Area Forecast Discussion
Issued by NWS Dallas/Fort Worth, TX
Issued by NWS Dallas/Fort Worth, TX
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159 FXUS64 KFWD 301808 AAC AFDFWD Area Forecast Discussion...UPDATED National Weather Service Fort Worth TX 108 PM CDT Tue Apr 30 2024 ...New Aviation... .SHORT TERM... /Issued 528 AM CDT Tue Apr 30 2024/ Update: No major changes were made to the forecast through Wednesday morning with everything remaining on track except for some minor adjustments to PoPs and dew points. A warm day is expected across North and Central Texas with clearing skies and southerly winds around 10 to 15 mph. Dry line convection may reach our westernmost counties where a few storms could be strong to severe for large hail, though this will be highly conditional and coverage will remain limited as we move into the evening hours. Reeves Previous Discussion: /Through Wednesday Morning/ A quiet but humid night is underway for North and Central Texas as dew points linger in the mid to upper 60s across the region. An additional surge of moisture from the southeast will result in increasing cloud cover through Tuesday morning as low-level clouds fill in across the region. Along with this is the low end potential for patchy warm-air advection fog, mainly across Central Texas. This window for patchy fog will be relatively brief into the morning hours as skies gradually clear and daytime mixing resumes. Overnight lows will remain mild through the morning as well, generally bottoming out in the low to mid 60s. This surge of moisture through Tuesday will result in a sharpening moisture gradient along the dry line that will be located off to our west on Tuesday afternoon. As this occurs, daytime heating coupled with clearing skies and southerly winds will lead to afternoon highs rising into the mid to upper 80s across the region, with a few locations in our westernmost counties approaching the 90 degree mark. While the environment will be conducive for isolated strong to severe thunderstorms across our northwestern counties, the question regarding how far east convection propagates remains. The lack of large-scale forcing for ascent also lessens confidence in the spatial extent of thunderstorm activity through Tuesday afternoon and evening. The latest hi-res guidance continues the trend of convection reaching our northwestern counties by around midnight Wednesday before quickly dissipating. All of this being said, any thunderstorms will be capable of becoming severe should they make it this far east. The main threat would be large hail with lower potential for a damaging wind threat, but this potential will remain quite isolated with limited coverage. Cloud cover will be increasing once again across North and Central Texas overnight Tuesday into early Wednesday morning. As a result, overnight lows on Wednesday will be warmer, ranging in the mid to upper 60s and low 70s across much of the region. Reeves && .LONG TERM... /Issued 346 AM CDT Tue Apr 30 2024/ /Wednesday Onward/ We will be in the open warm sector of a deepening leeside low near the OK/TX Panhandles Wednesday. A north moving cluster of showers is expected to develop over the Texas Coastal Plains in the late morning/early afternoon. Diurnal heating may (40-50% chance) erode the cap, allowing for scattered storms to move into Central Texas in the afternoon. Weak deep-layer shear should limit the ability for the storms to organize, but moderate instability and steep mid-level lapse rates support the potential for a few storms to produce small to marginally severe hail. It`s worth noting that the low-level shear has a favorable directional profile, but weak magnitude. If the wind speeds come in stronger (i.e. the low to our west deepens more than we expect), the severe threat would consequently increase. Meanwhile, a dry line will sharpen over West Texas and serve as a trigger for convective initiation well to our west Wednesday afternoon. A shortwave trough will also move over the Southern Plains Wednesday evening and Thursday and support additional storms well ahead of the dryline Wednesday night. The shortwave will marginally increase the deep-layer shear and threat of severe hail, but not much. Widespread showers and storms are expected Wednesday night into Thursday morning with a gradual west to east movement. Heavy rain will likely accompany this activity. Given the already saturated soils, it will not take much more rain to cause flooding. A lull in convective activity is expected Thursday as the storms move into East Texas before additional storms develop along a cold front late in the day. These storms should move into our area late Thursday into Friday morning. How well the atmosphere rebounds ahead of the front will largely determine the severe threat with this activity. The front will then waver through the weekend into early next week. There are significant differences in the deterministic guidance regarding the placement of the front. Some have it lingering nearby while others drive it all the way into the Northern Plains. Either way, daily storms chances are in the forecast through the weekend...with higher chances Sunday when a shortwave trough moves through. Ensemble trends are indicating the development of a stronger mid- level ridge over the Gulf Coast in the middle and late parts of next week. This would result in a warming trend with highs in the 90s more likely than not--most locations have a 50-70% chance from Tuesday onward--next week...and since the moisture will not be significantly scoured, heat index values in the upper 90s are possible 7-10 days from now. Welcome to May. Bonnette && .AVIATION... /NEW/ /18z TAFs/ Stubborn MVFR and patchy IFR cigs should gradually improve/scatter out to VFR by 20z with southerly winds between 12-15 kts with a few gusts > 20 kts by mid-late afternoon. Winds will diurnally back around to the SE near 15 kts this evening. Though not advertised attm due to low confidence and probability, a VCSH or VCTS for isolated "conditional" SHRA/TSRA may be needed. Again, this is very conditional on isolated storm development well W-NW of the area near the dryline, then outflow and development off this outflow with a weak mid level impulse moving E over the D10 airspace. Otherwise, winds will back southerly 10-15 kts overnight with MVFR cigs arriving into the DFW D10 airports just before 12z Wednesday with some IFR possible by mid morning, but returning to MVFR by 18z, at which time southerly winds will will average near 15 kts with gusts 20-25 kts. 05/Marty && .PRELIMINARY POINT TEMPS/POPS... Dallas-Ft. Worth 70 83 69 81 67 / 20 20 60 80 50 Waco 68 82 69 80 68 / 0 30 60 70 50 Paris 65 83 67 76 66 / 5 30 50 90 60 Denton 68 82 68 80 64 / 20 20 60 80 50 McKinney 68 82 68 79 66 / 10 30 60 80 60 Dallas 70 83 69 81 68 / 10 20 60 80 50 Terrell 67 82 67 79 66 / 0 30 60 90 60 Corsicana 68 84 70 80 68 / 0 30 60 80 60 Temple 69 82 69 81 68 / 0 30 60 70 40 Mineral Wells 67 83 67 84 65 / 20 20 70 60 40 && .FWD WATCHES/WARNINGS/ADVISORIES... None. && $$