Tuesday, November21, 2017 L-36.com


Marine Weather and Tides
Jacksonville Beach, FL

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:55AMSunset 5:27PM Tuesday November 21, 2017 7:09 AM EST (12:09 UTC) Moonrise 9:27AMMoonset 8:08PM Illumination 8% Phase: Waxing Crescent; Moon at 3 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
    EDIT      (on/off)   Help
AMZ452 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- 312 Am Est Tue Nov 21 2017
Today..East southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 6 seconds. Inland waters a light chop. Rain likely. A slight chance of Thunderstorms in the afternoon.
Tonight..North northeast winds 5 to 10 knots. Seas 2 to 4 feet. Dominant period 7 seconds. Inland waters smooth. A chance of rain in the evening, then a slight chance of rain after midnight.
Wednesday..North northeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Inland waters a light chop. A slight chance of showers in the morning, then a chance of showers and a slight chance of Thunderstorms in the afternoon.
Wednesday night..East northeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Inland waters a moderate chop. A chance of showers in the evening. A slight chance of Thunderstorms through the night. Showers likely after midnight.
Thursday and Thursday night..North northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Inland waters choppy. Showers likely and a slight chance of Thunderstorms.
Friday..North northeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Inland waters a moderate chop. A chance of showers.
Friday night..North winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters a light chop. A slight chance of showers.
Saturday..West northwest winds around 10 knots. Seas 2 to 4 feet. Inland waters a light chop.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 312 Am Est Tue Nov 21 2017
Synopsis.. High pressure will move east of the carolinas late tonight. Low pressure is forecast to develop over the eastern gulf of mexico tomorrow then move over the florida peninsula tomorrow night and Thursday, resulting in increased rain chances with a few Thunderstorms possible. The low will shift east and north of the waters through the weekend...shifting winds from a northeast direction to a northwest direction. Depending on the intensity of the low...winds and seas could approach advisory criteria at times.

7 Day Forecast for Marine Location Near Jacksonville Beach, FL
   Hourly   EDIT   Help
location: 30.29, -81.36     debug


Area Discussion for - Jacksonville, FL
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus62 kjax 210810
afdjax
area forecast discussion
national weather service jacksonville fl
310 am est Tue nov 21 2017

Near term (through tonight)
A short wave and associated surface low across the SE gulf will move
into cntl fl tonight and lift NE offshore by late tonight. Rain will
overspread the area from south to north today with bulk of activity
this afternoon into the evening. Rain will taper off late tonight as
the short wave lifts out of the area. With low passing to the south
of the area... Models continue to indicate a sharp NW to SE pop and
pcp gradient with highest rainfall amounts (locally up to an inch
possible) mainly south of the i-10 corridor. Model soundings also
continue to indicate enough weak instability for a few elevated
storms across the same area. As winds veer to the east and southeast
today temps will warm into the mid 70s most areas despite cloud
cover. A cold front will drop southeast towards the area by late
tonight behind the departing low and moisture pooling ahead of the
front may lead to areas of late night fog which is strongly
suggested by MOS and SREF guidance.

Short term through Wednesday night
As weak shortwave ridge shifts east of the area Wednesday morning...

increasing lift ahead of gulf of mexico shortwave trough will cause
increasing cloudiness over early morning fog... Weak weak isentropic
lift resulting in a mostly cloudy day with scattered light showers
breaking out. Will maintain isolated t-storms during afternoon given
model suggestion of 500-1000 j kg cape... But uncertainty as to how
much destabilization is realized north of warm front in cloudy
conditions. Cloudiness and scattered showers will likely keep high
temps down north of warm front ... Following cooler met ecs mos
guidance rather than warmer mav guidance for high temps... Wouldn't
surprise me if temps end up a little lower than forecast... Though
any breaks in cloudiness especially southern areas... Will push temps
up to forecast values.

Wednesday night... Low pressure develops over eastern gulf of mexico
with warm front extending eastward over ctrl fl... Close to ecmwf
solution... Which is N of NAM and S of gfs. Isentropic lift north of
warm front... In right-rear quad of upper jet streak... Should
generate numerous showers... Possibly a few t-storms. Most widespread
and heaviest rainfall likely to be in a band north over north-
central and northeast fl into extreme southeast ga.

Long term Thursday through Monday
Following solutions with surface low moving south of forecast
area... With isentropic lift gradually shifting east of forecast area
Thursday night and Friday. Went with consensus guidance for high
temps Thursday with low-mid 60s SE ga... Mid-upr 60s i-10
corridor... Upr 60s-lwr 70s further south.

Low pressure moves offshore of e-ctrl fl and lifts NE offshore of ga
and carolinas thru sat... While weak high pressure builds over our
area from the west. A stronger cold front moves through over the
weekend. The result will be below normal temperatures during the
Friday-Monday period with dry conditions.

Aviation PrevailingVFR conditions through the morning but
expecting MVFR by this afternoon into the evening as rain
overspreads the area from south to north. A few elevated storms
possible but confidence not high enough for mention in current taf
package.

