Friday, April3, 2020
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Marine Weather and Tides
Green Cove Springs, 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 7:11AMSunset 7:48PM Friday April 3, 2020 1:05 PM EDT (17:05 UTC) Moonrise 2:00PMMoonset 3:14AM Illumination 81% Phase: Waxing Gibbous; Moon at 11 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:202004032200;;509549 Fzus52 Kjax 031407 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 1007 Am Edt Fri Apr 3 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. Amz450-452-454-032200- 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- 1007 Am Edt Fri Apr 3 2020
Rest of today..North northwest winds around 5 knots becoming east in the afternoon. Seas 2 to 3 feet. Dominant period 11 seconds. Inland waters smooth.
Tonight..South southeast winds 5 to 10 knots becoming west southwest after midnight. Seas 2 to 3 feet. Dominant period 10 seconds increasing to 15 seconds after midnight. Inland waters a light chop.
Saturday..West northwest winds 5 to 10 knots becoming east northeast in the afternoon. Seas 2 to 3 feet. Dominant period 15 seconds. Inland waters a light chop.
Saturday night..East winds 5 to 10 knots. Seas 2 to 4 feet. Dominant period 14 seconds. Inland waters a light chop.
Sunday..East winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 13 seconds. Inland waters a light chop. A slight chance of showers.
Sunday night and Monday..Southeast winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet.
Monday night..South winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet.
Tuesday..South winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. A slight chance of showers.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 1007 Am Edt Fri Apr 3 2020
Synopsis.. Surface high pressure will build over the local waters through tonight as low pressure drifts offshore of the new england atlantic coast. Long period swells from this distant low will impact the local waters this weekend as surface high pressure rebuilds northeast of the local waters. Combined seas over the outer waters will near small craft exercise caution to marginal small craft advisory conditions late Sunday through Tuesday. Monday the high will build east of the southeast atlantic coast. Southerly flow develops Tuesday in advance of an approaching frontal system.
Gulf stream.. The approximate location of the west wall of the gulf stream as of apr 02, 2020 at 1200 utc... 62 nautical miles east of flagler beach. 72 nautical miles east of saint augustine beach. 83 nautical miles east of jacksonville beach. 97 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Green Cove Springs, FL
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location: 29.99, -81.66     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 031417 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 1017 AM EDT Fri Apr 3 2020

NEAR TERM [Through Tonight].

Forecast remains on track for a dry day today. Deep layer ridging building over the area today with mid-upper level ridge axis over north-central GoMex across into the TN Valley and more broad surface ridging across the eastern CONUS centered to our north. A series of shortwaves will be rolling through the north side of the ridge today/tonight, leading to increasing upper level cloud cover. Temperatures will be warmer than yesterday as the airmass in place moderates under diurnal heating. Highs this afternoon will range from the mid 70s to low 80s today. Lows tonight will be in the low-mid 50s, upper 50s along the immediate coastline. With cloud coverage building, fog development is not expected overnight.

PREV DISCUSSION [718 AM EDT].

SHORT TERM [Saturday Through Sunday].

An upper level ridge over the region shifts eastward as a series of shortwaves propagate through the ridge. On Saturday, warm, dry conditions continue as cloud cover increases and highs range in the low to mid 80s. More potent shortwave energy moves through on Sunday causing scattered showers mainly over north central Florida. Due to overcast skies, temperatures cool slightly on Sunday with highs in the upper 70s to low 80s.

LONG TERM [Monday Through Thursday].

Surface high pressure off the Atlantic coast and upper ridging across the southern Gulf of Mexico prevail through mid-week. Tuesday through Thursday, rounds of showers and storms affect the region as a series of shortwaves propagate along the northern periphery of the ridge and move through the southeast US. The deterministic models differ with how much rain comes to the region with the ECMWF being the drier solution. West-southwesterly flow develops leading to a warming trend. Highs will warm into the upper 80s to around 90 and lows into the mid to upper 60s by mid- week.

AVIATION. [Through 12Z Saturday]

Shallow ground fog still possible near VQQ/CRG/JAX and GNV for the next hour. Otherwise, anticipate VFR conditions through the period with increasing upper level cloud coverage. Calm winds will become east to southeasterly at around 5-10 kts in the late morning/early afternoon hours and go calm again overnight.

MARINE.

Surface high pressure will build over the local waters through tonight as low pressure drifts offshore of the New England Atlantic coast. Long period swells from this distant low will impact the local waters this weekend as surface high pressure rebuilds northeast of the local waters. Combined seas over the outer waters will near Small Craft Exercise Caution to marginal Small Craft Advisory conditions late Sun through Tue. Monday the high will build east of the Southeast Atlantic coast. Southerly flow develops Tuesday in advance of an approaching frontal system.

