The Web Site and Blog of Ted Keller

Saharan Dust

UPDATE 6/25

The SAL is in the Gulf of Mexico today. A cool front and upper level winds will have the effect of keeping this feature south of us for another day. Then, some of this dust will spread north into the Ozarks.

If it isn’t too think, it will redden the sun at rising and setting.

Image from 6/25/20
NASA Optical Depth (Haze Finder) Forecast Through Tuesday

ORIGINAL POST

You may have heard or seen something about a bunch of dust crossing the Atlantic.

It has a name: Saharan Air Layet or SAL. The origin of the SAL is the Saharan Desert of north Africa.

It is common for these to travel west over the Atlantic this time of year. This one is particularly large and quite visible with our impressive satellite technology.

A SAL is a thunderstorm killer which mean by default it will prevent tropical storm development. Now, this isn’t really the prime season for storms that originate over the south-central Atlantic (SAL’s are one of the factors!) so this feature is really just interesting to look at.

Suspended dust can make great sunrises and sunsets and this SAL is forecast to reach the U.S.

It could make it to the Ozarks. If it does, look for it around June 27th or in about five days.

SAL Just Leaving the African Coast on 6/17/20

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