Area Forecast Discussion
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
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423 FXUS62 KJAX 262335 AFDJAX Area Forecast Discussion National Weather Service Jacksonville FL 735 PM EDT Thu Sep 26 2024 ...New AVIATION... .NEAR TERM... Issued at 147 PM EDT Thu Sep 26 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 Hurricane Helene is expected to make landfall along the big bend of FL this evening, then track to the north. Winds will subside greatly toward dawn as the system moves away. Precipitation chances will trail off quickly overnight as well. Lows will range from the lower 70s inland, to the upper 70s coast. For additional information on local impacts from Helene, please refer to the Hurricane Local Statement product, HLS. && .SHORT TERM... (Friday through Saturday night) Issued at 147 PM EDT Thu Sep 26 2024 The remnants of Helene will move well to the north northwest of the area during the day Friday, with a cold front extending from it, stretching down the east coast, and across central FL. Friday will largely be a dry day, except for a few showers and storms along the frontal boundary. Away from this boundary, sunshine will increase during the afternoon. Highs Friday will range from the mid 80s inland to the around 90 along the coast. The region will remain between the remnant tropical low well to the northwest, and frontal boundary to the southeast Friday night. This front will drift north into northern FL during the day Saturday. As the front moves back into area, precipitation chances will increase from south to north during the day Saturday. Lows Friday night and Saturday night will range from the mid 60s inland SE GA, to the mid 70s along the coast. Highs Saturday will generally range in the mid to upper 90s. && .LONG TERM... (Sunday through next Thursday) Issued at 147 PM EDT Thu Sep 26 2024 Cold frontal boundaries will affect the region through Wednesday, bringing chances for showers and storms. The front is expected to push to the south on Thursday, as high pressure builds to the northwest. The best chances for precipitation this period will be across NE FL. Temperatures will trend above normal through Wednesday, then trend near normal Thursday. && .AVIATION... (00Z TAFS) Issued at 724 PM EDT Thu Sep 26 2024 Hurricane Helene will move onshore along the Big Bend area and continue northward with Tropical Storm force winds affecting sites overnight and into Friday morning. Sustained winds of about 30 knots with gusts of up to 45 to 50 knots will build out of the southeast and shift to become more out of the south and southwest between 08z and 14z as Helene continues northward. Showers and thunderstorms will persist overnight, dispersing and moving out of the region by around 14z. Dry weather conditions are expected to develop on Friday following the Hurricane passage. && .MARINE... Hurricane Helene is expected to make landfall in the big bend region of FL this evening. Helene will quickly move north northwest of the area Tonight into Friday morning. Conditions will improve during the day on Friday, as remnants of the tropical system moves further away to the northwest. A frontal zone will near area through the weekend into early next week. Rip Currents: High through Friday && .PRELIMINARY POINT TEMPS/POPS... AMG 72 84 66 86 / 100 20 0 0 SSI 79 88 73 87 / 80 30 0 10 JAX 78 90 72 90 / 90 30 0 20 SGJ 78 91 74 89 / 70 30 10 30 GNV 75 87 71 88 / 90 30 10 20 OCF 76 88 74 88 / 90 40 20 30 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...Tropical Storm Warning for FLZ023-024-030-031-033-038-124-125- 132-133-136>138-140-225-232-237-240-325-425. Flood Watch through Friday morning for FLZ021-023-024-030-031- 033-035-038-120-124-125-132-133-136>138-140-220-225-232-236- 237-240-322-325-340-422-425-522. Hurricane Warning for FLZ021-035-120-220-236-322-340-422-522. Coastal Flood Advisory until 8 AM EDT Friday for FLZ033-038-132- 137. Coastal Flood Warning until 8 AM EDT Friday for FLZ124-125-133- 138-225-325. High Rip Current Risk through Friday evening for FLZ124-125-133- 138. High Surf Advisory until 4 PM EDT Friday for FLZ124-125-133-138. GA...Tropical Storm Warning for GAZ134>136-151>154-165-166-250-264- 350-364. Flood Watch through Friday morning for GAZ132>136-149-151>154- 162-163-165-166-250-264-350-364. Hurricane Warning for GAZ132-133-149-162-163. Coastal Flood Warning until 8 AM EDT Friday for GAZ154-166. High Rip Current Risk through Friday evening for GAZ154-166. High Surf Advisory until 4 PM EDT Friday for GAZ154-166. AM...Tropical Storm Warning for AMZ450-452-454-470-472-474. && $$