Rip Currents: Moderate risk today with elevated risk (Moderate or High) this weekend as long period swells and persistent onshore flow impact local beaches.

FIRE WEATHER.

Dry conditions with near red flag conditions expected through Saturday night. Minimum afternoon RHs will reach critical to near critical across portions of inland locations and ERC values will be in the 30s. However, light winds will prevent inland locations from reaching red flag criteria. Light and variable winds prevail but coastal winds increase and shift to northeasterly in the afternoon with the seabreeze.

HYDROLOGY.

Rises along the Altamaha River over the next few days with Minor Flooding occurring at Baxley. Other locations along the basin are expected to remain below Flood Stage.

PRELIMINARY POINT TEMPS/POPS.

AMG 77 53 81 56 78 / 0 0 0 0 20 SSI 71 58 75 63 74 / 0 0 0 10 10 JAX 77 56 83 61 78 / 0 0 0 10 20 SGJ 74 56 80 63 76 / 0 0 0 10 20 GNV 80 53 86 58 79 / 0 0 0 10 20 OCF 82 54 86 59 80 / 0 0 0 0 20

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
SAUF1 - St. Augustine, FL 23 mi66 min ENE 5.1 G 7 67°F 68°F1017.4 hPa
DMSF1 28 mi48 min 70°F
NFDF1 28 mi48 min E 2.9 G 4.1 69°F
BLIF1 29 mi54 min E 2.9 G 2.9 73°F 1017.6 hPa48°F
LTJF1 29 mi54 min 69°F 36°F
41117 31 mi36 min 69°F3 ft
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 31 mi48 min ENE 6 G 8 67°F 68°F1017.2 hPa
GTXF1 - Guana Tolomato Matanzas Reserve, FL 32 mi81 min E 4.1 71°F 1019 hPa49°F
FRDF1 - 8720030 - Fernandina Beach, FL 48 mi48 min N 5.1 G 7 78°F 70°F1017 hPa

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Jacksonville Naval Air Station, FL17 mi73 minNNW 510.00 miA Few Clouds72°F46°F41%1016.9 hPa
Northeast Florida Regional Airport, FL18 mi70 minE 810.00 miFair70°F46°F44%1017.3 hPa
Cecil Airport, FL20 mi76 minVar 410.00 miFair77°F46°F34%1017.3 hPa
Keystone Airpark, FL23 mi71 minVar 3 G 103.00 miHaze72°F39°F31%1016.6 hPa

Link to 5 minute data for KNIP

Wind History from NIP (wind in knots)
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Last 24hrSE7S8SE84--E10----SE7S6S4CalmW5W4W3CalmW3W4W5W3W4CalmN5N3
1 day agoN7N12N9N105N9E8E6NE5NE7E6E3E3CalmW5W5W5W4NW7NW5N5NE5NE5E6
2 days agoSW19
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W10W9W10W11W8W10NW10NW16
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NW105N8

Tide / Current Tables for Green Cove Springs, St. Johns River, Florida
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Green Cove Springs
Click for Map
Fri -- 03:59 AM EDT     4.25 feet Low Tide
Fri -- 04:13 AM EDT     Moonset
Fri -- 07:12 AM EDT     Sunrise
Fri -- 10:04 AM EDT     5.03 feet High Tide
Fri -- 03:00 PM EDT     Moonrise
Fri -- 04:52 PM EDT     4.27 feet Low Tide
Fri -- 07:46 PM EDT     Sunset
Fri -- 10:26 PM EDT     4.89 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.64.44.34.34.24.34.54.84.95554.84.64.54.44.34.34.44.64.84.84.94.9

Tide / Current Tables for Black Creek, S.C.L. RR. bridge, Florida
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Black Creek
Click for Map
Fri -- 03:36 AM EDT     4.87 feet Low Tide
Fri -- 04:14 AM EDT     Moonset
Fri -- 07:13 AM EDT     Sunrise
Fri -- 09:13 AM EDT     5.68 feet High Tide
Fri -- 03:00 PM EDT     Moonrise
Fri -- 04:48 PM EDT     4.91 feet Low Tide
Fri -- 07:47 PM EDT     Sunset
Fri -- 09:15 PM EDT     5.54 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.14.94.94.94.94.95.15.45.65.75.75.65.45.2554.94.955.35.55.55.55.5

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (13,3,4,5)
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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.