, subsiding to 4 to 5 ft in the afternoon. Showers, mainly in the morning.
Thu night..NW winds 15 to 20 kt. Seas 3 to 4 ft, building to 4 to 5 ft after midnight.
Fri..NW winds 15 to 20 kt, diminishing to 10 kt in the afternoon. Seas 3 to 4 ft.
Fri night..N winds 10 kt. Seas 3 ft.
Sat..NE winds 5 to 10 kt. Seas 3 ft.
Sat night..NE winds 5 to 10 kt. Seas 2 ft.
Sun..N winds 5 to 10 kt. Seas 2 ft.
Sun night..N winds 5 to 10 kt. Seas 2 ft.
AMZ300 949 Pm Est Tue Nov 13 2018
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A series of storm systems will impact the area through mid week with cool and dry high pressure returning by this weekend. A mainly dry cold front could move through early next week.
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A series of storm systems will impact the area through mid week with cool and dry high pressure returning by this weekend. A mainly dry cold front could move through early next week.
7 Day Forecast for Marine Location Near Thunderbolt, GA
Hourly EDIT Helplocation: 32.04, -81.04 debug
Area Discussion for - Charleston, SC
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus62 kchs 140332 afdchs area forecast discussion national weather service charleston sc 1032 pm est Tue nov 13 2018 Synopsis A series of storm systems will impact the area through mid week with cool and dry high pressure returning by this weekend. A mainly dry cold front could move through early next week. Near term until 6 am Wednesday morning The cold front over the atlantic will continue to pull away during the overnight. Despite the passage, with considerable moisture in place and over-running moving atop the the cooler surface air mass behind the front, ana-type light rains will continue to impact the area. Pop has been lowered to no more than 20-40%, since some drier air is working its way in between about 1500 and 4000 ft above the sharp inversion. Widespread low stratus will equate to some reduction in surface visibilities. But with geostrophic winds increasing to as high as 20-30 kt, this is far too much to indicate any fog in the forecast. There is only weak cool advection, and with good mixing and overcast skies, temps won't fall much more than about another 3-6f through the remainder of the night. Short term 6 am Wednesday morning through Friday Unsettled weather is expected Wednesday and Thursday. Wednesday and Thursday: the mid-levels will consist of a trough over the ms valley Wednesday morning, with a strong low over the arklatex region. The low will move over the tn valley by Thursday morning, then towards the mid-atlantic states Thursday night. Overall, southwest flow will prevail over our area. Most of the energy associated with the trough is expected to pass just to our northwest. Though, some jet stream energy may move overhead Thursday night. At the surface, a front will be offshore Wednesday morning. Low pressure is expected to develop over fl Wednesday evening, then move to the northeast. The low is expected to strengthen as it parallels our coastline Wednesday night, moving to our northeast on Thursday. High pressure is expected to build from the northern gulf of mexico Thursday night. Plenty of moisture is in place across the region. Pwats may approach 1.8" Wednesday night, which is 2 standard deviations above normal per naefs. With great model agreement, with have pops ramping up during the day Wednesday, becoming categorical Wednesday night. Pops will increase from southwest to northeast Thursday. Dry conditions are expected Thursday night. Several inches of rain are expected during this time period. Flash flooding isn't expected. However, there could be some flooding of low-lying or poorly drained areas during the heaviest rainfall. There is very little instability in place, so the risk of thunderstorms is very low. Temperatures will be well below normal during this time period. Friday: high pressure will build across the northern gulf of mexico, with its eastern periphery extending into our area. Strong