462 FXUS62 KTAE 160722 AFDTAEArea Forecast Discussion National Weather Service Tallahassee FL 322 AM EDT Tue Sep 16 2025
...New NEAR TERM, SHORT TERM, LONG TERM, AVIATION, MARINE, FIRE WEATHER, HYDROLOGY...
.NEAR TERM... (Today and tonight) Issued at 322 AM EDT Tue Sep 16 2025
Satellite-derived Precipitable Water (PW) imagery shows the heart of a dry air mass centered squarely across the tri-state region, with PW values mostly in the 0.7 to 0.9 inch range. Further north, the air mass from Middle TN to eastern GA is a bit moister, and the southern fringe of that moister air could skirt along and north of the U.S. 82 corridor (Eufaula-Tifton) this afternoon. Cannot rule out a weak, low-topped shower up there today, but the chance of measurable rain only warrants a ghost 10-percent rain chance for now.
Otherwise, NE winds will decrease further compared with Monday. Afternoon seabreezes returned on Monday at our coastal observation sites, and the seabreeze should push a bit further inland today. Otherwise, this afternoon will be similarly hot as recent days.
With more moisture nibbling away at the dry air mass along the northern edge and from the seabreeze along the southern edge, low temperatures tonight should avoid the 50s... 60s will be most common with beachfront locales on the Emerald Coast staying near 70F.
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.SHORT TERM... (Wednesday through Thursday night) Issued at 322 AM EDT Tue Sep 16 2025
The positively tilted mid-level trough that has lingered across the Southeast States over the last week will start to weaken and deamplify, so will lose the persistent low-level NE flow that has characterized this month so far. Instead, a weak surface ridge axis will nose in across south Georgia and south Alabama, with easterly flow to its south along the Gulf Coast. The general easterly flow and afternoon seabreezes off the Gulf will continue to slowly moisten the air mass. Temperatures will generally trend upward. Most notably, the added moisture will cause low temperatures to trend upward through the 60s, while afternoon highs in the low 90s will become more common.
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.LONG TERM... (Friday through Monday) Issued at 322 AM EDT Tue Sep 16 2025
Enough moistening will finally occur this weekend and early next week to bring in low rain chances.
As the upper trough currently over the Northern U.S. Rockies moves east, its southern extent will carve out a broad and somewhat weak upper trough axis digging into the Lower Mississippi Valley this weekend. Downstream of this feature, our flow aloft will shift and become southwesterly. Meanwhile, the turn of our low- level flow around to easterly or perhaps southeasterly will finally bring a return of the moister air mass that has been sidelined out in the Bahamas and across far South Florida. Sunday appears to be the day with the greatest influx of moisture from southeast to northwest, with much of the region getting moister PW values back up above 1.5 inches. As a rule of thumb, 1.5 inches is a crude threshold for supporting deep, moist convection when lacking larger scale lift and relying mainly on local forcing such as the seabreeze. Indeed, large- scale forcing will be weak, and deep- layer shear of 10-20 knots in an air mass characterized by weak to perhaps moderate convective instability will only support a disorganized scattering of showers and perhaps an isolated thunderstorm or two. Nonetheless, after 2-3 weeks with no rain, any rain will only be beneficial.
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.AVIATION... (06Z TAFS) Issued at 322 AM EDT Tue Sep 16 2025
VFR conditions are expected to prevail through the TAF period with mostly clear skies and light easterly/northeasterly winds less than 10 kts.
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.MARINE... Issued at 322 AM EDT Tue Sep 16 2025
Gentle to moderate northeast breezes today will become more easterly by Thursday and weaken a little. Nearshore afternoon seabreezes will emerge each afternoon, with late night and morning land breezes. Seas of 1 to 2 feet will prevail on the open Gulf through this weekend.
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.FIRE WEATHER... Issued at 322 AM EDT Tue Sep 16 2025
Lighter northeasterly flow today will become a bit more easterly on Wednesday and Thursday. With lighter general flow, afternoon seabreezes near the coast will more fully develop and penetrate further inland. One more afternoon of high dispersion is expected today along the I-10 corridor, mainly due to deep mixing and full sunshine. The dry air mass will continue today. Slow day-to-day moistening will begin on Wednesday, especially near the coast as seabreezes more fully develop. However, wetting rains are not expected through this work week, extending the weeks-long stretch of rain-free weather.
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.HYDROLOGY... Issued at 322 AM EDT Tue Sep 16 2025
No flooding is expected for the next 7 days.
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.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.
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.PRELIMINARY POINT TEMPS/POPS... Tallahassee 89 66 90 67 / 0 0 10 0 Panama City 89 68 90 69 / 0 0 10 0 Dothan 89 63 90 66 / 0 0 10 0 Albany 90 63 91 67 / 10 0 10 0 Valdosta 89 64 90 66 / 10 0 10 0 Cross City 90 63 91 67 / 0 0 10 0 Apalachicola 84 69 86 71 / 0 0 10 0
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.TAE WATCHES/WARNINGS/ADVISORIES... FL...None. GA...None. AL...None. GM...None. &&
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NEAR TERM...Haner SHORT TERM...Haner LONG TERM....Haner AVIATION...Montgomery MARINE...Haner FIRE WEATHER...Haner HYDROLOGY...Haner
NWS TAE Office Area Forecast Discussion