Tuesday, October22, 2019 L-36.com


Marine Weather and Tides
Pomona Park, FL

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
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 7:29AMSunset 6:48PM Tuesday October 22, 2019 8:28 PM EDT (00:28 UTC) Moonrise 12:17AMMoonset 2:22PM Illumination 31% Phase: Waning Crescent; Moon at 24 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 Coastal Waters From St. Augustine To Flagler Beach Fl Out 20 Nm- 449 Pm Edt Tue Oct 22 2019
.small craft should exercise caution...
Tonight..Northwest winds increasing to 15 to 20 knots. Seas building to 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Inland waters becoming choppy. A chance of showers and a slight chance of Thunderstorms during the early evening.
Wednesday..North winds 15 to 20 knots, becoming northeast during the afternoon. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 6 seconds. Inland waters a moderate chop.
Wednesday night..East northeast winds 15 knots. Seas 3 to 4 feet. Dominant period 5 seconds. Inland waters a moderate chop. A chance of showers.
Thursday..East northeast winds 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 6 seconds. Inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Thursday night and Friday..East winds 10 to 15 knots. Seas 4 to 5 feet with occasional seas up to 6 feet. Dominant period 6 seconds. Inland waters a light chop. Showers likely and a slight chance of Thunderstorms.
Friday night..East winds 10 to 15 knots. Seas 3 to 4 feet. Showers likely and a slight chance of Thunderstorms.
Saturday through Sunday..Southeast winds 10 knots. Seas 3 to 4 feet. Showers likely and a slight chance of Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 449 Pm Edt Tue Oct 22 2019
Synopsis.. A cold front will cross our local waters early this evening, followed by an abrupt increase in northwesterly winds towards midnight that will produce a short period of small craft advisory conditions for most of our waters overnight through the early morning hours on Wednesday. High pressure will then shift northeastward into the carolinas by Wednesday evening, resulting in weak coastal trough formation over our near shore waters with increasing chances for showers and a few Thunderstorms. Strong high pressure will shift off the mid-atlantic coast on Friday as low pressure develops over the western gulf of mexico and moves northward through the lower and middle mississippi valleys on Saturday. This weather pattern will keep onshore winds in place on Friday and Saturday with widespread showers and a few Thunderstorms possible.
Gulf stream.. The approximate location of the west wall of the gulf stream as of oct 19, 2019 at 1200 utc... 47 nautical miles east of flagler beach. 49 nautical miles east of saint augustine beach. 57 nautical miles east of jacksonville beach. 85 nautical miles east of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Pomona Park, FL
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location: 29.54, -81.47     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 222345
afdjax
area forecast discussion
national weather service jacksonville fl
745 pm edt Tue oct 22 2019

Aviation
[through 00z Thursday]
vfr conditions prevail through the period for all TAF sites.

Scattered cirrus lingers tonight from behind the frontal passage.

Skies clear tomorrow as high pressure builds in. Winds shift from
west-northwesterly flow tonight to northeasterly tomorrow. Gusty
winds form along the coast leading to gusts up to 20 knots at sgj.

Prev discussion [602 pm edt]
Brief shot of cool and dry air overspreads our area tonight and
Wednesday...

Extended period of warm and humid weather from Thursday through
the weekend...

Near term [through Wednesday]
A much cooler and drier air mass will arrive on the heels of a
refreshing northwesterly breeze overnight, with the front moving
offshore before midnight. Strong southwesterly flow aloft will
keep a few thin cirrus clouds overhead overnight. Winds will shift
to northerly towards sunrise, and breezy conditions will develop
during the predawn hours at coastal locations. Lows tonight will
fall to the upper 40s for locations north and west of waycross,
with 50-55 expected elsewhere inland, ranging to near 60 at
coastal locations. High pressure will then shift northeastward on
Wednesday, resulting in low level flow quickly veering to
northeasterly by the afternoon hours, which will shut off cool air
advection. A very dry air mass will remain in place inland, and
cirrus cloud cover may increase from southwest to northeast during
the afternoon hours as strong ridging aloft to the southeast of
our area keeps a strong southwesterly flow in place aloft. Highs
should remain just below late october climatology, with mid 70s
expected at most locations, ranging to the upper 70s in north
central florida.

Short term [Wednesday night through Friday night]
Ridging aloft will remain in place over the florida peninsula and
the bahamas as a potent shortwave trough dives southward down the
spine of the rockies and pivots eastward along the red river
valley of northern texas by Friday night. This pattern will result
in a strengthening surface ridge over the carolinas shifting
offshore of the mid-atlantic states, which creates a coastal
trough over our near shore waters by late Wednesday night and
Thursday. Onshore winds will quickly modify our air mass on
Wednesday evening, and strengthening isentropic lift associated
with the developing coastal trough could even drive an isolated
shower or two onshore along the i-95 corridor in coastal flagler
and st. Johns counties by sunrise on Thursday. Decoupling winds
and thin cirrus over inland southeast georgia should allow lows to
fall to the lower 50s, with 50s elsewhere inland and near 60 over
inland north central florida. A light onshore breeze will keep the
coast much warmer, with lower 60s for coastal southeast georgia
and mid to upper 60s for coastal northeast florida, where
multilayered cloud cover will be increasing after midnight.

Cloud cover will continue to increase from south to north on
Thursday as the coastal trough remains in place over the near
shore atlantic waters adjacent to northeast florida and deep
southwesterly flow prevails aloft. Scattered showers and possibly
an embedded elevated thunderstorm are expected to develop over
north central and coastal northeast florida, with dry conditions
expected elsewhere. Rising heights aloft should counter increasing
cloud cover, and highs will generally climb to the upper 70s to
lower 80s.