subsidence will lead to dry conditions and mostly sunny skies. Additionally, cold air advection within northwest surface winds will continue the trend of below normal temperatures. Highs may be about 10 degrees below normal. Long term Friday night through Tuesday Dry weather will prevail through early next week as cooler high pressure moves into the area. Another reinforcing mostly dry cold front could move through Sunday night. Temperatures should be near to below normal. Aviation 03z Wednesday through Sunday The terminals will generally be stuck within ifr conditions, mainly due to ceilings through the latest forecast cycle. This will occur as considerable moisture gets trapped beneath a developing wedge inversion, while a wave of low pressure and associated warm front across the eastern gulf of mexico and |
florida lifts north-northeast later tonight and Wednesday. There is probably too much wind and mixing to cause airfield minimums to occur, but we continue to monitor since conditions at times will be close. Patchy light rains will continue to taper off tonight, before returning again Wednesday afternoon. NE winds will reach 15-20 kt, and maybe even occasionally higher Wednesday as the gradient pinches between the frontal system to the south and the wedge inland. Extended aviation outlook: a series of storm systems will bring flight restrictions into Wednesday night. Conditions will improve Thursday as the system moves away.VFR is expected Friday through Sunday. Marine Overnight: the cold front has shifted east and southeast of the local waters, and the pressure gradient will steadily tighten between the departing front and continental high pressure centered from the upper midwest to texas. We have maintained the small craft advisory for amz350 and amz374 for n-ne winds as high as 25 kt, but conditions will hold just below advisory levels elsewhere in the atlantic and in charleston harbor. Seas will build as high as 4 or 5 ft within 20 nm and up to 6 ft on the outer georgia waters. Wednesday through Sunday: the surface pressure gradient will become enhanced Wednesday, especially as a strengthening low moves from southwest to northeast across the coastal waters Wednesday night. Gale force gusts are expected, so we issued gale warnings for all of the coastal waters Wednesday into Wednesday night. Steep, wind-driven seas will build in response to these winds, with seas peaking at or above 10 ft at 10 nm and beyond. Winds will quickly ease Thursday as the low moves away. Though, elevated seas could persist across the offshore ga waters into Friday. High surf: gale conditions will cause seas to build Wednesday into Wednesday night. Five foot breakers are expected in the surf zone, especially along northeast facing beaches. A high surf advisory is in effect. Chs watches warnings advisories Ga... High surf advisory from 11 am Wednesday to 5 am est Thursday for gaz117-119-139-141. Sc... High surf advisory from 11 am Wednesday to 5 am est Thursday for scz051. High surf advisory from 8 am Wednesday to 8 am est Thursday for scz048>050. Marine... Gale warning from noon Wednesday to 1 am est Thursday for amz352-354-374. Small craft advisory until 9 am est Wednesday for amz350. Gale warning from 9 am Wednesday to 3 am est Thursday for amz350. Small craft advisory until noon est Wednesday for amz374. Small craft advisory from 7 am Wednesday to 4 am est Thursday for amz330. Near term... short term... long term... aviation... 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 |
| FPKG1 - 8670870 - Fort Pulaski, GA | 7 mi | 41 min | N 2.9 G 4.1 | 60°F | 67°F | 1021 hPa | ||
| 41033 | 37 mi | 63 min | Calm G 0 | |||||
| SAXG1 - Sapelo Island Reserve, GA | 45 mi | 71 min | N 6 | 62°F | 1020 hPa (+1.0) | 61°F | ||
| 41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA | 45 mi | 81 min | N 18 G 19 | 66°F | 72°F | 4 ft | 1020 hPa (+1.2) | 63°F |
| ACXS1 - ACE Basin Reserve, SC | 47 mi | 86 min | WNW 1 | 59°F | 1021 hPa | 59°F |
Wind History for Fort Pulaski, GA
