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Atlanta Weather | Tropical Update

Atlanta Weather | Tropical Update



The remnants from Tropical Storm Dorian are still hanging around, and if you have plans to head to the Bahamas Islands, pack the rain gear. Dorian will continue to track across the Bahamas through Friday, in a southeast to northwest fashion, accompanied by numerous drenching showers and thunderstorms.


Some of the downpours could lead to localized flash flooding in poor drainage and low-lying areas. Many more downpours will ruin outdoor activities.

Despite the downpour threat, the National Hurricane Center is no longer concerned that Dorian will re-strengthen into a tropical depression or storm as it travels through the Bahamas.

Thursday through Friday, Dorian should track close enough to South Florida to enhance drenching shower and thunderstorm activity slightly.

Residents and beachgoers may experience more frequent disruptions to sunbathing, swimming and other outdoor plans.


Thursday Atlanta Weather Outlook

Storms are weakening overnight as they move to the east.  Wednesday night, some of the storms contained some heavy rain and a lot of lightning as folks were trying to get to sleep.

The rain chance goes down on Thursday.  We will have only a 30% chance of a shower with highs in the upper 80s.  We will also have more sunshine breaking through the clouds as the day moves along.

Expect dry conditions Friday and Saturday.  Temps will return to the low 90s for the end of the week, the weekend and into next week.  The rain chance also returns to 20% Sunday and Monday and a 30% chance on Tuesday and Wednesday. 

Dust Storm off Coast of Africa could affect US southeast coast

Dust Storm off Coast of Africa could affect US southeast coast

A huge dust storm off the coast of Africa could make it all the way to the coast of the southeastern United States.  This Saharan Dust storm is visible on satellite.  At first glance, this might look like a big rain storm or tropical system moving off the coast of Africa.  This is actually a huge dust storm carrying sand and mineral dust particles in the air out into the Atlantic Ocean.

This is something we want to watch for a couple of reasons.  Often, these storm help to suppress tropical development as it travels across the ocean.  Many times, particles act as a "condensation nucleii" to help form a raindrop.  But when there are a lot of particles, that moisture spreads out to attach to many particles rather than just a few.  Since the moisture is spread out, it suppresses rain from developing.  This could hinder tropical systems from developing as the dust storms travels to the east.

Wednesday Evening Atlanta Weather Update

We had a good coverage of rain earlier today.  Hartsfield-Jackson picked up a little more than a half inch of rain today.  Other areas south and west of the city picked up the heavier rain with more thunder and lightning.  We had a break in the rain late afternoon, but it's not all over yet.

We will be watching some showers in Alabama that will move over to the east tonight.  Some of those will make it over the state line.  They will have some pockets of heavy rain and some lightning with it.  It's not a widespread area of rain.  Just expect a few scattered showers during the evening.

The rain chances go down Thursday.  We will have a 30% chance of showers possible early and then again in the afternoon.l  Temps will be warmer since we will have a little more sunshine breaking through the clouds.  

Look for dry weather Friday and Saturday, but also warmer as highs return to the low 90s.

Cool & Wet July

Cool & Wet July

It had been a cool and wet summer for sure, but this July was especially cool and wet. We only had three days with temperatures in the 90s this July, and the hottest day of the summer was only 92° back in June! We only had 6 days without rain in the month of July as well. In fact, there was at least a trace of rain measured at the Atlanta airport every day from July 2nd through July 23rd.

In terms of how that compares to other years, July placed as the 16th wettest on record for Atlanta with around 8.5" of rain. The number 1 wettest July in Atlanta history was back in 1994 when we had 17.71" of rain, and that was all thanks to Tropical Storm Alberto. 

Wednesday Atlanta Weather Outlook

We hit 90 degrees for our high temperature Tuesday.  That's only the 3rd time we've hit 90 during the month of July.  The air was dry with low dewpoints and low relative humidity.  That's ending.  The humidity is coming back.  Moisture returns to make it feel more muggy and to give us a better chance for rain.

A few showers will redevelop Wednesday with temps holding in the mid 80s.  The rain chance sticks with us through early on Thursday.  Then we will have some dry days again Friday and Saturday, with moisture returning again at the beginning of next week.

Rain in ATL Because of Clean Air Act?

Rain in ATL Because of Clean Air Act?

Feel like you are living in Seattle or the Amazon Rainforest lately thanks to the non-stop rain? You can thank the Clean Air Act for that...well, sort of.

Back in 1970 the Clean Air Act was passed. This initiative focused on reducing airborne pollutants that posed a threat to human health. Jeremy Diem, a climatologist at Georgia State University performed research looking at 18 National Weather Service co-op weather stations and noticed that Atlanta’s average annual rainfall increased by 10 percent in the decade following the new Clean Air Act. He studied specifically the summer months during the years of 1948 to 2009.