Tropical Storm Priscilla Threatens Flash Flooding Across Southwest U.S.

Fri Dec 05 2025 16:27:57 GMT+0200 (Eastern European Standard Time)

As remnants of Tropical Storm Priscilla approach the southwestern U.S., meteorologists warn of possible flash floods. Up to three inches of rain could hit areas already vulnerable to flooding, especially in Arizona and beyond.

Tropical Storm Priscilla, downgraded from hurricane status, is expected to strike the southwestern U.S. This storm poses a significant threat of flash flooding, particularly in Northern Arizona where rainfall of up to three inches is anticipated. Recent catastrophic floods highlight the risks, and officials are monitoring conditions closely to prevent tragedies. Residents are urged to stay informed and exercise caution, especially in regions prone to sudden storm surges and flash floods.

FORT COLLINS, Colo. (AP) — A region more accustomed to baking heat than soggy weather is about to get soaked, raising the risk of flash floods that can surprise — and kill — in minutes.

Downgraded from a powerful hurricane, Tropical Storm Priscilla has lost its punch in the eastern Pacific Ocean near the coast of Mexico’s Baja California peninsula. But the storm still carries plenty of moisture and is now bearing down on the southwestern U.S., where flood warnings are already in effect.

Forecasters expect the moisture-laden rains from Priscilla's remnants to saturate areas in Arizona, Utah, New Mexico, and Colorado through the weekend. Some locations might receive as much rain in hours as they typically do throughout an entire year.

Recent deadly flooding in Texas and New Mexico underscores the potential dangers associated with such rains. Meteorologist Robert Rickey of the National Weather Service in Flagstaff, Arizona, expressed concerns about individuals becoming caught in the hazards posed by the rain.

Arizona Most at Risk

Northern Arizona is particularly at risk, with 2 to 3 inches (5 to 8 centimeters) of rain expected in and around Flagstaff, the gateway city to the Grand Canyon. Some areas could see even higher amounts, although precise predictions are challenging. While Flagstaff typically receives significant annual rainfall, such heavy downpours are infrequent.

Those in regions with minimal drainage infrastructure are urged to exercise caution, as these downpours can lead to rapid and dangerous flash floods. The National Weather Service has already received calls from people concerned about their outdoor plans during this hazardous weather.

Flash floods are the second deadliest weather phenomenon in the U.S., with 145 fatalities reported in 2024. Many victims risked crossing flooded areas in their vehicles.

Only recently, southern Utah experienced severe flash flooding due to heavy storms, which trapped several individuals. As preparation measures, officials are closely monitoring potential flooding areas, including low water crossings and regions that experienced recent wildfires.

In preparation for the impending rainfall, local authorities are implementing emergency measures and advising residents in high-risk areas, including those under the North Rim of the Grand Canyon, which had recent wildfires, to take precautions.

Mike Rock from Junipine Resort in Sedona reported that staff at the resort are vigilant about the weather. As conditions worsen, guests are informed on necessary precautions, and adequate safety protocols are in place.

Officials continue encouraging the community to remain aware of weather updates, stay in safe locations during severe conditions, and avoid unnecessary travel during the storm.