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018 FXUS64 KMOB 121837AFDMOBArea Forecast DiscussionNational Weather Service Mobile AL137 PM CDT Wed Aug 12 2026...New DISCUSSION, AVIATION, MARINE....KEY MESSAGES...Updated at 1059 AM CDT Wed Aug 12 2026 - Heat Risk increases on Thursday, which will continue into the upcoming weekend. A Heat Advisory is in effect from 11AM thru 8PM on Thursday, with additional heat headlines expected through the weekend. Afternoon heat indices in the 105-112 degree range will be dangerous for anyone outdoors for extended periods. - A Moderate risk of rip currents returns to Florida beaches Wednesday afternoon through Thursday.&&.DISCUSSION...Issued at 1059 AM CDT Wed Aug 12 2026Starting off with early this afternoon, seeing a few shallowshowers developing inland, as well as a few anchored to SW/NEboundaries in nearshore marine areas. Latest NBM PPI grids fromthe 13Z guidance supports this well, as CAMS continue to supportbest rain chances along/north of the I-10 corridor. A few thatinteract/anchor to the seabreeze boundary aided by greater forcing could grow tall enough to become thunderstorms with time.Regardless of nearby high pressure, the vertical column/thermal profile according to proximity soundings remains rather moist adiabatic, with a slug of enhanced tropospheric moisture locked inacross SE LA, east to our general area. But we'll see all activity come to an end later on around sunset once we lose diurnal support.Generally quiet tonight, then another hot one coming up tomorrow.Did pay close attention to afternoon dewpoints, implementing amore realistic PBL mixing regime and lowering inland dewpoints afew degrees. Wanted to do this first before looking at MaxAptvalues which even after the fact, clearly places us in HeatAdvisory criteria for the I-10 corridor. Now farther inland,especially across interior AL along the I-65 corridor, yes,greater deep mixing could prohibit reaching criteria (moreso104-107), but did not want to split hairs and obscure the messaging that impacts will be increasing starting tomorrow for those spending time outdoors. The upper-level ridge centeroverhead continues to retrograde west, with remnant energy overthe Ohio Valley region to rotate south into AL/GA, in conjunction with building tropospheric moisture to enhance afternoon shower/storm coverage. NBM PoPs are targeting greater coverage for mainly eastern areas, which appears plausible given aforementioned reasoning. A few storms could be locally strong, with strong gusty winds the main risk. Will monitor that. Friday through the weekend, the main key message will be the heat, with heat headlines likely to persist. Otherwise, will monitor this same mid-level impulse, then drifting west along the northern Gulf coast that could aid in dynamic lift to support a bit greater, mainly late morning into afternoon scattered shower/storm coverage, particularly on Saturday. A few storms may be locally strong to severe depending on how storms behave acrossintersecting boundaries enhancing localized ascent, but will monitor.Next week, the heat continues with no real major changes in theimpacts. Afternoon heat indices in the 106-110 range will persist, with typical mainly afternoon pop-up storm chances. We could see a bit of a breakdown in the ridge mid-week, allowing a trending weakness in upper-level heights to support greater shower/storm coverage and less in the way of the heat, however, will be able to fine tune that closer especially into early next week. KLG&&.AVIATION...(18Z TAFS)Issued at 1059 AM CDT Wed Aug 12 2026Expect VFR conditions for all area terminals through the forecastperiod. Did introduce Prob30's this afternoon mainly for PNS, as well as MOB and BFM for an isolated shower or storm possible. Coverage/confidence is low, however, with prevailing VFR outside of any isolated SHRA/TSRA. Clear/calm tonight with no additional impacts expected. KLG&&.MARINE...Issued at 1059 AM CDT Wed Aug 12 2026Nearby high pressure will continue to promote light southwesterly to westerly winds through the forecast period. Waves/seas will remain light with no impacts anticipated. KLG&&.PRELIMINARY POINT TEMPS/POPS...Mobile 94 76 94 76 / 20 0 10 0 Pensacola 93 79 94 79 / 20 10 20 0 Destin 91 80 92 80 / 20 10 10 0 Evergreen 95 75 96 76 / 20 0 10 0 Waynesboro 97 76 98 74 / 0 0 0 0 Camden 94 76 95 77 / 10 10 10 10 Crestview 96 75 97 75 / 30 10 20 0 &&.MOB WATCHES/WARNINGS/ADVISORIES...AL...None.FL...None.MS...None.GM...None.&&$$
