Tuesday, July27, 2021
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Marine Weather and Tides
Jacksonville Beach, FL

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:40AMSunset 8:24PM Tuesday July 27, 2021 12:58 AM EDT (04:58 UTC) Moonrise 10:10PMMoonset 9:11AM Illumination 92% Phase: Waning Gibbous; Moon at 18 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:202107271000;;509282 Fzus52 Kjax 270033 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 833 Pm Edt Mon Jul 26 2021 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. Amz450-452-454-271000- 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- 833 Pm Edt Mon Jul 26 2021
Tonight..South winds 10 to 15 knots diminishing to 5 to 10 knots after midnight. Seas 3 to 4 feet with a dominant period 6 seconds. A light chop on the intracoastal waters. Chance of showers in the evening. Slight chance of Thunderstorms. Slight chance of showers after midnight.
Tuesday..South winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet with a dominant period 9 seconds. A moderate chop on the intracoastal waters. Slight chance of showers and Thunderstorms in the morning, then chance of showers and Thunderstorms in the afternoon.
Tuesday night..Southwest winds 5 to 10 knots. Seas 3 to 4 feet with a dominant period 9 seconds. Mostly smooth on the intracoastal waters. Chance of showers in the evening. Slight chance of Thunderstorms. Slight chance of showers after midnight.
Wednesday..West winds 5 to 10 knots becoming south in the afternoon. Seas 2 to 3 feet. A light chop on the intracoastal waters. Chance of showers and slight chance of Thunderstorms in the morning, then showers likely and chance of Thunderstorms in the afternoon.
Wednesday night..Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Mostly smooth on the intracoastal waters. Chance of showers in the evening. Slight chance of Thunderstorms. Slight chance of showers after midnight.
Thursday..Southwest winds 5 knots becoming southeast 5 to 10 knots in the afternoon. Seas 2 to 3 feet. A light chop on the intracoastal waters. Chance of showers and Thunderstorms.
Thursday night..Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Slight chance of showers and Thunderstorms.
Friday..Southwest winds 5 to 10 knots becoming south 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Slight chance of showers and Thunderstorms.
Friday night..Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Saturday..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Chance of showers and Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 833 Pm Edt Mon Jul 26 2021
Synopsis.. A weakening surface low near the southeast georgia atlantic coast will continue to drift northward and inland tonight. A couple of surface troughs will edge southward across the local waters through the week bringing increased daily rain chances with high pressure remaining south of the region.
Gulf stream.. The approximate location of the west wall of the gulf stream as of jul 24, 2021 at 1200 utc... 66 nautical miles east of flagler beach. 64 nautical miles east northeast of saint augustine beach. 67 nautical miles east of jacksonville beach. 79 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Jacksonville Beach, FL
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location: 30.29, -81.36     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 270103 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 903 PM EDT Mon Jul 26 2021

. NEW DAILY RECORD PWAT AT JAX .

UPDATE.

A weak surface low was drifting northward near St. Simons Island this evening, with fragmented bands of brief showers rotating around the center mainly across SE GA and over the adjacent coastal waters. Aloft, warm, stable conditions prevailed under a COL region with a daily record precipitable water at JAX of 2.54 inches (old record for the date was 2.39 inches). This tropical airmass combined with weak storm motion and low level convergence produced locally heavy rainfall in training bands today, with pockets of 2-4.5 inches of rainfall east of Highway 301.

Overnight, scattered showers with isolated thunderstorm potential will continue to focus across SE GA through midnight as the surface low drifts northward over the Golden Isles and upper level PVA drifts NW. After midnight, mostly dry conditions are expected, with some drier mid level air lifting northward from central FL, but a rouge shower or tstorm cannot be ruled out especially near the Atlantic coast as well as across our Suwannee River Valley zones as SW flow steering flow develops overnight under lingering tropical moisture.

Lingering cloud cover and high dew pts will continue muggy above normal lows in the mid to upper 70s inland to near 80 toward the coast.

Elevated rain chances tomorrow with a wake trough axis across SE GA and near the I-10 corridor of NE FL brining the potential for locally heavy, potentially flooding rainfall. The latest Excessive Rainfall Outlook from WPC upgraded SE GA to a Slight Risk for Tuesday.

MARINE.

