St. Augustine to Flagler Beach, FL Out 20 NM Marine Forecast
| Tonight...South Winds 5 To 10 Knots. Seas 3 To 4 Feet With A Dominant Period 9 Seconds. Intracoastal Waters Light Chop. |
| Thursday...Southwest Winds 5 To 10 Knots, Becoming Southeast In The Afternoon. Seas Around 3 Feet With A Dominant Period 11 Seconds. Intracoastal Waters Light Chop. |
| Thursday Night...Southeast Winds 5 To 10 Knots. Seas 2 To 3 Feet With A Dominant Period 11 Seconds. Intracoastal Waters Light Chop. |
| Friday...East Winds 5 To 10 Knots, Increasing To 10 To 15 Knots In The Afternoon. Seas 2 To 3 Feet With A Dominant Period 10 Seconds. Intracoastal Waters A Moderate Chop. |
| Friday Night...East Winds Around 15 Knots. Seas 3 To 4 Feet With A Dominant Period 7 Seconds. Intracoastal Waters A Moderate Chop. |
| Saturday...East Winds 10 To 15 Knots. Seas 4 To 5 Feet With A Dominant Period 7 Seconds. Intracoastal Waters A Moderate Chop. |
| Saturday Night...East Winds Around 15 Knots. Seas 4 To 5 Feet With A Dominant Period 7 Seconds. Intracoastal Waters A Moderate Chop. |
| Sunday...East Winds 10 To 15 Knots. Seas 4 To 5 Feet. |
| Sunday Night...Southeast Winds 10 To 15 Knots. Seas 4 To 5 Feet. |
| Monday...Southeast Winds 10 To 15 Knots. Seas 3 To 4 Feet. |
| Monday Night...Southeast Winds 5 To 10 Knots. Seas 3 To 4 Feet. |
| Area Forecast Discussion National Weather Service Jacksonville FL 221pm EDT Wednesday April 24 2024 ...New NEAR TERM, SHORT TERM, LONG TERM, Marine IRE WEATHER... Near Term (through tonight) Surface high pressure remains dominant while a shortwave dives across the area aloft. Despite the upper disturbance, a very dry airmass aloft (JAX RAOB (Radiosonde Observation or Upper-Air Observation) average a 4% relative in the mid levels) will continue fair weather conditions overnight. Given the dry airmass and lack of recent rain, fog development is not expected and if any develops it should be very shallow. Temperatures will follow very closely to typical climate values for late April with highs this afternoon in the upper 70s and low 80s and temps tonight falling to the upper 50s inland and low/mid 60s at the coast. For the latest NE FL and SE GA Daily Key Messages please visit: https://www.weather.gov/media/jax/briefings/nws-jax-briefing.pdf .SHORT TERM...(Thursday through Friday night) A weak cold front approaches SE GA Thursday morning and slowly pushes south to the FL/GA line by the evening hours. Conditions look to be too dry to produce any precipitation. Expect clear skies in the morning with increasing cloud coverage in the afternoon. Temperatures will be in the mid to upper 80s inland with coastal temperatures staying slightly cooler. Friday, the weak cold front shifts north and east a bit so that it drapes across SE GA once again and will dissipate by the evening. Conditions are still too dry to produce any precipitation. Winds will begin to increase in the afternoon as pressure gradients begin to tighten up between a low pressure out west and the high pressure off the northeast coast. Temperatures inland will be in the mid 80s with temperatures in the low to mid 80s closer to the coast. Long Term (Saturday through next Wednesday) Predominantly dry conditions are expected for the forecast period as high pressure ridging at the surface dominate the region. Winds will be breezy Saturday and Sunday due to tightening pressure gradients and easterly winds. Monday to Thursday, as the high pressure makes its way down the east coast and settles off the coast of the Carolinas, it will allow the seabreeze to make its way well inland each afternoon. Temperatures for the weekend will be in the low to mid 80s, staying slightly cooler at the coast. Temperatures will steadily increase into the 90s by mid week. Marine High pressure will dominate the waters through tonight with a sea breeze developing near shore during the afternoon and evening hours. A weak trough/front will approach the waters on Thursday with high pressure building back in through the remainder of the forecast period. Onshore flow will strengthen Friday and build seas through the weekend. Rip Currents Moderate risk of rip currents will be present through the end of the week with risk increasing to High this weekend as onshore winds and surf increase. Fire Weather A high pressure ridge across northeast FL will push southward as a weak frontal boundary begins to move into southeast GA Thursday morning. The front will stall Thursday evening just north of the FL/GA line and dissipate by Friday. Today, minRH values range from 30-35% inland with higher values along the coast. West to southwest winds expected around 5 mph, but breezier southeast winds of 10-15 mph are expected along the coast due to the sea breeze. Thursday, calm variable winds expected with the sea breeze making its way in at the coast from the east to southeast near 10 mph in the afternoon. Friday through the weekend, most locations will see prevailing east to southeast winds at 10-15 mph with patchy high dispersions area wide. NOAA Jacksonville FL Office: Watches - Warnings - Advisories FL...None. GA...None. AM...None. |
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