Tuesday, March26, 2019 L-36.com


Marine Weather and Tides
Thunderbolt, GA

Version 3.4
What's New / NOTES
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 7:18AMSunset 7:40PM Tuesday March 26, 2019 6:44 AM EDT (10:44 UTC) Moonrise 12:00AMMoonset 10:25AM Illumination 71% Phase: Waning Gibbous; Moon at 20 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- 333 Am Edt Tue Mar 26 2019
.small craft advisory in effect from this afternoon through this evening...
.gale warning in effect from this evening through Wednesday morning...
Today..NW winds 10 kt, becoming N late this morning, then becoming ne with gusts to 20 kt early this afternoon, increasing to 20 to 25 kt with gusts to 30 kt late. Seas 2 ft, building to 3 to 4 ft this afternoon. A chance of showers this afternoon.
Tonight..NE winds 25 to 30 kt with gusts to 35 kt. Seas 4 to 6 ft, building to 5 to 7 ft after midnight. A slight chance of showers in the evening.
Wed..NE winds 20 to 25 kt, with gusts to 35 kt in the morning. Seas 5 to 7 ft.
Wed night..NE winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Seas 5 to 7 ft.
Thu..NE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft.
Thu night..NE winds 10 to 15 kt. Seas 4 to 5 ft.
Fri..NE winds 10 kt. Seas 3 to 4 ft.
Fri night..E winds 5 to 10 kt. Seas 3 ft.
Sat..S winds 5 to 10 kt. Seas 3 ft.
Sat night..S winds 5 to 10 kt. Seas 3 ft.
AMZ300 333 Am Edt Tue Mar 26 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A strong cold front will cross the area today followed by high pressure through Saturday. A storm system may affect the area Sunday into early next week.


7 Day Forecast for Marine Location Near Thunderbolt, GA
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location: 32.04, -81.04     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 260746
afdchs
area forecast discussion
national weather service charleston sc
346 am edt Tue mar 26 2019

Synopsis
A strong cold front will cross the area today followed by high
pressure through Saturday. A storm system may affect the area
Sunday into early next week.

Near term through tonight
Today: aloft, the first shortwave will move off the outer banks
this morning as another shortwave and embedded upper low dives
southeastward and into the deep south. At the surface, we start
the day with the leading edge of a backdoor cold front across
the south carolina zones. This front will steadily drop
southward today and will clear the altamaha river late this
afternoon. The main impact of the front will be to usher in
elevated northeast flow, cooler air, and cloud cover for much of
the day. We could also see isolated to scattered showers along
the front as it progresses southward. The best chances for the
tri-county region will be this morning, and then the afternoon
for southeast georgia. Expect a big change in temperatures from
Monday, with highs roughly 15 degrees lower. The forecast
features highs in the low to mid 60s for southeast south
carolina and mainly mid to upper 60s for southeast georgia.

There could be some low 70s south of i-16 where the front will
clear latest. It will be a breezy afternoon, especially at the
coast. Frequent gusts into the 25-30 mph range are expected
along the entire immediate coastline by the late afternoon.

Tonight: any lingering shower activity this evening will be
confined to isolated coverage mainly south of i-16. Thereafter,
the rest of the night will be dry. Skies will clear through the
night and a cool night is on tap. Forecast lows range from the
upper 30s well inland to the low to mid 40s along the coast. The
pressure gradient will tighten overnight as the area gets
situated between high pressure inland and low pressure off the
florida coast. Northeast winds will be strongest along and near
the coast. In fact the immediate coastline will see consistent
gusts to around 30 mph.

Short term Wednesday through Friday
Cool high pressure will persist to the north Wednesday and
Wednesday night, then gradually shift east Thursday into Friday.

Temps on Wednesday will again be in the low to mid 60s.

Wednesday night we could see temps dip into the mid 30s inland,
though a few knots of wind should preclude much of a frost
threat. A rapid warm-up will occur Thursday into Friday with
late week highs reaching the mid upper 70s in most areas.

Long term Friday night through Monday
Warm and dry conditions anticipated Friday night through
Saturday night. A storm system looks to affect the area Sunday
through Tuesday though large model differences exist.

Aviation 08z Tuesday through Saturday
Vfr conditions will prevail for the next few hours and then the
chances for MVFR or ifr ceilings increase just before sunrise.

Area observations show that just upstream there are ifr ceilings
expanding. Introduced MVFR ceilings in the 10-11z time frame,
with a tempo for ifr conditions at kchs for the 10-13z period.

MVFR ceilings will then likely stick around into the afternoon
before improving. Could see isolated showers early at kchs and
then in the afternoon at ksav but the potential for direct
impacts is low. Northeast winds will produce low end gusts in
the 18-20 knot range today.

Extended aviation outlook:VFR.

Marine
Today: a strong backdoor cold front will steadily drop
southeast across the local waters today. As it does,
northeasterly winds will strengthen through the day. Solid small
craft advisory conditions are expected for all zones including
the charleston harbor, with various beginning times. The
advisory conditions start first in the charleston county waters
and gradually spread southward with time. By late afternoon
frequent gusts to 30 knots can be expected starting somewhere
around 5-10 nm offshore. Seas will increase from north to south
today. By late afternoon, the forecast features 3-5 feet in the
nearshore waters and 5-7 feet in the outer waters.

