Marine Weather Net

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


TONIGHT

TROPICAL
STORM
CONDITIONS
POSSIBLE

WEDNESDAY

TROPICAL
STORM
CONDITIONS
POSSIBLE

WEDNESDAY NIGHT

TROPICAL
STORM
CONDITIONS
EXPECTED

THURSDAY

TROPICAL
STORM
CONDITIONS
EXPECTED

The Marine Weather Forecast In Detail:
AMZ454 Forecast Issued: 538 PM EDT Tue Oct 08 2024

HURRICANE WARNING IN EFFECT
Tonight...Tropical Storm Conditions Possible With Hurricane Conditions Also Possible. Northeast Winds 15 To 20 Knots, Increasing To 20 To 25 Knots After Midnight. Seas 6 To 8 Feet, Occasionally To 10 Feet. Wave Detail: Northeast 7 Feet At 7 Seconds And East 4 Feet At 14 Seconds. Intracoastal Waters Rough. A Slight Chance Of Thunderstorms. A Chance Of Showers This Evening, Then Showers Likely After Midnight.
Wednesday...Tropical Storm Conditions Possible With Hurricane Conditions Also Possible. Northeast Winds 20 To 25 Knots, Increasing To 25 To 30 Knots In The Afternoon. Seas 7 To 9 Feet, Occasionally To 11 Feet. Wave Detail: Northeast 8 Feet At 8 Seconds And East 3 Feet At 13 Seconds. Intracoastal Waters Very Rough. Showers Likely With A Chance Of Thunderstorms In The Morning, Then Showers With A Chance Of Thunderstorms In The Afternoon.
Wednesday Night...Tropical Storm Conditions Expected With Hurricane Conditions Possible. East Winds 25 To 35 Knots, Increasing To 30 To 40 Knots After Midnight. Seas 8 To 10 Feet, Occasionally To 13 Feet, Building To 11 To 15 Feet, Occasionally To 18 Feet After Midnight. Wave Detail: East 14 Feet At 8 Seconds And East 3 Feet At 13 Seconds. Intracoastal Waters Extremely Rough. Showers With A Chance Of Thunderstorms.
Thursday...Tropical Storm Conditions Expected With Hurricane Conditions Possible. Northeast Winds 35 To 45 Knots With Gusts Up To 55 Knots. Seas 13 To 18 Feet, Occasionally To 23 Feet, Building To 16 To 19 Feet, Occasionally To 24 Feet In The Afternoon. Wave Detail: East 19 Feet At 10 Seconds And Northeast 4 Feet At 7 Seconds. Intracoastal Waters Extremely Rough. Showers With A Chance Of Thunderstorms.
Thursday Night...Tropical Storm Conditions Possible. Northeast Winds 30 To 40 Knots, Becoming North 25 To 35 Knots After Midnight. Seas 14 To 19 Feet, Occasionally To 24 Feet. Wave Detail: Northeast 19 Feet At 11 Seconds And Southeast 4 Feet At 10 Seconds. Intracoastal Waters Extremely Rough. A Chance Of Showers And Thunderstorms.
Friday...Northeast Winds 25 To 30 Knots. Seas 13 To 18 Feet, Occasionally To 23 Feet, Subsiding To 12 To 16 Feet, Occasionally To 20 Feet In The Afternoon. Wave Detail: Northeast 17 Feet At 12 Seconds. Intracoastal Waters Very Rough. A Slight Chance Of Thunderstorms In The Morning. A Slight Chance Of Showers.
Friday Night...Northeast Winds 20 To 25 Knots, Diminishing To 15 To 20 Knots After Midnight. Seas 10 To 14 Feet, Occasionally To 18 Feet, Subsiding To 9 To 12 Feet, Occasionally To 15 Feet After Midnight. Intracoastal Waters Rough.
Saturday...Northeast Winds 10 To 15 Knots. Seas 7 To 10 Feet, Occasionally To 13 Feet. Intracoastal Waters A Moderate Chop.
Saturday Night...Northeast Winds 10 To 15 Knots, Diminishing To 5 To 10 Knots After Midnight. Seas 5 To 8 Feet, Occasionally To 10 Feet. Intracoastal Waters A Moderate Chop.
Sunday...Northeast Winds 5 To 10 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet. Intracoastal Waters Light Chop.
Sunday Night...South Winds 5 To 10 Knots, Becoming Southwest After Midnight. Seas 4 To 5 Feet, Occasionally To 6 Feet. Intracoastal Waters Light Chop. Winds And Waves Higher In And Near Thunderstorms.
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Area Forecast Discussion
National Weather Service Jacksonville FL
736pm EDT Tuesday Oct 8 2024

Near Term
Issued at 340pm EDT Tuesday Oct 8 2024

Shower activity remains limited this afternoon as a drier airmass from the north clashes with tropical moisture south of a stalled front well ahead of Hurricane Milton. Satellite estimates of PWATs well under one inch are noted northwest of a line from about Nassau County southwestward across Gilchrist County as the front has made it about as far south as the I-10 corridor. Showers will continue into the night tonight for southeastern areas as the approach of Hurricane Milton from the southwest pushes tropical moisture further north. The front will therefore lift northward across the area into the morning hours as outer rain bands from Milton work their way into the rest of the area from south to north towards sunrise. However, more significant impacts are not anticipated during the near term period. Breezy onshore conditions will continue through this evening and into overnight hours however, with winds in the 10-20mph range with gusts to near 25-30mph. Towards sunrise, expecting these conditions to start to pick up, especially by the coast and over the St. Johns River Basin. Slightly more mild tonight with temperatures in the mid to upper 60s north and west and low to mid 70s south and east.

