SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 1243 PM CST Tue Jan 07 2025 Valid 091200Z - 101200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated, non-severe thunderstorms are possible across parts of the western Gulf Coast States on Thursday into Thursday night. ...TX/LA... A northern-stream shortwave impulse should phase with the closed mid/upper low in the Gulf of CA vicinity, yielding a longwave trough from south-central Canada to northwest Mexico by Thursday night. Downstream low-level warm-moist advection will yield increasingly widespread precipitation across the south-central states on Thursday as a weak surface cyclone becomes established off the western Gulf Coast. Despite ample precipitation coverage, thunder potential appears slim. Very isolated thunder from parcels rooted near 700 mb may linger Thursday morning in the central TX vicinity. Thereafter, scant elevated buoyancy should become confined to the coastal plain, initially across Deep South TX and then shifting north-northeast through the rest of the period. Relatively warm upper-level temperatures in conjunction with weakening mid-level lapse rates may preclude charge separation inland. Some thunder potential is expected near the coast, with greater coverage over the adjacent offshore waters. ..Grams.. 01/07/2025