Elevated SSE winds continued near 15-20 kts at buoy 41008 this evening with combined seas 4.8 ft. Updated the forecast to advertised Small Craft Exercise Caution conditions this evening for our outer waters. Winds weaken further after midnight into the 10-15 kt range as they become SSW toward sunrise.

Rip Currents: Moderate risk through Tuesday expected.

PREV DISCUSSION [800 PM EDT].

NEAR TERM [Through Tonight].

The area of weak low pressure is positioned along the NE FL and SE GA coastline, centered near the FL/GA border, and it will continue to slowly move inland through tonight while weakening. Bands of showers with embedded thunderstorms continue to swirl around the low, but coverage is expected to decrease overnight. GOES-16 imagery indicates PWATs over the area are high near 2-2.5 inches due to the plume of tropical moisture associated with the low. High moisture will continue the threat for heavy rainfall and localized flooding through this evening. Overnight low temperatures will drop into the middle 70s, slightly cooler inland than at the coast where sea surface temperatures in the lower 80s will keep temperatures a little warmer. Late tonight into early Tuesday morning, patchy light fog will be possible.

SHORT TERM [Tuesday Through Wednesday Night].

Tuesday, the low will continue to gradually weaken as it drifts over southern GA. The latest GFS model run shows the low potentially drifting towards the South Carolina coast, but remaining very weak. Ample moisture will remain over the area in the wake of the low, PWATs are expected to remain over 2 inches. An upper level shortwave trough over the US east coast will reach down into southern GA, which will result in numerous afternoon and evening showers and storms along the sea breezes. Precipitation coverage will decrease overnight.

High temperatures on Tuesday will be in the lower 90s with heat index values in the 102-106F range. Tuesday night, low temperatures will drop into the middle 70s.

Wednesday, upper level troughing over the US east coast will shift slightly offshore over the Atlantic, but will continue to enhance convection over NE FL and SE GA. Expect numerous afternoon and evening showers and storms again along the sea breezes.

High temperatures on Wednesday will be in the upper 80s to lower 90s with heat index values in the 102-108F range. Wednesday night, low temperatures will drop into the middle 70s.

LONG TERM [Thursday Through Monday].

Upper level troughing will build over the US northeast and surface high pressure will develop to our southwest over the Gulf of Mexico. This pattern will push several shortwave troughs over the deep south that will interact with the sea breezes. Daily showers and storms are expected. High temperatures through the long term will be in the lower and middle 90s with heat indices over 100F. Late this week we may see heat indices reach above 108F. Low temperatures through the long term will be in the 70s.

AVIATION. [Through 00Z Wednesday]

Broken bands of showers with a low chance of a thunderstorms will continue to rotate around a weak surface low drifting WNW near the SE GA coast this evening. Included VCSH this evening for all terminals with TEMPO groups for restrictions to MVFR ceilings due to brief showers. Prevailing winds were WSW inland and across NE FL terminals to easterly near SSI, just north of the surface low. Winds will continue back further WSW tonight across FL terminals and the surface low drifts farther north, while winds at SSI veer SE to SSW through sunrise trailing the low. The best chance of showers and restrictions due to low clouds will focus near SSI through the night, and advertised prevailing MVFR by 04z, then improvement to VFR after sunrise Tue. SW winds will bring showers and isolated tstorms inland from the Gulf Coast region toward GNV through midday. A weaker east coast sea breeze will back winds at coastal terminals to SSE in the early afternoon. Giving lingering tropical moisture, a couple weak surface troughs meandering over the area and both west and east coast sea breezes, expect an increase in shower and thunderstorm coverage Tue afternoon and into the evening and indicated VCTS for all terminals beginning near 17z for GNV to 20z for Atlantic coast terminals.

FIRE WEATHER.

Weak low pressure along the NE FL and SE GA coastline will continue to move inland through tonight. Locally heavy rainfall will be possible with showers and storms, coverage will decrease overnight. A trough over the US east coast will remain through mid-week, enhancing afternoon and evening thunderstorms each day. Weak transport winds will result in patchy areas of low dispersions area-wide on Tuesday and in SE GA on Wednesday. Light patchy fog possible early Tuesday morning.

HYDROLOGY.

An area of low pressure along the coast will continue to move inland. Rainfall rates of 1-3 inches per hour are possible along the coastal counties. This will lead to locally heavy rainfall, with ponding on roads and localized flooding possible.

