Marine Weather Net

St. Augustine to Flagler Beach, FL 20 - 60 NM Marine Forecast


10 - 15


10 - 15


20 - 25


20 - 25

The Marine Weather Forecast In Detail:
AMZ474 Forecast Issued: 220 AM EDT Wed Oct 28 2020

Today...Southeast Winds 10 To 15 Knots. Seas 3 To 4 Feet With A Dominant Period 8 Seconds.
Tonight...Southeast Winds 10 To 15 Knots Becoming South 15 To 20 Knots After Midnight. Seas 3 To 5 Feet With A Dominant Period 8 Seconds.
Thursday...South Winds 20 To 25 Knots. Seas 6 To 8 Feet With A Dominant Period 6 Seconds. Slight Chance Of Showers And Thunderstorms In The Afternoon.
Thursday Night...Southwest Winds 20 To 25 Knots Becoming West After Midnight. Seas 6 To 8 Feet. Chance Of Showers And Slight Chance Of Thunderstorms.
Friday...Northwest Winds 15 To 20 Knots. Seas 5 To 7 Feet.
Friday Night...Northeast Winds 15 To 20 Knots. Seas 4 To 6 Feet.
Saturday...East Winds 15 To 20 Knots. Seas 5 To 7 Feet. Chance Of Showers.
Saturday Night...East Winds 15 To 20 Knots. Seas 6 To 8 Feet. Slight Chance Of Showers.
Sunday...Northeast Winds 10 To 15 Knots Becoming North 10 Knots In The Afternoon. Seas 5 To 7 Feet. Slight Chance Of Showers.
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AMZ400: Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm
220 AM EDT Wed Oct 28 2020

High pressure to the north will move east as Hurricane Zeta heads north towards the central Gulf coast. The high will sink to the southeast Thursday, as Zeta moves inland towards the Tennessee Valley. Winds will increase from the south-southwest on Thursday to Advisory levels. A cold front will move southeast across region Thursday night, with high pressure building to the northwest Friday. The high will build to the north then northeast Saturday. Another cold front will move across the area on Sunday.

Gulf Stream
The approximate location of the west wall of the Gulf Stream as of Oct 27, 2020 at 1200 UTC...
- 46 nautical miles east northeast of Flagler Beach.
- 53 nautical miles east northeast of Saint Augustine Beach.
- 53 nautical miles east of Jacksonville Beach.
- 70 nautical miles east southeast of St Simons Island.
Area Forecast Discussion
National Weather Service Jacksonville FL
350am EDT Wednesday Oct 28 2020

Near Term - Through Tonight
Easterly winds veer to southeasterly today as high pressure shifts to the east. Hurricane Zeta moves northward toward the central Gulf coast today likely making landfall in southeast Louisiana this evening. Zeta then accelerates to the northeast tonight passing to our northwest towards the Tennessee River Valley. Mainly dry conditions prevail for the area with isolated showers possible this afternoon over our western zones where moisture will be greater. Warm and humid conditions will continue with highs in the 80s and lows in the 70s.

.SHORT TERM [Thursday Through Friday]... Thursday...TC Zeta tracks NW of the region across the SE US and will increase the south to southwest low level winds to 15 to 25 mph with gusts to 35 mph at times. This will push Max Temps to record levels well into the 80s/near 90 for most locations by the early afternoon hours. The "tropical tail" of moisture will bring a round of scattered to numerous showers and storms moving from NW to SE across the region from the mid afternoon through evening hours before likely pushing into the Atlantic Coastal waters around midnight. Some of these storms could be strong to severe with gusty winds of 40-60 mph and the risk of an isolated tornado is possible across inland SE GA and the Suwannee River Valley from the late morning into the early afternoon hours. Clearing skies expected during the overnight hours and Northwest winds should usher in some cooler temps by sunrise Friday morning with even some upper 50s for inland SE GA and 60s elsewhere.

Friday...Cooler and drier conditions following the frontal passage under Sunny skies and breezy Northwest to North winds around 15 mph. Max temps closer to seasonable values in the mid to upper 70s and lows Friday Night in the 50s.

.LONG TERM [Saturday Through Tuesday]... Saturday/Sunday...High pressure builds north of the region into the Carolinas and low level flow becomes a breezy Northeast onshore flow at 15-20 mph along the Atlantic Coastal Counties with a few coastal showers possible at times, but overall rainfall chances remain low with inland areas remaining dry. Seasonable temps continue with most highs in the 70s except for some lower 80s across inland NE FL and lows in the 50s/lower 60s.

Monday...Upper level trough passage through the SE US clears out any lingering moisture offshore and low level winds back to the North-Northeast and remain breezy at 15-20 mph and temps cool sharply more with Highs only reaching the mid 60s to near 70 degrees under Mostly Sunny skies and temps falling Monday Night into the 40s across inland SE GA/Suwannee River Valley and 50s elsewhere.

Tuesday...Winds veer back to the Northeast and the breezy onshore flow will modify temps slightly with Highs back into the lower/middle 70s, but Mostly Sunny skies will continue as any isolated coastal showers should hold off until late Tuesday Night or Wednesday.

Easterly winds will veer and to southeasterly and increase today as high pressure to the north moves east and Hurricane Zeta moves towards the north central Gulf. Zeta will impact the northern Gulf coast Wednesday night, resulting in our winds becoming southerly. Remnants of Zeta will accelerate through the lower Tennessee Valleys on Thursday with a strong cold front expected to cross our local waters early Friday morning. Winds will increase from the southwest on Thursday to Advisory levels. Winds will then shift to the west and northwest on Friday and increase from the northeast Friday night and Saturday. Advisory conditions will likely continue through the weekend.

Rip Currents
Moderate risk for rip currents at area beaches through Thursday.


Record Highs for Wednesday October 28th... JAX 89/2010...GNV 91/2010...AMG 88/1963...SSI 87/1963...CRG 90/2010

Record Highs for Thursday October 29th... JAX 87/1984...GNV 89/2019...AMG 88/1996...SSI 85/1996...CRG 87/2002

NOAA Jacksonville FL Office: Watches - Warnings - Advisories
FL...None. GA...None. AM...None.