Area Forecast Discussion
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
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364 FXUS62 KJAX 102234 AFDJAX Area Forecast Discussion National Weather Service Jacksonville FL 634 PM EDT Fri May 10 2024 ...New AVIATION... .SHORT TERM... (Saturday through Sunday night) Issued at 313 AM EDT Fri May 10 2024 The cold front will have essentially cleared the region by the start of Saturday, with weak high pressure building in throughout the day. The pressure gradient behind the front will not be particularly strong, and therefore winds will not really increase diurnally, and in fact may subside a bit throughout the day. The more northerly component with the wind should allow a bit of a sea breeze to develop, though will likely not penetrate much further inland than the I-95/St. Johns River corridor. Otherwise, a mostly sunny and seasonably warm day, near to slightly above 80 north and upper 80s to near 90 south, dropping into the upper 50s to low/mid 60s Saturday Night. Broad high pressure moves more overhead on Saturday Night and through Sunday, which will persist fair weather and light winds to end the weekend with just some high clouds starting to fill in overhead. A sea breeze will develop once again with the light winds during the afternoon, with temps topping out in the 80s before the boundary moves across eastern areas. More cloud cover will result in a bit milder lows Sunday Night, generally 60s to near 70 by the coast and St. Johns River. && .LONG TERM... (Monday through Thursday) Issued at 313 AM EDT Fri May 10 2024 High pressure moves offshore Monday, with a much more unsettled pattern looking to take shape for most of this period. A frontal system approaches the area with a warm front passage on Monday, followed by the trailing cold front Tuesday and into Wednesday. The boundary looks to stall almost directly over the CWA around the Wednesday/Thursday time frame, with several shortwaves moving across the area and maintaining chances for showers and t`storms before more of a "kicker" front approaches towards the end of the week. Temperatures start this period near to slightly below average with the unsettled weather, then towards near to slightly above average by Wednesday/Thursday. && .AVIATION... (00Z TAFS) Issued at 629 PM EDT Fri May 10 2024 Impulse moving ESE out of the Big Bend might bring some thunderstorms across or just south of KGNV between 11/01 to 11/05. The cold front dropping south could kick up a few showers for the other fields between 11/04 at KSSI to the north and 11/09 at KSGJ in the south. Winds will vary between 240-360 degrees through the period with 15 to 30 kt gusts through 11/02. Sustained winds will remain at 5 to 10 kt all night at all fields. && .MARINE... Issued at 313 AM EDT Fri May 10 2024 Offshore Southwest to West flow will remain at SCEC (Small Craft Exercise Caution) levels (15-20 knots) ahead of the cold frontal passage Today into this evening with the main marine hazard with strong to severe storms with damaging wind threat impacting the waters in several waves through this evening. Winds shift to the North at SCEC levels after midnight tonight behind the cold frontal passage and spread across the local waters. These winds become onshore/NE on Saturday and weaken to 10-15 knots as the weak high pressure ridge builds over the waters for the weekend with weak pressure gradient and No headlines expected with local sea breezes during the afternoon hours. The old frontal boundary lifts back to the North as a warm frontal boundary on Monday and stalls across the local waters on Tuesday as several waves of low pressure track along this feature. Increasing SE winds on Monday to possible Small Craft Advisory levels will shift to South and Southwest on Tuesday as the waves moving along the frontal boundary with a more unsettled pattern of showers and storms at times, with heavy rainfall and gusty wind threat at times early next week. Rip Currents: Low to Moderate risk of rip currents expected Today through the weekend with surf/breakers around 2 feet, before onshore/SE flow increases on Monday with a potential for solid Moderate to High Risk of rip currents. && .PRELIMINARY POINT TEMPS/POPS... AMG 60 82 59 84 / 0 0 0 0 SSI 65 79 64 83 / 10 0 0 0 JAX 65 84 61 85 / 10 0 0 0 SGJ 68 83 64 85 / 20 0 0 0 GNV 66 87 60 87 / 20 0 0 0 OCF 68 89 62 88 / 30 0 0 0 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...None. GA...None. AM...None. && $$