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375 FXUS64 KFWD 181101 AFDFWD Area Forecast Discussion National Weather Service Fort Worth TX 601 AM CDT Wed Jun 18 2025 ...New Aviation, Short Term... .KEY MESSAGES... - There is a low chance (20-30%) of thunderstorms late today and tonight mainly north of I-20. A few of these storms could become severe. - Seasonably hot and humid conditions are forecast into early next week with little chance for rainfall. && .SHORT TERM... /NEW/ Update: No major changes to the current forecast through tonight although there are a few things to keep an eye on. A decaying complex of thunderstorms is moving through southeast Oklahoma this morning and has pushed an outflow boundary south of the Red River. Scattered showers that had been ongoing within a weak warm advection regime appear to be decaying rather quickly despite the outflow boundary pushing southward. This is likely a combination of weakening low level warm advection and increasing subsidence from the decaying MCS. Nonetheless we'll have to watch where this boundary sets up as we'll generally be weakly capped this afternoon within a moderately unstable airmass. Another area of concern is a band of elevated convection that has developed within an area of high 900-700 mb theta-e across central Oklahoma. Weak ascent from a mid level disturbance is the likely contributor to this renewed convective development, but little of the high resolution model guidance is indicative of this development. This convection will also slide southeast with time but the assumption is this will weaken though the morning coinciding with a weakening low level jet. All of that to say that we currently have PoPs at less than 10% through the early afternoon, but these may need to be raised in a hurry if it becomes apparent that convection will be sustained much farther south. Better chances for storms will arrive late this afternoon and evening when a weak frontal boundary pushes south toward the Red River. Scattered storms will likely develop across south central Oklahoma and may spread into parts of North Texas late this evening. Areas along and north of I-20 will have the best chances for storms this evening. Steep mid level lapse rates and modest instability will support an isolated severe weather threat with damaging winds being the primary threat. Dunn Previous Discussion: /Overnight through Thursday Night/ Partly cloudy skies and warm conditions can be expected tonight as temperatures slowly fall into the mid 70s by morning. A 40 kt low level jet will transport moisture northward overnight and widespread stratus is expected to develop and spread north by morning. A cluster of showers and thunderstorms well off to our northwest will also continue to weaken as it approaches our far western counties. Wednesday will be generally hot and humid with continued breezy southerly winds, although not as strong as they were on Tuesday. A broad trough will be spreading through the central CONUS with a shortwave traversing the southern Plains through the afternoon. This system will send a cold front southward toward the Red River late in the day, but the strongest forcing for ascent is likely to be moving off to the northeast prior to the boundary making it into North Texas. We'll be watching the remnants of a complex of storms that is currently ongoing across parts of Oklahoma. The tail end of this cluster of storms may clip our northeast counties through the midday hours. Additional scattered showers and thunderstorms are expected to develop mainly off to our northeast during the afternoon and we still expect some development to occur back along the frontal boundary in North Texas later in the evening. The atmosphere will be strongly unstable by late afternoon and evening, but mid level capping will likely inhibit a greater coverage/threat for severe weather in North Texas. Nonetheless, any storms that develop will have at least some low potential for damaging winds and/or hail. Coverage of storms still looks like it'll be 20-30% through the late evening hours mainly north of I-20. Any ongoing convection should lose steam through the overnight hours Wednesday night with overnight lows dropping into the mid 70s. Mid level ridging will start to build back in over the Southern Plains on Thursday with any convective chances in our area confined to our far east/southeast counties. Dunn && .LONG TERM... /Issued 203 AM CDT Wed Jun 18 2025/ /Friday through Tuesday/ Mid level ridging will expand and encompass much of the central and eastern CONUS this weekend into early next week. This will effectively end precipitation chances for the region for the foreseeable future. Hot and humid daily conditions are expected with temperatures in the mid 90s and heat indices between 100-105 degrees each afternoon. By early next week the center of the ridge axis will shift far enough eastward to allow some deeper east and southeast flow into TX. This should result in an uptick in diurnal sea breeze showers and thunderstorms to our southeast, some of which will likely encroach on our Central TX counties. Rain chances will remain less than 10% across the region Friday through Tuesday. Dunn && .AVIATION... /NEW/ /12Z TAFs/ Scattered showers primarily north and east of the major airports continue to diminish in coverage this morning and the rest of the morning/early afternoon looks to remain precipitation free, although we'll have to watch an outflow boundary as it pushes south to see if any isolated storms can develop along it. Otherwise, intermittent MVFR cigs will continue for a few hours this morning before scattering out over the next several hours. There is a chance for isolated thunderstorms this evening across parts of North Texas, but the best coverage should remain north and west of the major airports. South winds around 15 kt will continue through the day today and additional MVFR will likely spread out of Central TX early Thursday morning. Dunn && .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. && .PRELIMINARY POINT TEMPS/POPS... Dallas-Ft. Worth 94 77 94 77 95 / 5 20 5 0 0 Waco 92 76 93 75 93 / 5 0 5 0 0 Paris 89 73 90 74 92 / 20 30 10 5 5 Denton 94 74 94 75 96 / 10 20 5 0 0 McKinney 92 76 93 76 94 / 10 20 5 0 5 Dallas 94 77 95 78 96 / 5 20 5 0 0 Terrell 92 75 92 74 92 / 5 10 5 5 0 Corsicana 92 76 92 76 93 / 5 5 5 5 0 Temple 94 75 94 74 94 / 0 0 5 0 5 Mineral Wells 95 73 95 74 97 / 5 20 5 0 0 && .FWD WATCHES/WARNINGS/ADVISORIES... None. && $$