Friday, April10, 2020
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Marine Weather and Tides
Hastings, FL

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 7:01AMSunset 7:50PM Friday April 10, 2020 1:59 PM EDT (17:59 UTC) Moonrise 10:01PMMoonset 8:06AM Illumination 92% Phase: Waning Gibbous; Moon at 18 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:202004102000;;879316 Fzus52 Kjax 101441 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 1041 Am Edt Fri Apr 10 2020 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. Amz450-452-454-102000- 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- 1041 Am Edt Fri Apr 10 2020
.small craft exercise caution...
Rest of today..North winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 4 seconds. Inland waters a moderate chop. A slight chance of showers.
Tonight..North northeast winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 4 seconds. Inland waters a moderate chop.
Saturday..East winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Inland waters a moderate chop.
Saturday night..Southeast winds 15 to 20 knots. Seas 2 to 4 feet. Dominant period 4 seconds. Inland waters a moderate chop. A slight chance of showers.
Sunday..South southeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 5 seconds. Inland waters choppy. A chance of showers and a slight chance of Thunderstorms.
Sunday night..South winds 20 to 25 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. A chance of showers and a slight chance of Thunderstorms.
Monday..South southwest winds 20 to 25 knots becoming west southwest 10 to 15 knots in the afternoon. Seas 4 to 6 feet with occasional seas up to 8 feet. Showers likely and a chance of Thunderstorms.
Monday night..West winds 10 to 15 knots becoming northwest 5 to 10 knots after midnight. Seas 2 to 4 feet. A chance of showers and Thunderstorms.
Tuesday..Northeast winds 5 to 10 knots. Seas 2 to 4 feet. A chance of showers and a slight chance of Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 1041 Am Edt Fri Apr 10 2020
Synopsis.. A cold front will continue moving south through the area waters this morning and bring a chance of showers through the afternoon. High pressure will build to the northwest of the waters by later today with elevated north to northeast winds behind the cold front subsiding late in the day as the pressure gradient relaxes. The high will then move north of the waters Saturday morning and then offshore by Saturday afternoon. A warm front will lift north of the waters Sunday with a strong cold front expected to move through the area waters on Monday with strong to severe Thunderstorms possible. The front will then stall over the waters on Tuesday with more rain showers expected.
Gulf stream.. The approximate location of the west wall of the gulf stream as of apr 09, 2020 at 1200 utc... 64 nautical miles east of flagler beach. 75 nautical miles east of saint augustine beach. 86 nautical miles east of jacksonville beach. 96 nautical miles east of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Hastings, FL
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location: 29.76, -81.56     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 101724 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 124 PM EDT Fri Apr 10 2020

AVIATION. [Through 18Z Saturday]

The cold front from this morning has cleared, with only isolated showers at this point in north-central FL. Behind the front VFR conditions are anticipated through the period with gusty winds from the north that will begin to settle down around 00Z. Winds are still anticipated to stay around 5-10 kts overnight, however, which should prevent fog development.

PREV DISCUSSION [1055 AM EDT].

NEAR TERM [Through Tonight].

Regional 14Z surface analysis shows the cold front stretching roughly from Flagler Beach westward to Ocala and into the eastern GoMex. Behind the front, near the FL-GA state line, scattered light rain showers and breezy winds continue. These showers will continue to push southeastward with the cold front through the day, with rain expected to clear the local area by around 4 pm, though breezy winds will likely last through the afternoon. A cooler air mass will continue to advect into the area through the day, but should be offset a little by daytime heating. Temperatures will be mostly in the 60s to low 70s throughout the daytime hours, then drop into the 40s overnight, with low 50s along the coast and in north- central Florida.

SHORT TERM [Saturday Through Sunday].

Sat . broad mid/upper level trough will move off the east coast while weak mid level ridging builds into our area. A closed 500 mb low over the Southwest U.S. will open up and translate east- northeast into the southern Plains with associated sfc low deepening over nrn TX /wrn OK. Sfc high pressure initially north of our forecast area Saturday will move quickly eastward into the Atlantic. As as a result, we will see the old cold front located over srn FL to work northward as a warm front Saturday, pushing into our zones late Saturday night. Mostly clear conditions through midday Saturday, but expect to see some increase low and high clouds with low level winds veering in response to the sfc high moving northeast of the area. Max temperature in the upper 70s and lower 80s on Saturday.

Saturday night..fairly rapid changes occur as the warm front lifts up over the area . with stronger lift and a moisture influx coming in from the south and southwest. With initial air- mass fairly dry, anticipate relatively low POPs at about 15-30 percent. Any late night and early morning convection that develops would likely be elevated and t-storm probabilities look pretty low at this time. MUCAPE values may reach several hundred J/kg after 06z and with effective shear values up to about 50 kt may need to monitor a potential for an isolated hail-producing storm.

