Saturday, January19, 2019 L-36.com


Marine Weather and Tides
Callahan, 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 7:22AMSunset 5:51PM Saturday January 19, 2019 9:23 PM EST (02:23 UTC) Moonrise 4:24PMMoonset 5:44AM Illumination 99% Phase: Waxing Gibbous; Moon at 14 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:201901200930;;623199 Fzus52 Kjax 200125 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 825 Pm Est Sat Jan 19 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. Amz450-452-454-200930- 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- 825 Pm Est Sat Jan 19 2019
.small craft advisory in effect through Sunday evening...
Rest of tonight..South southwest winds increasing to 20 to 25 knots. Seas building to 4 to 6 feet with occasional seas up to 8 feet. Dominant period 5 seconds. Inland waters becoming rough. Showers likely and a slight chance of Thunderstorms.
Sunday..West northwest winds 25 knots with occasional gusts to gale force possible. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 6 seconds. Inland waters very rough.
Sunday night..North northwest winds 20 to 25 knots with occasional gusts to gale force possible, becoming north 15 to 20 knots after midnight. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 5 seconds. Inland waters rough.
Monday..North northeast winds 15 knots. Seas 2 to 4 feet. Dominant period 5 seconds. Inland waters a moderate chop.
Monday night..East northeast winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a light chop.
Tuesday and Tuesday night..East southeast winds 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters a moderate chop.
Wednesday..South southeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters choppy. A chance of showers.
Wednesday night..South winds 20 to 25 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Inland waters rough. Showers and a slight chance of Thunderstorms.
Thursday..Southwest winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Inland waters choppy. Showers likely.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 825 Pm Est Sat Jan 19 2019
Synopsis.. Strong low pressure over the tennessee valley this evening will accelerate northeastward across the appalachians and into the mid-atlantic states by Sunday morning. A strong cold front associated with this storm system currently over the florida panhandle will race eastward across our waters during the predawn and early morning hours on Sunday, with increasing coverage of showers and Thunderstorms expected overnight. Frequent gale force wind gusts are expected offshore beginning during the predawn hours on Sunday, with occasional gusts to gale force possible near shore through Sunday afternoon. Meanwhile, strong high pressure will build southeastward from the western great lakes region on Sunday into the ohio valley by Monday evening and then will shift off the carolina coast by Tuesday evening. Onshore winds will strengthen by Tuesday night and Wednesday ahead of the next cold front that will be entering the southeastern states.


7 Day Forecast for Marine Location Near Callahan, FL
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location: 30.56, -81.74     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 191912
afdjax
area forecast discussion
national weather service jacksonville fl
212 pm est Sat jan 19 2019

Near term through Sunday ...

strong cold front to reach western portion of forecast area around
midnight, then sweep east across region. Prefrontal showers should
reach western counties shortly after sunset, then work across area.

With a nocturnal passage, instability limited. However, significant
lift will be provided along the boundary as the cold air collides
with the warm airmass which is currently in place. Anticipating a
narrow band of more intense showers, with embedded thunderstorms
along the front, with a wider band of showers ahead of, and behind
front. A few strong to severe storms will be possible. This main
front should be to the east by dawn. A secondary trough is forecast
on the back side of the main front which could cause showers to
linger a bit into Sunday morning, and help to enhance the pressure
gradient, resulting in elevated wind speeds.

As high pressure builds from the west, gusty winds on significant
cold advection is expected for Sunday afternoon. Will likely need a
wind advisory for Sunday, mainly for the afternoon. Temperatures
will struggle Sunday, with readings near steady through the day.

Short term Sunday night through Wednesday ...

high pressure will build from the northwest Sunday night, as cold
advection continues. Lows around freezing inland will be expected
Sunday night, but with winds staying up somewhat through the night,
only patchy frost development anticipated.

The high will build to the north on Monday, and to the northeast
Monday night into Tuesday. Another cooler than normal day expected
Monday, with prevailing northerly flow. The position of the high
will result in an increasingly onshore flow for Monday night into
Tuesday. A coastal trough may develop in this onshore flow pattern,
resulting in increased coastal clouds, and perhaps a few showers
near the beaches. With the onshore flow Monday night, temperatures
should be a bit milder, but still near freezing well inland. With
winds lighter inland Monday night, frost will be a possibility.

Temperatures will moderate back to around normal levels for Tuesday.

The high will build to the east into Wednesday, as another frontal
system approaches from the west. At this point, an increasing chance
for showers Wednesday, but the core of the frontal precipitation
should be west of the forecast area this period. With region in warm
sector Wednesday, well above normal temperatures will be expected,
with highs in the middle 70s.

Long term Wednesday night through Saturday ...

cold front to sweep east across forecast area Wednesday night into
Thursday morning. Once again, expecting mainly showers with a few
embedded thunderstorms with the passage. High pressure will build
from the west Thursday night into Friday, with cold advection
leading to below normal temperatures. The high will build overhead
Friday night into Saturday with temperatures remaining a bit below
normal despite mainly clear skies.

Aviation 18z TAF period ...

vfr level clouds will be on the increase this afternoon with gusty
winds. A strong cold front will cross the region tonight from the
west, with a period of heavy rain possible, along with potential for
a few strong storms. CIGS and vis will improve Sunday morning, but
winds will increase.

