Severe Flood Threat Looms in Southwest as Tropical Moisture Arrives
Phoenix, Arizona – A significant flood threat is developing across the Southwest United States as moisture from the remnants of former Hurricane Priscilla combines with an incoming storm system. The National Weather Service warns that this could lead to heavy rainfall and flash flooding starting Thursday and continuing into the weekend.
The National Weather Prediction Center indicates that certain dry areas of the Southwest may receive more than a month’s worth of rain in just a few days. Flood watches are already in effect for cities including Phoenix, Flagstaff, and Grand Junction, as rainfall is expected to begin Thursday and intensify by Friday.
Forecasters have issued a Level 3 of 4 flood threat for central and northeastern Arizona, especially around Flagstaff, where conditions could mirror the severe flooding experienced in 2018, which was also driven by remnants from a hurricane. The WPC has noted that some areas might exceed their average October rainfall within a single day or two, with amounts reaching 3 to 4 inches in heavier-hit elevations.
According to meteorologist Rob Shackelford, the system will combine moist air from Priscilla with a broader weather pattern, leading to a significant risk of flooding, especially in areas that are not used to such heavy rains. This situation is compounded by a recent history of dry conditions across the region, including severe drought in both Arizona and New Mexico.
“As moisture from Tropical Cyclone Priscilla moves into the region, we can anticipate thunderstorms and increased rainfall beginning Friday,” said Shackelford. On the other hand, a second tropical system could follow shortly after, further complicating the water situation.
Authorities are advising residents to stay away from washes and areas prone to flash floods, as just a foot of moving water can displace vehicles. The potential for dangerous debris flows and mudslides in areas affected by recent wildfires is also a serious concern.
While the incoming rain may help alleviate some aspects of drought, forecasters warn that the rapid influx may result in significant runoff rather than deeply soaking the unabsorbing desert soils. Residents are urged to prepare for the possibility of dangerous flooding and stay updated on emerging weather reports.
In summary, Priscilla’s remnants are expected to create hazardous conditions across the Southwest through early next week, with officials urging caution and preparedness in the face of this impending natural event.
