Altamaha Sound, GA to Fernandina Beach, FL 20 - 60 NM Marine Forecast
| Today...East Winds Increasing To Around 20 Knots. Seas Building To 5 To 7 Feet With A Dominant Period Of 7 Seconds. A Chance Of Showers. |
| Tonight...East Winds 20 To 25 Knots. Seas 6 To 8 Feet With A Dominant Period Of 7 Seconds. |
| Sunday...East Winds Around 20 Knots, Diminishing To Around 15 Knots During The Afternoon. Seas Subsiding To 5 To 6 Feet With A Dominant Period Of 7 Seconds. |
| Sunday Night...Southeast Winds 10 To 15 Knots. Seas 4 To 5 Feet With A Dominant Period Of 7 Seconds. |
| Monday...Southeast Winds 5 To 10 Knots. Seas 4 To 5 Feet With A Dominant Period Of 7 Seconds. |
| Monday Night...Southeast Winds 10 To 15 Knots. Seas Around 4 Feet With A Dominant Period Of 9 Seconds. |
| Tuesday...South Winds 5 To 10 Knots, Increasing To 10 To 15 Knots In The Afternoon. Seas 3 To 4 Feet. |
| Tuesday Night...South Winds 10 To 15 Knots. Seas 3 To 4 Feet. A Slight Chance Of Showers In The Evening. |
| Wednesday...South Winds 5 To 10 Knots. Seas 3 To 4 Feet. |
| Wednesday Night...South Winds 10 To 15 Knots. Seas Around 3 Feet. |
| Area Forecast Discussion National Weather Service Jacksonville FL 219am EDT Sat April 27 2024 Issued at 519pm EDT Fri April 26 2024 High pressure will be northeast of the region through Saturday. Weak inverted troughs are expected to develop in this pattern overnight and through Saturday, which will provide for convergent bands to develop over the waters, and move ashore. Typically these showers will weaken over land, as they move away from the source of convergence. Have increased precipitation chances at the coast overnight through Saturday, to account for these bands. The greatest chance will be over NE FL, based on expected location of troughing. Have seen light to moderate showers develop over the waters this afternoon in weak troughing, and even more convergence in troughing will be present for shower generation overnight into Saturday, hence the early update to reflect the greater chance for coastal showers. .SHORT TERM... (Saturday through Sunday night) Issued at 231pm EDT Fri April 26 2024 The main concern over the weekend will be beach hazards as surf builds and breezy onshore flow yields a High rip current risk at all the area beaches. A weak coastal trough over the local waters may push a few sprinkles into the immediate coast on Saturday morning but will be very isolated in nature. With the moistening onshore flow, skies will trend partly to mostly cloudy by Saturday, especially near the coast. Combination of increasing cloud cover and onshore flow will keeps highs in the low 80s inland while the coastal areas peak in the upper 70s to near 80 each day while overnight temps remain in the mild low/mid 60s. High pressure to the northeast will gradually sink southward and weaken allowing winds to relax through Sunday while trending southeasterly. Cloud cover will begin to scatter out with temperatures similar to Saturday with continued component of onshore flow. Long Term (Monday through next Friday) Issued at 231pm EDT Fri April 26 2024 Ridging forecast to initially hold steady through Monday before being flattened by a dampening upstream shortwave trough Tuesday. That feature will drag a surface cold front with it but as it weakens the front appears to stall generally to the northwest, extending the ongoing dry-spell likely through the latter end of next week when sea breeze showers may begin to be prevalent. Otherwise temperatures will trend above normal through next week with temperatures flirting with the 90s once again as southerly flow develops. Marine Issued at 231pm EDT Fri April 26 2024 A frontal boundary along the FL/GA line has stalled over the northeast Florida waters and will dissipate tonight. Meanwhile, strong high pressure off the northeast coast will wedge down the coastline beginning this afternoon, resulting in strengthening onshore winds and building seas. Small Craft Advisory conditions develop early Saturday for offshore waters making it to the inland waters by the afternoon and into Saturday night. Caution conditions prevailing elsewhere across our local waters. High pressure will then shift southward while gradually weakening late this weekend, becoming anchored off the southeastern seaboard for much of next week. Winds and seas will gradually diminish from Sunday afternoon through the early portions of the upcoming week. Rip Currents Moderate Rip current risk continue continues at SE GA beaches today while High Risk is in play at NE FL beaches. Increasing onshore winds and elevating surf will lead to High Risk of Rip Currents at all beaches through the weekend. Hydrology Issued at 414am EDT Fri April 26 2024 Water levels along lower portions of the Santa Fe River have crested, but Moderate flooding near the Three Rivers Estates gauge will continue through Saturday night, with water levels then gradually falling, but remaining in minor flood for much of next week. Water levels near the gauge at Hildreth on the lower Santa Fe will also gradually subside, with minor flooding expected to continue through at least Tuesday. Water levels are expected to fall below flood stage along upper portions of the Suwannee River near the gauge at Suwannee Springs early this morning. Minor flooding will otherwise continue along most of the lower Suwannee River through the weekend. NOAA Jacksonville FL Office: Watches - Warnings - Advisories FL...High Rip Current Risk through Sunday evening for FLZ124-125-133- 138. GA...None. AM...Small Craft Advisory from 2pm this afternoon to 5am EDT Sunday for AMZ454. Small Craft Advisory from 5am early this morning to 11am EDT Sunday for AMZ470-472-474. |
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