Thursday, January23, 2020
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Marine Weather and Tides
Jacksonville Beach, 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 7:19AMSunset 5:55PM Thursday January 23, 2020 3:37 PM EST (20:37 UTC) Moonrise 6:26AMMoonset 4:52PM Illumination 2% Phase: Waning Crescent; Moon at 28 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 Expires:202001240300;;403452 Fzus52 Kjax 231921 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 221 Pm Est Thu Jan 23 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. Amz450-452-454-240300- 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- 221 Pm Est Thu Jan 23 2020
.small craft advisory in effect through late tonight...
Tonight..Southeast winds 10 to 15 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 10 seconds. Inland waters a light chop. A slight chance of showers.
Friday..South southeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. Inland waters a light chop. A chance of showers and a slight chance of Thunderstorms.
Friday night..South southwest winds 10 to 15 knots becoming west northwest after midnight. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. Inland waters a moderate chop. A chance of showers.
Saturday..West northwest winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. Inland waters a light chop.
Saturday night..Northwest winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 12 seconds. Inland waters a moderate chop.
Sunday..Northwest winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 12 seconds. Inland waters a light chop.
Sunday night..Northwest winds 5 to 10 knots. Seas 2 to 4 feet. A chance of showers.
Monday..North northwest winds 10 to 15 knots. Seas 2 to 4 feet. A chance of showers.
Monday night..North northwest winds 5 to 10 knots. Seas 2 to 4 feet.
Tuesday..North northeast winds 5 to 10 knots. Seas 2 to 3 feet.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 221 Pm Est Thu Jan 23 2020
Synopsis.. A weak ridge of high pressure will continue to shift northeastward tonight as a cold front approaches our coastal waters. This will result in a slackening pressure gradient and lighter winds from the southeast, though seas will take longer to lower, particularly further offshore. Showers and isolated Thunderstorms will be possible over our coastal waters tonight through Friday night ahead of and associated with the approaching front, but by Saturday expect dry conditions to prevail. Winds will be from the northwest at around 10 to 15 knots this weekend, lowering to 5 to 10 knots early next week.
Gulf stream.. The approximate location of the west wall of the gulf stream as of jan 23, 2020 at 1200 utc... 63 nautical miles east of flagler beach. 73 nautical miles east of saint augustine beach. 81 nautical miles east northeast of jacksonville beach. 80 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Jacksonville Beach, FL
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location: 30.29, -81.36     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 231754 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 1254 PM EST Thu Jan 23 2020

AVIATION. [Through 18Z Friday]

Areas of IFR cigs continue around JAX metro area and into parts of southeast GA. Models were too quick to erode these cigs today and have maintained IFR for at least a few more hours given the weight of the model consensus. VFR probably will prevail at GNV with chance of MVFR cigs this aftn. Shower activity remains fairly isolated but may see SSI affected by showers later this aftn as sfc trough pushes northwest. A mixture of low clouds tonight with a low chance of IFR cigs possible after midnight. However, will need close monitoring as initial state of low level clouds/moisturenot well represented by model guidance at this time. North to northeast flow will slowly come around to the northeast then east while decreasing, as a warm front lifts north through the area. Winds become south-southeast Friday ahead of an approaching cold front.

PREV DISCUSSION [823 AM EST].

NEAR TERM [Through Tonight].

High pressure ridge extending southward from the Carolinas will slowly weaken its grip over NE FL/SE GA as a coastal trough over the Atlantic Waters today will lift northward tonight as a quasi warm-frontal boundary tonight ahead of the next frontal system approaching from the West. The onshore flow from the Atlc is weaker today (10-20mph) but still enough to bring scattered coastal showers for the Atlc coastal counties that will push inland to around the 1-95/US 301 corridors before dissipating. Max Temps will continue to slowly moderate into the upper 50s/near 60 degrees across SE GA and into the 60s across NE FL and much closer to climo values for late January. As the trof/warm front lifts northward tonight, expect some fog (locally dense) to develop over inland areas, especially across SE GA, and later tonight some rainfall is expected to break out near the frontal boundary across inland SE GA as shortwave energy starts to pull NE out of the North Gulf Coast region. Milder trend in overnight lows continues with most areas only falling into the 50s.

