Muggy and Daytime Storminess in Atlanta in the Coming Days

5-day rainfall totals

Atlanta and the surrounding metro areas will experience muggy and wet conditions through the remainder of the weekend into mid-week. A surface high pressure will remain off the Southeast coast, while a closed mid-level low spins over the southern and central Plains. This pattern will favor southwesterly flow (winds coming from the southwest), which will maintain  a moisture-rich atmosphere across the Atlanta area. 

The closed low in the Plains will not come far enough eastward to provide much lift in the atmosphere over Atlanta. Also, no frontal boundaries will trek southward to provide much lift either. Thus, the primary lifting mechanism to support rainy and stormy weather will come from daytime heating each day. On most days, I expect that storms will fire earlier in the afternoon and begin to die out in the early evening. A few could last into the evening hours. 

The Weather Prediction Center currently has 5-day rainfall totals in Atlanta and across the metro between 0.25-0.75 inches. They have areas closer to the Appalachians in northern Georgia getting between 1-2 inches, thanks to orographic lift. Honestly though, totals could exceed those ranges in both places. With decent moisture in the atmosphere, Atlanta could find itself picking up a quick inch from any storm that develops and moves over the city. With that said, the more widespread precipitation will occur over the Mid-south, closer to the closed low.

5-day rainfall projections for the U.S.
5-day rainfall projections for the U.S.

Afternoon storms and more than average cloud-cover will keep daily highs below average most days. Even so, outdoor conditions will remain uncomfortable due to above average humidity. We’re used to it in the South, but if you’re anything like me, I still don’t like it.

Enjoy the rest of your weekend!

By the way, I’ll begin including much better maps, specifically made for Atlanta and surrounding areas very soon. I apologize for the less than stellar national maps in the meantime.