Tuesday, April23, 2019 L-36.com


Marine Weather and Tides
Welaka, 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 6:48AMSunset 7:57PM Tuesday April 23, 2019 6:23 AM EDT (10:23 UTC) Moonrise 11:25PMMoonset 9:10AM Illumination 84% Phase: Waning Gibbous; Moon at 19 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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AMZ454 Expires:201904231700;;351061 Fzus52 Kjax 230706 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 306 Am Edt Tue Apr 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. Amz450-452-454-231700- 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- 306 Am Edt Tue Apr 23 2019
Today..South southwest winds around 5 knots becoming southeast 5 to 10 knots in the afternoon. Seas 2 to 3 feet. Dominant period 8 seconds. Inland waters smooth.
Tonight..South southwest winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 8 seconds. Inland waters a light chop.
Wednesday..Southwest winds 5 to 10 knots becoming south southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Dominant period 8 seconds. Inland waters a light chop.
Wednesday night..South southwest winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 8 seconds. Inland waters a light chop.
Thursday..South southwest winds 5 to 10 knots becoming south southeast 10 to 15 knots in the afternoon. Seas 2 to 4 feet. Inland waters a light chop.
Thursday night..South winds 10 to 15 knots. Seas 2 to 4 feet. Inland waters a moderate chop.
Friday..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a moderate chop. Showers likely and a slight chance of Thunderstorms.
Friday night..West northwest winds 5 to 10 knots becoming north 10 to 15 knots after midnight. Seas 2 to 3 feet. Inland waters a light chop. Showers likely and a slight chance of Thunderstorms.
Saturday..East northeast winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a moderate chop. Showers likely.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 306 Am Edt Tue Apr 23 2019
Synopsis.. Surface high pressure over the local waters will build offshore of the south florida atlantic coast through Thursday. Winds will become onshore near the coast each afternoon with the sea breeze. Southerly winds will increase late Thursday into Friday as a cold front approaches. The front will move across the local waters late Friday. Onshore flow develops this weekend as high pressure builds north of the region.
Gulf stream.. The approximate location of the west wall of the gulf stream as of apr 23, 2019 at 1200 utc... 69 nautical miles east of flagler beach. 80 nautical miles east of saint augustine beach. 90 nautical miles east of jacksonville beach. 101 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Welaka, FL
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location: 29.39, -81.64     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 230733
afdjax
area forecast discussion
national weather service jacksonville fl
333 am edt Tue apr 23 2019

Warmer and continued dry...

Near term Today & tonight...

synopsis... Continued dry and warmer.

Surface high pressure centered over the local area will gradually
settle farther south across central florida through tonight.

Aloft, an upper level ridge axis extending across the eastern
gomex will gradually de-amplify. A dry and stable airmass will
continue across the local area through tonight, with increasing
high cirrus from the west. Could see a few daytime cumulus pop
inland of the sea breezes, sub strong low level subsidence
inversion will suppress convective growth and mix down dry air
thus still expected mostly clear skies less the high clouds. Sea
breezes will merge late afternoon to early evening between i-75
corridor and highway 301. As ridge axis settles south across
central fl tonight, light low level flow will transition to wsw.

Temperatures warm above normal today inland into the mid upper
80s, with cooler highs in the mid upper 70s along the coast.

Tonight, dry air will remain in place, and thus trended a bit
lower than MOS guidance with lows inland falling into the low mid
50s, to low mid 60s along the atlantic coast and st. Johns river
basin.

Short term Wednesday and Thursday...

dry weather is expected for Wednesday and Thursday, with Thursday
seeing an increase in cloud cover as the flow shifts about to out
of the southwest. This shift will occur in response to the
ridging aloft building further out to the east, with the newly
introduced southwesterly flow increasing the amount of moisture
over the area. Diurnal high temperatures during this span will
reach into the upper 80s and potentially even as high as 90
degrees. Overnight low temperatures will rise from the upper 50s
on Wednesday night to the mid 60s on Thursday night.

Long term Friday through Monday...

forecast models anticipate the cold front approaching from the
west will move across florida and southeast georgia on Friday,
bringing with it widespread showers and embedded thunderstorms
with the potential for severe storms. Models are still not quite
in agreement as to which areas will receive the strongest storms,
but do agree that they will take place during the day on Friday.