.SHORT TERM... (Wednesday through Thursday night) Issued at 340pm EDT Tuesday Oct 8 2024

Hurricane Milton will continue on its trek towards the west coast of Florida through Wednesday, making landfall during the overnight hours into Thursday. Milton will move across the Florida peninsula through Thursday and begin to exit off towards the Atlantic by the overnight hours from Thursday into Friday. For local impacts, the outer rain bands from Milton will begin to trickle into the area through the day on Wednesday, with Tropical Storm forced gusts expected to arrive by Wednesday morning, with Tropical Storm force sustained winds expected for most of NE FL and along the SE GA coast, with frequent hurricane force gusts highly possible for our north central Florida counties and along the St. Johns River basin. In addition to the wind threat, the threat of flash flooding is possible as Milton is expected to bring 5-12 inches of rain, with locations in north central Florida (Marion, Putnam, Flagler) as well as St. Johns county likely to see the greatest total of rainfall for NE FL and SE GA. Coastal locations as well as along the St. Johns River can expect to see storm surge of 3 to 5 feet and 2 to 4 feet respectively.

Milton will begin to move offshore to the Atlantic during the overnight hours on Thursday night, gusty conditions and showers along coastal locations will be possible through the night.

Long Term
(Friday through next Tuesday) Issued at 340pm EDT Tuesday Oct 8 2024

High pressure will build into the area after Milton's exit off towards the Atlantic. Some lingering showers along coastal locations in NE FL, from Duval south towards Flagler, will be possible during the morning hours, with chances diminishing through the day on Friday. By the weekend high pressure stationed over the area will allow for a dry weather pattern to settle into the area. A dry cold front will begin to move into the area by the upcoming work week, keeping Probability of Precipitation near nil.

Marine
Issued at 340pm EDT Tuesday Oct 8 2024

A Hurricane Warning for the Florida waters and a Tropical Storm Watch for the Georgia waters currently in effect as Hurricane Milton is expected to move east across the Florida peninsula late Wednesday night. Increasing rain chances with numerous to widespread rainbands are expected to occur by Wednesday morning and continue into Thursday morning. Tropical storm force winds could begin as early as Wednesday afternoon with hurricane force winds possible Wednesday night. Strong winds will still continue in the northwest quadrant of Milton into Thursday night as to pulls away from the east coast. Strong north winds and very rough seas are expected to continue on Friday.

Rip Currents
High Risk of Rip Currents through the rest of the week as Hurricane Milton nears the area.

Hydrology
Issued at 340pm EDT Tuesday Oct 8 2024

Storm Surge Warning is in effect for the northeast Florida coast and St Johns river, with SE GA coastal locations remaining in a Storm Surge Watch, for increasing confidence in life threatening storm surge as Milton makes landfall Wednesday evening near the west central Florida coast. Storm surge inundation is possible as Milton moves from the west central Florida coast across the Florida peninsula with inundation amounts up to 3 to 5 ft along the coast and up to 2-4 ft in the St Johns River.

Rivers:

SE GA: Major river flooding is ongoing along the Alapaha River in Statenville and will continue through Wednesday night. The Altamaha river at Charlotteville, Baxley and Doctortown was falling from crests in Minor flood stage with the lower Altamaha River in Minor flood stage at Everett City nearing a crest just below Moderate Flood stage mid-week. The Satilla is expected to rise into Minor stage later today.

NE FL: There is an increasing risk of river flooding at NE FL rivers due to Milton's rainfall footprint mid-week, include Black Creek and the upper Santa Fe. As flood waters travel down the Suwannee River, backwater flooding up the lower Santa Fe including at Three Rivers Estates will rise from Minor flood stage toward Moderate flood stage late this week. The Southeast River Forecast Center started to include 72 hour rainfall forecasts into the river models (typically only 48 hrs of rainfall) to assist with Milton preparations. Local river interests, please continue to routinely monitor river forecasts over the coming days, especially for our quickly responding rivers including the Black Creek basin.

NOAA Jacksonville FL Office: Watches - Warnings - Advisories
FL...Tropical Storm Warning for FLZ021-023-024-030-031-035-124-125- 132-136-225-232-236-322-325-422-425-522.

Hurricane Warning for FLZ033-038-133-137-138-140-237-240-340.

Flood Watch through Thursday afternoon for FLZ021-023-024-030- 031-033-035-038-124-125-132-133-136>138-140-225-232-236-237- 240-322-325-340-422-425-522.

Hurricane Watch for FLZ024-124-125-132-225-232-325-425.

Storm Surge Warning for FLZ033-124-125-132-133-137-138-325.

Tropical Storm Watch for FLZ120-220.

GA...Tropical Storm Warning for GAZ154-166.

Flood Watch through Thursday afternoon for GAZ153-154-165-166- 264-350-364.

Storm Surge Warning for GAZ154-166.

Tropical Storm Watch for GAZ136-152-153-165-264-364.

AM...Tropical Storm Warning for AMZ450-470.

Hurricane Warning for AMZ452-454-472-474.