Monday, January20, 2020
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Marine Weather and Tides
Sawgrass, 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 7:20AMSunset 5:52PM Monday January 20, 2020 12:00 PM EST (17:00 UTC) Moonrise 3:31AMMoonset 2:19PM Illumination 21% Phase: Waning Crescent; Moon at 25 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:202001202100;;240217 Fzus52 Kjax 201259 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 759 Am Est Mon Jan 20 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. Amz450-452-454-202100- 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- 759 Am Est Mon Jan 20 2020
.small craft advisory in effect through Tuesday afternoon...
Rest of today..North winds 20 to 25 knots with a few gale force gusts to around 35 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 6 seconds. Inland waters choppy.
Tonight..North winds 20 to 25 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Inland waters choppy.
Tuesday..North winds 20 to 25 knots with a few gale force gusts to around 35 knots. Seas 6 to 8 feet with occasional seas up to 10 feet. Dominant period 6 seconds. Inland waters rough.
Tuesday night..North winds 25 to 30 knots. Seas 6 to 9 feet with occasional seas up to 11 feet. Dominant period 7 seconds. Inland waters very rough.
Wednesday..North winds 25 to 30 knots. Seas 7 to 10 feet with occasional seas up to 13 feet. Dominant period 9 seconds. Inland waters rough. A slight chance of showers.
Wednesday night..North northeast winds 20 to 25 knots. Seas 6 to 9 feet with occasional seas up to 11 feet. A chance of showers.
Thursday..Northeast winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. A chance of showers.
Thursday night..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. A chance of showers.
Friday..Southeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. A chance of showers.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 759 Am Est Mon Jan 20 2020
Synopsis.. Strong high pressure to the northwest of the area waters will move east today on Tuesday the high will build closer towards the region. On Wednesday high pressure will be north of the area waters near the mid atlantic coast while a low pressure system starts to form over the bahamas.
Gulf stream.. The approximate location of the west wall of the gulf stream as of jan 20, 2020 at 1200 utc... 63 nautical miles east of flagler beach. 68 nautical miles east of saint augustine beach. 76 nautical miles east of jacksonville beach. 89 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Sawgrass, FL
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location: 30.19, -81.36     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 201306 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 806 AM EST Mon Jan 20 2020

UPDATE.

Much cooler temperatures were observed across the area behind a strong cold. Lows this morning were in the low to mid 30s across the interior and around 40 at the beaches, and with the north to northwest winds 5-10 mph, wind chills were in the mid 20s to lower 30s across much of the area. Mainly clear skies were seen across the area, with a few high clouds streaming towards southeast Georgia from the west. Stratocu clouds were diving southwestward over the western Atlantic, and these clouds are forecast to impact the coastal areas today before clearing out tonight. Highs today will in the upper 40s to lower 50s across southeast Georgia, the mid to upper 50s across northeast Florida, and around 60 across north central Florida. Breezy northerly winds are expected at the beaches, with winds around 15 mph with gusts around 25 mph.

PREV DISCUSSION [536 AM EST].

NEAR TERM [Through Tonight].

Strong high pressure is building into the region from the northern plains early this morning and bringing with it colder and drier air into our area. Temperatures have been dropping overnight across the area with inland SE GA currently in the mid to upper 30s while NE FL areas were in the low to mid 40s. Northwest winds around 10-15 mph coupled with the colder temperatures are helping to make temperatures across the region feel more like in the 30s for much of the area. Low Temperatures this morning will bottom out in the low to mid 30s over SE GA and the Suwannee valley of NE FL while dropping into the upper 30s to lower 40s closer to the coast this morning.

The strong high pressure center will continue to build slowly southeast towards the upper Mississippi Valley this afternoon. A deep mid/upper level trough over the eastern third of the U.S. is helping to bring in a cold dry air mass farther south into the southeastern states, the Gulf Coast, and into the Florida Peninsula. This pattern will keep northerly winds and colder than average temperatures through the afternoon with Monday's highs only topping out in the low to mid 50s. Winds will be around 10-20 mph along the coast and lighter inland around 5-10 mph.

