Wednesday, August21, 2019 L-36.com


Marine Weather and Tides
Butler Beach, FL

Version 3.4
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7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:54AMSunset 8:01PM Wednesday August 21, 2019 12:42 PM EDT (16:42 UTC) Moonrise 10:43PMMoonset 11:07AM Illumination 65% Phase: Waning Gibbous; Moon at 21 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:201908212200;;983337 Fzus52 Kjax 211312 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 912 Am Edt Wed Aug 21 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. Amz450-452-454-212200- 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- 912 Am Edt Wed Aug 21 2019
Rest of today..South to southeast winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 9 seconds. Inland waters a light chop.
Tonight..South winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 9 seconds. Inland waters a light chop.
Thursday..Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 9 seconds. Inland waters smooth.
Thursday night..South southeast winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 8 seconds. Inland waters a light chop.
Friday..East southeast winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 8 seconds. Inland waters smooth.
Friday night..South southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Saturday..East southeast winds 5 to 10 knots. Seas 2 to 3 feet. Showers likely and a slight chance of Thunderstorms.
Saturday night..South southeast winds 5 to 10 knots. Seas 2 to 3 feet. A chance of showers and Thunderstorms.
Sunday..East winds 5 to 10 knots. Seas 2 to 3 feet. Showers likely and a slight chance of Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 912 Am Edt Wed Aug 21 2019
Synopsis.. Surface high pressure will extend over north florida today through Thursday. A broad area of low pressure will approach the southeast florida atlantic coast late Friday, then begin to lift northward into the weekend.
Gulf stream.. The approximate location of the west wall of the gulf stream as of aug 20, 2019 at 1200 utc... 64 nautical miles east of flagler beach. 73 nautical miles east of saint augustine beach. 82 nautical miles east of jacksonville beach. 94 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Butler Beach, FL
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location: 29.77, -81.26     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 211347
afdjax
area forecast discussion
national weather service jacksonville fl
947 am edt Wed aug 21 2019

Update
Weak upper level short wave energy around a broad low across sw
ga SE al will continue to stream high cirrus across much of the
area today. In the low mid levels, the 1000-700 mb ridge axis was
positioned across SE ga, with steering flow sse < 10 kts. Goes
pwat and jax 12z indicated drier air moving across NE fl with
precipitable water down to 1.82 inches (normal around 1.8 inches) while
pwat across SE ga was near 2 inches under the mean layer ridge
axis. There were a couple of weak inverted trough axes this
morning triggering showers and sprinkles, one extending inland
from the fl gulf coast stretching NE toward our western ga zones,
and the other offshore of the central fl coast with a few showers
across our outer fl waters.

Passing high clouds and mean layer 1000-700 mb ridge across the
local area will temper both instability and deep layer convective
growth across the area today, trending toward near to below normal
rain chances for most zones. Expect first convective growth in the
early-mid afternoon across SE ga near the lingering trough axis
and also along the east coast sea breeze front as it drifts inland
toward the st. Johns river basin. Precipitation will be slow and
erratic across SE ga under the mean ridge axis and more stable
conditions aloft, while slightly stronger storm motion to the wnw
across NE fl will focus sea breeze and airmass convection westward
through the mid to late afternoon, especially south of the i-10
corridor and toward the i-75 corridor into the early evening with
clearing along the atlantic coast. 12z jax RAOB indicated
seasonally cool 500 mb temps near -7 deg c and near climo mid
level lapse rates of 5.8-6 c km, with the main change the past 24
hrs drier air in the low levels which will tend to limit
convective coverage across NE fl. Very weak winds aloft with no
shear. This environment supports pulse storms today with the major
hazards being locally heavy rainfall due to slow storm motion and
gusty wet downburst winds.

Partly cloudy skies will prevail as temperatures trend near
normal with highs in the low 90s inland to mid upper 80s coast
under onshore SE flow.

Aviation
PrevailingVFR conditions this morning then tempo restrictions
possible this afternoon in passing showers and tstorms, focused
inland after 18z. Light sse winds < 5 kts this morning will
increase along coastal terminals to SE near 8-11 kts this
afternoon as east coast sea breeze develops and shifts inland.

Marine
Bermuda ridge axis will dominate over the local waters. A few
morning showers and isolated tstorms, then best chances of
afternoon convection focus inland, clearing the coast by mid-
afternoon. Light ssw winds 10 kts or less this morning over ga
waters will transition to sse into the afternoon.

Rip currents: low risk today and again thu.

Preliminary point temps pops
Amg 91 73 92 73 30 10 20 10
ssi 88 76 90 77 10 0 10 10
jax 91 74 92 75 20 0 10 10
sgj 89 74 89 75 20 0 10 0
gnv 91 72 91 73 30 20 20 20
ocf 91 72 91 73 40 20 20 20

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... None.

Enyedi nelson


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAUF1 - St. Augustine, FL 6 mi42 min SE 8 G 8.9 82°F 82°F1020.6 hPa (+0.3)
GTXF1 - Guana Tolomato Matanzas Reserve, FL 8 mi117 min SE 6 86°F 1022 hPa86°F
41117 19 mi42 min 83°F2 ft
LTJF1 43 mi54 min 86°F
JXUF1 44 mi54 min 85°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 44 mi54 min ESE 8 G 13 85°F 84°F1020.9 hPa
BLIF1 45 mi54 min WSW 2.9 G 6 87°F 1021.5 hPa77°F
DMSF1 45 mi54 min 84°F
NFDF1 48 mi54 min SW 5.1 G 7 83°F 1022.3 hPa

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

Link to 5 minute data for KSGJ

Wind History from SGJ (wind in knots)
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Last 24hrE10E9E6E7E6--E6SE4SE3SE3----------SW3--CalmCalm--------SE8
1 day agoS11--SE9--SE12SE12SE7SW3S3S3----------CalmCalm--NW3NW3Calm--E7E7
2 days agoSW7W14
G22
SW6SW5W44SW3W9
G18
SW5S5----S4--SW5----S6SW5SW4SW4SW5SW8SW9

Tide / Current Tables for St. Augustine Beach, Florida (2)
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St. Augustine Beach
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Wed -- 12:13 AM EDT     4.32 feet High Tide
Wed -- 06:26 AM EDT     0.36 feet Low Tide
Wed -- 06:55 AM EDT     Sunrise
Wed -- 12:07 PM EDT     Moonset
Wed -- 12:37 PM EDT     4.42 feet High Tide
Wed -- 06:53 PM EDT     0.75 feet Low Tide
Wed -- 07:59 PM EDT     Sunset
Wed -- 11:42 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.34.23.62.71.60.80.40.51.1233.84.34.443.32.31.40.90.81.11.82.63.4

Tide / Current Tables for St. Augustine Beach, Florida
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St. Augustine Beach
Click for Map
Wed -- 12:14 AM EDT     4.38 feet High Tide
Wed -- 06:25 AM EDT     0.69 feet Low Tide
Wed -- 06:55 AM EDT     Sunrise
Wed -- 12:07 PM EDT     Moonset
Wed -- 12:40 PM EDT     4.46 feet High Tide
Wed -- 06:51 PM EDT     1.13 feet Low Tide
Wed -- 07:59 PM EDT     Sunset
Wed -- 11:42 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.44.23.62.61.71.10.70.81.222.93.84.34.443.22.31.61.21.11.41.92.73.5

Weather Map and Satellite Images
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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 (12,3,4,5)
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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.