Flood Threat Looms as Tropical Storm Priscilla Approaches Southwest
TUCSON, Arizona — A significant flood threat is developing for parts of the Southwest as Tropical Storm Priscilla weakens but continues to influence weather patterns in the region. The storm, currently weakened from hurricane status, is anticipated to merge with a separate storm system later this week, setting the stage for heavy rainfall.
As Priscilla dissipates just west of Mexico’s Baja California Peninsula, its moisture-rich air will be funneled into Arizona and southern California. This influx of moisture could result in rainfall amounts exceeding typical October averages for the region.
The National Weather Service warns that over an inch of rain could fall in parts of central Arizona, including the Phoenix area, possibly causing flash floods in low-lying areas. In particular, critical water accumulation is expected in washes, small streams, and slot canyons.
Rainfall could begin as soon as Thursday and increase through Friday. Forecasters predict that the heaviest rains will occur late Friday into Saturday, potentially leading to hazardous conditions for drivers and pedestrians alike.
In similar past incidents, quick bursts of rain have overwhelmed the dry ground, leading to catastrophic flooding. For example, a storm late last month resulted in reports of two inches of rain in just 30 minutes, which caused flash floods in downtown areas.
Last month, Phoenix recorded 2.26 inches of rain in September, nearly quadrupling the city’s average for that month, yet it still grapples with severe drought conditions. Local officials remind people to be vigilant and steer clear of low-lying regions during the rainfall.
Meanwhile, additional rain could be on the horizon, as another tropical system is tracking toward the area early next week. This potential influx of moisture raises even more concerns about flooding across the Four Corners region.
Pima County has responded to the anticipated weather by opening multiple sandbag stations to assist residents in preparing for heavy rain and possible flooding. Starting October 10, residents can pick up sandbags at designated locations and are encouraged to bring shovels to help prepare.
