Wednesday, April1, 2020
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Marine Weather and Tides
Yulee, 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 7:12AMSunset 7:46PM Wednesday April 1, 2020 6:18 AM EDT (10:18 UTC) Moonrise 11:53AMMoonset 1:29AM Illumination 59% Phase: Waxing Gibbous; Moon at 8 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:202004011530;;392585 Fzus52 Kjax 010718 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 318 Am Edt Wed Apr 1 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. Amz450-452-454-011530- 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- 318 Am Edt Wed Apr 1 2020
.small craft advisory in effect until 11 am edt this morning...
Today..North northwest winds 20 knots, becoming north 15 to 20 knots this afternoon. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 5 seconds. Inland waters choppy.
Tonight..North winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 6 seconds. Inland waters a light chop.
Thursday..North northeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 12 seconds. Inland waters a light chop.
Thursday night..Northeast winds 10 to 15 knots, becoming north 5 to 10 knots after midnight. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. Inland waters becoming mostly smooth.
Friday..North winds 5 to 10 knots, becoming east northeast 10 knots in the afternoon. Seas 2 to 4 feet. Dominant period 11 seconds. Inland waters becoming a light chop.
Friday night..South southeast winds 5 to 10 knots, becoming west northwest after midnight. Seas 2 to 3 feet.
Saturday..Northeast winds 5 to 10 knots, becoming east 10 knots in the afternoon. Seas 2 to 4 feet.
Saturday night and Sunday..East southeast winds 5 to 10 knots. Seas 4 to 6 feet with occasional seas up to 8 feet.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 318 Am Edt Wed Apr 1 2020
Synopsis.. Strengthening low pressure moving off the southeast u.s. Coast will decelerate off the new england coast on Thursday and will then meander off the mid-atlantic coast through Friday night. Strong northwesterly winds in the wake of this storm system will continue this morning. Meanwhile, high pressure will gradually weaken as it builds over the southeastern states Thursday and Friday. Low pressure over the western atlantic will then weaken and move east of bermuda this weekend as high pressure slowly strengthens along the southeastern seaboard. Large swells and rough surf from the meandering ocean storm system will impact our waters this weekend and early next week. Atlantic ridging will then shift south of the northeast florida waters by late Monday, resulting in prevailing offshore winds by Tuesday.
Gulf stream.. The approximate location of the west wall of the gulf stream as of mar 31, 2020 at 1200 utc... 64 nautical miles east of flagler beach. 80 nautical miles east southeast of saint augustine beach. 95 nautical miles east of jacksonville beach. 103 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Yulee, FL
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location: 30.6, -81.52     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 010823 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 423 AM EDT Wed Apr 1 2020

. DRY WITH SEASONABLY COOL NIGHTS FOR THE REST OF THE WEEK . . ROUGH SURF AND A HIGH RISK OF RIP CURRENTS AT AREA BEACHES THIS WEEKEND .

CURRENTLY. Early morning surface analysis depicts strengthening low pressure (996 millibars) near North Carolina's Outer Banks accelerating northeastward, with a trailing strong cold front moving southward through the Florida peninsula. Meanwhile, weak high pressure (1017 millibars) was building into the lower Mississippi Valley from eastern Texas Aloft. a potent shortwave trough pivoting through the Mid-Atlantic states was being absorbed into a larger cutoff trough positioned over eastern Canada and New England. Following the passage of a squall line that produced at least two tornadoes in the Suwannee Valley and coastal northeast Florida on Tuesday afternoon and early evening, cold air advection is finally taking hold of our weather pattern on the heels of gusty northwesterly winds. Wrap-around moisture from ongoing bombogenesis off the Carolina coast in the form of stratocumulus cloud decks are dissolving as the low and mid levels quickly dry out, with cloudiness now mostly relegated to the Savannah River Valley. Temperatures at 08Z range from near 50 along the Altamaha/Ocmulgee Rivers to near 60 in north central and coastal northeast Florida. Dewpoints have been rapidly falling overnight and ranged from the upper 30s in our northern counties to the lower 50s at the coast and in our southern counties.

NEAR TERM [Through Thursday].

A blocked weather pattern is becoming established over the western Atlantic waters that will trap the strengthening storm system off the New England and Mid-Atlantic coasts for the rest of this week. This will keep a dry west-northwesterly flow pattern aloft in place over our region as weak surface ridging gradually builds into the southeastern states. Breezy northwesterly winds this morning will shift to northerly with gradually diminishing speeds at inland locations this afternoon, while breezy conditions prevail at the coast through sunset. Full sunshine will offset cold air advection today, with highs mostly reaching the 70-75 degree range. These values are about 3-6 degrees below early April climatology.

