Sunrise 6:53 AM   Sunset 7:56 PM Moonrise 2:27 PM   Moonset 3:18 AM

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AMZ454 Expires:202404182115;;938601 Fzus52 Kjax 180545 Cwfjax
coastal waters forecast for northeast florida/southeast georgia national weather service jacksonville fl 145 am edt Thu apr 18 2024
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.
amz450-452-454-182115- 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- 145 am edt Thu apr 18 2024
Today - South winds around 10 knots, becoming southeast in the afternoon. Seas 2 to 3 feet with a dominant period 9 seconds. Intracoastal waters a moderate chop. Tonight - South winds 10 to 15 knots, becoming southwest 5 to 10 knots after midnight. Seas 2 to 3 feet with a dominant period 9 seconds. Intracoastal waters a moderate chop. Friday - West winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet with a dominant period 8 seconds. Intracoastal waters a moderate chop. Friday night - South winds 10 to 15 knots, becoming southwest 5 to 10 knots after midnight. Seas 2 to 3 feet with a dominant period 8 seconds. Intracoastal waters a moderate chop. Saturday - Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 2 to 3 feet with a dominant period 8 seconds. Intracoastal waters light chop. A slight chance of showers and Thunderstorms in the afternoon. Saturday night - Southwest winds 5 to 10 knots, becoming west after midnight. Seas 2 to 3 feet with a dominant period 8 seconds. Intracoastal waters light chop. Sunday - Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 2 to 3 feet. A slight chance of rain and Thunderstorms in the afternoon. Sunday night - West winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers with a slight chance of Thunderstorms. Monday - Northwest winds around 10 knots, becoming north in the afternoon. Seas 2 to 3 feet. A chance of showers with a slight chance of Thunderstorms. Monday night - North winds 10 to 15 knots. Seas 2 to 3 feet.
winds and waves higher in and near Thunderstorms.

AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 145 Am Edt Thu Apr 18 2024
Synopsis -
high pressure ridge axis will continue over the local waters today, then sink southward on Friday. A cold front will move southeast to near the ga/fl line on Saturday and stall through the rest of the weekend. This front will then push southeast through the local waters on Monday.
Gulf stream -
the approximate location of the west wall of the gulf stream as of apr 13, 2024 at 1200 utc - .
69 nautical miles east northeast of flagler beach. 73 nautical miles east of saint augustine beach. 85 nautical miles east southeast of jacksonville beach. 103 nautical miles east southeast of st simons island.
this data courtesy of the naval oceanographic office.

FXUS62 KJAX 180512 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 112 AM EDT Thu Apr 18 2024

New AVIATION

UPDATE
Issued at 811 PM EDT Wed Apr 17 2024

For the latest NE FL and SE GA Daily Key Messages please visit: https:// www.weather.gov/media/jax/briefings/nws-jax-briefing.pdf

Going forecast is on track with no significant changes planned.

NEAR TERM
Issued at 400 PM EDT Wed Apr 17 2024

For the latest NE FL and SE GA Daily Key Messages please visit: https:// www.weather.gov/media/jax/briefings/nws-jax-briefing.pdf

Dry weather and initially clear to partly cloudy skies will continue through the afternoon with cloud cover increasing tonight as high pressure ridging moves southward and prevailing flow shifts to become more out of the west. High temperatures this afternoon will reach up into the mid to upper 80s over inland areas and in the upper 70s and lower 80s along the coastline.
Overnight low temperatures will drop down into the upper lower to mid 60s for most inland areas and in the mid to upper 60s along the shoreline.

SHORT TERM
(Thursday through Friday night)
Issued at 400 PM EDT Wed Apr 17 2024

Mostly quiet weather pattern expected on Thursday as ridging aloft will keep dry air over the area. During the overnight hours, fog development will be possible from the Suwannee Valley region towards the I75 corridor as moisture from the Gulf treks into the region. By the afternoon showers and storms will be possible along the Altamaha River Basin in southeast Georgia as a cold front passes to the north of our area.

