Monday, August21, 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 8:01PM Monday August 21, 2017 12:47 AM EDT (04:47 UTC) Moonrise 5:41AMMoonset 7:08PM Illumination 1% Phase: Waning Crescent; Moon at 29 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 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- 946 Pm Edt Sun Aug 20 2017
Rest of tonight..Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 8 seconds. Inland waters mostly smooth. A chance of showers and a slight chance of Thunderstorms after midnight.
Monday..East southeast winds 10 knots. Seas 2 to 3 feet. Dominant period 8 seconds. Inland waters a light chop. A chance of showers in the morning. A slight chance of showers and Thunderstorms in the afternoon.
Monday night and Tuesday..Southeast winds 10 knots. Seas 2 to 4 feet. Dominant period 9 seconds. Inland waters a light chop.
Tuesday night..Southeast winds 5 to 10 knots, becoming south after midnight. Seas 2 to 4 feet. Inland waters mostly smooth.
Wednesday..South southeast winds 5 to 10 knots. Seas 2 to 4 feet. Inland waters mostly smooth. A slight chance of showers and Thunderstorms.
Wednesday night..South southwest winds 15 knots. Seas 2 to 3 feet. Inland waters a moderate chop. A chance of showers and Thunderstorms.
Thursday..South winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a light chop. Showers and Thunderstorms likely.
Thursday night..South winds 10 to 15 knots, becoming west southwest 5 to 10 knots after midnight. Seas 2 to 4 feet. Inland waters a light chop. Showers likely and a chance of Thunderstorms.
Friday..North northeast winds 10 knots, becoming east northeast in the afternoon. Seas 2 to 3 feet. Inland waters a light chop. Showers and Thunderstorms likely.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 946 Pm Edt Sun Aug 20 2017
Synopsis.. A weak low pressure trough will move northwestward and approach the northeast florida coastal waters later tonight, progressing into the georgia coastal waters by Monday afternoon. A tropical wave currently located over the southeastern bahamas will approach the southeast or central florida coastal waters on Wednesday. Meanwhile, a cold front will push southward into the georgia coastal waters by early Thursday, and is expected to move into the northeast florida coastal waters on Friday.

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


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 210323
afdjax
area forecast discussion
national weather service jacksonville fl
1123 pm edt Sun aug 20 2017

Mostly cloudy skies will likely obscure the partial eclipse for
most locations on Monday afternoon...

Update
Late evening surface analysis depicts high pressure (1021
millibars) centered along the mid-atlantic and north carolina
coasts. Surface troughs were positioned over south central georgia
and along the southeast florida coast. Aloft... A tropical upper
tropospheric trough (tutt) is spinning slowly westward and is
centered over the south central gulf of mexico. Deep-layered
atlantic ridging extends from bermuda westward to the lower
mississippi valley. The deep layered ridge and prevailing easterly
flow has pushed earlier convection west of the suwannee river.

However, plenty of mid and high altitude cloudiness is located on
the east side of the tutt axis. Short-term, high resolution
guidance continues to indicate that a weak surface trough
currently along the southeast florida coast will pivot northward
overnight, resulting in shower development over the northeast
florida coastal waters during the predawn hours. This activity
will likely push into portions of the northeast florida coastal
counties towards sunrise. Light onshore flow and plenty of cloud
cover will keep lows in the mid to upper 70s for most locations.

The cloud cover forecast for Monday afternoon's partial solar
eclipse over our region is not optimistic. Troughing aloft
extending northwestward from the tutt cell over the gulf of mexico
will move northwestward across our region, with much drier air
pushing into south and central florida in the wake of this feature
ahead of the next tropical wave. Scattered to numerous showers
developing along the northeast florida coast early in the day will
spread northward into southeast georgia by early afternoon, with
at least scattered convection developing along the st. Johns river
basin and points westward during the afternoon hours as the
atlantic sea breeze boundary progresses inland. Model soundings
depict plenty of mid and high altitude cloud cover over most of
our region throughout the afternoon hours. It appears as if
locations east and southeast of a line from st. Augustine to
palatka to ocala will have the best opportunity for some breaks in
this cloud cover as the afternoon progresses, but even this is
uncertain as convection developing along the st. Johns river basin
potentially produces more anvils that would block the eclipse
viewing. Activity should gradually increase in coverage by the
mid to late afternoon to the west of u.S. Highway 301. Relatively
mild mid- level temperatures should preclude severe weather, but
heavy downpours and frequent lightning strikes will be possible at
inland locations tomorrow afternoon. Onshore winds and rainfall
will keep coastal highs in the mid to upper 80s, with inland highs
around 90 in northeast and north central florida and the lower
90s for inland southeast georgia.

Aviation
Vfr conditions will prevail through at least 10z Monday. A weak
low pressure trough will approach the northeast florida counties
towards 10z, with periods of MVFR ceilings of 1500-2500 feet and
scattered to numerous showers possible towards 10z at sgj and then
spreading northward to crg and jax by 11z 12z. This activity is
expected to impact ssi after 14z.VFR conditions should prevail
otherwise through around 16z. Scattered showers and thunderstorms
will then develop inland, with sub-vfr impacts possible at gnv and
vqq.