Some very thin cirrus may begin to invade our skies toward sunrise on Thursday, with fair skies otherwise prevailing and winds decoupling early this evening inland. Lows will fall to the low to mid 40s inland, while northerly winds of 5-10 mph overnight will keep coastal lows mostly in the lower 50s.

Heights aloft will rise slightly on Thursday and a loose local pressure gradient will prevail, which will allow for prevailing northeasterly winds at coastal locations. A 110-knot jet streak migrating through the southeastern states may spread some slightly thicker cirrus over our region, but filtered sunshine, light winds and a very dry air mass will allow highs to reach the mid to upper 70s at most inland locations, while coastal highs stay in the upper 60s to near 70 due to onshore winds.

SHORT TERM [Thursday Night Through Saturday Night].

Zonal west-northwesterly flow will prevail, and surface ridging will begin to strengthen early this weekend along the Carolina coast. Cirrus will continue to occasionally move through our skies, but a dry air mass and slowly rising heights should allow for a gradual warm-up, with seasonably cool overnight lows persisting as winds continue to decouple early each evening. A weak shortwave trough migrating across the northern Gulf of Mexico may begin to spread some thicker cloud cover into our region by late Saturday night. Lows Thursday night will again fall into the 40s inland and near 50 at the coast. Highs Friday will approach 80 inland, with light onshore winds keeping coastal highs in the low to mid 70s. Temperatures will continue to slowly moderate into the weekend, with highs on Saturday reaching the low to mid 80s inland, while 70s prevail at the coast as light onshore flow prevails. Increasing cloud cover should keep lows in the mid to upper 50s inland on Saturday night.

LONG TERM [Sunday Through Wednesday].

The blocked weather pattern over the western Atlantic will break down late this weekend as a large trough impacts the U.S. west coast, which should promote a gradually strengthening ridge over the Gulf of Mexico that will build over the Florida peninsula early next week. A weak shortwave trough could promote just enough isentropic lift for a few showers over inland portions of northeast and north central Florida on Sunday, but long-term models are trending drier and blended POPs are now only isolated on Sunday. A few showers may be possible by Monday night or Tuesday in southeast Georgia on the northern periphery of the building ridge to our south as weak shortwave energy migrates through the southeastern states. Weak shortwave energy may also move out of the Gulf of Mexico by Tuesday or Wednesday, which could develop isolated to widely scattered diurnal convection over our area. Temperatures will slowly warm through the 80s each day, with highs possibly approaching 90 degrees at inland locations towards midweek. Lows will also warm into the 60s through midweek.

AVIATION. [Through 06Z Thursday]

Mainly VFR conds expected behind the frontal passage as band of BKN 3500ft strato-cu clouds pushes through the TAF sites over the next 3-5 hours with TEMPO gusts to 15G25 knots from the NW at times. Otherwise becoming SKC by this afternoon with light north winds developing after sunset.

MARINE.

Strengthening low pressure moving off the southeast U.S. coast will decelerate off the New England coast on Thursday and will then meander off the Mid-Atlantic coast through Friday night. Strong northwesterly winds in the wake of this storm system will continue this morning, with Small Craft Advisory conditions continuing offshore through mid-afternoon, while wind speeds fall back to Caution levels near shore this afternoon. High pressure will gradually weaken as it builds over the southeastern states Thursday and Friday. Caution level seas will continue offshore on Thursday and Friday. Low pressure over the western Atlantic will then weaken and move east of Bermuda this weekend as high pressure slowly strengthens along the southeastern seaboard. Large swells and rough surf from the meandering ocean storm system will impact our waters this weekend and early next week. Small Craft Advisory level seas should develop offshore by Saturday evening, with Caution level seas developing near shore. Atlantic ridging will then shift south of the northeast Florida waters by late Monday, resulting in prevailing offshore winds by Tuesday.

FIRE WEATHER.

Breezy north-northwesterly surface and transport winds will continue to usher in a cooler and drier air mass over our region today. Sustained surface winds around 15 mph will slowly diminish inland this afternoon, with breezy conditions continuing through late afternoon at coastal locations, where surface winds will shift to northerly. Minimum relative humidity values will approach critical thresholds for inland portions of northeast and north central Florida this afternoon, but wind speeds will fall below 15 mph this afternoon at these locations, and Red Flag Conditions are not anticipated. Minimum relative humidity values will again approach critical thresholds at most inland locations on Thursday afternoon and will then fall below critical thresholds at most inland locations on Friday afternoon.