Marine
Winds will increase this evening ahead of an approaching cold front.

This front will move east across region tonight, and quickly move to
the east Sunday morning. A period of heavy rain showers, and
possibly a few strong storms will accompany this front. Winds
will increase further overnight into Sunday. High pressure will
build from the northwest Sunday night through Monday, with winds
subsiding. The high will build to the north northeast Tuesday, and
toward the east Wednesday. A cold front will move east across
region Wednesday night into Thursday.

Rip currents: moderate risk through Sunday.

Preliminary point temps pops
Amg 52 53 31 50 80 10 0 0
ssi 53 56 34 49 80 20 0 0
jax 55 58 34 52 80 20 0 0
sgj 54 60 36 54 90 30 0 0
gnv 53 57 32 55 90 20 0 0
ocf 53 59 33 57 90 20 0 0

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... Small craft advisory until 3 am est Sunday for waters from
altamaha sound ga to fernandina beach fl from 20 to 60 nm-
waters from fernandina beach to st. Augustine fl from 20 to
60 nm-waters from st. Augustine to flagler beach fl from 20
to 60 nm.

Gale warning from 3 am Sunday to midnight est Sunday night for
waters from altamaha sound ga to fernandina beach fl from
20 to 60 nm-waters from fernandina beach to st. Augustine
fl from 20 to 60 nm-waters from st. Augustine to flagler
beach fl from 20 to 60 nm.

Small craft advisory from 9 pm this evening to midnight est
Sunday night for 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.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DMSF1 15 mi35 min 60°F
BLIF1 16 mi35 min S 7 G 11 69°F 1009.7 hPa56°F
FRDF1 - 8720030 - Fernandina Beach, FL 17 mi35 min 66°F 58°F1008.8 hPa
LTJF1 20 mi35 min 66°F 57°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 20 mi35 min S 6 G 9.9 67°F 60°F1008.9 hPa
41112 - Offshore Fernandina Beach, FL (132) 26 mi53 min 58°F3 ft
SAUF1 - St. Augustine, FL 55 mi83 min S 16 G 16 63°F 61°F1009.9 hPa (-2.2)
SAXG1 - Sapelo Island Reserve, GA 64 mi83 min S 16 61°F 1007 hPa (-3.0)57°F

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Jacksonville International Airport, FL5 mi27 minS 910.00 miOvercast69°F53°F57%1007.9 hPa
Fernandina Beach Municipal Airport, FL15 mi48 minS 1010.00 miFair66°F56°F71%1008.5 hPa
Jacksonville Craig Municipal Airport, FL20 mi30 minS 710.00 miA Few Clouds68°F55°F63%1008.4 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL20 mi31 minS 910.00 miA Few Clouds68°F55°F65%1008.5 hPa
Jacksonville Naval Air Station, FL23 mi30 minS 1110.00 miOvercast68°F57°F68%1008.1 hPa

Wind History from JAX (wind in knots)
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Last 24hrSE4CalmCalmSE3CalmCalmSE3S3S3S4CalmCalmS8S11S9S8S10SW9S14
G20
S11S7S8S8S9
1 day agoCalmCalmCalmCalmCalmW5W6CalmCalmS3CalmW3CalmCalmCalm3SW4SW3E11E7SE6SE5SE4E3
2 days agoCalmCalmCalmCalmCalmCalmCalmN3CalmCalmCalmCalm3E5CalmS44SW5S6SW3CalmCalmCalmCalm

Tide / Current Tables for Boggy Creek, 2 mi. above entrance, Florida
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Boggy Creek
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Sat -- 04:10 AM EST     -0.34 feet Low Tide
Sat -- 05:43 AM EST     Moonset
Sat -- 07:23 AM EST     Sunrise
Sat -- 10:30 AM EST     3.71 feet High Tide
Sat -- 04:24 PM EST     Moonrise
Sat -- 04:59 PM EST     -0.05 feet Low Tide
Sat -- 05:51 PM EST     Sunset
Sat -- 10:52 PM EST     3.16 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.31.50.6-0-0.3-0.10.61.52.53.23.73.73.32.61.70.80.2-0.10.20.91.72.533.2

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
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Sat -- 02:13 AM EST     0.00 knots Slack
Sat -- 05:12 AM EST     2.72 knots Max Flood
Sat -- 05:41 AM EST     Moonset
Sat -- 07:22 AM EST     Sunrise
Sat -- 08:31 AM EST     -0.00 knots Slack
Sat -- 11:02 AM EST     -2.29 knots Max Ebb
Sat -- 03:16 PM EST     0.00 knots Slack
Sat -- 04:23 PM EST     Moonrise
Sat -- 05:40 PM EST     1.77 knots Max Flood
Sat -- 05:50 PM EST     Sunset
Sat -- 08:34 PM EST     -0.00 knots Slack
Sat -- 11:17 PM EST     -2.35 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.7-1.1-0.20.92.12.72.51.70.7-0.7-1.9-2.3-2.1-1.7-1.2-0.30.81.61.71.30.6-0.5-1.7-2.3

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 Jacksonville, FL (21,6,7,8)
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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.