Tuesday, March31, 2020
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Marine Weather and Tides
Fernandina 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 7:14AMSunset 7:46PM Tuesday March 31, 2020 4:27 PM EDT (20:27 UTC) Moonrise 10:59AMMoonset 12:32AM Illumination 53% Phase: First Quarter Moon; 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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AMZ450 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- 314 Pm Edt Tue Mar 31 2020
.small craft advisory in effect from 6 pm edt this evening through Wednesday morning...
Tonight..West southwest winds 20 to 25 knots, becoming west northwest. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 4 seconds. Inland waters choppy. Showers likely and a chance of Thunderstorms.
Wednesday..North northwest winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 5 seconds. Inland waters choppy.
Wednesday night..North winds 5 to 10 knots. Seas 2 to 4 feet. Dominant period 6 seconds. Inland waters a light chop.
Thursday..Northeast 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.
Thursday night..North northeast winds 5 to 10 knots. Seas 2 to 4 feet. Dominant period 12 seconds. Inland waters a light chop.
Friday..Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 11 seconds. Inland waters a light chop.
Friday night and Saturday..East winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet.
Saturday night and Sunday..East southeast winds 5 to 10 knots. Seas 5 to 7 feet with occasional seas up to 9 feet.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 314 Pm Edt Tue Mar 31 2020
Synopsis.. A cold front will move southeast across the area waters tonight, with strong storms possible. High pressure will build to the northwest Wednesday, then north Thursday through Friday night. The high will build more toward the northeast on Saturday, then east early next week.
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 Fernandina Beach, FL
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location: 30.67, -81.47     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 311929 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 329 PM EDT Tue Mar 31 2020

. POTENTIAL FOR SEVERE WEATHER AND ISOLATED TORNADOES THIS LATE AFTERNOON AND EVENING FROM SOUTHEAST GEORGIA . SUWANNEE VALLEY AND ALONG THE I-10 CORRIDOR TOWARD BAKER COUNTY .

NEAR TERM [Through Tonight].

Warm front now extends from central Georgia into the Carolinas with our region now clearly in the warm sector. The cold front now extends from central GA through the FL Panhandle into the north central GOM. The lower atmosphere has primed with dewpoints in mid to upper 60s. The strengthening surface low will move over central Georgia this afternoon will pivot this low east-northeastward, reaching the Mid-Atlantic coast by early Wednesday morning. Breezy conditions were slow to develop this afternoon due to the lingering stratus, but have since increased to from the southwest at 17-23 mph with frequent gusts to 35 mph through the late afternoon hours through sunset area-wide. These values are just below Wind Advisory criteria.

The Suwanee Valley and all of SE GA has been put in a tornado watch until 9 pm. Radar has some discrete cells moving into the I-75 corridor across Southwest GA and soon will be knocking on the door of interior SE GA this late afternoon.

A broken line of supercells will press further into SE GA and Suwannee Valley this early evening. There is currently a tongue of higher instabilty with CAPES 500-1000 J/kg over SW GA and the Suwannee Valley. This instability is expected to continue ahead of the front through mid evening where there will be good moisture pooling and transport. The broken line is expected to seep southward just north of I-10 by Baker county this mid evening. The storms are anticipated to weaken with the loss of daytime heating and weakening kinematics south of I-10 this mid evening. Some storms can be strong to marginally severe just south of I-10. The best threat for strong to severe weather will be north of I-10, particularly into SE GA, Damaging winds and hail will be the most likely severe modes. The biggest tornado threat remains north and west of U.S. Route 84 in Georgia. South and East of U.S. Route 84 shear is more unidirectional with minimal directional veering of winds with height as surface winds become a uniform southwesterly direction, where more straight line wind environment will hold sway.

The cold front is expected to pass through the entire region before midnight, where skies willl start to clear or partially clear from northwest to southeast during the overnight hours.

SHORT TERM [Wednesday Through Friday Night].

Low pressure will move to the northeast Wednesday, as high pressure builds from the west. The high will build to the northwest Wednesday night, then north on Thursday. This high will remain centered to the north through Friday night, with ridging extending south into forecast area. Noticeably cooler and drier air will advect into the region on northwest flow Wednesday, with skies clearing. Temperatures will trend below normal through Thursday night with skies remaining mostly clear. As the flow becomes more onshore Friday into Friday night, an increase cloud cover is expected along with temperatures beginning to rise. Readings Friday inland will rise above normal, where as the onshore flow will keep coastal areas a little below normal.

LONG TERM [Friday night Through Tuesday].

The high will move more to the northeast Saturday, as a wave of low pressure moves east across the gulf. High pressure will remain to the northeast Sunday, as moisture increases across the area, but better energy over the gulf stalls to the west. With increasing moisture, and energy to the west, rain chances increase from the southwest. The high will build more toward the east Monday then southeast Tuesday. With the high to the east, the flow will become more southerly with temperatures rising above normal for Monday. A weak frontal boundary is expected to lay west to east Monday into Tuesday, with precipitation chances increasing into Tuesday. A southwesterly flow will yield temperatures above normal into Tuesday as well.

