Area Forecast Discussion
Issued by NWS
Issued by NWS
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790 FXUS62 KTAE 251506 AFDTAE Area Forecast Discussion National Weather Service Tallahassee FL 1106 AM EDT Tue Jun 25 2024 ...New UPDATE... .UPDATE... Issued at 1038 AM EDT Tue Jun 25 2024 A line of storms developed over the Gulf this morning and has been our primary focus of rain and thunderstorm activity so far. As far as the seabreeze, it hasn`t made its full appearance yet. Expect that to start moving onshore in the next couple of hours. The forecast otherwise remains on track. && .NEAR TERM... (Today and tonight) Issued at 317 AM EDT Tue Jun 25 2024 A weak cold front will drift south to near the Florida state line this afternoon before stalling and pushed northward again by the sea breeze. These boundaries and their collision will be the focus for showers and thunderstorms to develop this afternoon, especially in the Florida Big Bend. There is a good deal of mid-level dry air that storms will have to overcome, but this does two things. It may limit the number of storms we see, but the storms that do develop will have the potential to be strong. Given this environment, strong to severe downburst winds are possible. DCAPE is anywhere from 1200- 1600 J/kg on various forecast soundings, and SBCAPE is 2500-4000 J/kg. Thus, while not everyone will see storms today, the storms that do develop could pack a wallop. The other story is the heat. Behind the front, drier air will mix down, leading to hot, but not oppressively humid weather this afternoon. Dew points will fall into the 60s in these areas. South of I-10, and south of the developing sea breeze, the oppressively muggy air remains in place, making for another sweltering day. Dew points here will be in the mid to upper 70s. This combined with temperatures well into the 90s to near 100 will result in dangerous heat index values of 108-112 across the southern half of the area, where a Heat Advisory is in effect. Lows tonight won`t offer much heat relief with mid-70s to lower 80s area-wide. For those that are working or playing outside, take frequent breaks in air conditioning and stay hydrated. This level of heat is dangerous if you don`t take precautions. Know the signs of heat illnesses. And if you hear thunder today, remember "When Thunder Roars, Go Indoors!" && .SHORT TERM & LONG TERM... (Wednesday through Monday) Issued at 317 AM EDT Tue Jun 25 2024 A more unsettled pattern is expected for much of the next week with the mid level ridge retreating westward and troughing in place Wednesday through the end of the week. This will allow shower and thunderstorm chances to increase to scattered to widespread each day with gusty winds and locally heavy rainfall the primary threats. Also as a result, high temps are forecast to lower into the low to mid 90s range Thursday through Saturday. Over the weekend, the mid level ridge begins to build back into the area, raising temperatures again into the mid to upper 90s and limiting daily shower and thunderstorm chances just a bit into early next week. && .AVIATION... (12Z TAFS) Issued at 627 AM EDT Tue Jun 25 2024 Some patchy fog has developed near ECP and TLH this morning. Thus, have added a tempo group through 13z for these sites. Scattered TSRA will develop this afternoon roughly along a line from ECP to VLD. The environment is favorable for these storms to produce strong gusty winds. Confidence in storms is highest at TLH where a PROB30 was introduced this cycle. TSRA was also introduced at VLD based on latest model guidance. Storms will stay well away from DHN and ABY today. Storms will fade after 00z. There`s some possibility of low stratus and/or patchy fog near the end of the cycle, but confidence is too low to include at this time. && .MARINE... Issued at 317 AM EDT Tue Jun 25 2024 West to southwest winds generally less than 15 knots are expected through the period. Seas will generally be between 1 to 3 feet, with the 3 foot waves being favored west of Apalachicola. Long period swells will continue today before dropping to around 4 to 5 seconds by Wednesday. Nightly chances of showers and storms will be possible over the waters with the highest chances east of && .FIRE WEATHER... Issued at 317 AM EDT Tue Jun 25 2024 Generally west to southwest transport winds around 10 to 15 mph and very high mixing heights will lead to good to excellent dispersions the next few afternoons. Dispersions will be highest across the Alabama and Georgia zones Wednesday, then across the Georgia zones and near the Suwannee Valley on Thursday. Minimum RH values will fall into the upper 20s across the far northern zones with 30s and 40s elsewhere. Scattered thunderstorms will develop this afternoon near I-10 and drift southward. These storms today could produce strong, gusty, erratic winds in and near the storms. Rain chances increase further for Wednesday and Thursday area-wide. && .HYDROLOGY... Issued at 358 PM EDT Mon Jun 24 2024 Diurnal pop-up thunderstorms could lead to localized flooding concerns where slow moving storms could produce several inches of rainfall. Otherwise, there are currently no river flooding concerns. && .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 98 77 95 76 / 50 20 50 20 Panama City 93 80 90 78 / 30 10 40 30 Dothan 100 76 97 74 / 10 10 40 30 Albany 100 75 99 75 / 10 10 30 20 Valdosta 99 76 97 75 / 40 20 50 20 Cross City 96 76 93 76 / 50 30 60 30 Apalachicola 91 80 89 79 / 40 20 40 30 && .TAE WATCHES/WARNINGS/ADVISORIES... FL...Heat Advisory until 8 PM EDT /7 PM CDT/ this evening for FLZ007>019-026>029-034-108-112-114-115-118-127. High Rip Current Risk through late tonight for FLZ108-112-114- 115. GA...Heat Advisory until 8 PM EDT this evening for GAZ155>161. AL...Heat Advisory until 7 PM CDT this evening for ALZ068. GM...None. && $$ NEAR TERM...Young SHORT TERM...Merrifield LONG TERM....Merrifield AVIATION...Young MARINE...Merrifield FIRE WEATHER...Young HYDROLOGY...Oliver