Deep-layered moisture will then increase from south to north on
Thursday night and Friday as southwesterly flow aloft prevails and
a low level veering wind profile develops, pushing pwat values up
to the 1.6-1.8 inch range by late Friday. The coastal trough will
move onshore and will lift northward as a pseudo warm front, with
isentropic lift possibly developing a few showers overnight at
inland locations and chances for isolated convection continuing
at coastal locations. Plenty of cloud cover and warm air advection
will keep inland lows in the 60s on Thursday night, ranging to the
lower 70s along the northeast florida coast. Scattered
convection will be possible area-wide on Friday, with numerous
showers expected to develop over north central and coastal
northeast florida by the afternoon hours. Highs will generally
climb to 80-85 at most locations, except upper 70s for coastal
southeast georgia. Warm and humid weather will continue Friday
night as low pressure moves onshore over coastal louisiana and
strengthens overnight over the lower mississippi valley. Periods
of isentropic lift north of a warm front over the florida
peninsula will keep at least isolated to widely scattered shower
chances in place over our area Friday night, with lows in the 60s
inland and around 70 at coastal locations.

Long term [Saturday through Monday night]
Deep ridging aloft will remain in place over the bahamas and the
florida peninsula. This will direct a potent shortwave trough from
the red river valley of northern texas on Friday night quickly
northeastward towards the eastern great lakes region by Sunday,
keeping a warm and humid air mass in place through early next
week locally. Weak shortwave troughs embedded within a persistent
and deep southwesterly flow pattern aloft will result in periods
of scattered convection over our region. Highs will generally
climb to the low to mid 80s, with lows in the 60s inland and the
lower 70s at coastal locations.

Marine
A cold front will cross our local waters early this evening,
followed by an abrupt increase in northwesterly winds towards
midnight that will produce a short period of small craft advisory
conditions for most of our waters overnight through the early
morning hours on Wednesday. Seas will build to 3-5 feet near shore
and 4-6 feet offshore. High pressure will then shift northeastward
into the carolinas by Wednesday evening, resulting in weak
coastal trough formation over our near shore waters with
increasing chances for showers and a few thunderstorms. Strong
high pressure will shift off the mid-atlantic coast on Friday as
low pressure develops over the western gulf of mexico and moves
northward through the lower and middle mississippi valleys on
Saturday. This weather pattern will keep onshore winds in place on
Friday and Saturday with widespread showers and a few
thunderstorms possible. Winds and seas should remain at caution
levels offshore through at least Thursday night, with 3-5 feet
expected near shore.

Fire weather
A cold front moving through our area overnight will result in
strengthening northwesterly transport winds that will shift to
northerly towards sunrise. This will usher in a much drier air
mass to our region on Wednesday, with minimum relative humidity
values falling to near 25 percent during the afternoon hours
throughout southeast georgia and near 30 percent for inland
northeast and north central florida. Surface and transport winds
will shift to northeasterly during the afternoon hours, with
decreasing speeds at inland locations precluding red flag
conditions. Breezy conditions will prevail at coastal locations,
where humidity values will remain well above critical thresholds.

Preliminary point temps pops
Amg 48 74 49 76 62 0 0 0 10 20
ssi 58 73 62 76 69 10 0 10 20 20
jax 53 76 59 79 68 20 0 10 20 20
sgj 63 75 67 79 72 30 0 30 40 40
gnv 56 77 60 82 68 20 0 20 20 10
ocf 59 78 62 84 69 10 0 20 40 10

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... Small craft advisory from 2 am to 10 am edt Wednesday 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-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.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
GTXF1 - Guana Tolomato Matanzas Reserve, FL 15 mi104 min WSW 2.9 81°F 1015 hPa71°F
SAUF1 - St. Augustine, FL 24 mi89 min W 7 G 8 80°F 80°F1014.4 hPa (+1.6)
41117 38 mi59 min 80°F2 ft

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 KOMN

Wind History from OMN (wind in knots)
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Last 24hr----------------------SW4SW6SW6SW6W6SW8SW10
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1 day ago----------------------CalmCalmCalmE4E5SE7SE6SE6SW6W13CalmCalmCalm
2 days ago----------------------SW5SW6W6W12
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Tide / Current Tables for Sutherlands Still, Dunns Creek, Florida
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Sutherlands Still
Click for Map
Tue -- 01:17 AM EDT     Moonrise
Tue -- 06:06 AM EDT     3.67 feet Low Tide
Tue -- 07:32 AM EDT     Sunrise
Tue -- 10:32 AM EDT     4.32 feet High Tide
Tue -- 03:22 PM EDT     Moonset
Tue -- 05:14 PM EDT     3.65 feet Low Tide
Tue -- 06:48 PM EDT     Sunset
Tue -- 11:10 PM EDT     4.43 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.34.13.93.83.73.73.73.73.94.24.34.34.34.13.93.73.73.73.73.73.84.14.44.4

Tide / Current Tables for Palatka, St. Johns River, Florida
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Palatka
Click for Map
Tue -- 01:17 AM EDT     Moonrise
Tue -- 05:19 AM EDT     4.00 feet Low Tide
Tue -- 07:32 AM EDT     Sunrise
Tue -- 10:33 AM EDT     4.80 feet High Tide
Tue -- 03:22 PM EDT     Moonset
Tue -- 04:19 PM EDT     3.93 feet Low Tide
Tue -- 06:48 PM EDT     Sunset
Tue -- 11:18 PM EDT     4.98 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.74.54.24.14444.24.44.74.84.84.74.44.243.93.944.14.44.74.95

Weather Map
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wmap_A
GEOS 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 (20,4,5,8)
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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.