438 FXUS64 KFWD 312313 AFDFWD Area Forecast Discussion National Weather Service Fort Worth TX 513 PM CST Sat Dec 31 2022 ...New Short Term, Aviation... .SHORT TERM... /NEW/ /Tonight through New Years Day/ High temperatures had no problem warming into the 70s in most locations this afternoon due to increasing low level warm air advection, periods of sun, and compressional warming from a breezy southwest wind. Warm air advection will continue tonight through Sunday in response to a low pressure system approaching from the west. Lows tonight will be warmer than last night with mainly lower 50s. Highs Sunday will be just shy of some records for the first day of the new year, ranging from the lower 70s in the east to around 80 across parts of Central Texas. If afternoon clouds end up being thin or less numerous than currently expected, some high temperature records may be in jeopardy. 79 && .LONG TERM... /Issued 144 PM CST Sat Dec 31 2022/ Update: The long term forecast features the storm system on Monday followed by near seasonal temperatures and dry weather the rest of week. Increasing moisture ahead of the approaching closed low will result in scattered light rain late Sunday night into Monday morning. Coverage of showers and storms will increase during the day as a pacific front/dryline approaches from the west. Areas near/east of the I-35 corridor will have the highest rain and storm chances as the front moves through late morning and afternoon. Our thinking regarding the severe weather potential remains the same with the best chances along and east of I-35. However, there's still some uncertainties with the timing of the front which will impact where these late morning/early afternoon storms actually develop. See discussion below for more in-depth details. Dry and more seasonable-like weather (Highs:50s/60s) will follow the rest of the first week of 2023 as a surface ridge dominate the weather pattern across the plains. Sanchez Previous Discussion: /Sunday Night Onward/ Summary: Warm and breezy weather can be expected on New Year's Day. Showers and storms are expected on Monday associated with an upper level low pressure system and a cold front. Some severe weather will be possible along and east of I-35. Dry and seasonable weather is then expected for the rest of next week. Discussion: An upper level low will cross the Four Corners Sunday night before emerging in the Central and Southern Plains on Monday. At the surface, a 1000mb (MSLP) lee-Rockies surface low will accompany the upper level system, and should be located over eastern Colorado by daybreak Monday. A Pacific front will extend southward from the surface low through West-Central Texas. Warm and moist air advection will keep temperatures on the warm side for early January, with Monday morning lows ranging from the upper 50s in the northwest to the mid 60s across the south. A moist and unstable airmass will develop across the region as the upper low and surface frontal system approach from the west. Scattered showers and a few elevated storms may be ongoing in the morning, but more widespread convection will develop by afternoon as a lead shortwave lifts northeast through the Big Country. Storms will likely develop along or just ahead of the surface front, which still looks to be located near or perhaps slightly east of the Interstate 35 corridor around the time of convective initiation. Bulk shear values around 50kt, in combination with MUCape values of 1500+ j/kg, would support supercellular storm mode in the early stages, making storms capable of producing both large hail and damaging winds. SRH values in the lowest levels also appear pretty robust, or sufficient to support the development of a few tornadoes. The shear vector being nearly parallel with the front may allow for rapid storm mergers and the transition to a linear system as convection progresses east across the eastern half of the forecast area Monday afternoon and evening. Damaging winds would be the primary storm threat at that stage, but a tornado concern may also still exist with any embedded supercells or qlcs spin-ups. With all that said, we are still a few days out, and a slight shift either west or east in the frontal position as storms develop could make a big difference on where the best severe potential would exist, so be sure to check back for updates this weekend. Storms will exit to our east late in the evening, leaving dry and cooler air in place across the region Monday night. Temperatures will still be above normal, however, until a secondary front ushers in an even cooler airmass Tuesday night into Wednesday. Seasonable temperatures and dry conditions will be the result for the second half of next week. 30 && .AVIATION... /NEW/ /00Z TAFs/ VFR at all TAF sites through Sunday with scattered to occasionally broken high clouds. A south to southwest wind will prevail between 8 and 13 knots tonight and Sunday with occasional higher gusts Sunday afternoon. 79 && .PRELIMINARY POINT TEMPS/POPS... Dallas-Ft. Worth 54 77 62 73 50 / 0 0 10 70 20 Waco 52 77 63 75 48 / 0 0 20 60 20 Paris 50 72 61 70 49 / 0 0 20 100 50 Denton 51 75 61 72 45 / 0 0 10 70 20 McKinney 51 74 61 72 47 / 0 0 10 80 20 Dallas 55 76 62 73 51 / 0 0 10 80 20 Terrell 54 74 62 73 50 / 0 0 20 90 30 Corsicana 55 75 63 75 52 / 0 0 20 90 30 Temple 52 76 63 75 50 / 0 0 20 50 20 Mineral Wells 49 78 59 73 45 / 0 0 10 40 10 && .FWD WATCHES/WARNINGS/ADVISORIES... None. && $$