Thursday, May23, 2019 L-36.com


Marine Weather and Tides
Green Cove Springs, FL

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 6:27AMSunset 8:19PM Thursday May 23, 2019 7:27 PM EDT (23:27 UTC) Moonrise 11:44PMMoonset 9:33AM Illumination 76% 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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AMZ452 Expires:201905240300;;340663 Fzus52 Kjax 231854 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 254 Pm Edt Thu May 23 2019 Atlantic Coastal Waters From Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm. Seas Are Provided As A Range Of The Average Height Of The Highest 1/3 Of The Waves, Along With The Occasional Height Of The Average Highest 1/10 Of The Waves. Amz450-452-454-240300- Coastal Waters From Altamaha Sound To Fernandina Beach Fl Out 20 Nm- Coastal Waters From Fernandina Beach To St. Augustine Fl Out 20 Nm- Coastal Waters From St. Augustine To Flagler Beach Fl Out 20 Nm- 254 Pm Edt Thu May 23 2019
Tonight..East southeast winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 6 seconds. Inland waters a light chop.
Friday..East southeast winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 7 seconds. Inland waters a light chop.
Friday night..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 7 seconds. Inland waters a light chop.
Saturday..West northwest winds 5 to 10 knots becoming east southeast in the afternoon. Seas 2 to 3 feet. Dominant period 6 seconds. Inland waters a light chop.
Saturday night..South southeast winds 5 to 10 knots. Seas 2 to 3 feet. Inland waters a light chop.
Sunday..South southeast winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a light chop.
Sunday night..South winds 10 to 15 knots. Seas 2 to 4 feet. Inland waters a moderate chop.
Monday..South southwest winds 10 to 15 knots becoming south southeast in the afternoon. Seas 2 to 4 feet. Inland waters a moderate chop.
Monday night..South winds 10 to 15 knots. Seas 2 to 4 feet. Inland waters a moderate chop.
Tuesday..South winds 10 to 15 knots. Seas 2 to 4 feet. Inland waters a moderate chop.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 254 Pm Edt Thu May 23 2019
Synopsis.. Strong high pressure centered off the mid-atlantic coast will sink southward while gradually weakening through Friday. Breezy onshore winds will prevail this afternoon and will weaken overnight as this high pressure center builds directly over our waters. High pressure will then sink southward over the florida peninsula this weekend, with light offshore winds each morning shifting to onshore in the near shore waters with the sea breeze development each afternoon, followed by evening southerly wind surges this weekend through early next week.
Gulf stream.. The approximate location of the west wall of the gulf stream as of may 23, 2019 at 1200 utc... 62 nautical miles east of flagler beach. 75 nautical miles east of saint augustine beach. 78 nautical miles east of jacksonville beach. 90 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Green Cove Springs, FL
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location: 29.99, -81.66     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 232007 cca
afdjax
area forecast discussion
national weather service jacksonville fl
406 pm edt Thu may 23 2019

Record heat this weekend into early next week...

Increasing fire danger through the end of the month...

Near term tonight-Friday
Strong high pressure aloft and at the surface will sink s-sw from
the carolinas into georgia through the near term period. Dry
airmass and subsidence will suppress any shower activity despite
the slightly more humid low level steering flow off atlc ocean.

Mostly clear skies are expected tonight with lows in the 60s
inland and lower 70s along the coast. Some patchy fog will be
possible again late tonight over inland areas and may become
locally dense and mix with smoke near current wildfire locations.

The heat will begin to build as the high pressure settles over the
region on Friday with MAX temps reaching the mid to upper 90s
inland, but likely just below record levels, and lower 90s along
the i-95 corridor and mid upper 80s at the beaches as east coast
sea breeze develops by the early afternoon hours. Subsidence still
too strong and will suppress any afternoon convection with rain
chances remaining less than 10%.

Short term sat-sun
Strong high pressure ridge over ga al will continue to sink
southward and will settle over the fl ga border and i-10 corridor
for the weekend. This will continue to build the heat with daytime
temps reaching record levels (which are listed in the climate
section below) with highs in the upper 90s near 100 degrees over
inland areas with a weaker sea breeze along the coast allowing the
beaches to reach near 90 lower 90s. Subsidence will continue to
suppress any daytime convection with rain chances still less than
10%. With daytime dewpoints mixing down into the 60s over inland
locations, expect heat indices close to actual MAX temps and
generally in the 100-105 range.

Long term mon-thu
Strong high pressure ridge will hold over the entire SE us
including the NE gomex and northern fl and expect MAX temps to
peak during this time frame on Tuesday widespread MAX temps
peaking in the 98-103 range over inland areas which will set daily
record highs and challenge all-time record may MAX temps listed in
the climate section below. Weak sea breeze along the coast will
still allow for the beaches to reach into the lower to middle 90s
before any late day relief. Despite precipitable water amounts
(pwats) getting close to 1.3"-1.5" at times the subsidence and
sinking air from the high pressure ridge will continue to shut
down any daytime convection with rain chances less than 10%.

