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9h ago

Priscilla Weakens Offshore but Puts Arizona at Elevated Flash-Flood Risk

Forecasters expect 2 to 4 inches of rain through Saturday across parts of Arizona, Utah, Colorado, with flash flooding likely in central Arizona.

Image
A forecast from the NWS Weather Prediction Center shows where the highest risk of flash floods will be this weekend.
A satellite image of Hurricane Priscilla.
Priscilla has weakened into a tropical storm but is still expected to bring heavy rainfall to portions of the southwestern U.S. in the coming days, according to the National Hurricane Center.

Overview

  • Priscilla was about 270 miles west of the southern tip of Baja California on Thursday with sustained winds near 50 mph and is forecast to transition to a post-tropical cyclone by Friday, according to the National Hurricane Center.
  • The National Weather Service placed central Arizona under a moderate risk for flash flooding, with Phoenix and Winslow facing at least a 40% chance of flash flooding as tropical moisture surges north.
  • Rainfall totals of 2 to 4 inches are expected across portions of central and northern Arizona, southern Utah, and southwest Colorado through Saturday, with local maxima up to 6 inches and numerous flash-flood occurrences likely in central Arizona.
  • Parts of Arizona, California, and Nevada are under flood watches as the threat expands from the lower Colorado River Valley into the Great Basin late Thursday into Friday.
  • Large swells from Priscilla are producing life‑threatening surf and rip currents along Baja California Sur and parts of coastal southwestern and west‑central Mexico, while Southern California faces scattered mountain and desert showers with modest totals.