Brian Peters: Weekend storms for Alabama, but drier next week

Brian Peters forecasts a change in Alabama’s weather just beyond the weekend from Alabama NewsCenter on Vimeo.

THE ALABAMA WEEKEND: I always find it interesting to see how the temperature changes as a shower or storm moves close by but does not produce significant rain. I recorded 1 hundredth of an inch, barely enough to dampen the street, but the impact on my temperature was pretty good.

This morning there are a few showers occurring over south Alabama. Outside of the showers there is a mixture of clear skies and clouds, with temperatures in central Alabama mainly in the lower 70s. It is going to be another day with scattered showers driven by afternoon heating as highs climb to around 90 degrees. There is a marginal risk for damaging wind across south Alabama and the Florida Panhandle.

A surface cold front will move through Alabama on Sunday, when we’ll see a marginal risk for severe storms over the southern half of Alabama and parts of Mississippi and Georgia. Severe weather should be limited to isolated storms driven with the help of afternoon heating, with damaging wind the main prospect.

COOLER, DRIER NEXT WEEK: The surface front exits into the Gulf early Monday as a trough becomes established along the East Coast. This puts Alabama and the Southeast under northwesterly flow aloft and brings in some much drier air for much of the week ahead. This will mean lower dew points that are likely to drop into the 50s, especially on Tuesday. That should feel very nice, with some locations seeing lows in the 50s. But even for those of us who don’t drop quite that cool, the lower half of the 60s with drier air will feel good. And those afternoon highs in the 80s with less humidity will also seem pretty good.

The trough along the East Coast stays with us, so we stay in a northwesterly flow pattern with a nice ridge over West Texas. We’ll have to be alert to the potential for the development of large clusters of thunderstorms over the central U.S. and traveling into the Southeast on that flow. In fact, the Global Forecast System shows a fairly potent short wave over West Tennessee on Friday that might produce such an event. By the end of the week temperatures should again be approaching the 90s.

Rainfall for the next five days will occur primarily with showers over the next two days. Amounts will be spotty, with some places seeing less than a quarter of an inch while others are luckier and see one-half to three-quarters of an inch.

LONG TERM: Looking out into voodoo country, the GFS 500 millibar forecast charts keep a slight troughiness over the Southeast for much of week 2. This is good to see, since it keeps us out of any excessive heat. But by June 16, ridging appears to be on the increase with the potential for higher heat, more humidity and a return to daily showers and storms.

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For more weather news and information from James Spann, Brian Peters and the rest of the James Spann team, visit AlabamaWx.

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