Sunday, July25, 2021
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Marine Weather and Tides
St. Marys, GA

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 6:38AMSunset 8:26PM Sunday July 25, 2021 12:28 PM EDT (16:28 UTC) Moonrise 9:04PMMoonset 7:05AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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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AMZ450 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- 913 Am Edt Sun Jul 25 2021
.small craft exercise caution...
Rest of today..Northeast winds 15 to 20 knots. Seas 3 to 5 feet with a dominant period 7 seconds. Choppy on the intracoastal waters. Slight chance of showers.
Tonight..Northeast winds 15 knots becoming east after midnight. Seas 3 to 5 feet with a dominant period 6 seconds. A light chop on the intracoastal waters. Chance of showers and slight chance of Thunderstorms.
Monday..Southeast winds 15 knots. Seas 3 to 5 feet with a dominant period 6 seconds. A moderate chop on the intracoastal waters. Chance of showers and Thunderstorms.
Monday night..South winds 10 to 15 knots diminishing to 5 to 10 knots after midnight. Seas 3 to 4 feet. A light chop on the intracoastal waters. Slight chance of showers in the evening.
Tuesday..South winds 5 to 10 knots. Seas 2 to 3 feet. A light chop on the intracoastal waters. Slight chance of showers in the morning. Slight chance of Thunderstorms. Chance of showers in the afternoon.
Tuesday night..South winds 10 knots becoming southwest 5 to 10 knots after midnight. Seas 2 to 3 feet. Chance of showers and slight chance of Thunderstorms.
Wednesday..South winds 5 to 10 knots. Seas 2 to 3 feet. Showers and Thunderstorms likely.
Wednesday night..Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Chance of showers and Thunderstorms.
Thursday..Southwest winds 5 to 10 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- 913 Am Edt Sun Jul 25 2021
Synopsis.. An area of low pressure off the east central florida coast will drift westward towards north central florida today and tonight. Mariners should Monitor the latest tropical weather outlook from the national hurricane center with respect to the future progress of this system. High pressure will build toward the east northeast Monday, then more to the southeast toward midweek.
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 St. Marys, GA
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location: 30.72, -81.55     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 251255 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 855 AM EDT Sun Jul 25 2021

. BREEZY ONSHORE FLOW CONTINUES WITH LIMITED RAIN CHANCES TODAY .

UPDATE.

Dry airmass in place with Precipitable Water Amounts (PWATs) less than 1.4 inches area-wide will slowly moisten over the next 24 hours as low pressure trough 100-200 miles off the Florida East Coast will inch slowly towards the West-Northwest with only a slow increase in convection expected, mainly impacting the Atlc Coastal waters tonight. The Northeast flow around this feature will bring another breezy day along the Atlc Coastal Counties/Beaches including the I-95 corridor with sustained winds of 15-20 mph and peak gusts in the 25-30 mph range, while lesser Northeast winds of 10-15 mph are expected over inland areas. Just enough increase in moisture for a few showers and possible isolated storm this afternoon south of a line from St Augustine to Ocala today, then as moisture increases tonight expect widely scattered showers along the entire I-95 corridor and St Johns River Basin with a few storms pushing onshore from JAX southward to St Augustine/Flagler vicinity by the overnight hours. The onshore flow and full moon will continue to bring elevated water levels during high tide around 1.5 ft MHHW along the Atlantic Coast, but for now expected to remain just below minor flood levels and will continue to just highlight in local briefing products. Max Temps close to climo values today ranging from the mid/upper 80s along the Atlc Coast into the lower 90s well inland. A bit more mild tonight with lows in the lower/middle 70s inland and upper 70s/near 80 degrees along the Atlc Coast.

PREV DISCUSSION [714 AM EDT].

NEAR TERM [Through Tonight].

GOES-16 Total Precipitable Water imagery early this morning showed PWATs ranging from 1-1.25 inches across most of the area, with slightly higher values across Flagler and southeastern Marion County. This has led to temperatures in the upper 60s to lower 70s across the interior, and some patchy fog was also observed. The drier air will push slowly westward as the weak area of low pressure east of north central Florida drifts towards the coast today. Isolated to widely scattered showers are possible south of a line from Jacksonville to Gainesville.

The area of low pressure will move towards the coast of northeast Florida tonight, and move inland around or just after daybreak on Monday. Moisture is forecast to surge back into the area overnight, with PWATs increasing back to 1.8-2.2 inches along the coastal areas by daybreak on Monday. Rain chances will increase after midnight, with widely scattered showers possible along the coastal areas before daybreak on Monday.

Highs today will be in the lower 90s across the interior and mid to upper 80s for the coastal counties. Overnight lows tonight will be in the 70s.

SHORT TERM [Monday Through Tuesday].

Upper ridge will remain oriented WNW-ESE across AL/GA during this period. At the surface, weak low pressure will gradually move westward across northern FL peninsula. Latest guidance shows increasing coverage of showers/t-storms expected during this period. Forecast area will be in a warm, humid environment with afternoon temperatures into the 90s and dew points into the mid 70s supporting heat index values of 100-105.

LONG TERM [Wednesday Through Sunday].

Weak upper-level shortwave expected to move across the Southeast late Tuesday night and Wednesday . then upper ridge becomes re- established NW-SE over forecast area during the remainder of the period. Models suggest greater precipitation coverage will be Wed- Thu . with lesser coverage Fri-Sat. Expect to see a bit of a warming trend as 1000-850mb thickness values rise from the 1430s early in the week to the 1440s by the end of the week . supporting mid 90s temperatures especially I-10 northward by the end of the work week. In addition, mid 70s dew points will support 104-108 heat index values, which will likely be the main story for next Weekend's weather.

