Saharan dust is headed to Texas, bringing gorgeous sunsets and allergies

Summer is not the season we typically associate with asthma control problems.  The fluctuating temperature, seasonal allergens, and the respiratory viruses are typically more associated with asthma exacerbations in the fall through spring seasons.   

 

However, the Saharan dust approaching this weak does underscore that air quality issues can be a significant problem in the summer.  With this dust comes a higher concentration of airborne particulate matter that can worsen allergies and asthma. 

 

Listed below, are 3 ways to reduce the likelihood of dust and other environmental factors worsening your child’s asthma control: 

 

1. Don’t’ forget your controllers 

 

Missing asthma controller doses during the school season is clearly a problem.  It’s easy to underestimate risk in the summer since most of the conventional triggers are not there.  Don’t do it!  If you have not been advised to stop or reduce controller medication, be sure to continues as instructed.   

2. Monitor the air quality 

 

Just like allergen monitoring, air quality reports are also available and are included in many online weather forecasts and weather smartphone apps.  Airnow.gov provided zip code specific air quality risk.  A recommendation for people with sensitive lung conditions, or an AQI score of 100 or above is usually a good indication to reduce time outdoors.  

 

3. Check with your asthma specialist 

 

If you are overdue for a visit with your asthma specialist, follow up to make sure your asthma is currently controlled.  Absence of symptoms is reassuring, but it is important to have some routine assessment of lung function to confirm this. 

HOUSTON — Saharan dust is headed to Texas! It sounds ominous, right? However, it's a weather phenomenon that happens every year around this time.

In the late spring and through the summer, plumes of dust from the Saharan Desert 5,000-miles away travel across the Atlantic, spanning into the Caribbean and as far as the Gulf of Mexico.

It's called the Saharan Air Layer, or more formally, Aerosol Optical Thickness. Experts say these plumes can dump up to 60 million tons of dust into the atmosphere. 

Satellites pick it up when the dust layer is thick, and this year it's thick enough to track. We're better at it now because of advanced satellites that can tell how much power is lost as sunlight passes through the atmosphere.  

From more intensely colored sunsets to altering air quality, there are some positive and negative impacts that come with these.

Saharan dust is filled with nutrient rich minerals that has played a role in fertilizing the Amazon Rainforest for thousands of years. The dust does sometimes travel far enough inland in the United States that it can cause unhealthy air quality. 

If you notice skies looking a hazy brown color or a pale blue, you may be dealing with Saharan dust in your forecast. If the layer is thin enough, it also creates more intense fiery sunsets.

Impact on hurricane season

These dust plumes can also impact our hurricane season. 

Tropical systems need warmth from the oceans and enough moisture high in the atmosphere to form. These dust layers are very hot and super dry, which will hinder tropical development if it’s dense enough. They also produce strong wind shear that could break apart a storm. 

Sometimes, Saharan dust can suppress thunderstorm development causing the sky to remain hazy for days and can lead to hotter days.

Last June, a massive dust layer dubbed a “Godzilla” dust plume blanketed the Caribbean. 

It was considered the largest dust storm in two decades, according to NASA scientists. 

In a recent study, they are predicting that these annual dust plumes will decrease over the next century as a result of climate change and ocean warming. 

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