Tonight: as we approach midnight, the northeast gradient will
become further enhanced as a surface low starts to deepen off
the florida coast. This will drive wind speeds higher and
confidence has increased in the potential for gales everywhere
outside of the charleston harbor. Frequent gusts to around 35
knots in the nearshore waters and up to 40 knots in the outer
waters. Gale warnings have been issued, beginning in the evening
for the outer georgia waters and around midnight for the
nearshore waters. High end small craft advisor conditions are
expected in charleston harbor, with frequent gusts to around 30
knots. Seas will increase in response to the surging northeast
winds. For the nearshore waters, 5-8 can be expected, and up to
11 feet in the outer waters.

Gale conditions will continue through Wednesday morning across
the nearshore waters and into Wednesday evening for the ga
offshore waters. A period of small craft advisories will likely
be needed once the gales drop off, with SCA conditions
potentially lingering into Thursday night. A southerly flow will
return this weekend, then unsettled conditions will be possible
late weekend into early next week as a storm system moves
through.

Rip currents: there could be an enhanced risk for rip currents
Wednesday or Thursday as elevated northeast winds and moderate
swell impact the beaches.

Tides coastal flooding
A strong northeast fetch will produce positive tidal anomalies
through Wednesday or Thursday. There is a low chance for tidal
flooding mainly Tuesday night though the anomaly would need to
be 1.5-2.0 ft to reach advisory thresholds which is somewhat
unlikely.

Equipment
The kclx radar remains out of service until further notice.

Additional parts are on order and the radar will be serviced
again on Tuesday.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... Small craft advisory from 2 pm this afternoon to 6 pm edt
Wednesday for amz330.

Small craft advisory from 2 pm this afternoon to 11 pm edt
this evening for amz352.

Gale warning from 11 pm this evening to noon edt Wednesday for
amz350-352-354.

Small craft advisory from 11 am this morning to 11 pm edt this
evening for amz350.

Small craft advisory from 2 pm this afternoon to 6 pm edt this
evening for amz374.

Gale warning from 6 pm this evening to 10 pm edt Wednesday for
amz374.

Small craft advisory from 4 pm this afternoon to 11 pm edt
this evening for amz354.

Near term... Bsh
short term... Jrl
long term... Jrl
aviation... Bsh jrl
marine... Bsh jrl
tides coastal flooding...

equipment...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 7 mi51 min 58°F 60°F1014.3 hPa
41033 37 mi37 min WNW 14 G 19 59°F 62°F1013.5 hPa
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 45 mi55 min W 14 G 18 62°F 62°F1 ft1013.8 hPa (-1.5)57°F
SAXG1 - Sapelo Island Reserve, GA 45 mi105 min W 6 59°F 1014 hPa (-3.0)56°F
ACXS1 - ACE Basin Reserve, SC 47 mi120 min WSW 1 57°F 1013 hPa56°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, GA6 mi49 minW 610.00 miFair54°F51°F91%1013.8 hPa
Savannah-Hilton Head International Airport, GA11 mi52 minWNW 610.00 miFair55°F54°F96%1014.4 hPa
Hilton Head Island, Hilton Head Airport, SC22 mi70 minW 810.00 miFair57°F55°F94%1014.2 hPa

Wind History from SVN (wind in knots)
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Last 24hrCalm--S5SW6SW9SW8
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1 day agoCalmCalmCalmE8E10SE9SE10E8E6
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2 days agoNW4N3N9NE9E12E15E11E12E9E11E6SE8E8SE6E4CalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Thunderbolt, Wilmington River, Georgia
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Thunderbolt
Click for Map
Tue -- 12:46 AM EDT     Moonrise
Tue -- 01:28 AM EDT     8.35 feet High Tide
Tue -- 07:20 AM EDT     Sunrise
Tue -- 07:26 AM EDT     0.22 feet Low Tide
Tue -- 11:25 AM EDT     Moonset
Tue -- 01:47 PM EDT     7.36 feet High Tide
Tue -- 07:31 PM EDT     0.48 feet Low Tide
Tue -- 07:39 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.58.38.27.25.53.51.50.40.41.42.94.66.17.17.36.65.23.41.70.60.61.42.84.4

Tide / Current Tables for Savannah River Entrance, Georgia Current
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Savannah River Entrance
Click for Map
Tue -- 12:45 AM EDT     Moonrise
Tue -- 02:09 AM EDT     -0.00 knots Slack
Tue -- 05:34 AM EDT     -2.21 knots Max Ebb
Tue -- 07:19 AM EDT     Sunrise
Tue -- 08:17 AM EDT     0.01 knots Slack
Tue -- 10:43 AM EDT     1.92 knots Max Flood
Tue -- 11:24 AM EDT     Moonset
Tue -- 02:19 PM EDT     -0.00 knots Slack
Tue -- 05:22 PM EDT     -1.88 knots Max Ebb
Tue -- 07:38 PM EDT     Sunset
Tue -- 08:24 PM EDT     0.00 knots Slack
Tue -- 11:07 PM EDT     2.03 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.71.10.2-1-1.8-2.1-2.2-1.6-0.40.91.71.91.61.10.3-0.7-1.6-1.9-1.8-1.4-0.50.71.72

Weather Map and Satellite Images
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GOES Local Image of    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.
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Wind Forecast for Charleston, SC (6,6,7,8)
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Ground Weather Radar Station Charleston, SC
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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.