Red Flag Warning issued for Yuma County as heat, winds rise

Dry brush, roadside stretches and any spark from outdoor work faced heightened wildfire risk in Yuma County as the National Weather Service in Phoenix upgraded a Fire Weather Watch to a Red Flag Warning for Saturday. The warning ran from 9 a.m. MST and PDT through 11 p.m. MST and PDT, covering Yuma, Martinez Lake and Vicinity, the Lower Colorado River Valley in Arizona, the Central Deserts and the Lower Colorado River Valley in California.

Meteorologists said the setup was dangerous because very dry fuels lined up with relative humidity around 10% and peak wind gusts that could reach about 35 mph. Many areas were expected to see sustained gusts of 20 to 30 mph, enough to turn a small ignition into a fast-moving fire. The weather office said the combination of low humidity, dry fuels and strong winds created near-critical to critical fire weather conditions across the region.

The warning put the focus on the parts of daily life most likely to face pressure first: field work, roadside travel, and any activity near brush or other dry vegetation. In Yuma County, where outdoor labor and farm operations are part of the summer routine, the gusty conditions raised the risk that equipment, a discarded cigarette or any open flame could start a fire that would spread quickly. The National Weather Service urged residents to avoid activities that could spark wildfires while the warning remained in effect.

The danger was amplified by a run of extreme heat and dryness already baked into the season. Spring 2026 was the hottest meteorological spring on record for Phoenix, Yuma and El Centro. May 2026 was above normal in temperature and below normal in rainfall across the region, and the National Weather Service described Yuma’s May as tied for the driest on record. Yuma also reached 109 degrees on March 20, a reminder that the landscape had been drying out for weeks before the warning was issued.

For Yuma County and nearby desert communities, the message for the next 48 hours was simple: expect fire weather, not just hot weather. With low humidity, gusty winds and dry fuels in place through Saturday evening, conditions were primed for a fire start to spread before crews could catch up.