Tonight, mostly clear skies and light northerly winds will continue with the area influenced by cold high pressure. A Freeze Watch is in place late this evening through Tuesday morning for temperatures expected to fall into the upper 20s over much of SE GA and the low 30s over areas of NE FL along and west of Highway 301 with mid 30s along the immediate SE GA and NE FL coasts.

SHORT TERM [Tuesday Through Wednesday].

Tuesday . Models continue to show stronger mid-level trof to swing through the SE U.S. and into the Wrn Atlc which will reinforce the polar airmass in place with strong cold air advection from the North which will hold Max Temps well below normal in the mid/upper 40s SE GA and upper 40s/lower 50s for NE FL. Breezy North winds at the surface will increase to 15 to 20 mph inland and 20 to 25 mph along the coast with gusts to 30 mph at times. This will drive wind chills down into the 20s in the morning hours and a Wind Chill Advisory may need to be posted.

Tuesday Night . Another cold night with expected inland advective freeze event with widespread lows in the upper 20s inland and 30s closer to the coast. Wind chills will continue to be an issue as winds remain elevated at North 5-10 mph inland and North 10-20 mph along the Atlc Coast and wind chills in the 20s expected area- wide and an advisory may be required again.

Wednesday . As surface high pushes into the Carolinas expect surface winds to become North to Northeast and this will push temps slightly higher into the lower to middle 50s but still well below normal and winds still elevated at 10-15 mph inland and 15 to 25 mph at the Atlc Coast. The onshore flow will bring clouds inland off the Atlc and possibly a few showers along the NE FL coast south of St Augustine at times.

Wednesday Night . Surface flow becomes Northeast and the flow off the Atlc will bring in more clouds and modify the airmass with no significant freeze expected as temps bottom out in the 30s over inland areas and in the 40s along the coast and St Johns River Basin. A few showers will continue to be possible along the NE FL coast from JAX southward pushing into the St Johns River Basin at times.

LONG TERM [Thursday Through Monday].

Thursday . High pressure settles into the Carolinas and breezy onshore flow develops which will moderate temps slightly with highs closer to climo values in the 60s, but increase in clouds and moisture will support showers over the coastal waters and along the NE FL Coast from JAX southward through the St Johns River Basin at times.

Friday . Long-range models trending towards rainfall chances increasing as onshore flow from the Atlc in the lower levels is over-run by moist SW flow in the mid levels out of the Gomex and this will likely bring at least scattered to numerous showers and highs pushing closer to 70 degrees.

Saturday . Models are trending drier on Saturday as Gulf low pressure/disturbance is kicked towards the NE and into the Carolinas faster than previous runs and any rainfall from Friday Night should come to an end early with skies becoming partly sunny and despite the breezy West to Northwest winds still expect highs into the 60s for most locations.

Sunday . High pressure builds in from the West and expect dry conditions under mostly sunny skies and Highs near climo levels in the lower 60s. Some low temps in the mid/upper 30s over inland areas Saturday and Sunday nights with some patchy frost, but sub- freezing temps are not expected.

AVIATION. [Through 12Z Tuesday]

VFR conditions are expected across all terminals through the end of the period under mostly clear skies. Few to scattered low level clouds may intrude near SGJ from the northeast after 15Z, but model guidance does not appear strong enough to support MVFR ceilings. Otherwise northerly winds after 14Z will pick up a bit along the coastal TAF sites SSI, CRG, and SGJ with gusts 14-16 knots until sunset with lighter winds around 5 knots for JAX, VQQ, and GNV.

MARINE.

A Small Craft Advisory for the nearshore and offshore waters will continue through Tuesday afternoon. Strong high pressure to the northwest of the area waters will move east on Monday and will bring in elevated northerly winds with seas across the area waters On Tuesday the high will build closer towards the region and elevated winds from the north will continue. A chance of showers is possible Tuesday. On Wednesday high pressure will be north of the waters while a low pressure system forms over the Bahamas. Winds will increase and veer to the northeast as the pressure gradient tightens between the high pressure to the north and the surface low to the southeast of the area waters. A chance of showers is expected Tuesday and into Wednesday.

Rip Currents: Moderate Risk of rip currents today for NE FL beaches with a Moderate risk of rip currents for SE GA beaches.

PRELIMINARY POINT TEMPS/POPS.

