Monday, February19, 2018 L-36.com


Marine Weather and Tides
Neptune 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 6:59AMSunset 6:18PM Monday February 19, 2018 2:42 PM EST (19:42 UTC) Moonrise 9:24AMMoonset 9:59PM Illumination 20% Phase: Waxing Crescent; Moon at 4 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- 1057 Am Est Mon Feb 19 2018
.dense fog advisory in effect until 3 pm est this afternoon...
Rest of today..East winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 6 seconds. Inland waters smooth. Areas of fog through the day. A slight chance of showers. Visibility 1 nm or less.
Tonight..East southeast winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 6 seconds. Inland waters a light chop. A slight chance of showers late in the evening. Areas of fog late in the evening, then widespread dense fog after midnight.
Tuesday..East southeast winds 5 to 10 knots. Seas 2 to 4 feet. Dominant period 6 seconds. Inland waters a light chop. Widespread dense fog in the morning. A slight chance of showers in the morning.
Tuesday night..Southeast winds 5 to 10 knots. Seas 2 to 4 feet. Dominant period 6 seconds. Inland waters a light chop.
Wednesday and Wednesday night..Southeast winds 5 to 10 knots. Seas 2 to 4 feet. Inland waters mostly smooth.
Thursday through Friday..Southeast winds 5 to 10 knots. Seas 2 to 4 feet. Inland waters mostly smooth.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 1057 Am Est Mon Feb 19 2018
Synopsis.. Dense fog expected this morning, and again tonight, especially near the coast, and mainly north of st augustine. High pressure ridge will be centered to the northeast through Wednesday. The ridge center will then be to the east into the weekend.

7 Day Forecast for Marine Location Near Neptune Beach, FL
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location: 30.31, -81.43     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 191935
afdjax
area forecast discussion
national weather service jacksonville fl
235 pm est Mon feb 19 2018

Near term tonight and Tuesday
Backdoor cold front is still wedged along the coast of southeast
georgia and slowly lifting north. The associated dense sea fog
bank over the nearshore waters is getting pushed onshore and
being mixed out as soon as it hits the warmer land areas. The
bulk of this fog bank will likely get completely scoured out by
the late evening hours. As a result, some of the model data seems
be too bullish showing sea fog drifting inland along the i-95
corridor this evening. Fog will likely hold off until late tonight
when areas of fog will be possible due to the continued moist
low-level onshore flow from the atlantic. A few spotty showers off
the atlantic cannot be completely ruled out in this pattern but
not enough to warrant placement in the forecast at this time.

Another warm day expected on Tuesday as high pressure builds east
of the area. Near record temps will be possible across locations
well inland. Onshore flow will keep temps a little lower at the
beaches. A few light showers will be possible in moist onshore
flow. A little better chance for some shower activity will be
closer to the i-75 corridor during the afternoon hours as a weak
embedded wave moves north around the western periphery of large
upper high.

Short term Tue night through thu...

continued above normal temperatures with a warming trend with
mostly dry conditions and late night morning fog as upper level
ridge strengthens across the region. The surface ridge axis will
be north of the region, which will bring prevailing ese surface
flow which could bring some passing light coastal showers over the
adjacent atlantic waters and just inland associated with some weak
coastal troughs as they pivot westward. Could also have some early
evening showers generally west of highway 441 Tue night due to sea
breeze interactions, but overall despite a decent cumulus field
each day, the mid and upper levels will be too stable and too dry
to support deeper convective growth and tend to inhibit shower
formation. Late night and morning fog will continue to be the main
sensible weather hazard over the short term hazard, with dense fog
advisories likely.

High temperatures will continue well above normal with values in
the mid upper 70s coast to low 80s inland. Lows will generally
range in the 60s.

Long term Fri through mon...

continued warmth with gradually increasing rain chances this
period. Friday an influx of moisture associated with a weak
tropical wave moving across the fl peninsula will pivot across the
local area and interact with sea breezes and diurnal heating to
bring a low chance of showers. Dry conditions prevail Sat as mean
layer ridging begins to weakening across the area, with only a low
chance of sea breeze showers across our southern fl zones. Sun
into Mon increasing rain chances as a frontal system drifts
eastward toward the ms river valley with increasing mid upper
level wsw flow out of the gomex raising moisture content and
bringing some weak mid level forcing across the area, especially
Sunday into Sun night. Models shear out dynamics and decrease
moisture as the front begins to sag southward across SE ga late
sun night into mon, with decreasing rain chances into Mon across
ne fl as the boundary pushes across the area as more of a backdoor
cold front.

Aviation
Vfr conditions expected to prevail through this evening. Ifr
conditions will be possible after midnight but models are starting
to back off quite a bit with the sea fog along the coast this
evening. Have left the more pessimistic forecast tonight in place
for now but confidence in widespread dense fog is decreasing.

