The front moved across the central and southern parts of the state this afternoon, with a temperature contrast of 20 degrees or so between central Louisiana and the coast. We saw a continuation of mostly cloudy skies, but most of the area stayed dry. That could change heading through tomorrow.
The front will slowly meander southward through tomorrow afternoon. Another mild day expected with highs in the 70s. The first of many upper-level energy impulses will move overhead which could spark the development of showers. Showers that develop tomorrow should remain fairly light in nature, but with the high humidity, things could be pretty wet through much of tomorrow.
The front may temporarily move down to the south on Monday, bringing in a touch of cooler air and lower our rain chances. This will be short-lived, however, as the front is expected to roar back northward on Tuesday, due to another upper-level impulse approaching. This could be when we begin to see some heavier rainfall manifesting across Acadiana.
The jet stream continues to heat up Wednesday and Thursday, with the front remaining stalled right across the area. This wil lead to several rounds of showers and storms working across the area through the week.
This pattern is expected to remain stagnant, even through the end of the week, due to a stubborn high pressure across the Caribbean, keeping the conveyor belt of moisture right across the southeastern United States.
Rainfall totals will begin to pile up in some locations, especially further northward across the northern parts of the state and the Tennessee Rivey valley. Both the GFS and European models are advertising the possibility of 6-10 inches of rain across Mississippi, Alabama, Tenneesee, and northern Georgia. Both models show more modest totals of 2-4 inches across the southern and central parts of Louisiana. If we see this rainfall slowly within a 5-7 day period, flooding should not be a huge threat as some areas of Acadiana could use the rainfall. Flooding could become more likely across the aforementioned areas north of Acadiana.
~Meteorologist Trevor Sonnier