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Marine Weather and Tides Neptune 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.

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Sunrise 6:22AM

Sunset 8:23PM

Sunday May 31, 2020 12:35 PM EDT (16:35 UTC)

Moonrise 1:56PM

Moonset 1:55AM

Illumination 71%

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.

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7 Day Forecast for Marine Location Near Neptune Beach, FL

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Area Discussion for - Jacksonville, FL

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FXUS62 KJAX 311308 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 908 AM EDT Sun May 31 2020

UPDATE.

Slow moving cold front has finally made it to SE GA and will drift southward into NE FL this afternoon. Following Mostly Sunny skies this morning expect Scattered showers and isolated storms to break out along the East Coast Sea Breeze as it moves inland along the I-95 corridor and closer to the frontal boundary across inland NE FL. Full insolation this morning ahead of convection will push Max Temps into the lower 90s over inland areas and upper 80s along the Atlc Coast. While significant severe weather is not expected today, the interaction of the frontal boundary with the East Coast Sea Breeze pushing inland from the Atlc, some strong Storms with gusty winds of 40-55 mph, deadly lightning and locally heavy rainfall can be expected from JAX southward through the St Johns River Basin and along the I-95 corridor, mainly from 4pm-8pm.

PREV DISCUSSION [737 AM EDT].

NEAR TERM [Through Tonight].

Today, a cold front will move through the area later this morning over SE GA and then through NE FL during the midday hours with a chance of showers and a slight chance of thunderstorms along and ahead of the front mainly along and south of I-10. The storms are not expected to be severe as 500 mb temperatures remain warmer aloft around -6 to -7 degrees Celsius with drier air filtering in in the mid level northwest flow aloft that should help suppress overall storm development while atmospheric moisture levels drop steadily through the day. Light west southwest winds will veer to the northwest today by midday over much of the area and then become northerly this afternoon as the cold front pushes southward into north central Florida by the late afternoon hours.

Highs this afternoon will still soar into the low 90s along and west of I-95 over NE FL and south of Waycross in SE GA before the front moves through with drier air aloft and at the surface. Areas north and west of Waycross will see highs in the upper 80s.

Tonight, a mid to upper level trough over the mid Atlantic and northeast will move off into the Atlantic as a strong mid level ridge over the midwest builds in over the southeast states. This will allow surface high pressure to build north of the region and northerly winds will veer again to the northeast and increase to around 15-20 mph at the coast with gusts up to 25 mph as the local pressure gradient increases over the area. A chance of showers are possible over the coastal counties as cooler drier air from the northeast wedges down the southeast Atlantic coast.

Lows will remain above seasonal values along the coast and over north central Florida with readings in the low 70s while inland areas of SE GA and NE FL dip into the upper 60s as drier air at the surface filters in from the northeast.

SHORT TERM [Monday Through Tuesday].

Monday: An upper level trough located from the Northeast southward to the east of the Carolinas and Bahamas Monday morning will pivot northeastward through the day. Upper level high pressure will build over the Florida Peninsula, the northern Gulf coast and southern Plains. At the surface, a cold front will be across south Florida. High pressure over the Ohio and Tennessee Valleys will shift east southeastward and off the coast of the Carolinas Monday night. Lingering low level moisture in the northeasterly low level flow may lead to a few coastal showers for northeast Florida. As surface high pressure shifts towards the coast of the Carolinas, drier air will move into the area from the northeast and low level flow will become easterly. Dry conditions will prevail overnight Monday. Cooler temperatures are expected, with highs in the lower 80s for the coastal counties, and the mid to upper 80s elsewhere. Overnight lows will be in the 60s across the interior and around 70 at the beaches.

Tuesday: An upper level shortwave will move off the coast of the Carolinas, reinforcing the base of the upper trough east of the conus. Northerly upper level winds will prevail by the afternoon. Surface high pressure will settle towards Bermuda, and the surface ridge axis will be across the Florida/Georgia border. Drier air will continue to filter into the eastern two thirds of the area through the day, with precipitable water values falling below 1 inch along the coast. Highs will be similar to Monday with temps in the low 80s for the coastal counties and the mid to upper 80s elsewhere. Overnight lows are forecast to be in the 60s.

LONG TERM [Wednesday Through Sunday].

Weak upper ridging extending from the Bahamas and across the Southeast will shift east as weak troughing develops along the northern Gulf coast and northeastern Gulf. Dry conditions will prevail on Wednesday. Deep southerly flow will develop Wednesday night and Thursday, and deep south to southwesterly flow will prevail through the end of the week. Precipitable water values are forecast to surge back to 2+ inches, and scattered to numerous showers and storms are expected each day through the weekend. Temperatures will return to near normal in the upper 80s to lower 90s. Overnight lows will increase from the mid 60s to near 70 Thursday morning to the low to mid 70s by the weekend.

