South Mississippi Forecast 8/6/21: Dry for a few days as the tropics get more active

Things look mostly dry again today. Highs back around 90. I tend to think the best chance for a shower or storm will be a bit later in the afternoon or early evening today. High pressure will do a good job to hold most of the rain away. And the area is still close enough to the lingering front that some of the leftover cooler(ish) air is in place.

High pressure will build across the region through the weekend and into next week. This won’t be a cool Canadian high pressure system, though. Oh no, no, no. This will be a subtropical ridge full of heat and humidity.

500mb anomaly map for next Wednesday shows extra ridging across the Southeast and an area to watch in the Tropics out near the Greater and Lesser Antilles // Courtesy: Pivotal Weather

That ridge will likely stick around through most of next week, until it sags back to the west and opens the door to the Gulf.

And models indicate that this could be when we open the “Racetrack” to the Gulf. The European Ensemble and American Ensembles show – roughly – the same pattern, with a ridge in the Atlantic sagging a bit farther south than usual.

500mb anomaly map for next weekend shows an area of lowered pressure near the Gulf Coast and another near the northern coast of South America // Courtesy: Pivotal Weather

The above graphic is, full disclosure here, an unlikely scenario. So why show it? While I think the specifics of placement are not likely, I do think it highlights the potential overall setup: Ridge nudging south, guiding waves through the Caribbean and toward the Gulf.

Have you checked your Hurricane Kit lately? Now may be the time – just in case.



Day-to-Day Forecast

Today
Another mostly sunny and mostly dry day. There will be a 20-percent chance of showers in the afternoon. Highs around 90.

Tonight
Mostly clear. Lows in the lower 70s.

Saturday
Sunny with a 20-percent chance of storms in the afternoon. Highs in the lower 90s.

Saturday Night
Mostly clear. Lows in the lower 70s.

Sunday
Passing clouds with a 30-percent chance for storms. Highs in the lower 90s.

Sunday Night
Mostly clear. Lows in the mid 70s.

Monday
Partly sunny with a 40-percent chance for storms. Highs in the mid 90s.

Monday Night
Partly cloudy. Lows in the mid 70s.

Tuesday
Mostly sunny with a 40-percent chance for storms. Highs in the mid 90s.

Tuesday Night
Partly cloudy. Lows in the mid 70s.

Wednesday
Mostly sunny with a 30-percent chance for storms in the afternoon. Highs in the mid 90s.

Wednesday Night
Mostly clear. Lows in the mid 70s.

Thursday
Partly cloudy with a 30-percent chance for afternoon storms. Highs in the mid 90s.



Tropics

I know I discussed the tropics a bit above, but here is a look at the NHC map. There are two areas of interest at the moment.



Author of the article:


Nick Lilja

Nick is former television meteorologist with stints in Amarillo and Hattiesburg. During his time in Hattiesburg, he was also an adjunct professor at the University of Southern Mississippi. He is a graduate of both Oregon State and Syracuse University that now calls Houston home. Now that he is retired from TV, he maintains this blog in his spare time.