Wednesday, April1, 2020
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Marine Weather and Tides
Callahan, 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 3:10 AM EDT (07:10 UTC) Moonrise 11:54AMMoonset 1:30AM Illumination 58% 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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AMZ452 Expires:202004010815;;379449 Fzus52 Kjax 010007 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 807 Pm Edt Tue Mar 31 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. Amz450-452-454-010815- 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- 807 Pm Edt Tue Mar 31 2020
.small craft advisory in effect through Wednesday morning...
Tonight..West northwest winds 20 to 25 knots. A few gusts around gale force. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 4 seconds. Inland waters choppy. Showers and a slight 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- 807 Pm Edt Tue Mar 31 2020
Synopsis.. A cold front will move southeast of the area tonight. 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 Callahan, FL
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location: 30.56, -81.74     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 010519 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 119 AM EDT Wed Apr 1 2020

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.

PREV DISCUSSION [736 PM EDT].

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 will 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 67 46 73 49 78 / 0 0 0 0 0 SSI 67 53 70 55 73 / 0 0 0 0 0 JAX 70 52 76 53 80 / 0 0 0 0 0 SGJ 69 55 73 56 76 / 0 0 0 0 0 GNV 71 49 79 51 82 / 0 0 0 0 0 OCF 73 49 80 52 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
NFDF1 13 mi53 min WNW 2.9 G 7 61°F
DMSF1 15 mi53 min 76°F
BLIF1 16 mi65 min WNW 9.9 G 15 64°F 1006.2 hPa64°F
FRDF1 - 8720030 - Fernandina Beach, FL 17 mi53 min WNW 12 G 23
LTJF1 20 mi65 min 65°F 58°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 20 mi53 min WNW 14 G 19 64°F 64°F1005.5 hPa
41112 - Offshore Fernandina Beach, FL (132) 26 mi41 min 69°F3 ft
SAUF1 - St. Augustine, FL 55 mi71 min WNW 7 G 9.9 65°F 64°F1005.6 hPa (+0.0)
SAXG1 - Sapelo Island Reserve, GA 64 mi71 min NW 19 62°F 1005 hPa (+1.0)53°F

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Jacksonville International Airport, FL5 mi15 minWNW 1110.00 miA Few Clouds60°F52°F75%1006.1 hPa
Fernandina Beach Municipal Airport, FL15 mi16 minNW 1410.00 miFair61°F55°F85%1005.8 hPa
Jacksonville Craig Municipal Airport, FL20 mi18 minWNW 13 G 2210.00 miFair62°F53°F73%1005.9 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL20 mi19 minNW 13 G 2510.00 miFair62°F55°F78%1005.5 hPa
Jacksonville Naval Air Station, FL23 mi18 minNW 1010.00 miA Few Clouds64°F51°F63%1005.9 hPa

Link to 5 minute data for KJAX

Wind History from JAX (wind in knots)
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W8--W10W9W8W8W8NW10NW11
1 day agoCalmW4W3CalmCalmW43CalmCalmW5SW5NW5E86SE6E5NE4E4S4S4CalmS3SW5W5
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Tide / Current Tables for Boggy Creek, 2 mi. above entrance, Florida
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Boggy Creek
Click for Map
Wed -- 12:12 AM EDT     0.56 feet Low Tide
Wed -- 02:29 AM EDT     Moonset
Wed -- 06:21 AM EDT     2.99 feet High Tide
Wed -- 06:21 AM EDT     First Quarter
Wed -- 07:15 AM EDT     Sunrise
Wed -- 12:54 PM EDT     Moonrise
Wed -- 01:09 PM EDT     0.79 feet Low Tide
Wed -- 06:52 PM EDT     2.57 feet High Tide
Wed -- 07:46 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.71.11.72.32.732.92.72.31.81.30.90.80.91.31.72.22.52.62.42.11.61.1

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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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 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.