09/02 – Brantly’s “Lower Rain Chances, Drier Air” Thursday Night Forecast

 An area of upper-level high pressure will continue to expanding eastward over the entire southeast U.S. through Friday afternoon. The surface boundary will be pushed southward with the storms overnight toward the coast, but then meander back north throughout the day Friday. Friday will likely be a much drier day overall, with little rain coverage outside isolated to low-end scattered coverage along the south of line from Baton Rouge to New Orleans. Dry conditions will prevail to the north under the dome of high pressure. Low temperatures tonight will lower into the low to mid 70s, with highs on Friday once again warming into the lower 90s. The highest dewpoints will occur south of line from Baton Rouge to New Orleans, depending mainly on how the surface boundary sets up tomorrow. A Heat Advisory may be required where the higher dewpoints setup, but the exact location is still uncertain at this time so will pass this along to future shifts.

Heading into the weekend, slightly higher moisture levels near the coast combined with the lingering boundary will lead to isolated to scattered showers and thunderstorms in that areas. High temps will remain in the upper 80s and low 90s. Slightly drier air will help lower heat index values to the upper 90s to near 100 each afternoon.