Marine
High pressure centered near the outer banks will move slowly
eastward through midweek. A weak low pressure trough will approach
the northeast florida waters during the predawn and early morning
hours on Monday. This feature will progress into the southeast
georgia waters during the early afternoon hours. A tropical wave
located near the southeastern bahamas will move slowly
northwestward and will approach the southeast or central florida
coastal waters on Tuesday night or Wednesday. Meanwhile, a cold
front will move southward and will approach the southeast georgia
waters by late Wednesday night and early Thursday. This front will
continue moving southward and is expected to cross the northeast
florida waters on Friday. Light onshore winds will prevail through
Tuesday night, with winds becoming southerly on Wednesday and then
southwesterly ahead of the approaching front by Wednesday night.

An easterly ocean swell may cause combined seas to increase up to
5 feet in the offshore waters from Monday night through Wednesday.

Rip currents: onshore winds and an easterly ocean swell will
likely result in a moderate risk of rip currents at area beaches
on Monday.

Preliminary point temps pops
Amg 74 91 74 92 10 40 10 30
ssi 80 86 79 89 50 60 10 20
jax 76 88 76 91 40 40 10 10
sgj 78 87 79 89 40 40 0 10
gnv 75 90 74 93 40 40 10 20
ocf 75 91 74 93 10 30 10 20

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... None.

Nelson enyedi corless


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 8 mi47 min S 2.9 G 5.1 82°F 84°F1020.4 hPa (+1.6)
LTJF1 8 mi47 min 82°F 77°F
BLIF1 11 mi47 min SSW 5.1 G 6 82°F 1021 hPa (+1.7)81°F
DMSF1 12 mi47 min 86°F
JXUF1 14 mi47 min 87°F
NFDF1 16 mi47 min S 2.9 G 4.1 82°F 1021 hPa (+1.6)78°F
BKBF1 19 mi47 min S 1.9 G 4.1 82°F 89°F
41117 25 mi25 min 84°F2 ft
FRDF1 - 8720030 - Fernandina Beach, FL 27 mi47 min SSE 5.1 G 8 84°F 85°F1020.6 hPa (+1.3)
41112 - Offshore Fernandina Beach, FL (132) 29 mi77 min 84°F2 ft
SAUF1 - St. Augustine, FL 30 mi47 min SSW 5.1 G 5.1 81°F 83°F1020.2 hPa (+1.5)77°F
RCYF1 35 mi47 min 87°F
GTXF1 - Guana Tolomato Matanzas Reserve, FL 44 mi62 min W 1 80°F 1021 hPa77°F

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mayport Naval Station - Adm David L. McDonald Field, FL8 mi55 minS 510.00 miFair81°F77°F88%1019.7 hPa
Jacksonville Craig Municipal Airport, FL9 mi54 minN 010.00 miFair80°F75°F87%1020 hPa
Jacksonville Naval Air Station, FL17 mi1.9 hrsSE 810.00 miMostly Cloudy83°F78°F85%1019.4 hPa
Northeast Florida Regional Airport, FL22 mi51 minN 010.00 miFair80°F75°F87%1020.3 hPa
Jacksonville International Airport, FL22 mi51 minSSE 410.00 miMostly Cloudy80°F79°F97%1019.8 hPa
Fernandina Beach Municipal Airport, FL23 mi72 minSSE 510.00 miPartly Cloudy82°F77°F84%1019.6 hPa

Wind History from NRB (wind in knots)
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Last 24hrSW3SW4S6S4SW3CalmCalmCalmS3CalmCalmE5E7E10SE11SE12SE13SE11SE7SE10SE8S5S10S5
1 day agoSW8W4W3W5S3S4SW4SW5SW7W5W5NW3E7SE9SE12SE15SE8S7S4S4SE5S3SW3SE3
2 days agoS5SW6SW8SW5SW5SW4SW4SW5SW4W3CalmNE9NE8E7SE7SE6SW5W7W6CalmS5SW5SW5SW3

Tide / Current Tables for Jacksonville Beach, Florida
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Jacksonville Beach
Click for Map
Mon -- 02:18 AM EDT     -0.56 feet Low Tide
Mon -- 06:40 AM EDT     Moonrise
Mon -- 06:56 AM EDT     Sunrise
Mon -- 08:20 AM EDT     5.53 feet High Tide
Mon -- 02:31 PM EDT     New Moon
Mon -- 02:31 PM EDT     -0.82 feet Low Tide
Mon -- 08:00 PM EDT     Sunset
Mon -- 08:07 PM EDT     Moonset
Mon -- 08:47 PM EDT     6.21 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.60.2-0.5-0.30.72.23.74.85.55.44.63.21.70.2-0.7-0.70.31.83.5566.25.74.5

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
Click for Map
Mon -- 01:14 AM EDT     -2.38 knots Max Ebb
Mon -- 04:58 AM EDT     0.01 knots Slack
Mon -- 06:40 AM EDT     Moonrise
Mon -- 06:56 AM EDT     Sunrise
Mon -- 07:33 AM EDT     2.14 knots Max Flood
Mon -- 10:30 AM EDT     -0.01 knots Slack
Mon -- 01:29 PM EDT     -2.39 knots Max Ebb
Mon -- 02:31 PM EDT     New Moon
Mon -- 05:06 PM EDT     0.01 knots Slack
Mon -- 07:55 PM EDT     2.78 knots Max Flood
Mon -- 08:00 PM EDT     Sunset
Mon -- 08:07 PM EDT     Moonset
Mon -- 11:05 PM EDT     -0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-2.1-2.4-2.3-2-1.201.322.11.70.7-0.7-1.9-2.4-2.4-2.1-1.4-0.21.32.52.82.51.60.2

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Jacksonville, FL (0,6,7,8)
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Ground Weather Radar Station Jacksonville, FL
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weather_mapweather_map weather_map

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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.