Unprecedented dust storm sweeps across Ica Valley, Peru

A large dust storm struck the Ica Valley and surrounding regions of southern Peru during the afternoon of July 31, 2025, continuing into the evening and early hours of August 1.

The National Service of Meteorology and Hydrology of Peru (Senamhi) reported wind gusts up to 50 km/h (31 mph) in Ica, at the upper end of known wind speeds for the seasonal “Vientos Paracas.”

According to the National Civil Defense Institute (INDECI), the storm formed when a rare low‑pressure system locally known as an aguada collided with an unusually strong South Pacific high‑pressure front.

This convergence created intense downdrafts and steep pressure gradients along the coast, rapidly lifting sand and dust from the arid coastal plain and desert interior.

The dust wall advanced over the cities of Ica, Paracas, Huacachina, and Nazca, extending its effects to Arequipa, Moquegua, Tacna, and parts of Lima Region.

Authorities reported sudden visibility drops to near zero, forcing temporary closures of highways, disrupting coastal fishing operations, and halting tourism activities in affected desert and coastal areas. The most severe conditions lasted approximately two hours.

Local meteorologists noted that while Paracas wind events occur seasonally between June and October, no previous storm in the Ica Valley has been recorded with such intensity, spatial extent, and visual density. Residents also reported never having witnessed similar conditions.

The storm’s impact was primarily short‑term disruption, and by early August 1, the dust had settled. However, Senamhi warned that strong seasonal winds could continue in coming days, though without the same extreme intensity.

References:

¹ Peru: Sandstorm-causing phenomenon has dissipated, but strong winds to persist – Andina – August 1, 2025

Reet Kaur

I’m a science journalist and researcher at The Watchers, contributing to the Epicenter edition, where I cover peer-reviewed scientific research and emerging discoveries across Earth and space sciences. With a background in astronomy and a passion for environmental science, I’ve worked in shark and coral conservation in Fiji, conducting reef and shark-behavior research, contributing to mangrove restoration, and earning PADI Open Water and Coral Reef Certifications. I bring a blend of scientific rigor and storytelling to illuminate the discoveries shaping our planet and beyond.

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