280 FXUS64 KCRP 280512 AFDCRP Area Forecast Discussion National Weather Service Corpus Christi TX 1212 AM CDT Sun Apr 28 2024 ...New AVIATION... .UPDATE... Issued at 444 PM CDT Sat Apr 27 2024 Based on latest trends at Buoy019 and the continued long swells around 10 seconds and swell heights around 8 feet, have updated the rip current risk for Sunday to a High Risk and extended the Rip Current Statement through 7 PM Sunday. && .SHORT TERM... (Tonight through Sunday night) Issued at 411 PM CDT Sat Apr 27 2024 Key Messages: - Marginal Risk of Severe for the northern portions of the Brush Country Sunday morning and Victoria Crossroads during the day Sunday - Minor coastal flooding through Sunday afternoon - Strong winds are expected to linger overnight; potential need for a Wind Advisory out west -Isolated to scattered showers Sunday morning A mid to upper level disturbance is moving across the Central Plains today. This will allow for some associated shortwaves to move through our area late tonight/Sunday morning. Some isolated showers and thunderstorms are possible across the region with a low chance (<5%) for theses storms to become severe in nature along our northern portions of the CWA (Brush Country and Victoria Crossroads). A surface low is expected to develop out west over the Rio Grande which will enhance our pressure gradient over the western portions of the region. Winds could stay elevated in response to this which will allow for a low chance (~35%) for Wind Advisory conditions over the Brush Country overnight. The caveat is there is an inversion which will likely keep these winds (around 925mb) from reaching the surface. With these elevated winds and swell periods around 9-10 seconds, Small Craft Advisory conditions are expected to continue through 12Z Monday. This in combination with the swell wave heights around 8-9 feet also prompted the extension of the Coastal Flood Advisory through Sunday Afternoon. Otherwise, tonight will be humid with lows in the 70s expected. Tomorrow high temperatures will be in the 80s to the east with lower 90s out west. && .LONG TERM... (Monday through next Friday) Issued at 411 PM CDT Sat Apr 27 2024 Key Messages: - Low chance of showers and thunderstorms expected this week - Minor coastal flooding possible through midweek Mid Term (Monday through Tuesday)...With the 500 mb trough moving east out of the region, flat ridging/zonal flow takes over for Monday through Tuesday. With the SE sfc flow and the moisture moving in from the Gulf (PW~1.50"), the SB CAPE get to around 2000-3000 J/kg, but the SB CIN is around 50-100 J/kg, so some moderate to strong capping. So will continue with the 15-30% chance pops over the region Monday afternoon and Tuesday afternoon. Winds too, will follow a diurnal curve, with the sfc winds being weak to moderate onshore (SE (120-140)) flow during the afternoon/evening hours, than then diminishing overnight to start the next round of wind. The SE wind will will help to continue to push long period swells up the beach, so minor beach flooding and rip currents will continue. Extended (Tuesday night through Saturday)...High pressure nudges in Tuesday night keeping the chance for showers and thunderstorms at bay until Wednesday when the moisture and a series of small 500 mb shortwaves move through south Texas to keep the low chance (15-30%) for showers and thunderstorms for each afternoon through Saturday. && .AVIATION... (06Z TAFS) Issued at 1052 PM CDT Sat Apr 27 2024 MVFR CIGs are spreading west with LRD and COT expected to lower to MVFR between 06-09Z. VFR conditions are expected to resume for COT and LRD by 20-22Z Sunday with MVFR conditions continuing across the eastern areas through Sunday afternoon and evening. There is a medium chance (30-50%) of showers and thunderstorms moving into COT and LRD some time after 10-12Z, then moves east toward ALI, CRP and VCT between 16-18Z and tapers by late afternoon. The best chance of storms will be from COT to VCT with less activity expected farther south away from the more favorable conditions. Strong southeast winds this evening are expected to decrease, but remain moderate with gusts up to 25kt remaining possible overnight, especially for the CRP TAF site. Farther west, winds have increased with gusts 25-30 knots, but are expected to also decrease through 08-11Z. && .MARINE... Issued at 411 PM CDT Sat Apr 27 2024 Strong onshore flow with occasional gusts to 35 knots will likely persist through Sunday. Seas will remain elevated through Monday morning, so the Small Craft Advisory will continue through Monday morning. Isolated showers and thunderstorms are possible late tonight and Sunday morning. The strong onshore flow will weaken through Sunday night. Weak to moderate onshore flow is then expected to persist from Monday morning through the upcoming week. Isolated to scattered showers and thunderstorms are expected through the upcoming week. && .PRELIMINARY POINT TEMPS/POPS... Corpus Christi 75 90 75 89 / 10 30 10 20 Victoria 73 86 72 87 / 0 50 40 30 Laredo 75 94 73 95 / 10 40 0 30 Alice 74 92 73 92 / 10 30 10 30 Rockport 74 85 74 85 / 10 30 20 30 Cotulla 74 92 72 95 / 20 50 0 20 Kingsville 74 91 75 90 / 10 30 10 30 Navy Corpus 75 85 75 85 / 0 30 20 30 && .CRP WATCHES/WARNINGS/ADVISORIES... TX...High Rip Current Risk through Sunday evening for TXZ345-442-443- 447. Coastal Flood Advisory until 7 PM CDT Sunday for TXZ345-442-443- 447. GM...Small Craft Advisory until 7 AM CDT Monday for GMZ231-232-236- 237-250-255-270-275. && $$ SHORT TERM...TE LONG TERM....JSL AVIATION...TE/81