(wind in knots) EDIT (on/off) Help| 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 | |
| Last 24hr | SW G7 | W | SW G8 | W | NW | NW | NW | SW | SW G10 | SW | SW | SW | SW | S G7 | S G8 | N | N | N | NW | N G11 | NW | N | N | NW |
| 1 day ago | NE G16 | NE | NE | N | N G12 | N | NE | NE | NE | NE G13 | NE | NE G11 | NE | NE | N G7 | NE | NE | E | E | N | SE | N | S | S |
| 2 days ago | NE G18 | NE G17 | NE G17 | NE G14 | N G16 | NE G14 | N | NE G16 | NE G14 | NE G15 | NE | NE G15 | NE G14 | NE G12 | NE G16 | NE G12 | NE G11 | NE | NE G14 | N | NE G16 | NE G17 | NE | NE G18 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Hunter U. S. Army Airfield, GA | 6 mi | 75 min | N 0 | 10.00 mi | Overcast | 59°F | 56°F | 90% | 1020.6 hPa |
| Savannah-Hilton Head International Airport, GA | 11 mi | 18 min | NNW 9 | 7.00 mi | Overcast | 58°F | 57°F | 97% | 1021.2 hPa |
| Hilton Head Island, Hilton Head Airport, SC | 22 mi | 16 min | N 0 | 8.00 mi | Light Drizzle | 61°F | 59°F | 94% | 1020.7 hPa |
Wind History from SVN (wind in knots)
| 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 | |
| Last 24hr | S | Calm | Calm | Calm | Calm | Calm | Calm | S | SW | SW | SW | SW | SW | SW | NW | N | NE | N | NW | N | N | N | Calm | |
| 1 day ago | N | NE | Calm | NE | N | N | NE | NE | N | N | NE | NE | Calm | NE | NE | NE | NE | E | E | Calm | W | Calm | Calm | SE |
| 2 days ago | NE | NE | N | NE | NE | NE | NE | NE | NE | N | NE | NE | N | N | E | NE | NE | NE | NE | NE | NE | NE | NE | NE |
Tide / Current Tables for Thunderbolt, Wilmington River, Georgia
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of DataThunderbolt
Click for Map
Wed -- 12:47 AM EST 7.13 feet High Tide
Wed -- 06:19 AM EST 1.62 feet Low Tide
Wed -- 06:51 AM EST Sunrise
Wed -- 12:39 PM EST Moonrise
Wed -- 01:17 PM EST 7.80 feet High Tide
Wed -- 05:24 PM EST Sunset
Wed -- 07:11 PM EST 1.68 feet Low Tide
Wed -- 11:26 PM EST Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 12:47 AM EST 7.13 feet High Tide
Wed -- 06:19 AM EST 1.62 feet Low Tide
Wed -- 06:51 AM EST Sunrise
Wed -- 12:39 PM EST Moonrise
Wed -- 01:17 PM EST 7.80 feet High Tide
Wed -- 05:24 PM EST Sunset
Wed -- 07:11 PM EST 1.68 feet Low Tide
Wed -- 11:26 PM EST 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 |
| 6.9 | 7.1 | 6.5 | 5.2 | 3.7 | 2.4 | 1.7 | 1.8 | 2.6 | 3.9 | 5.2 | 6.4 | 7.3 | 7.8 | 7.6 | 6.6 | 5.2 | 3.6 | 2.3 | 1.7 | 1.9 | 2.8 | 3.9 | 5.1 |
Tide / Current Tables for Savannah River Entrance, Georgia Current
EDIT (on/off) Help One Week of DataSavannah River Entrance
Click for Map
Wed -- 01:29 AM EST -0.00 knots Slack
Wed -- 03:57 AM EST -1.35 knots Max Ebb
Wed -- 06:51 AM EST Sunrise
Wed -- 07:31 AM EST 0.00 knots Slack
Wed -- 10:08 AM EST 1.54 knots Max Flood
Wed -- 12:38 PM EST Moonrise
Wed -- 02:01 PM EST -0.00 knots Slack
Wed -- 05:14 PM EST -1.53 knots Max Ebb
Wed -- 05:24 PM EST Sunset
Wed -- 08:16 PM EST 0.00 knots Slack
Wed -- 10:43 PM EST 1.56 knots Max Flood
Wed -- 11:26 PM EST Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 01:29 AM EST -0.00 knots Slack
Wed -- 03:57 AM EST -1.35 knots Max Ebb
Wed -- 06:51 AM EST Sunrise
Wed -- 07:31 AM EST 0.00 knots Slack
Wed -- 10:08 AM EST 1.54 knots Max Flood
Wed -- 12:38 PM EST Moonrise
Wed -- 02:01 PM EST -0.00 knots Slack
Wed -- 05:14 PM EST -1.53 knots Max Ebb
Wed -- 05:24 PM EST Sunset
Wed -- 08:16 PM EST 0.00 knots Slack
Wed -- 10:43 PM EST 1.56 knots Max Flood
Wed -- 11:26 PM EST 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 |
| 0.9 | 0.4 | -0.4 | -1.1 | -1.4 | -1.2 | -1 | -0.4 | 0.4 | 1.2 | 1.5 | 1.4 | 1.1 | 0.7 | 0 | -0.8 | -1.4 | -1.5 | -1.5 | -1.1 | -0.3 | 0.7 | 1.4 | 1.5 |
Weather Map and Satellite Images
(on/off) HelpWeather Map
GOES 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 (0,6,7,8)
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Ground Weather Radar Station Charleston, SC
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Disclaimer: The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program. |