Monday, December16, 2019
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Marine Weather and Tides
Gainesville, 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 7:16AMSunset 5:33PM Monday December 16, 2019 3:48 AM EST (08:48 UTC) Moonrise 10:15PMMoonset 11:10AM Illumination 79% Phase: Waning Gibbous; Moon at 19 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:201912161500;;859143 Fzus52 Kjax 160654 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 154 Am Est Mon Dec 16 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. Amz450-452-454-161500- 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- 154 Am Est Mon Dec 16 2019
Today..South southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 9 seconds. Inland waters a moderate chop.
Tonight..South winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 9 seconds. Inland waters a moderate chop.
Tuesday..Southwest winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 9 seconds. Inland waters a moderate chop. Showers likely and a slight chance of Thunderstorms.
Tuesday night..West southwest winds 15 to 20 knots becoming northwest 20 to 25 knots after midnight. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 6 seconds. Inland waters choppy. Showers likely and a slight chance of Thunderstorms.
Wednesday..North winds 20 to 25 knots with gusts to around 35 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 6 seconds. Inland waters rough. A chance of showers.
Wednesday night..North winds 20 to 25 knots. Seas 4 to 6 feet with occasional seas up to 8 feet.
Thursday through Friday..East northeast winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. A chance of.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 154 Am Est Mon Dec 16 2019
Synopsis.. High pressure off the mid-atlantic coast shifts eastward as southerly winds develop over local waters today. A cold front moves through on Tuesday bringing showers with embedded Thunderstorms. Strong northerly winds develop behind the front on Wednesday causing small craft advisory conditions across most of our local waters. Winds and waves gradually decrease into Friday as onshore flow develops.
Gulf stream.. The approximate location of the west wall of the gulf stream as of dec 14, 2019 at 1200 utc... 42 nautical miles east northeast of flagler beach. 41 nautical miles east of saint augustine beach. 50 nautical miles east southeast of jacksonville beach. 74 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Gainesville, FL
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location: 29.71, -82.3     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 160751 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 251 AM EST Mon Dec 16 2019

NEAR TERM [Through Tonight].

Patchy to areas of fog dissipate across the region after sunrise. Surface high pressure off the mid-Atlantic moves eastward as warm, southerly flow over the region causes temperatures to rise well above climo. Highs will range from the mid 70s across inland southeast Georgia to the low 80s over central Florida. Clouds increase tonight ahead of the next cold front approaching the area. Lows remain above climo ranging from the upper 50s to low 60s.

SHORT TERM [Tuesday Through Wednesday].

Tuesday and Tuesday Night . Next cold frontal passage still on track to enter SE GA by the afternoon hours with numerous showers and isolated storms expected. The main low and energy further north with this system will limit the severe weather potential but a few strong storms with gusty winds is possible. Prior to the convection expect breezy southwest winds to push Max temps into the mid to upper 70s for SE GA and into the lower 80s for Northeast Florida. Cold frontal convection will fade as it pushes into NE FL during the evening hours as the front slows down with some lingering showers along the NE FL coastal areas and adjacent waters into the overnight hours. Clearing skies towards the morning hours will allow for Min Temps to fall into the 40s inland and near 50 along the coast.

Record High Maximum Temps for Tuesday December 17th . JAX 82/2015 . GNV 85/1956 . AMG 82/1956 . SSI 80/1971 . CRG 83/2015

Wednesday and Wednesday Night . Skies becoming clear/sunny as High Pressure builds well Northwest of the region and cold air advection in Northwest steering flow will hold Max temps below normal only in the 50s for most of the region and breezy North winds through the day. High pressure builds north of the region over the Mid Atlc States and clear skies and light north flow will set the stage for a light freeze over inland SE GA and the Suwannee River Valley of North FL with lows near 30 degrees, otherwise widespread lows in the 30s over other inland areas and near 40 along the coast as the surface flow becomes N-NE along the coast. Some patchy frost will be possible but the North flow around 5 mph through the night will limit frost formation, but the wind flow will drop wind chills into the upper 20s around sunrise Thursday Morning for most inland areas.

LONG TERM [Thursday Through Sunday].

Thursday . High pressure builds into the Carolinas and sets up breezy Northeast flow off the Atlc and expect a slow increase in low level moisture with some coastal showers possible by Thursday Night, otherwise temps remaining below normal with highs still in the 50s for the coast and SE GA and around 60 for NE FL.

