Monday, May27, 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 6:18AMSunset 8:23PM Monday May 27, 2019 1:50 AM EDT (05:50 UTC) Moonrise 1:35AMMoonset 1:03PM Illumination 42% Phase: Third Quarter Moon; Moon at 23 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- 1206 Am Edt Mon May 27 2019
Rest of tonight..SW winds 10 to 15 kt. Seas 1 to 2 ft.
Mon..SW winds 5 to 10 kt. Seas 2 ft.
Mon night..SW winds 5 to 10 kt. Seas 2 ft.
Tue..W winds 5 to 10 kt, becoming S in the afternoon. Seas 2 ft.
Tue night..S winds 10 kt. Seas 2 ft.
Wed..S winds 10 to 15 kt. Seas 2 ft.
Wed night..S winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 ft, building to 3 ft after midnight.
Thu..S winds 10 to 15 kt. Seas 2 to 3 ft.
Thu night..S winds 15 to 20 kt. Seas 3 to 4 ft.
Fri..S winds 10 to 15 kt. Seas 3 ft. A slight chance of showers and tstms.
Fri night..S winds 15 to 20 kt. Seas 3 to 4 ft. A slight chance of showers and tstms. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 1206 Am Edt Mon May 27 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure and unseasonably hot conditions will persist most of this week. Some relief from the oppressive heat is expected by next weekend.


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 270402
afdchs
area forecast discussion
national weather service charleston sc
1202 am edt Mon may 27 2019

Synopsis
High pressure and unseasonably hot conditions will persist most
of this week. Some relief from the oppressive heat is expected
by next weekend.

Near term until 6 am this morning
Climate note: the high temperature was 102 not 101 at sav
today. A corrected clisav will be sent later tonight.

The forecast is on track. Lows will range from the lower-mid
70s inland with mid-upper 70s at the coast and around 80 at the
beaches and downtown charleston.

Short term 6 am this morning through Wednesday
Memorial day through Wednesday: record heat will continue as the
region sits underneath an anomalous mid and upper anticyclone across
the gulf of mexico and florida. At the surface we find an elongated
ridge of high pressure from the atlantic across florida, while a
thermal trough is situated over or near the local region. H5 heights
are as high as 5890-5900 meters Monday, then fall about 10 meters
Tuesday and Wednesday. Even so, all these heights are close to
record levels for late may. Combined with h85 temps that are also
near record may levels at 20-22c and utilizing the low level
thickness forecast scheme, we are still forecasting 100f or greater
across the vast majority of the region all three afternoons. There
will be a sea breeze each day, but it's inland progression will be a
struggle on Monday with it not reaching maybe the us-17 corridor by
late. Because of the onshore circulations, this will at least hold
shoreline temps down to the upper 80s and lower 90s. Night time lows
will struggle to get down to the lower and middle 70s, with even
upper 70s along some coastal locations and in downtown charleston.

Regarding the potential for heat advisories, which we will issue
when the heat index reaches 105f this early in the year, is a
possibility all three afternoons. But with a deep offshore flow, dew
points inland will mix out similar to the past few days. It's over
the coastal counties where our concern is the greatest, as the
pooling of higher dew points in the lower and middle 70s behind the
sea breeze will develop. Since it is still a marginal event for
Monday afternoon, limited in both time and space, we will defer any
advisory to the midnight set of meteorologists.

Unfortunately there is still little or no chance of any much needed
rainfall. There might be a stray short-lived shower on the sea
breeze each afternoon, but pop is no greater than 5 or 10%. Thus we
will add to our ongoing two week stretch where most places have not
received any precipitation during this time.

Long term Wednesday night through Sunday
The mid-level ridge will remain in place Wednesday night, then
finally flatten out Thursday night followed by zonal flow Friday and
Saturday. Surface high pressure will continue to dominate our
weather pattern through Thursday. The models still show a cold front
approaching our area Friday or Saturday. They have trended wetter,
which seems a little suspicious considering the front will be
running into our very dry airmass. We opted to only introduce slight
chance pops Friday and Saturday. But early indications are rainfall
amounts won't put much of a dent in our drought. Temperatures will
trend downwards each day. However, they are still forecasted to
remain above normal.

Aviation 04z Monday through Friday
Vfr.

Extended aviation outlook:VFR.

Marine
Tonight: no significant changes were made. South to southwest
winds to 5 to 15 kt will prevail. Seas will average 2-3 ft,
highest to the east.

Monday through Friday: a huge area of high pressure that covers a
large chunk of the atlantic, with its ridge axis near or just south
of 30 degrees north latitude will dominate the area. This will
produce a general SW flow at or below 15 kt through mid week,
although sea breeze influences will give a little boost to speeds in
charleston harbor and on the amz350 waters each afternoon and early
evening. Seas on average will be 2-3 ft through Wednesday or
Thursday.

Later in the week there is a little stronger pinching of the
gradient around the ridge and an inland trough, so winds and seas do
increase a notch, but nothing high enough for an advisory.

Climate
The ongoing heat wave will challenge or break many of these records:
earliest 100 degree temperatures:
kchs: may 26, 2019 (previously june 2, 1985).

Ksav: may 25, 2019 and 1953.

Kcxm: june 1, 1985.

