Area Forecast Discussion
Issued by NWS Miami, FL
Issued by NWS Miami, FL
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422 FXUS62 KMFL 131136 AFDMFL Area Forecast Discussion National Weather Service Miami FL 736 AM EDT Thu Jun 13 2024 ...New AVIATION... .SHORT TERM... (Today through Friday) Issued at 243 AM EDT Thu Jun 13 2024 The very wet and unsettled weather pattern will continue across the region today as a mid level shortwave slowly pushes into the northeastern Gulf of Mexico. At the surface, a broad area of low pressure along the stalled out frontal boundary to the north will gradually begin to lift northeastward off of the Northern Florida coastline and into the western Atlantic. This area of low pressure will slowly try to intensify as it moves northeastward. The moisture tail associated with this low will extend southwestward over the region for today. This will result in another day of multiple rounds of showers and thunderstorms across the area. Similar to yesterday, with plenty of deep layer moisture remaining in place as PWAT values remain at 2.5 inches or higher, multiple rounds of heavy and intense rainfall will be possible. With these repeated rounds of heavy rainfall potentially setting up over areas that saw considerable flooding yesterday, this will continue to create additional flood problems that are currently ongoing across the region. As the low starts to gain traction heading northeastward, hi- res guidance shows that another lull in activity may develop late Thursday night into Friday morning with loss of diurnal heating. Any break in the activity will be welcome as this will give any ongoing flooding a chance to start to recede. Heading into Friday, the mid level shortwave trough pushes further south into the Gulf of Mexico as well as South Florida. At the surface, the developing area of low pressure will push further to the northeast off of the Carolina coastline. Deep tropical moisture will continue to be funneled into South Florida along the south to southwesterly wind flow. The moisture tail associated with this area of low pressure will remain in place across South Florida allowing for the potential of another day of multiple rounds of showers and thunderstorms. Multiple rounds of heavy rainfall will continue especially during the afternoon hours which could once again create additional flooding across the already saturated area. In general, additional rainfall amount of 4 to 8 inches are possible across most areas through Friday evening. Some areas where the very heavy and intense rainfall rates set up could see locally higher amount of 10 inches or more during this time frame. Because of this, the Flood watch will remain in place across all of South Florida through Friday Evening. High temperatures will continue to be held down in the mid 80s across most areas on Thursday and Friday due to the increased cloud cover and rainfall across the region.&& .LONG TERM... (Friday night through Wednesday) Issued at 243 AM EDT Thu Jun 13 2024 This weekend: The surface low will remain off the Southeast CONUS on Saturday and will be pushing towards the northeast. Upper level troughing will still be the dominant synoptic feature over the area. As the aforementioned surface low continues to push to the northeast, surface flow across South Florida will remain southerly to start the weekend, but easterly flow will return by Sunday afternoon which will be the start of a return to normalcy. Modeled PWATs will still remain at or above 2 inches Saturday and Sunday, which is at or above the 90th percentile for this time of year. It is possible we remain in the `moisture tail` of the surface low through the weekend, with the most enhanced moisture draped across far southern portions of the area. Showers and storms are likely each day through the weekend before drier air finally begins to filter across the area on Monday. As the low continues to push further and further away from South Florida, the coverage of showers and storms is not expected to be as widespread or numerous as what we experienced earlier this week. Still, given the extremely wet conditions this week, the Flood Watch may need to be extended into the weekend. Early next week: Surface high pressure will build across the region again late Sunday into Monday which should return us to a more typical summertime easterly regime. This will allow the eastern sea breeze to progress relatively far inland, and should keep the east coast metro areas cooler each afternoon. This will also keep the best chances for showers and storms across interior South Florida and Southwest Florida each afternoon. Highs through the period will be in the upper 80s with heat indices in the upper 90s to lower 100s. With the return of the easterly regime, Southwest Florida will experience slightly warmer temperatures and heat indices each day.&& .AVIATION... (12Z TAFS) Issued at 733 AM EDT Thu Jun 13 2024 Generally VFR at all sites during the next few hours, but MVFR/IFR conditions could be possible for all terminals later this afternoon as a large band of SHRA/TSRA pushes through. Best timing for most terminals will be between 16-22Z, with TEMPOs currently in place for the 18-22 Z window. Generally southerly to southwesterly winds will prevail outside of any storms and storm outflows. && .MARINE... Issued at 243 AM EDT Thu Jun 13 2024 A moderate to fresh south to southwesterly wind flow will remain in place across the local waters through the end of the week. Seas across the Atlantic and Gulf waters will remain at 2 feet or less through Friday. Winds and seas could be locally higher in and around any shower or thunderstorm activity. && .PRELIMINARY POINT TEMPS/POPS... Miami 86 76 86 76 / 90 80 100 70 West Kendall 87 74 85 74 / 90 90 100 70 Opa-Locka 86 75 86 76 / 90 80 100 70 Homestead 88 75 86 76 / 90 90 100 70 Fort Lauderdale 86 75 85 76 / 100 90 100 70 N Ft Lauderdale 86 75 85 76 / 100 90 100 70 Pembroke Pines 86 75 85 76 / 100 90 100 70 West Palm Beach 86 74 86 74 / 100 70 100 70 Boca Raton 86 75 85 75 / 100 90 100 70 Naples 88 77 85 76 / 100 90 100 70 && .PRELIMINARY POINT TEMPS/POPS... Miami 86 76 86 77 / 90 90 100 70 West Kendall 87 73 86 74 / 90 90 100 70 Opa-Locka 86 76 86 76 / 90 90 100 70 Homestead 88 75 86 76 / 90 90 100 70 Fort Lauderdale 86 76 86 77 / 100 90 100 70 N Ft Lauderdale 86 76 86 76 / 100 90 100 70 Pembroke Pines 86 76 86 77 / 90 90 100 70 West Palm Beach 86 74 86 74 / 100 90 100 60 Boca Raton 86 75 86 76 / 100 90 100 70 Naples 86 77 86 77 / 100 90 100 80 && .MFL WATCHES/WARNINGS/ADVISORIES... FL...Flood Watch through Friday evening for FLZ063-066>075-168- 172>174. AM...None. GM...None. && $$ SHORT TERM...CWC LONG TERM....Rizzuto AVIATION...ATV