Marine
Dense sea fog expected to lift by this evening. Some additional
fog could develop tonight but confidence is not very high in sea
fog becoming dense. High pressure northeast of the area will
remain firmly in control through the rest of the week.

Southeasterly flow less than 15 knots will prevail through the end
of the week and into the weekend.

Rip currents: low risk.

Preliminary point temps pops
Amg 60 82 64 83 10 20 10 10
ssi 60 72 61 75 10 20 20 10
jax 61 80 64 81 10 20 10 10
sgj 64 78 64 78 10 20 10 10
gnv 62 84 64 84 10 20 10 0
ocf 63 85 65 85 10 20 10 0

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... Dense fog advisory until 3 pm est this afternoon 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.

Shuler enyedi


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LTJF1 5 mi48 min 65°F 62°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 6 mi42 min NE 7 G 8 61°F 59°F1026.8 hPa (-2.0)
BLIF1 8 mi42 min E 6 G 8 74°F 1027.2 hPa (-2.2)74°F
DMSF1 9 mi42 min 64°F
JXUF1 10 mi42 min 65°F
FRDF1 - 8720030 - Fernandina Beach, FL 25 mi42 min N 5.1 G 7 68°F 61°F1027.8 hPa (-2.0)
41117 28 mi50 min 64°F2 ft
41112 - Offshore Fernandina Beach, FL (132) 29 mi72 min 60°F3 ft
SAUF1 - St. Augustine, FL 33 mi42 min N 6 G 7 61°F 60°F1026.7 hPa (-2.1)
RCYF1 36 mi42 min 72°F
GTXF1 - Guana Tolomato Matanzas Reserve, FL 46 mi57 min NNE 4.1 69°F 1029 hPa65°F

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Jacksonville Craig Municipal Airport, FL5 mi49 minE 710.00 miPartly Cloudy79°F68°F69%1026.3 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL6 mi50 minNE 79.00 miOvercast66°F61°F84%1026.7 hPa
Jacksonville Naval Air Station, FL14 mi49 minVar 510.00 miPartly Cloudy78°F64°F62%1025.7 hPa
Jacksonville International Airport, FL19 mi46 minSE 13 G 1610.00 miPartly Cloudy80°F64°F58%1026 hPa
Fernandina Beach Municipal Airport, FL21 mi64 minE 610.00 miFair72°F62°F73%1026.7 hPa
Northeast Florida Regional Airport, FL24 mi46 minENE 710.00 miFair73°F66°F79%1026.7 hPa

Wind History from CRG (wind in knots)
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Last 24hrE9E8E8E7E7E6E7NE33N5NE5N3CalmNE3CalmCalmCalmN3N5N6N54E9E7
1 day agoSW9
G16
W8W9W7W3W7SW6SW6SW6W5SW5S5SW5W4W6W7W5W4W5W7NW10N74E9
2 days agoW14
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W11SW8SW7W8SW8W5CalmSW5W4SW4SW4CalmW7W3W5W6W4W6W5SW4SW12

Tide / Current Tables for Pablo Creek, ICWW bridge, St. Johns River, Florida
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Pablo Creek
Click for Map
Mon -- 05:28 AM EST     -0.23 feet Low Tide
Mon -- 07:02 AM EST     Sunrise
Mon -- 09:24 AM EST     Moonrise
Mon -- 12:02 PM EST     3.71 feet High Tide
Mon -- 05:52 PM EST     -0.31 feet Low Tide
Mon -- 06:17 PM EST     Sunset
Mon -- 09:59 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.63.32.41.30.4-0.2-0.20.31.122.93.53.73.52.81.80.7-0.1-0.3-00.71.72.63.3

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
Click for Map
Mon -- 12:21 AM EST     -0.00 knots Slack
Mon -- 02:57 AM EST     -2.18 knots Max Ebb
Mon -- 06:58 AM EST     0.00 knots Slack
Mon -- 07:02 AM EST     Sunrise
Mon -- 09:24 AM EST     Moonrise
Mon -- 09:41 AM EST     2.06 knots Max Flood
Mon -- 12:43 PM EST     -0.00 knots Slack
Mon -- 03:22 PM EST     -2.18 knots Max Ebb
Mon -- 06:16 PM EST     Sunset
Mon -- 07:20 PM EST     0.00 knots Slack
Mon -- 09:58 PM EST     Moonset
Mon -- 10:05 PM EST     2.25 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.4-0.7-1.8-2.2-1.9-1.4-0.8011.921.50.7-0.3-1.4-2.1-2.1-1.6-1.1-0.30.71.72.21.9

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 (14,3,4,5)
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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.