HYDROLOGY.

Minor flooding is expected to resume along the Altamaha River near the Baxley gauge by Thursday as runoff from rainfall well upstream continues to be routed downstream. Other locations along the Altamaha will likely remain at Action levels.

PRELIMINARY POINT TEMPS/POPS.

AMG 69 43 73 46 79 / 0 0 0 0 0 SSI 69 53 68 50 73 / 0 0 0 0 0 JAX 72 45 75 47 78 / 0 0 0 0 0 SGJ 71 54 69 51 74 / 0 0 0 0 0 GNV 74 42 78 48 81 / 0 0 0 0 0 OCF 75 45 79 49 82 / 0 0 0 0 0

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.

Small Craft Advisory until 11 AM EDT this morning 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
FRDF1 - 8720030 - Fernandina Beach, FL 6 mi49 min NNW 7 G 11 63°F 70°F1007.5 hPa
41112 - Offshore Fernandina Beach, FL (132) 14 mi49 min 67°F4 ft
BLIF1 14 mi55 min WNW 8.9 G 15 58°F 1008.1 hPa50°F
DMSF1 15 mi49 min 74°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 15 mi49 min NW 11 G 14 58°F 65°F1007.6 hPa
NFDF1 15 mi49 min NNW 1.9 G 7 56°F
LTJF1 16 mi55 min 59°F 50°F
41117 48 mi49 min 70°F5 ft
SAUF1 - St. Augustine, FL 53 mi79 min NW 9.9 G 14 60°F 63°F1006.9 hPa (+1.3)
SAXG1 - Sapelo Island Reserve, GA 58 mi79 min NW 14 56°F 1007 hPa (+2.0)48°F

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fernandina Beach Municipal Airport, FL3 mi24 minNNW 13 G 1610.00 miMostly Cloudy57°F49°F77%1007.8 hPa
Jacksonville International Airport, FL12 mi23 minNW 1010.00 miA Few Clouds56°F45°F67%1008.1 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL15 mi27 minNW 1110.00 miMostly Cloudy57°F48°F74%1007.5 hPa
Jacksonville Craig Municipal Airport, FL19 mi26 minNW 18 G 2710.00 miFair and Breezy57°F46°F67%1007.8 hPa

Link to 5 minute data for KFHB

Wind History from FHB (wind in knots)
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1 day agoSW4W4W4NW6N7NW3E7E9E10E8SE7SE9SE7SE5SE4S5S4SW3CalmCalmSW8W8W5SW6
2 days agoS5SW3W5SW8W11W9W10W11W7SE12SE11SE12S8S9S6S5S5SW4SW5SW4W4W7NW5W3

Tide / Current Tables for Nassauville, Florida
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Nassauville
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Wed -- 02:29 AM EDT     Moonset
Wed -- 03:16 AM EDT     4.72 feet High Tide
Wed -- 06:21 AM EDT     First Quarter
Wed -- 07:14 AM EDT     Sunrise
Wed -- 10:26 AM EDT     0.87 feet Low Tide
Wed -- 12:53 PM EDT     Moonrise
Wed -- 03:47 PM EDT     4.06 feet High Tide
Wed -- 07:45 PM EDT     Sunset
Wed -- 10:34 PM EDT     0.57 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.43.54.34.74.64.23.52.71.81.20.911.62.53.33.94.13.83.32.51.710.60.6

Tide / Current Tables for St. Johns River Entrance, Florida Current (3)
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St. Johns River Entrance
Click for Map
Wed -- 02:29 AM EDT     Moonset
Wed -- 02:36 AM EDT     2.10 knots Max Flood
Wed -- 05:44 AM EDT     -0.00 knots Slack
Wed -- 06:21 AM EDT     First Quarter
Wed -- 07:14 AM EDT     Sunrise
Wed -- 08:03 AM EDT     -1.57 knots Max Ebb
Wed -- 12:42 PM EDT     0.00 knots Slack
Wed -- 12:52 PM EDT     Moonrise
Wed -- 03:06 PM EDT     1.46 knots Max Flood
Wed -- 05:47 PM EDT     -0.00 knots Slack
Wed -- 07:45 PM EDT     Sunset
Wed -- 08:16 PM EDT     -1.64 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.51.21.921.50.7-0.3-1.2-1.6-1.4-1-0.6-0.30.211.51.20.6-0.2-1.1-1.6-1.5-1.1-0.5

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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Wind Forecast for Jacksonville, FL (6,6,7,8)
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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 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.