The front will have completed its passage by the weekend which
will shift the flow about to out of the north northwest, with a
potential for diurnal developments occuring through to Monday. Max
temps for the weekend will be in the 80s, with the overnight low
temperatures dropping down into the upper 50s and low 60s.

Aviation
Vfr conditions. High cirrus clouds will increase through tonight.

Airmass still too dry for significant fog or stratus
restrictions. Light land breeze winds < 5 kts will impact coastal
terminals early this morning, then winds will back sse into the
afternoon as east coast sea breeze develops and drifts inland with
speeds near 9-11 kts along the coast this afternoon, less than 10
kts inland.

Marine
Extended period of no headlines expected S high pressure over the
local waters today settles southward, then shifts ese of the
region through thu. Winds will become onshore near the coast each
afternoon with the east coast sea breeze. Late Thu into fri, ssw
flow increases ahead of approaching cold front. The front will
press across the local waters late Friday into early Saturday
preceded by showers and thunderstorms. Winds become onshore this
weekend as high pressure builds north of the waters.

Rip currents: persistent long period ese swells will continue a
low-end moderate risk today and wed.

Fire weather
Low dispersion values along the coast today, with values inland
ranging between fair and generally good. Minimum rhs inland in the
20-25% range for SE ga to 25-30% for NE fl. East coast sea breeze
will keep rhs along the coast elevated. Despite low rhs and
elevated erc, winds will be light and not near red flag criteria.

Preliminary point temps pops
Amg 87 58 87 61 0 0 0 0
ssi 76 62 83 64 0 0 0 0
jax 84 58 88 62 0 0 0 0
sgj 78 58 84 64 0 0 0 0
gnv 86 55 87 60 0 0 0 0
ocf 86 55 87 60 0 0 0 0

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... None.

Enyedi corless


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
GTXF1 - Guana Tolomato Matanzas Reserve, FL 28 mi98 min WSW 1 56°F 1021 hPa56°F
RCYF1 29 mi35 min 72°F
SAUF1 - St. Augustine, FL 38 mi23 min W 6 G 7 61°F 73°F1020.2 hPa (-0.4)56°F

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from XFL (wind in knots)
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Last 24hrCalmCalm--------------------CalmCalmCalmW4NW5NW5W4NW5CalmCalm43
1 day agoCalmCalm--------------------CalmCalmNW6NW6NW6NW6N5W5N5N7W5Calm
2 days agoW5----------------------CalmCalmW5W10W10W10NW10
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Tide / Current Tables for Georgetown, St. Johns River, Florida (2)
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Georgetown
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Tue -- 05:33 AM EDT     2.39 feet Low Tide
Tue -- 06:52 AM EDT     Sunrise
Tue -- 08:03 AM EDT     2.45 feet High Tide
Tue -- 08:32 AM EDT     2.45 feet Low Tide
Tue -- 10:10 AM EDT     Moonset
Tue -- 11:17 AM EDT     2.52 feet High Tide
Tue -- 02:29 PM EDT     2.47 feet Low Tide
Tue -- 03:11 PM EDT     2.47 feet High Tide
Tue -- 05:55 PM EDT     2.41 feet Low Tide
Tue -- 07:57 PM EDT     Sunset
Tue -- 08:18 PM EDT     2.48 feet High Tide
Tue -- 09:11 PM EDT     2.47 feet Low Tide
Tue -- 11:33 PM EDT     2.53 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.52.52.52.52.42.42.42.42.52.52.52.52.52.52.52.52.52.42.42.42.52.52.52.5

Tide / Current Tables for Welaka, St. Johns River, Florida (2)
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Welaka
Click for Map
Tue -- 01:47 AM EDT     3.21 feet High Tide
Tue -- 03:22 AM EDT     3.19 feet Low Tide
Tue -- 06:52 AM EDT     Sunrise
Tue -- 06:58 AM EDT     3.58 feet High Tide
Tue -- 10:10 AM EDT     Moonset
Tue -- 12:06 PM EDT     3.24 feet Low Tide
Tue -- 01:45 PM EDT     3.27 feet High Tide
Tue -- 04:01 PM EDT     3.22 feet Low Tide
Tue -- 07:18 PM EDT     3.53 feet High Tide
Tue -- 07:58 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.23.23.23.23.23.33.53.63.53.53.43.33.23.33.33.23.23.33.43.53.53.43.43.3

Weather Map and Satellite Images
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wmap_A
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 (6,6,7,8)
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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.