


Area Forecast Discussion
Issued by NWS
Issued by NWS
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371 FXUS62 KTAE 131413 AFDTAE Area Forecast Discussion National Weather Service Tallahassee FL 1013 AM EDT Sun Jul 13 2025 ...New UPDATE... .UPDATE... Issued at 1008 AM EDT Sun Jul 13 2025 No updates to the forecast were made this morning. The development of storms will likely be slightly later than usual and mostly in the later parts of the afternoon given the ridging in place. && .NEAR TERM... (Today and tonight) Issued at 128 AM EDT Sun Jul 13 2025 The main concerns today will be the heat and the chance of a stronger storm or two this afternoon. Upper level ridging will remain in place across the region today with light northerly flow providing a suppressed seabreeze pattern. This is expected to allow temperatures to reach into the mid to upper 90s across most inland areas today. Dewpoints will mix out somewhat, but blending in some of the lower dewpoint guidance still yields heat index values near 108 across our Florida counties and the first row of Georgia counties, so we`ll go with a heat advisory in those areas for this afternoon. In terms of thunderstorms chances, although the best chances will be confined to Florida along the suppressed sea breeze with light northerly flow, DCAPE values are at least moderate today, so any storms that do develop could be on the strong side with gusty winds. For tonight, conditions will remain quite muggy with overnight lows in the mid 70s for most inland locations and upper 70s to near 80 along the coast. && .SHORT TERM AND LONG TERM... (Monday through Saturday) Issued at 128 AM EDT Sun Jul 13 2025 KEY MESSAGES: -Heat Advisories are likely needed again, especially across our Florida and southern Georgia Counties, Monday and Tuesday. Heat indices will generally top out between 105 to 112 across the region with the highest readings expected across Florida. -Turning wetter for the second half of the week. A plume of moisture arrives by mid-week, helping to increase rain chances and decrease temperatures. -Tropics: The plume of moisture is thanks to a broad area of low pressure forecast to move westward across the northern Gulf. There is a low (20%) chance of tropical development over the next 7 days. Aloft, an H5 ridge overhead will continue to lead to above normal temperatures. 850mb temperatures of 21C to 23C means daytime highs will be pushing the upper 90s to near 100 degrees again Monday and Tuesday; the highest readings are currently forecast across our northern Georgia counties where drier air takes hold. By mid-week, a piece of vorticity will break off from the mean flow off the Carolina coastline and sag southwest to west across Florida. This will lead to precipitable water values (PWATs) nearing or exceeding the 90th percentile for mid-July moving over the region, which results in better than normal rain chances Wednesday and beyond along with daytime highs nudging back closer to 90. On the tropics front, the National Hurricane Center has maintained a low (20%) chance of tropical development somewhere over the northeastern Gulf. This is thanks to the aforementioned vorticity maxima rotating over the region Wednesday through at least Friday. Environmental conditions could support some gradual development of this system as it moves west across the northern Gulf. An H5 ridge building across the Carolinas should push whatever is in the Gulf westward, which is indicated in some of the latest ensemble and AI guidance. Still, it is something we`ll carefully monitor over the coming day. Either way, heavier rains and rougher beach conditions are a concern as we head into the second half of the upcoming work week, tropical trouble or not. && .LONG TERM... && .AVIATION... (12Z TAFS) Issued at 558 AM EDT Sun Jul 13 2025 A typical summertime regime of seabreeze convection is expected for this afternoon with the best chances from ECP to TLH and lower chances north and across the other TAF sites. Outside of thunderstorms, VFR conditions are expected. && .MARINE... Issued at 128 AM EDT Sun Jul 13 2025 High pressure over the central Gulf will bring a light to moderate northwesterly wind to the coastal waters today and Monday. Showers and thunderstorms remain possible, especially in the mornings, with waterspouts possible. A trough of low pressure moves through the northeastern Gulf by mid- week, allowing winds to turn more northeasterly Tuesday and southeasterly to southerly by Wednesday and Thursday. The chance that this develops into a tropical or subtropical cyclone is 20% through day 7. The main concern at this time is increased chances of showers and thunderstorms, which may lead to locally higher winds and seas. && .FIRE WEATHER... Issued at 128 AM EDT Sun Jul 13 2025 A seasonably moist and unstable air mass will be in place for the next several days with daily chances of showers and thunderstorms. Fire weather concerns are expected to be minimal outside of gusty and erratic winds near thunderstorms along with lightning and pockets of heavy rain. && .HYDROLOGY... Issued at 128 AM EDT Sun Jul 13 2025 Isolated to scattered showers and storms are expected the next couple of afternoons and evenings. The highest concentration is forecast along the seabreeze and other leftover mesoscale boundaries. Some storms will produce locally heavy rain that could lead to isolated instances of flash flooding, especially in areas with poor drainage. A trough/weak area of low pressure will move across the Florida Peninsula and into the eastern Gulf Monday into Tuesday. Moisture from this system starts to ramp up by mid-week and is expected to linger through the rest of the work week. While there is quite a bit of uncertainty regarding any tropical development, rainfall totals are generally expected to be between 1" to 2" according to most ensemble members, with the higher totals across Florida with lessening totals the more north you head. That said, with precipitable water values (PWATs) forecast to be nearing or exceeding the 90th percentile, or around 2.1", higher rainfall totals are very much in play. It`s just a matter of if higher rainfall totals fall over land or stay over the Gulf. Either way, we`ll continue to monitor the flood potential for later this week. && .SPOTTER INFORMATION STATEMENT... Spotter activation is not requested. However, spotters are always encouraged to safely report significant weather conditions when they occur by calling the office or tweeting us @NWSTallahassee. && .PRELIMINARY POINT TEMPS/POPS... Tallahassee 96 76 98 77 / 50 10 70 30 Panama City 93 79 95 79 / 40 10 40 30 Dothan 96 75 98 76 / 30 10 30 20 Albany 97 75 98 75 / 10 10 30 30 Valdosta 98 75 99 75 / 30 20 60 30 Cross City 94 75 97 73 / 60 30 80 50 Apalachicola 91 78 93 79 / 40 20 50 40 && .TAE WATCHES/WARNINGS/ADVISORIES... FL...Heat Advisory until 8 PM EDT /7 PM CDT/ this evening for FLZ007>019-027>029-034-108-112-114-115-118-127-128-134-326- 426. GA...Heat Advisory until 8 PM EDT this evening for GAZ155>161. AL...None. GM...None. && $$ NEAR TERM...DVD SHORT TERM...Reese LONG TERM....Reese AVIATION...DVD MARINE...Reese FIRE WEATHER...DVD HYDROLOGY...Reese