Sunday . warm front should be lifting up through the rest of the forecast area Sunday morning, with chances of showers and potential storms lifting northward in tandem with the front. It appears by Sunday afternoon we will be fully in the warm sector ahead of the sfc low over OK . with the trailing cold front pushing into the northwest Gulf of Mexico. Large scale forcing is not too impressive but anticipate low pressure sfc troughing to become oriented north-northwest to south-southeast associated with the west coast sea and east coast sea breezes. This will help maintain a chance of showers and storms during the aftn despite a mid level subsidence inversion. More aftn sun and breezy southerly winds will boost max to rebound back into the 80s to possible about 90 over northeast FL and around mid 80s over southeast GA. Can't rule out some isolated strong/organized storms given a relatively conservative estimate of MLCAPE of 750 to 1000 J/kg and effective shear values of about 40 kt Sunday night. both NAM and GFS show a dry slot moving in ahead of the approaching front so some lull in the convective chances seems apparent. Breezy southerly flow expected with lows only falling to the upper 60s and lower 70s. Models in good agreement showing pre-frontal squall line in association with the cold front approaching the area. Main differences are with the timing, with the 00Z GFS just a few hours faster than the the NAM and the ECMWF. Storm Prediction Center has a portion of our west and northwest zones in the slight risk for through Sunday-Sunday night mainly due to the approaching pre-frontal squall line.

LONG TERM [Monday Through Thursday].

The pre-frontal squall line and cold front are progged to move east-southeast across the forecast area Monday, though the southeast progression may slow a bit as flow aloft becomes southwesterly. Front appears to be slowly stalling over the srn zones and north central FL Monday night while weak disturbances in southwest flow aloft support some low end chance of rain Monday night over srn parts of area Tue-Wed. guidance is not in very good agreement but suggests the front will move back north as a warm front as a wave of low pressure develops along the front over the ern GOMEX and moves northeast to east. This may bring higher rain chances back over the area Tue-Wed. After Wed night, front will push back southward and drier air settles back into the area as high pressure builds in. Temperatures will remain above normal Monday, and may start trend toward normal Tuesday through Thursday.

MARINE.

A cold front will continue moving south through the area waters early this morning and bring a chance of showers through the afternoon. A small craft advisory is posted for the offshore waters with elevated northerly winds of 20-25 knots late this morning into the early afternoon and then weaken towards evening. High pressure will build to the northwest of the waters by later today. The high will then move north of the waters Saturday morning and then quickly offshore by Saturday afternoon. A warm front will lift north of the waters Sunday with a strong cold front expected to move through the area waters on Monday with strong to severe thunderstorms possible. Winds could rise again towards advisory levels Sunday night into Monday as the pressure gradient tightens and ahead of the cold front.

FIRE WEATHER.

Critically low RH Values over portions of southeast GA this afternoon and Saturday, but winds and fuel moistures likely to fall short of criteria for red flag warnings.

PRELIMINARY POINT TEMPS/POPS.

AMG 43 78 59 84 70 / 0 0 30 30 70 SSI 53 73 64 78 70 / 0 0 20 30 40 JAX 52 78 64 86 72 / 0 0 0 30 30 SGJ 56 76 64 83 70 / 0 0 0 30 20 GNV 49 81 63 90 70 / 0 0 0 20 30 OCF 51 83 64 91 71 / 0 0 0 20 20

JAX WATCHES/WARNINGS/ADVISORIES. FL . None. GA . None. AM . Small Craft Advisory until 4 PM EDT this afternoon for 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
SAUF1 - St. Augustine, FL 17 mi59 min N 12 G 13 67°F 67°F1011.7 hPa (+0.0)
GTXF1 - Guana Tolomato Matanzas Reserve, FL 19 mi74 min NNE 7 72°F 1013 hPa55°F
41117 30 mi89 min 70°F3 ft
DMSF1 43 mi59 min 72°F
LTJF1 43 mi65 min 66°F 46°F
BLIF1 44 mi65 min NW 9.9 G 13 68°F 1012.9 hPa47°F
NFDF1 44 mi59 min Calm G 4.1 66°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 45 mi59 min NNW 8.9 G 13 66°F 66°F1012.2 hPa (+0.0)

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Northeast Florida Regional Airport, FL19 mi63 minNW 1210.00 miFair72°F52°F50%1011.9 hPa

Link to 5 minute data for KSGJ

Wind History from SGJ (wind in knots)
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Tide / Current Tables for Palmetto Bluff, St. Johns River, Florida (5)
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Palmetto Bluff
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Fri -- 05:13 AM EDT     4.34 feet High Tide
Fri -- 07:04 AM EDT     Sunrise
Fri -- 09:05 AM EDT     Moonset
Fri -- 11:50 AM EDT     2.92 feet Low Tide
Fri -- 05:35 PM EDT     4.16 feet High Tide
Fri -- 07:50 PM EDT     Sunset
Fri -- 11:01 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.93.23.644.24.34.343.73.43.232.93.13.43.744.14.143.73.43.13

Tide / Current Tables for East Tocoi, St. Johns River, Florida (3)
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East Tocoi
Click for Map
Fri -- 04:59 AM EDT     5.83 feet High Tide
Fri -- 07:04 AM EDT     Sunrise
Fri -- 09:05 AM EDT     Moonset
Fri -- 11:31 AM EDT     4.61 feet Low Tide
Fri -- 05:14 PM EDT     5.67 feet High Tide
Fri -- 07:50 PM EDT     Sunset
Fri -- 11:01 PM EDT     Moonrise
Fri -- 11:44 PM EDT     4.51 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.655.35.55.75.85.75.55.254.84.64.64.85.15.45.65.75.65.45.14.94.74.6

Weather Map
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GEOS 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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (13,3,4,5)
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Ground Weather Radar Station Jacksonville, FL
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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 numerous 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.