AVIATION. [Through 12Z Monday]

VFR conds this morning with light fog (MVFR VSBYS) at GNV briefly until 13z, otherwise with weak frontal boundary pushing through the region expect diurnal CU field to develop this morning with widely scattered showers possible (VCSH) near all TAF sites starting around 17z, with wind shifts from the North, then more stronger convection possible by 20Z at GNV/SGJ/VQQ, but with rain chances less than 50% have kept just (VCTS) for now with VCSH continuing at the other TAF sites as the local winds become more onshore NE to E at all TAF sites around 10-12 knots. Diurnal convection should fade around sunset (00-02Z) leaving just leftover scattered low clouds at TAF sites through the night with light NE flow over inland areas and while NE flow will slowly increase at the coastal TAF sites through the night. Some low chances of possible MVFR CIGS late in the period at SSI but for now have kept VFR CIGS just above 3000 ft, although this could change in later issuances.

MARINE.

A cold front will move south across the local waters today with winds from the north veering to the northeast. The cold front will then push south of the waters tonight and winds will veer to the east. As high pressure builds from the north tonight into Monday, small craft exercise caution conditions are possible Monday into Monday night due to elevated winds and seas as the local pressure gradient increases. The high will move northeast of the area waters Monday night into Tuesday, and then to the east Tuesday night through Thursday. Dry conditions are expected Tuesday and Wednesday with a chance of showers and thunderstorms over the waters on Thursday.

Rip Currents: Moderate risk expected on Sunday. High rip current risk expected on Monday for NE Florida beaches through Tuesday due to onshore flow and building easterly swells.

PRELIMINARY POINT TEMPS/POPS.

AMG 92 68 85 62 86 / 10 10 10 0 0 SSI 87 73 80 70 81 / 20 20 10 0 0 JAX 93 72 83 68 83 / 40 30 30 10 0 SGJ 89 73 82 70 82 / 30 30 40 10 10 GNV 93 70 87 67 86 / 40 20 30 10 10 OCF 93 71 89 68 86 / 50 30 30 10 10

JAX WATCHES/WARNINGS/ADVISORIES. FL . None. GA . None. AM . None.

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
LTJF1	5 mi	54 min		85°F				71°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL	6 mi	48 min	ENE 6 G 7	83°F	80°F		1017.3 hPa
BLIF1	8 mi	54 min	SW 6 G 8	86°F			1017.7 hPa	76°F
DMSF1	9 mi	48 min			82°F
JXUF1	10 mi	48 min			83°F
NFDF1	12 mi	48 min	W 2.9 G 5.1	88°F
FRDF1 - 8720030 - Fernandina Beach, FL	25 mi	48 min	N 2.9 G 8	91°F	82°F		1016.9 hPa
41117	28 mi	36 min			80°F	2 ft
41112 - Offshore Fernandina Beach, FL (132)	29 mi	36 min			80°F	2 ft
SAUF1 - St. Augustine, FL	33 mi	36 min		82°F	78°F		1017 hPa (+0.3)
GTXF1 - Guana Tolomato Matanzas Reserve, FL	46 mi	51 min	ENE 2.9	86°F			1018 hPa	74°F

Wind History for I-295 Bridge, St Johns River, FL

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Last 24hr

1 day ago

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Jacksonville Craig Municipal Airport, FL	5 mi	43 min	N 8	10.00 mi	Fair	87°F	70°F	57%	1016.7 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL	6 mi	44 min	ENE 6	10.00 mi	Mostly Cloudy	84°F	73°F	72%	1016.8 hPa
Jacksonville Naval Air Station, FL	14 mi	43 min	NNE 5	10.00 mi	Mostly Cloudy	90°F	69°F	50%	1016.6 hPa
Jacksonville International Airport, FL	19 mi	40 min	NNW 4	10.00 mi	Mostly Cloudy	91°F	71°F	52%	1016.6 hPa
Fernandina Beach Municipal Airport, FL	21 mi	41 min	E 8	10.00 mi	Partly Cloudy	88°F	78°F	74%	1016.9 hPa
Northeast Florida Regional Airport, FL	24 mi	40 min	NNW 5	10.00 mi	Partly Cloudy	88°F	71°F	57%	1017 hPa

Link to 5 minute data for KCRG

Wind History from CRG (wind in knots)

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Tide / Current Tables for Pablo Creek, ICWW bridge, St. Johns River, Florida

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Tide / Current Tables for St. Johns River Entrance, Florida Current

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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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East

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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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