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By Joe Edwards
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Residents from Missouri to West Virginia reported waking up last week to find their vehicles and outdoor surfaces coated in a grimy film following rain showers.
A massive dust storm in Texas and parts of eastern New Mexico led to the unusual weather event, known as "dirty rain," across multiple states.
Why It Matters
Dust storms in arid regions are becoming more common due to prolonged drought conditions.
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When these storms coincide with precipitation, they can cause not only an inconvenience for residents but also potential public health concerns, as inhaling fine dust particles can exacerbate respiratory issues.
What To Know
The dust storm hit parts of Texas and New Mexico last week, where dry conditions and intense wind gusts created a massive cloud of airborne debris.
The New York Post said that residents in affected areas woke up to find their vehicles covered in a thick, brown residue. Some social-media users described the scene as "crazy gross rain" and speculated about the cause before meteorologists confirmed the source.
Strong winds carried fine particles into the atmosphere, which then mixed with precipitation and fell as grimy precipitation across the Midwest and East Coast, leading to reports of dirty rain in states including Missouri, Illinois, Kentucky, West Virginia, and Virginia.
What Is Dirty Rain?
Dirty rain, also referred to as "mud rain," occurs when airborne dust and pollutants become suspended in rain clouds and fall back to the ground mixed with precipitation. This typically happens when strong winds lift soil and fine particles from dry regions, carrying them long distances before they are deposited by rain.
While the phenomenon is not uncommon, its severity depends on the amount of dust present in the atmosphere. In extreme cases, dirty rain can reduce air quality and visibility, creating additional hazards for motorists and those with respiratory conditions.
What People Are Saying
AccuWeather meteorologist Jacob Hinson told Newsweek: "The dust that has appeared on cars over the last few days was transported eastward from New Mexico and Texas by upper-level winds in the atmosphere. This windstorm-driven dust became entrained in the flow, then got trapped in falling rain and deposited on cars all across the eastern US. Particles in the atmosphere will get trapped in falling rain, but there often aren't enough of them to be noticeable when it evaporates like there is here."
Meteorologist Tyler Sebree said on X, formerly Twitter: "Anyone else in Ohio or nearby states have a super dusty/dirty car this morning? Dust particles from the Southern Plains were carried by upper level winds to several Midwest states. That dust 'attached' to the rain and snow that fell in the last 24 hours and ended up on our cars!"
Meteorologist Brandon Stover said on X: "Yes, looks like that was associated with a Texas Dust Storm. Low-pressure that brought us the rain later on Saturday drew that dust up from the south, and it mixed with our rain."
Meteorologist Steve Templeton said on X: "If your car looked like this after the morning rain, you might be confused. It's caused by dust that was blown up into the air yesterday in the Southwestern US. Our rain then took that dust aloft back down to the ground this morning and the result is 'dirty rain.'"
What Happens Next
With ongoing drought conditions in parts of the Southwest, experts warn that similar events could become more frequent.
Update, 03/10/2025, 1:07 p.m. ET: This article was updated with comment from Hinson.
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