Marine Low pressure will track from the eastern gulf of mexico
across central fl... Then northeast over the offshore waters of ga
and the carolinas thru Saturday. Winds will be easterly to
southeasterly today... Become more northeast to north northeast wed-
fri as the low passes to the south of the area... Then shifts to
northwesterly as the low lifts northeast of the area. Depending on
how strong the low is as it passes... And the high that builds in
during the weekend... Winds and seas could approach small craft
advisory criteria at times.

Rip currents: moderate risk into Wednesday due to a persistent
long period easterly swell.

Preliminary point temps pops
Amg 73 54 69 51 30 30 20 60
ssi 72 59 68 58 50 40 20 60
jax 74 57 71 57 50 40 30 70
sgj 74 61 72 60 60 50 40 60
gnv 74 57 72 57 60 40 50 70
ocf 74 58 75 59 60 40 40 50

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... None.

Pp pw


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LTJF1 8 mi52 min 68°F 61°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 8 mi52 min ESE 1.9 G 4.1 69°F 66°F1018.7 hPa
BLIF1 11 mi52 min ENE 1.9 G 4.1 65°F 1019.5 hPa65°F
DMSF1 12 mi52 min 66°F
JXUF1 14 mi52 min 65°F
41117 25 mi48 min 70°F6 ft
FRDF1 - 8720030 - Fernandina Beach, FL 27 mi52 min ESE 1 G 5.1 69°F 64°F1019.4 hPa
41112 - Offshore Fernandina Beach, FL (132) 29 mi70 min 67°F4 ft
SAUF1 - St. Augustine, FL 30 mi70 min ESE 11 G 12 71°F 67°F1018.1 hPa (-0.9)
RCYF1 35 mi52 min 65°F
GTXF1 - Guana Tolomato Matanzas Reserve, FL 44 mi85 min SE 2.9 71°F 1019 hPa62°F

Wind History for I-295 Bridge, St Johns River, FL
(wind in knots)    EDIT      (on/off)   Help
Last
24hr
1 day
ago
2 days
ago

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mayport Naval Station - Adm David L. McDonald Field, FL8 mi78 minESE 510.00 miOvercast69°F60°F73%1018.1 hPa
Jacksonville Craig Municipal Airport, FL9 mi77 minN 010.00 miA Few Clouds61°F57°F90%1018.2 hPa
Jacksonville Naval Air Station, FL17 mi77 minN 410.00 miMostly Cloudy65°F60°F84%1017.9 hPa
Northeast Florida Regional Airport, FL22 mi74 minN 010.00 miMostly Cloudy66°F61°F84%1018.3 hPa
Jacksonville International Airport, FL22 mi74 minN 010.00 miMostly Cloudy58°F57°F97%1018.2 hPa

Wind History from NRB (wind in knots)
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
Last 24hrNW6NW6NE14NE15NE13NE14NE16NE10NE10E9E7E5E7E8E9SE10SE11SE7E9E8E7E6E5E5
1 day agoW9SW7NW8W9W6W10W8
G15
NW8W9NW84443NW4NW4N5N9N6N56NW5NW4NW7
2 days agoCalmCalmCalmW5SW8SE7SE8SE10S7SE8S3S4SW5SW5SW7SW6SW6SW7S7S7SW8SW10
G18
SW11SW12

Tide / Current Tables for Jacksonville Beach, Florida
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Jacksonville Beach
Click for Map
Tue -- 03:15 AM EST     0.14 feet Low Tide
Tue -- 06:56 AM EST     Sunrise
Tue -- 09:26 AM EST     Moonrise
Tue -- 09:36 AM EST     5.36 feet High Tide
Tue -- 03:59 PM EST     0.34 feet Low Tide
Tue -- 05:26 PM EST     Sunset
Tue -- 08:08 PM EST     Moonset
Tue -- 09:46 PM EST     4.66 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.71.50.60.20.41.32.53.74.75.35.34.83.92.71.50.70.30.81.72.83.84.54.64.3

Tide / Current Tables for St. Johns River Entrance, Florida Current
   EDIT      (on/off)   Help   One Week of Data
St. Johns River Entrance
Click for Map
Tue -- 02:08 AM EST     -1.94 knots Max Ebb
Tue -- 05:56 AM EST     0.00 knots Slack
Tue -- 06:56 AM EST     Sunrise
Tue -- 08:43 AM EST     2.25 knots Max Flood
Tue -- 09:26 AM EST     Moonrise
Tue -- 12:06 PM EST     -0.00 knots Slack
Tue -- 02:42 PM EST     -2.05 knots Max Ebb
Tue -- 05:26 PM EST     Sunset
Tue -- 06:56 PM EST     0.00 knots Slack
Tue -- 08:08 PM EST     Moonset
Tue -- 09:14 PM EST     1.57 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.4-1.5-1.9-1.8-1.5-0.90.11.222.21.81.10.1-1.1-1.9-2-1.9-1.5-0.90.111.61.41

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Jacksonville, FL (7,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Jacksonville, FL
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.