SHORT TERM [Friday Through Saturday Night].

Friday . Models in good agreement with relatively weak frontal boundary pushing from West to east across the area with numerous showers across SE GA and isolated to scattered showers for NE FL. Just enough energy aloft with this front for isolated storms but severe weather is not expected. Rainfall amounts still appear light at 0.25" or less, with highest amounts across SE GA. Max temps will push to above normal for all areas, generally in the lower to middle 70s as south to southwest winds at 10-15 mph develop with a few gusts to 20-25 mph at times.

Friday Night . A few evening showers then clearing skies overnight as winds become west-northwest behind the frontal passage. Airmass behind this front not as cold and expect seasonable overnight lows in the 40s by early Sat Morning.

Saturday . Seasonable temps continue under sunny skies as High Pressure builds in from the west with Highs in the lower to middle 60s for most areas.

Saturday Night . High pressure settles just west of the region and light W-NW flow and mostly clear skies will allow for Min Temps in the middle to upper 30s inland and some patchy/areas of frost will be possible, lows closer to 40 degrees along the coast.

LONG TERM [Sunday Through Wednesday].

Sunday . High pressure remains over the region and seasonable highs in the 60s will continue, while high clouds will increase in the afternoon ahead of the next low pressure system.

Sunday Night/Monday . Long range models in decent agreement for next low pressure to develop in the Gulf and track eastward driven by the zonal flow aloft and for now expect this system to track south of the forecast area across the FL Peninsula and scattered rainfall chances remain in the forecast for now with seasonable temps continuing with lows in the 40s and highs in the lower 60s.

Tuesday . Expecting mainly dry conditions with seasonable temps to continue under Mostly Sunny skies behind the departing low pressure system.

Wednesday . Long range models diverge at this point as to how much moisture and energy pushes in from the West in the fast moving zonal flow aloft, but another disturbance with isolated to scattered showers is possible.

MARINE.

Small Craft Advisory headlines will continue today as NE flow remains elevated at 15-20 knots and seas still high in the 6-9 ft range nearshore and 8-11 ft offshore. Coastal trof lifts north of the waters tonight and winds become southerly on Friday at 10-15 knots and seas will subside to 4-6 ft (SCEC headlines) for the nearshore waters but remain elevated over the offshore waters at 6-9 ft. Following the next cold frontal passage Friday Night winds become offshore around 15 knots through the weekend and seas will continue to slowly subside but SCA headlines likely to remain for the offshore waters through at least Saturday for seas up to 7 feet at times.

Rip Currents/High Surf/Coastal Flood:

With winds shifting to northeasterly, surf will remain elevated along the NE FL coast to 6-9 feet with a high risk of rip currents that will continue through tonight. The approach of the New Moon and onshore flow will also produce elevated water levels during times of high tide with values peaking around 1.5 feet above MHHW ("ground level"), likely just below minor coastal flooding levels and will continue the Coastal Flood Statement through tonight for coastal northeast Florida.

FIRE WEATHER.

Higher humidities and lighter NE winds will expected today and low daytime dispersion values around 20 units are possible this afternoon.

HYDROLOGY.

Minor flooding continues on the Altamaha River Basin near Baxley and Charlotteville, and may expand downstream to Doctortown by this weekend.

PRELIMINARY POINT TEMPS/POPS.

AMG 51 70 41 59 36 / 60 60 20 0 0 SSI 56 68 46 60 41 / 20 40 30 0 0 JAX 55 75 46 64 40 / 20 30 10 0 0 SGJ 58 74 49 65 43 / 20 30 10 0 0 GNV 55 75 45 65 38 / 10 20 0 0 0 OCF 55 75 46 67 39 / 10 10 0 0 0

JAX WATCHES/WARNINGS/ADVISORIES. FL . High Rip Current Risk through late tonight for Coastal Duval- Coastal Flagler-Coastal Nassau-Coastal St. Johns.