Aviation
Vfr conditions expected next 24 hours... With a few sites
occasionally having CIGS bkn025-030 through mid afternoon.

Easterly surface winds 10-15 kts expected through the afternoon,
occasionally gusting to 18-20kts, diminishing during the evening.

Marine
High pressure ridge will build down across the waters this weekend
with winds 10-15 knots or less and seas 2-4 ft or less. Early next
week as ridge builds further offshore expect a slight uptick in
southerly flow with some nocturnal winds possibly briefly in the
15-20 knot range during the evening hours and seas 3-5 ft offshore
on Monday Tuesday time frame.

Rip currents: as onshore flow weakens and becomes more southerly
for the holiday weekend expect rip current risk to go down. The
moderate risk of rips with 2-3 ft surf breakers today may linger
into Friday, but will likely expect low risk for the holiday
weekend.

Fire weather
Record heat and dry conditions through the holiday weekend.

Humidities will remain just above critical levels and winds will
remain below 15 mph so not expected to have red flag headlines,
but with hot and dry conditions fire danger will remain high.

Climate
Record highs at climate sites for memorial day weekend:
fri 5 24 Sat 5 25 Sun 5 26 Mon 5 27
---------------------------------------
jacksonville 98(1953) 99(1953) 99(1953) 98(1989)
gainesville 98(1893) 98(2011) 100(1953) 100(1953)
alma, ga 99(1960) 99(1962) 99(1962) 99(1967)
st. Simons island 96(1953) 96(1953) 100(1953) 96(2006)
all-time record MAX temps for the month of may...

jax 100 05-13-1967
gnv 101 05-31-1945
amg 100 05-28-1967
ssi 100 05-26-1953

Preliminary point temps pops
Amg 64 96 69 101 0 0 0 0
ssi 71 86 73 92 0 0 0 0
jax 65 92 68 97 0 0 0 0
sgj 68 85 68 90 0 0 0 0
gnv 63 95 66 98 0 0 0 0
ocf 64 94 65 97 0 0 0 0

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... None.

Hess wolf mcginnis


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RCYF1 14 mi39 min 84°F
SAUF1 - St. Augustine, FL 23 mi27 min E 11 G 12 78°F 82°F1022.3 hPa (-0.9)67°F
DMSF1 28 mi39 min 84°F
BLIF1 29 mi39 min E 8.9 G 13 80°F 1023.4 hPa70°F
LTJF1 29 mi39 min 80°F 68°F
41117 31 mi27 min 79°F4 ft
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 31 mi39 min E 8.9 G 14 79°F 82°F1022.5 hPa
GTXF1 - Guana Tolomato Matanzas Reserve, FL 32 mi102 min E 8 81°F 1023 hPa70°F
FRDF1 - 8720030 - Fernandina Beach, FL 48 mi39 min ESE 8 G 12 84°F 84°F1023 hPa

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Jacksonville Naval Air Station, FL17 mi34 minE 1210.00 miA Few Clouds83°F64°F55%1021.5 hPa
Northeast Florida Regional Airport, FL18 mi31 minE 1110.00 miPartly Cloudy80°F68°F67%1022.2 hPa
Cecil Airport, FL20 mi37 minE 1210.00 miFair84°F64°F51%1021.7 hPa
Keystone Airpark, FL23 mi32 minE 1110.00 miA Few Clouds82°F59°F45%1021.3 hPa

Wind History from NIP (wind in knots)
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Last 24hrE14E9E7E10E8SE9SE8E5SE5SE5S4SE6SE633SE3NE6NE10E13
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1 day agoSE11SE9SE10SE9S8S11S4S14S10SE8SE6SE8S7S6S5CalmE4SE3E11E12E11--E13E14
2 days agoSE10SE9SE9SE10S12S10S8SE7S7S9S7SW6S5S7SW76SE7E6SE6S6NE11E13E12SE12

Tide / Current Tables for Green Cove Springs, St. Johns River, Florida (6)
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Green Cove Springs
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Thu -- 05:32 AM EDT     0.80 feet High Tide
Thu -- 06:29 AM EDT     Sunrise
Thu -- 10:32 AM EDT     Moonset
Thu -- 12:46 PM EDT     0.13 feet Low Tide
Thu -- 05:55 PM EDT     0.67 feet High Tide
Thu -- 08:17 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.10.30.50.70.80.80.70.60.50.30.20.10.10.20.40.50.60.70.60.60.50.40.3

Tide / Current Tables for Black Creek, S.C.L. RR. bridge, Florida
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Black Creek
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Thu -- 04:57 AM EDT     5.70 feet High Tide
Thu -- 06:29 AM EDT     Sunrise
Thu -- 10:33 AM EDT     Moonset
Thu -- 12:10 PM EDT     4.84 feet Low Tide
Thu -- 05:12 PM EDT     5.49 feet High Tide
Thu -- 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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4.855.45.65.75.75.65.55.35.154.94.84.95.15.45.55.55.55.35.154.94.9

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 Jacksonville, FL (19,4,5,8)
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Ground Weather Radar Station Jacksonville, FL
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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.