Daytime temperatures in the lower 90s for most inland locations, with coastal locations expected to remain in the upper 80s thanks to the Atlantic seabreeze on both Thursday and Friday. Lows will be in the low to mid 60s across the area on Thursday and Friday nights.



LONG TERM
(Saturday through next Wednesday)
Issued at 400 PM EDT Wed Apr 17 2024

Some showers and storms may develop during the afternoon hours over southeast Georgia on Saturday ahead of a cold front moving in from the northwest. Come Sunday, the cold front will begin its trek across southeast Georgia. This will bring an increase in showers and storms across southeast Georgia and as far south as the I-10 corridor in northeast Florida on Sunday afternoon. Eventually showers and chances of storms will increase for the rest of northeast Florida as the front continues to move south through the area into Monday. By Tuesday, high pressure will begin to build, bringing a dry pattern to the area.

Temperatures will reach into the lower 90s for inland locations as coastal locations will remain near the upper 80s on Saturday.
Temperatures are expected to drop from the 90s to mostly the lower to mid 80s on Sunday as the cold front moves through the area, by Monday temperatures are expected to cool further before trending upward again by Tuesday as high pressure builds.

LONG TERM
(Saturday through next Wednesday)
Issued at 400 PM EDT Wed Apr 17 2024

Some showers and storms may develop during the afternoon hours over southeast Georgia on Saturday ahead of a cold front moving in from the northwest. Come Sunday, the cold front will begin its trek across southeast Georgia. This will bring an increase in showers and storms across southeast Georgia and as far south as the I-10 corridor in northeast Florida on Sunday afternoon. Eventually showers and chances of storms will increase for the rest of northeast Florida as the front continues to move south through the area into Monday. By Tuesday, high pressure will begin to build, bringing a dry pattern to the area.

Temperatures will reach into the lower 90s for inland locations as coastal locations will remain near the upper 80s on Saturday.
Temperatures are expected to drop from the 90s to mostly the lower to mid 80s on Sunday as the cold front moves through the area, by Monday temperatures are expected to cool further before trending upward again by Tuesday as high pressure builds.

AVIATION
(06Z TAFS)
Issued at 106 AM EDT Thu Apr 18 2024

Fairly thick cirrus cloud deck will continue to overspread all TAF sites through the overnight hours and likely will prevent any sites from having any significant fog formation. Otherwise high cloud deck will slowly disperse through the morning hours with East Coast sea breeze pushing through the coastal TAF sites of SSI/SGJ/CRG in the 16-18Z time frame from the SE around 10 knots.
Still not enough moisture for any rainfall at the TAF sites, and any low level diurnal Cu fields in the 3500-5000 ft range should remain FEW-SCT through the afternoon hours.

MARINE
Issued at 400 PM EDT Wed Apr 17 2024

High pressure ridge centered to the east will extend across area through Thursday. The high pressure ridge will sink to the south Friday. A cold front will sink near the GA/FL line over the weekend and stall. This front will then move southeast of the area early next week.

Rip Currents: Breezy onshore winds and building seas will create a high-end moderate rip current risk at area beaches today. A developing long period easterly ocean swell arrives at area beaches beginning on Thursday, keeping a moderate risk in place from Thursday through the upcoming weekend.

CLIMATE
Issued at 247 AM EDT Wed Apr 17 2024

Max temps around 90 degrees can be expected at local climate sites on Friday 4/19 and Saturday 4/20 and will be close record levels.

Record High Record High Average First Date Friday 4/19 Saturday 4/20 to Reach >= 90F

Jacksonville, FL (JAX) 92/1995 92/1995 April 25 Craig Field, FL (CRG) 91/2013 91/2002 April 22 Gainesville, FL (GNV) 94/2011 94/1892 April 21 Alma, Georgia (AMG) 91/1968 93/1968 May 2

PRELIMINARY POINT TEMPS/POPS
AMG 65 91 67 91 / 0 10 10 30 SSI 65 85 67 86 / 0 10 10 20 JAX 64 91 65 92 / 0 10 0 10 SGJ 64 89 65 90 / 0 0 0 10 GNV 62 90 62 93 / 0 0 0 10 OCF 62 90 62 91 / 0 0 0 0

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

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