Pinpoint Weather: Heat and humidity contribute to afternoon storms each day

Weather Blog

The heat and humidity are combining to develop some afternoon pop up storms. The lack of cloud cover early in the day is allowing the sun to heat the ground rather quickly today.  As the air above the ground warms, it rises with all that moisture in each molecule, the air reached the condensation level in the sky and cools.  Clouds are formed and continue to build as the day moves along. Once filled to capacity, they drop the payload of rain. The problem is not knowing exactly where the rain will fall. 

Generally speaking, we can look to areas that will heat up faster than others, like the Piedmont, so that would be a good guess as to the advent of the daily storms.  We also have mountains, so if there is a steady breeze the mountains, along with the upslope winds, will generate some storms as well.  Safe bet is to keep the whole region under a watchful eye for storms this time of year when no fronts or areas of disturbance are forecast to migrate overhead.

Today we should be looking at another active day with respect to the pop-up storms. Not as bad as Monday, but some isolated storms may pack a punch as there is still a lot of moisture being pushed into the region by the low to the west and the high to the east.

Wednesday may be a bit more robust as there should be some flooding in our eastern counties. An area of disturbance may drift across the Piedmont and Coastal Plain so that may add to the genesis of the rain. Flooding is possible in our eastern counties.

Thursday will be another active day as the low in the west is on the move to the east. This will help to give us more storms as well. Then Friday looks to be the most active day as the energy in the west gets closer and squeezed out even more rain.

Each day the temps will be in the upper 80s to low 90s, so combine that with humidity and we have several days of oppressive heat with storms each afternoon. A persistent pattern of precipitation and very warm weather.

Stay safe, in the shade, and drink plenty of water.

John Carroll
Chief Meteorologist

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