AMG 49 27 47 27 52 / 0 0 0 0 0 SSI 50 34 46 33 52 / 0 0 0 0 0 JAX 55 31 49 31 55 / 0 0 0 0 0 SGJ 56 38 51 36 57 / 0 0 0 0 10 GNV 56 30 51 28 56 / 0 0 0 0 0 OCF 59 31 53 28 59 / 0 0 0 0 0

JAX WATCHES/WARNINGS/ADVISORIES. FL . Freeze Watch from this evening through Tuesday morning for Baker- Bradford-Central Marion-Clay-Eastern Alachua-Gilchrist- Hamilton-Inland Duval-Inland Nassau-Northern Columbia- Southern Columbia-Suwannee-Union-Western Alachua-Western Marion.

GA . Freeze Watch from this evening through Tuesday morning for Appling-Atkinson-Bacon-Brantley-Clinch-Coastal Camden- Coastal Glynn-Coffee-Echols-Inland Camden-Inland Glynn-Jeff Davis-Northeastern Charlton-Northern Ware-Pierce-Southern Ware-Wayne-Western Charlton.

AM . Small Craft Advisory until 4 PM EST Tuesday 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-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.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LTJF1 14 mi55 min 47°F 37°F
BLIF1 16 mi49 min N 8.9 G 13 1025.2 hPa
DMSF1 17 mi43 min 63°F
41117 20 mi31 min 64°F5 ft
NFDF1 20 mi43 min N 1.9 G 8.9
SAUF1 - St. Augustine, FL 24 mi61 min N 16 G 18 48°F 63°F1023.6 hPa (+0.8)
FRDF1 - 8720030 - Fernandina Beach, FL 34 mi43 min NNW 9.9 G 17
41112 - Offshore Fernandina Beach, FL (132) 36 mi31 min 61°F5 ft
GTXF1 - Guana Tolomato Matanzas Reserve, FL 37 mi76 min NNW 6 52°F 1025 hPa38°F

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Jacksonville Craig Municipal Airport, FL13 mi68 minNNW 910.00 miFair49°F34°F56%1024.5 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL14 mi69 minNNW 810.00 miFair49°F37°F64%1024.3 hPa
Northeast Florida Regional Airport, FL15 mi65 minNNW 1310.00 miFair51°F37°F61%1024 hPa
Jacksonville Naval Air Station, FL17 mi68 minN 1010.00 miA Few Clouds48°F30°F50%1024.4 hPa

Link to 5 minute data for KCRG

Wind History from CRG (wind in knots)
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E11E8E8E8E7E8E7E6E5SE4SE3SE5SE4SE8SE12
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Tide / Current Tables for Palm Valley, ICWW, Florida
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Palm Valley
Click for Map
Mon -- 03:30 AM EST     Moonrise
Mon -- 07:09 AM EST     2.12 feet High Tide
Mon -- 07:21 AM EST     Sunrise
Mon -- 12:33 PM EST     -1.80 feet Low Tide
Mon -- 02:19 PM EST     Moonset
Mon -- 05:51 PM EST     Sunset
Mon -- 07:17 PM EST     1.27 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-2.6-2.1-1.1-0.20.51.21.82.11.91.30.5-0.6-1.6-1.7-1-0.40.10.611.31.10.6-0.1-1.1

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
Click for Map
Mon -- 12:15 AM EST     0.01 knots Slack
Mon -- 03:05 AM EST     2.39 knots Max Flood
Mon -- 03:30 AM EST     Moonrise
Mon -- 06:33 AM EST     -0.01 knots Slack
Mon -- 07:21 AM EST     Sunrise
Mon -- 10:05 AM EST     -2.16 knots Max Ebb
Mon -- 01:20 PM EST     0.00 knots Slack
Mon -- 02:18 PM EST     Moonset
Mon -- 03:52 PM EST     1.63 knots Max Flood
Mon -- 05:51 PM EST     Sunset
Mon -- 06:44 PM EST     -0.00 knots Slack
Mon -- 09:46 PM EST     -2.08 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.3122.42.21.70.7-0.6-1.6-2-2.2-2-1.4-0.40.71.51.61.40.8-0.3-1.4-2-2.1-1.9

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 (12,3,4,5)
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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.