More of the same today as high pressure centers over Alabama. Temperatures once again peaked in the upper 80s/low 90s this afternoon with the help of mostly sunny skies and southerly winds. Tonight as high pressure remains, skies will be mostly clear. Southerly winds will keep overnight temperatures mild in the upper 60s.
FRIDAY & THE WEEKEND: Over the next couple days high pressure will begin to weak as an upper trough over the central plains shifts east. An upper low will look to lift north over the Carolinas during this time and this will open the door for rain to re-enter our forecast. Thanks to southerly flow over the past 3 day, moisture values have rose to an adequate level for shower/storm development. The reason we haven't had any activity though was due to a lack of forcing. Heating through the day will lead to isolated showers and storms developing during the afternoon. Activity has the chance to increase through the afternoon and evening thanks to the possibility of outflow boundaries and low level lapse rates.
Saturday, dry air will slide into the mid level of out atmosphere thanks to a developing tropical system off the east coast. This will place the best chances Saturday over areas west of I-65. The influx of this Atlantic air will also lead to slightly cooler afternoon temperatures Saturday in the mid to upper 80s.
By Sunday, mid -level flow will become northerly as the low pressure system near the Carolinas shifts north. This will lead to warmer afternoon temperatures Sunday. Most areas will likely hit/pass the 90-degree mark.
Better chances of rain come in to play after Memorial Day as an upper level trough approaches from the north. Rain chances will go up from 10% Monday to 20% Tuesday and Wednesday.
Vernon Turner, WSFA First Alert Meteorologist
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