Friday/Saturday/Sunday . Rainfall chances increase as a combination of onshore flow, coastal trof and shortwave energy pushing across the region in the W-SW flow aloft. Slight chance of showers on Friday will increase to Chance of Showers on Saturday and Sunday (30-50%) but the breezy onshore flow will slowly increase temps back closer to normal values with highs in the 60s and lows in the 40s/50s.

AVIATION. [Through 06Z Tuesday]

Fog has begun to develop at VQQ, GNV, and SSI. Patchy to areas of fog development is possible for all TAF sites. GNV and SSI have the potential for visibilities to drop to a 1/2 mi or less. After sunrise, fog lifts and all sites return to VFR. Southerly winds develop through the day to just below 10 knots with a few higher gusts along the coast in the afternoon.

MARINE.

High pressure off the mid-Atlantic coast shifts eastward as southerly winds develop over local waters today. A cold front moves through on Tuesday bringing showers with embedded thunderstorms. Strong northerly winds develop behind the front on Wednesday causing Small Craft Advisory conditions across most of our local waters. Winds and waves gradually decrease into Friday as onshore flow develops.

Rip Currents: Low risk today & Tuesday.

PRELIMINARY POINT TEMPS/POPS.

AMG 75 60 76 40 55 / 0 30 100 50 0 SSI 72 61 74 46 56 / 0 0 60 70 10 JAX 77 61 80 46 58 / 0 10 50 70 10 SGJ 77 62 80 49 59 / 0 10 50 60 10 GNV 78 60 80 46 59 / 0 10 50 70 10 OCF 80 61 81 49 61 / 0 10 50 60 10

JAX WATCHES/WARNINGS/ADVISORIES. FL . None. GA . None. AM . None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CDRF1 - Cedar Key, FL 55 mi48 min SE 9.9 G 11 63°F 1020.6 hPa (-0.7)60°F
SAUF1 - St. Augustine, FL 56 mi48 min Calm G 1 64°F 65°F1021.7 hPa (-0.3)
GTXF1 - Guana Tolomato Matanzas Reserve, FL 57 mi63 min Calm 51°F 1023 hPa51°F

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gainesville, Gainesville Regional Airport, FL3 mi55 minN 08.00 miFair48°F46°F93%1022 hPa
Keystone Airpark, FL16 mi53 minESE 38.00 miPartly Cloudy50°F50°F100%1021.3 hPa

Link to 5 minute data for KGNV

Wind History from GNV (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmNE64SE4S4CalmSE6SE5SE4CalmCalmE3E4CalmCalmCalmCalmCalmCalm
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W12W10W10W13W7W10W7W3W4W6W5W4CalmCalmCalmCalmCalm
2 days agoNE4NW4CalmNW3NW4CalmCalmS5S4SW8SW6S4W4NW3CalmCalmCalmCalmSE3CalmS3SW8S7S7

Tide / Current Tables for Buffalo Bluff, St. Johns River, Florida (3)
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Buffalo Bluff
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Mon -- 01:40 AM EST     0.02 feet Low Tide
Mon -- 06:36 AM EST     0.91 feet High Tide
Mon -- 07:14 AM EST     Sunrise
Mon -- 11:06 AM EST     Moonset
Mon -- 01:39 PM EST     0.01 feet Low Tide
Mon -- 05:29 PM EST     Sunset
Mon -- 07:04 PM EST     1.07 feet High Tide
Mon -- 10:12 PM EST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.1000.20.50.70.90.90.80.70.50.30.1000.20.50.811.110.90.70.5

Tide / Current Tables for Buffalo Bluff, St. Johns River, Florida
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Buffalo Bluff
Click for Map
Mon -- 01:25 AM EST     2.80 feet Low Tide
Mon -- 06:52 AM EST     3.61 feet High Tide
Mon -- 07:14 AM EST     Sunrise
Mon -- 11:06 AM EST     Moonset
Mon -- 12:56 PM EST     2.78 feet Low Tide
Mon -- 05:29 PM EST     Sunset
Mon -- 07:30 PM EST     3.71 feet High Tide
Mon -- 10:12 PM EST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.82.82.82.93.23.53.63.63.63.43.12.92.82.82.82.93.13.43.63.73.73.63.43.1

Weather Map
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wmap_A
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (3,6,7,8)
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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 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.