High Surf Advisory until 4 AM EST Friday for Coastal Duval- Coastal Flagler-Coastal Nassau-Coastal St. Johns.

GA . None. AM . Small Craft Advisory until 4 PM EST Saturday 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.

Small Craft Advisory until 11 PM EST this evening 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-Coastal waters from St. Augustine to Flagler Beach FL out 20 NM.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LTJF1 8 mi56 min 55°F 53°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 8 mi50 min 56°F1019.9 hPa
BLIF1 11 mi56 min 57°F 1020.5 hPa57°F
DMSF1 12 mi50 min 56°F
NFDF1 16 mi50 min 56°F
41117 25 mi38 min 60°F8 ft
FRDF1 - 8720030 - Fernandina Beach, FL 27 mi50 min 54°F1020.4 hPa
41112 - Offshore Fernandina Beach, FL (132) 29 mi38 min 57°F7 ft
SAUF1 - St. Augustine, FL 30 mi38 min N 15 G 17 57°F 58°F1018.7 hPa (-2.3)
GTXF1 - Guana Tolomato Matanzas Reserve, FL 44 mi53 min NNW 6 61°F 1020 hPa57°F

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mayport Naval Station - Adm David L. McDonald Field, FL8 mi46 minN 147.00 miOvercast56°F52°F87%1019.7 hPa
Jacksonville Craig Municipal Airport, FL9 mi1.7 hrsNNE 10 G 197.00 miOvercast56°F53°F90%1020.1 hPa
Jacksonville Naval Air Station, FL17 mi45 minNNE 1110.00 miOvercast60°F52°F75%1019.3 hPa
Jacksonville International Airport, FL22 mi1.7 hrsNE 1510.00 miOvercast59°F53°F82%1020.3 hPa
Northeast Florida Regional Airport, FL22 mi42 minN 113.00 miFog/Mist59°F57°F93%1019.1 hPa
Fernandina Beach Municipal Airport, FL23 mi63 minNNE 12 G 1810.00 miOvercast55°F53°F92%1020 hPa

Link to 5 minute data for KNRB

Wind History from NRB (wind in knots)
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Tide / Current Tables for Jacksonville Beach, Florida
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Jacksonville Beach
Click for Map
Thu -- 12:29 AM EST     -0.00 feet Low Tide
Thu -- 06:26 AM EST     Moonrise
Thu -- 06:59 AM EST     5.93 feet High Tide
Thu -- 07:20 AM EST     Sunrise
Thu -- 01:18 PM EST     0.20 feet Low Tide
Thu -- 04:52 PM EST     Moonset
Thu -- 05:54 PM EST     Sunset
Thu -- 07:04 PM EST     5.03 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.10.92.13.44.75.65.95.64.73.52.10.80.20.41.32.53.74.754.842.91.7

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
Click for Map
Thu -- 02:59 AM EST     0.00 knots Slack
Thu -- 06:04 AM EST     2.52 knots Max Flood
Thu -- 06:26 AM EST     Moonrise
Thu -- 07:20 AM EST     Sunrise
Thu -- 09:14 AM EST     -0.00 knots Slack
Thu -- 12:52 PM EST     -2.17 knots Max Ebb
Thu -- 04:03 PM EST     0.00 knots Slack
Thu -- 04:52 PM EST     Moonset
Thu -- 05:53 PM EST     Sunset
Thu -- 06:41 PM EST     1.68 knots Max Flood
Thu -- 09:17 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-2.1-1.8-1.101.32.22.52.31.70.4-1-1.8-2.1-2.2-1.9-1.2-0.111.61.71.30.4-0.9-1.8

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (15,3,4,5)
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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 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.