AVIATION. [Through 12Z Monday]

VFR conds at all TAF sites this morning, except for MVFR CIGS in strato-cu deck pushing onshore at SGJ. This onshore push of clouds will bring at least SCT020-SCT025 to all TAF sites as diurnal heating sets in this morning and NE winds increase once again into the 10-13 knot range with some higher gusts of 15-21 knots possible. Still too much uncertainty in forecast of low pressure trough to start adding in too much in the way of rainfall chances tonight yet, but will take a closer look at the 12Z model guidance to start trending with lower conditions in potential showers at SGJ in the 06-12z time frame, but for now VCSH is about all that is expected this TAF period.

MARINE.

Northeast winds and building seas have developed over the waters due to low pressure off the east central Florida coast. The area of low pressure will drift into the coastal waters this afternoon and tonight, and then move inland across northeast Florida Monday morning. High pressure to the north will then move southeast which will veer the winds from northeast this weekend to the southeast and south early this week.

Rip Currents: High risk of rip currents for northeast Florida beaches today and moderate risk of rip currents on Monday. Moderate risk of rip currents for southeast Georgia beaches through Monday.

HYDROLOGY.

Elevated tidal levels are possible at high tide today due to the full moon and onshore flow.

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

PRELIMINARY POINT TEMPS/POPS.

AMG 93 71 92 74 93 / 0 0 50 10 70 SSI 87 77 87 77 89 / 10 20 30 10 50 JAX 90 75 90 75 93 / 10 20 50 20 60 SGJ 88 76 89 75 91 / 20 30 50 20 50 GNV 92 73 91 74 91 / 10 20 70 20 70 OCF 92 73 92 74 92 / 20 10 70 30 70

JAX WATCHES/WARNINGS/ADVISORIES. FL . High Rip Current Risk until 7 PM EDT this evening for Coastal Duval-Coastal Flagler-Coastal Nassau-Coastal St. Johns.

GA . None. AM . None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRDF1 - 8720030 - Fernandina Beach, FL 5 mi58 min N 12 G 16 87°F 83°F1016.1 hPa
41112 - Offshore Fernandina Beach, FL (132) 14 mi58 min 82°F 82°F4 ft
NFDF1 22 mi58 min NNE 4.1 G 14 84°F 1015.5 hPa78°F
BLIF1 23 mi58 min NNE 11 G 16 83°F 1015.9 hPa79°F
DMSF1 23 mi58 min 84°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 23 mi58 min NNE 14 G 20 82°F 83°F1016.3 hPa
LTJF1 24 mi58 min 82°F 74°F
JXUF1 26 mi58 min 85°F
BKBF1 37 mi58 min 84°F 1015.9 hPa
SAXG1 - Sapelo Island Reserve, GA 50 mi88 min NNE 9.9 83°F 1016 hPa (+0.0)82°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 59 mi98 min NE 18 G 19 81°F 83°F4 ft1015.3 hPa (+0.4)76°F

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fernandina Beach Municipal Airport, FL9 mi33 minNNE 12 G 1810.00 miMostly Cloudy84°F81°F90%1015.9 hPa
Jacksonville International Airport, FL17 mi32 minNE 12 G 1510.00 miMostly Cloudy86°F74°F67%1015.5 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL24 mi36 minN 1210.00 miMostly Cloudy85°F77°F77%1015.7 hPa

Link to 5 minute data for KFHB

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2 days agoW9SW9W6E8N11E4SE5SE5SW6S6S9SW7SW6W4SW6SW5W4W4NW5N5NW8NW9N7NW7

Tide / Current Tables for St. Marys, St. Marys River, Florida
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St. Marys
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Sun -- 05:01 AM EDT     -0.17 feet Low Tide
Sun -- 06:39 AM EDT     Sunrise
Sun -- 08:05 AM EDT     Moonset
Sun -- 11:13 AM EDT     6.46 feet High Tide
Sun -- 05:04 PM EDT     -0.20 feet Low Tide
Sun -- 08:25 PM EDT     Sunset
Sun -- 10:03 PM EDT     Moonrise
Sun -- 11:46 PM EDT     7.45 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.25.8420.4-0.20.31.63.24.75.96.46.25.23.61.80.4-0.20.31.53.14.86.27.2

Tide / Current Tables for St. Johns River Entrance, Florida Current (3)
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St. Johns River Entrance
Click for Map
Sun -- 12:23 AM EDT     -0.01 knots Slack
Sun -- 03:22 AM EDT     -2.20 knots Max Ebb
Sun -- 06:39 AM EDT     Sunrise
Sun -- 07:07 AM EDT     0.00 knots Slack
Sun -- 08:04 AM EDT     Moonset
Sun -- 09:33 AM EDT     2.31 knots Max Flood
Sun -- 12:29 PM EDT     -0.00 knots Slack
Sun -- 03:19 PM EDT     -2.14 knots Max Ebb
Sun -- 07:06 PM EDT     0.00 knots Slack
Sun -- 08:25 PM EDT     Sunset
Sun -- 09:56 PM EDT     2.88 knots Max Flood
Sun -- 10:03 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.6-0.9-1.8-2.2-2.1-1.8-1.2-0.21.22.22.21.70.7-0.7-1.7-2.1-2.1-1.6-1-0.11.22.52.92.5

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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