FXUS64 KCRP 042334 AFDCRP Area Forecast Discussion National Weather Service Corpus Christi TX 634 PM CDT Sat May 4 2024 ...New AVIATION... .SHORT TERM... (Tonight through Sunday night) Issued at 248 PM CDT Sat May 4 2024 Key Messages: - There is a low chance for thunderstorms in the northern Rio Grande Plains, northern Brush Country, and Victoria Crossroads. Low pressure in west Texas, and a warm front that is stretched across north Texas and into Oklahoma will begin to move tonight as a 500 mb shortwave trough pushes through the region and pushes the sfc low east and the warm front a little south into the Hill Country. Models are kind of divided into two camps, The ECMWF fires off a storm, or a complex of storms that move into the Hill country and turns east along the front and continues east into southeast and east Texas. The GFS fires off the complex near EPZ and moves east overnight. The CAMs fall into pretty much those two camps. The NBM takes a blend of these two sets spreads the pops south into the northern Brush country with chance (40-50% chance pops from northern Webb county to around VCT. The showers and thunderstorms look to last into the morning on Sunday, however, the models again, are in two camps with the ECMWF bringing a small bull's eye of rain, while the GFS begins to clear out. The NBM continues with 50% pops in most of the forecast area through about 15z, before it begins to medium chance pops 30-40% by 18z, and 20% pops through the afternoon. Sunday night looks to quiet down and clear out as high pressure and dry air moves back into the region. && .LONG TERM... (Monday through next Friday) Issued at 248 PM CDT Sat May 4 2024 Key Messages: - There is a moderate to high chance of heat index values 95 degrees and higher. Onshore flow will continue to stream moisture into the area, resulting in above normal moisture across South Texas. This will combine with the increasing heat to result in heat index values over 95 degrees. By Wednesday, there is a moderate to high chance that heat index values will be 105 or greater over portions of South Texas. A Heat Advisory may be needed for the latter part of the week. For those of us who think this is "just normal" for South Texas, we need to remember that we aren't quite used to this. The NWS HeatRisk, which takes the time of year into account, indicates a high HeatRisk for each day from Tuesday through the end of the work week--with an Extreme risk for portions of South Texas Thursday. Please use caution if you need to be outside. There is still a bit of a cool down on the horizon as a cold front is expected to move through this weekend. At this point, we'll take whatever we can get before summer comes. && .AVIATION... (00Z TAFS) Issued at 623 PM CDT Sat May 4 2024 VFR conditions have briefly returned this evening. However, ceilings will begin to lower over the next couple of hours. MVFR will prevail through the majority of the night and morning hours tomorrow. There is a low chance of patchy fog across the Coastal Plains but winds may be just strong enough to negate fog development. There is a fair amount of uncertainty regarding showers and thunderstorms on Sunday. Will show VCTS across all sites through much of the morning and afternoon hours. As confidence increases, we could see TSRA introduced with next TAF issuance. VFR conditions return during the late afternoon hours Sunday. Otherwise, gusty southeasterly winds will continue through much of this TAF cycle. && .MARINE... Issued at 248 PM CDT Sat May 4 2024 Weak to moderate onshore flow is expected continue tonight and go through the end of the work week, with Small Craft Exercise Caution conditions expected each afternoon. && .PRELIMINARY POINT TEMPS/POPS... Corpus Christi 75 86 75 88 / 20 40 10 0 Victoria 74 85 73 88 / 40 50 10 0 Laredo 76 90 76 97 / 30 50 0 0 Alice 74 88 74 92 / 30 40 10 0 Rockport 75 84 75 85 / 20 40 10 0 Cotulla 75 89 75 95 / 50 50 10 0 Kingsville 75 87 75 90 / 20 40 10 0 Navy Corpus 77 85 76 86 / 20 40 10 0 && .CRP WATCHES/WARNINGS/ADVISORIES... TX...None. GM...None. && $$ SHORT TERM...JSL LONG TERM....LS AVIATION...TC/95