Rivers levels continue to fall with minor flooding ongoing along the lower portions of the Santa Fe River.

PRELIMINARY POINT TEMPS/POPS.

AMG 75 92 74 90 74 / 40 60 60 70 20 SSI 78 90 77 90 78 / 40 60 50 60 30 JAX 75 92 76 91 75 / 40 70 40 70 30 SGJ 76 90 76 91 75 / 40 60 30 60 40 GNV 75 91 74 90 74 / 30 60 40 80 30 OCF 75 91 74 91 74 / 20 60 40 70 30

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
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 8 mi89 min SW 4.1 G 5.1 80°F 83°F1015.4 hPa
LTJF1 8 mi89 min 80°F 78°F
BLIF1 11 mi89 min SSW 5.1 G 5.1 81°F 1015 hPa81°F
DMSF1 12 mi89 min 85°F
NFDF1 16 mi89 min S 5.1 G 7 81°F 1014.7 hPa81°F
BKBF1 19 mi89 min 83°F 1015 hPa
41117 25 mi59 min 83°F 83°F3 ft
FRDF1 - 8720030 - Fernandina Beach, FL 27 mi89 min SSE 5.1 G 8 84°F 84°F1014.9 hPa
41112 - Offshore Fernandina Beach, FL (132) 29 mi59 min 82°F 83°F3 ft
SAUF1 - St. Augustine, FL 30 mi59 min SSW 4.1 G 5.1 80°F 83°F1015.4 hPa (+1.6)76°F
GTXF1 - Guana Tolomato Matanzas Reserve, FL 44 mi74 min S 1.9 80°F 1016 hPa76°F

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mayport Naval Station - Adm David L. McDonald Field, FL8 mi67 minSSW 610.00 miMostly Cloudy81°F79°F94%1014.7 hPa
Jacksonville Craig Municipal Airport, FL9 mi66 minS 410.00 miOvercast81°F78°F91%1014.9 hPa
Jacksonville Naval Air Station, FL17 mi66 minS 610.00 miOvercast81°F79°F94%1014.7 hPa
Jacksonville International Airport, FL22 mi63 minS 310.00 miMostly Cloudy78°F78°F100%1014.5 hPa
Northeast Florida Regional Airport, FL22 mi63 minno data10.00 miFair79°F78°F97%1015.3 hPa
Fernandina Beach Municipal Airport, FL23 mi64 minS 610.00 miThunderstorm81°F0°F%1014.9 hPa

Link to 5 minute data for KNRB

Wind History from NRB (wind in knots)
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Tide / Current Tables for Jacksonville Beach, Florida
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Jacksonville Beach
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Tue -- 05:21 AM EDT     0.07 feet Low Tide
Tue -- 06:41 AM EDT     Sunrise
Tue -- 10:11 AM EDT     Moonset
Tue -- 11:24 AM EDT     5.46 feet High Tide
Tue -- 05:31 PM EDT     0.37 feet Low Tide
Tue -- 08:22 PM EDT     Sunset
Tue -- 11:10 PM EDT     Moonrise
Tue -- 11:48 PM EDT     5.79 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.84.93.520.80.10.31.12.43.74.85.45.34.73.52.31.10.50.51.22.33.64.75.6

Tide / Current Tables for St. Johns River Entrance, Florida Current (2) (expired 1999-12-31)
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St. Johns River Entrance
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Tue -- 01:36 AM EDT     -0.00 knots Slack
Tue -- 04:38 AM EDT     -2.42 knots Max Ebb
Tue -- 06:40 AM EDT     Sunrise
Tue -- 08:52 AM EDT     0.00 knots Slack
Tue -- 10:10 AM EDT     Moonset
Tue -- 11:06 AM EDT     1.95 knots Max Flood
Tue -- 01:52 PM EDT     -0.00 knots Slack
Tue -- 04:48 PM EDT     -2.27 knots Max Ebb
Tue -- 08:22 PM EDT     Sunset
Tue -- 09:04 PM EDT     0.00 knots Slack
Tue -- 11:10 PM EDT     Moonrise
Tue -- 11:28 PM EDT     2.11 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.80.8-0.6-1.8-2.3-2.4-2.1-1.6-10.21.41.91.71-0.2-1.4-2.1-2.3-2-1.6-1-0.11.22

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