MARINE.

A cold front will move southeast across the area waters Tonight, with strong storms possible. An enhanced gradient is expected ahead, along and behind this front, leading to small craft advisory conditions. High pressure will build to the northwest Wednesday, then north Thursday through Friday night. The high will build more toward the northeast on Saturday, then east early next week.

PRELIMINARY POINT TEMPS/POPS.

AMG 50 67 46 73 49 / 50 0 0 0 0 SSI 55 67 53 70 55 / 60 0 0 0 0 JAX 54 70 52 76 53 / 50 0 0 0 0 SGJ 57 69 55 73 56 / 40 0 0 0 0 GNV 53 71 49 79 51 / 40 0 0 0 0 OCF 54 73 49 80 52 / 40 0 0 0 0

JAX WATCHES/WARNINGS/ADVISORIES. FL . None. GA . None. AM . Small Craft Advisory from 6 PM this evening to 4 PM EDT Wednesday 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 from 6 PM this evening to 11 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-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 0 mi58 min SW 8.9 G 14 87°F 70°F1003.7 hPa
41112 - Offshore Fernandina Beach, FL (132) 10 mi58 min 72°F1 ft
BLIF1 19 mi64 min SW 15 G 24 83°F 1005.1 hPa69°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 19 mi58 min SW 16 G 20 81°F 67°F1004.5 hPa
DMSF1 20 mi58 min 77°F
LTJF1 20 mi64 min 83°F 65°F
NFDF1 20 mi58 min WSW 12 G 23 84°F
SAXG1 - Sapelo Island Reserve, GA 53 mi88 min SSE 8 76°F 1004 hPa (-5.0)69°F
SAUF1 - St. Augustine, FL 57 mi88 min SW 14 G 21 85°F 64°F1006.2 hPa (-4.5)

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fernandina Beach Municipal Airport, FL4 mi33 minSW 17 G 2210.00 miMostly Cloudy84°F66°F56%1003.4 hPa
Jacksonville International Airport, FL17 mi32 minWSW 18 G 2610.00 miMostly Cloudy and Breezy87°F64°F46%1003.5 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL19 mi36 minSW 15 G 2410.00 miMostly Cloudy86°F63°F46%1003.9 hPa
Jacksonville Craig Municipal Airport, FL24 mi35 minWSW 19 G 2710.00 miMostly Cloudy and Breezy86°F63°F46%1004.2 hPa

Link to 5 minute data for KFHB

Wind History from FHB (wind in knots)
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Last 24hrSE9SE7SE5SE4S5S4SW3CalmCalmSW8W8W5SW6SW4W7W8W9W7W8SW11SW14SW11
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1 day agoSE12S8S9S6S5S5SW4SW5SW4W4W7NW5W3SW4W4W4NW6N7NW3E7E9E10E8SE7
2 days agoSE14SE13SE12
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Tide / Current Tables for Fernandina Beach, Amelia River, Florida (8)
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Fernandina Beach
Click for Map
Tue -- 01:32 AM EDT     Moonset
Tue -- 01:53 AM EDT     7.39 feet High Tide
Tue -- 07:15 AM EDT     Sunrise
Tue -- 08:13 AM EDT     2.31 feet Low Tide
Tue -- 11:58 AM EDT     Moonrise
Tue -- 02:22 PM EDT     6.53 feet High Tide
Tue -- 07:44 PM EDT     Sunset
Tue -- 08:20 PM EDT     2.13 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.47.27.476.14.93.72.72.32.53.34.35.366.56.45.84.83.62.62.22.33.14.3

Tide / Current Tables for St. Johns River Entrance, Florida Current (3)
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St. Johns River Entrance
Click for Map
Tue -- 01:33 AM EDT     Moonset
Tue -- 01:41 AM EDT     2.12 knots Max Flood
Tue -- 04:45 AM EDT     -0.00 knots Slack
Tue -- 07:06 AM EDT     -1.64 knots Max Ebb
Tue -- 07:15 AM EDT     Sunrise
Tue -- 11:37 AM EDT     0.00 knots Slack
Tue -- 11:58 AM EDT     Moonrise
Tue -- 02:10 PM EDT     1.43 knots Max Flood
Tue -- 04:45 PM EDT     -0.00 knots Slack
Tue -- 07:17 PM EDT     -1.68 knots Max Ebb
Tue -- 07:44 PM EDT     Sunset
Tue -- 10:49 PM EDT     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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1.21.92.11.50.7-0.3-1.2-1.6-1.5-1-0.5-0.20.20.91.41.20.6-0.2-1.1-1.6-1.5-1-0.40.1

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (16,3,4,5)
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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.