Monthly record highs for may:
kchs: 100 set may 26, 2019 (previously 99 set may 21, 1938).

Ksav: 102 set may 26, 2019,(previously set may 30, 1898 and may 31,
1945.)
kcxm: 99 set may 21, 1938 and may 26, 1953.

Records for Sun 05 26...

station record high year(s)
------- ----------- -------
kchs 98 1953 ** see rerchs **
ksav 100 1953 ** see rersav **
station record high min year(s)
------- --------------- -------
kchs 75 1998
kcxm 79 1998
records for Mon 05 27...

station record high year(s)
------- ----------- -------
kchs 98 1989
ksav 98 1989, 1962
kcxm 95 1962, 1926
station record high min year(s)
------- --------------- -------
kchs 76 1991
ksav 77 1878
kcxm 78 1991
records for Tue 05 28...

station record high year(s)
------- ----------- -------
kchs 97 1967, 1964
ksav 96 1964, 1898
kcxm 93 2000
station record high min year(s)
------- --------------- -------
kchs 76 2000
ksav 76 1885
kcxm 80 2000
records for Wed 05 29...

station record high year(s)
------- ----------- -------
kchs 95 1945
ksav 98 1945, 1898
station record high min year(s)
------- --------------- -------
kchs 76 2018
ksav 75 1885
kcxm 77 1998
records for Thu 05 30...

station record high year(s)
------- ----------- -------
kchs 95 2004
ksav 101 1898
station record high min year(s)
------- --------------- -------
kchs 75 1982
ksav 75 1924
kcxm 78 1998
records for Fri 05 31...

station record high year(s)
------- ----------- -------
kchs 98 1953
station record high min year(s)
------- --------------- -------
kchs 77 2004
ksav 75 2004
records for Sat 06 01...

station record high min year(s)
------- --------------- -------
kchs 77 1974
ksav 76 1880

Equipment
The downtown charleston (kcxm) observation will be unavailable
until further notice. The cause of the outage is unknown.

Technicians will address the outage on Tuesday.

Wfo charleston will only conduct upper-air soundings at 12z until
further notice due to a shortage of helium.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 7 mi38 min SW 5.1 G 7 81°F 80°F1017.7 hPa
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 45 mi60 min SSW 12 G 16 80°F 80°F3 ft1017.4 hPa (+0.3)76°F
SAXG1 - Sapelo Island Reserve, GA 45 mi50 min S 7 80°F 1017 hPa (+0.0)73°F
ACXS1 - ACE Basin Reserve, SC 47 mi65 min Calm 80°F 1017 hPa75°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 mi54 minS 410.00 miA Few Clouds80°F71°F75%1016.8 hPa
Savannah-Hilton Head International Airport, GA11 mi57 minS 310.00 miFair80°F71°F74%1017.3 hPa
Hilton Head Island, Hilton Head Airport, SC22 mi55 minSSW 810.00 miFair81°F75°F84%1017.3 hPa

Wind History from SVN (wind in knots)
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Last 24hrSW3SW5SW4SW3SW5SW4SW4SW7SW7SW8W5SW6W5W6S8SE11SE8S6S5S3CalmS3CalmS4
1 day agoSW4SW3SW3SW3SW3W3W6W6W5W5W5CalmNW6--SE8SE6SE9S8S7S5S5S4S3SW3
2 days agoCalmCalmCalmCalmCalmCalmW4W4W7W6CalmN5W7NW5S3NE4SE8SE7S4S4S3S3SW4SW3

Tide / Current Tables for Thunderbolt, Wilmington River, Georgia
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Thunderbolt
Click for Map
Mon -- 02:34 AM EDT     Moonrise
Mon -- 03:42 AM EDT     7.17 feet High Tide
Mon -- 06:20 AM EDT     Sunrise
Mon -- 09:43 AM EDT     1.17 feet Low Tide
Mon -- 02:03 PM EDT     Moonset
Mon -- 04:09 PM EDT     7.07 feet High Tide
Mon -- 08:22 PM EDT     Sunset
Mon -- 10:01 PM EDT     1.73 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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45.26.377.16.55.23.72.31.41.21.72.84.25.56.67.16.75.74.43.12.11.72

Tide / Current Tables for Savannah River Entrance, Georgia Current
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Savannah River Entrance
Click for Map
Mon -- 12:43 AM EDT     1.47 knots Max Flood
Mon -- 02:33 AM EDT     Moonrise
Mon -- 04:22 AM EDT     -0.00 knots Slack
Mon -- 06:19 AM EDT     Sunrise
Mon -- 07:40 AM EDT     -1.52 knots Max Ebb
Mon -- 10:35 AM EDT     0.00 knots Slack
Mon -- 01:09 PM EDT     1.76 knots Max Flood
Mon -- 02:02 PM EDT     Moonset
Mon -- 04:43 PM EDT     -0.00 knots Slack
Mon -- 07:21 PM EDT     -1.40 knots Max Ebb
Mon -- 08:21 PM EDT     Sunset
Mon -- 11:02 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.31.51.20.90.3-0.6-1.3-1.5-1.5-1.3-0.60.41.41.71.61.20.6-0.2-1.1-1.4-1.4-1.3-0.9-0

Weather Map and Satellite Images
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wmap_A
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.
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Wind Forecast for Charleston, SC (1,6,7,8)
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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.