Area Forecast Discussion
Issued by NWS Miami, FL
Issued by NWS Miami, FL
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866 FXUS62 KMFL 031345 AFDMFL Area Forecast Discussion National Weather Service Miami FL 945 AM EDT Wed Jul 3 2024 ...New UPDATE... .UPDATE... Issued at 939 AM EDT Wed Jul 3 2024 Quiet and mainly sunny conditions prevail across South Florida this morning. It`s going to be a hot day as it`s only 9:30 AM and heat index values are already climbing into the lower 100s. A Heat Advisory remains in effect for our Broward, Miami Dade, and Collier County through tomorrow evening. && .SHORT TERM... (Today through Thursday) Issued at 234 AM EDT Wed Jul 3 2024 Stout mid-level ridging (~594 dam) will continue to expand across the southeastern United States through the short term as surface highs build inland from the western Atlantic and the Gulf of Mexico. Easterly-southeasterly winds will prevail during this period, with near-climo moisture values in place on Wednesday (PWAT values between 1.7-1.9 inches). This regime will support the development of scattered showers and thunderstorms over interior and southwestern FL during the late afternoon hours as the sea breezes develop and meet inland. Drier mid-level air could filter in over the area on Thursday along Hurricane Beryl`s northern flank as the system approaches the Yucatan peninsula. This dry air intrusion could help inhibit widespread convective development across the region, with isolated to scattered shower and thunderstorm coverage (PoPs ~50-60%) over the interior and southwest FL during the afternoon and evening. Temperatures each day will generally range from the upper 80s along the immediate East Coast to the low 90s across interior and southwest FL. The corresponding heat indices could climb into the 105-110 degree F range across southern-most portions of the peninsula during peak daytime heating hours; as a result, a Heat Advisory has been issued for Miami-Dade, Broward, mainland Monroe and Collier counties starting at 10AM today through 8pm Thursday. Overnight temperatures will remain warm, providing little relief from the heat, with lows in the mid 70s over the interior and in the low 80s along the immediate coastlines. && .LONG TERM... (Thursday night through Tuesday) Issued at 234 AM EDT Wed Jul 3 2024 The aforementioned ridging will hold over the area through Friday-Saturday, flattening out over the weekend as a mid-level trough develops over the Great Lakes region. This will support generally with easterly to southeasterly winds prevailing through the start of the weekend, becoming more southerly as we start the new week. Chances for shower and thunderstorm development each afternoon will be driven by the sea breezes, with convection initiating over the local waters and the East Coast late each morning, shifting towards the interior and West Coast in the afternoon and early evening. Models suggest a surge of moisture could approach the region over the weekend, thus enhancing the chances for heavy rainfall and higher coverage on Sunday and Monday. Temperatures throughout the period will remain warm, with high temperatures reaching the lower 90s across most areas. Heat index values may range between 105 and 110 during the late morning and afternoon hours. However, there is low confidence regarding persistence and thus continuous monitoring will need to determine the potential need for any heat-related products. && .AVIATION... (12Z TAFS) Issued at 713 AM EDT Wed Jul 3 2024 Scattered showers and a few thunderstorms will be possible near the east coast terminals through the early afternoon, with the threat of storms then shifting towards KAPF later this afternoon. Winds will generally be easterly around 10 to 15kts during the day, except at KAPF where a shift to the W-NW is anticipated this && .MARINE... Issued at 234 AM EDT Wed Jul 3 2024 Generally light easterly-southeasterly will prevail across local waters through the end of the week as ridging prevails. Seas will remain in the 1-3 ft range. Scattered showers and thunderstorms could develop each afternoon, resulting in locally higher winds and seas. && .BEACHES... Issued at 234 AM EDT Wed Jul 3 2024 A moderate risk of rip currents is forecast for the east coast beaches through Thursday as moderate easterly (onshore) flow prevails. && .PRELIMINARY POINT TEMPS/POPS... Miami 91 80 92 80 / 40 10 40 10 West Kendall 91 79 92 78 / 40 10 40 10 Opa-Locka 92 80 92 80 / 40 10 40 10 Homestead 91 80 91 80 / 40 10 40 10 Fort Lauderdale 89 81 89 80 / 40 10 30 10 N Ft Lauderdale 90 81 91 81 / 40 10 30 10 Pembroke Pines 93 80 94 80 / 40 10 40 10 West Palm Beach 91 80 92 78 / 40 10 30 10 Boca Raton 91 80 91 79 / 40 10 30 10 Naples 94 77 94 79 / 80 30 60 10 && .MFL WATCHES/WARNINGS/ADVISORIES... FL...Heat Advisory until 8 PM EDT Thursday for FLZ069>075-172>174. AM...None. GM...None. && $$ SHORT TERM...ATV LONG TERM....ATV AVIATION...Rizzuto