Area Forecast Discussion
Issued by NWS Miami, FL
Issued by NWS Miami, FL
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069 FXUS62 KMFL 081644 AFDMFL Area Forecast Discussion National Weather Service Miami FL 1244 PM EDT Wed May 8 2024 ...New SHORT TERM, AVIATION, MARINE, BEACHES, FIRE WEATHER... .SHORT TERM... (Rest of today through Thursday) Issued at 1237 PM EDT Wed May 8 2024 An expansive mid level ridge centered over the southwestern Gulf of Mexico will continue to build eastward towards South Florida through the rest of this afternoon and into Thursday while high pressure at the surface remains in place over the western Atlantic. With a northwesterly wind flow aloft, a drier air mass will push into the region this afternoon heading into Thursday. This will keep the chances of showers and storms very limited, however, there may be just enough lingering lower level moisture across the Lake Okeechobee region to support an isolated shower or storm where the sea breezes interact late this afternoon. Any shower or storm that does develop will be short lived and will quickly diminish after sunset due to loss of diurnal heating. Low temperatures tonight will generally range from the upper 60s across the Lake Okeechobee region to the mid to upper 70s across the east coast metro areas. With many areas seeing a good deal of sunshine on Thursday, the heat will return as high temperatures soar into the upper 80s and lower 90s across the coastal areas while the interior sections rise into the mid to upper 90s. Heat index values may reach the triple digits especially across interior portions of Southwest Florida in the afternoon on Thursday. && .LONG TERM... (Thursday night through Tuesday) Issued at 303 AM EDT Wed May 8 2024 As we wrap up the week, the surface ridge axis will remain sitting over South FL allowing for mostly sunny and dry conditions on Friday. The warming trend will to continue with widespread 90 degree high temperatures across the region. Some inland portions of South Florida could see temperatures reach the upper 90s. The heat indices will approach the upper 90s into low 100s, especially for the inland regions of the eastern counties. The next frontal boundary will move across the southeastern United States late Friday as a Canadian upper level low and trough make their way into the eastern CONUS. With increasing moisture, it will lead to our next opportunity for showers and thunderstorm activity on Saturday. However, the front is expected to weaken as it progresses across the FL Peninsula. Therefore, current models are not forecasting much activity and rainfall associated with this front as it moves south and settles across South FL through the weekend. The EURO ensemble & Canadian are showing the most confidence in rainfall with 30-50% chance of rain across land and the Atlantic waters with less than 0.10" expected. Low confidence in specifics at the moment due to varying forecasts between the models. Temperatures will cool slightly with the additional cloud cover and rainfall. However, Saturday appears it will be more of a transition day where the temperatures could again reach well into the 90s, most likely over the east coast metro. With heat indices approaching 100 again, caution needs to be taken when spending time outdoors with heat safety measures in place. When looking further into the extended outlook, temperatures continue to remain above normal, in the 90s, with more active weather to begin the start of the new week. && .AVIATION... (18Z TAFS) Issued at 1237 PM EDT Wed May 8 2024 VFR conditions will prevail throughout the forecast period. Southeast winds ranging between 10 and 15 kts this afternoon will gradually become light and variable as the evening progresses. At KAPF, southwest winds will continue this afternoon before diminishing this evening. && .MARINE... Issued at 1237 PM EDT Wed May 8 2024 A moderate to fresh southeasterly wind flow will continue across the Atlantic waters through tonight. These winds will gradually become more southerly on Thursday and then southwesterly on Friday as a frontal boundary approaches the region. Across the Gulf, moderate southeasterly wind flow tonight will also gradually become more south to southwesterly heading towards the end of the week. The chances of showers and thunderstorms will increase during the first part of the weekend as a frontal boundary moves closer to the region. && .BEACHES... Issued at 1237 PM EDT Wed May 8 2024 A high risk of rip currents will continue across the Palm Beaches through Thursday while a moderate risk of rip currents remains in place across the beaches of Broward and Miami Dade Counties. && .FIRE WEATHER... Issued at 1237 PM EDT Wed May 8 2024 As a drier air mass filters into the region, minimum relative humidity values each afternoon through the rest of the week could range between 30 and 35 percent over the interior portions of South Florida. This could lead to enhanced fire weather conditions across these areas. && .PRELIMINARY POINT TEMPS/POPS... Miami 76 91 75 92 / 0 0 0 0 West Kendall 74 91 72 94 / 0 0 0 0 Opa-Locka 75 91 74 94 / 0 0 0 0 Homestead 75 89 74 91 / 0 0 0 0 Fort Lauderdale 76 89 75 91 / 0 0 0 10 N Ft Lauderdale 75 90 75 92 / 0 0 0 10 Pembroke Pines 75 90 75 95 / 0 0 0 10 West Palm Beach 72 92 73 94 / 0 0 0 10 Boca Raton 75 89 74 94 / 0 0 0 10 Naples 74 89 76 89 / 10 0 0 0 && .MFL WATCHES/WARNINGS/ADVISORIES... FL...High Rip Current Risk through Thursday evening for FLZ168. AM...None. GM...None. && $$ SHORT TERM...CWC LONG TERM....Simmons AVIATION...CWC