Understanding The Cone Of Uncertainty

Flash flooding and severe storms are possible in the Desert Southwest early this week as moisture from former Eastern Pacific Hurricane Lorena streams into the region.

Showers and thunderstorms have developed Monday over parts of Arizona in response to Lorena's moisture interacting with a strong jet-stream disturbance.

The torrential rainfall has caused flash flooding on roads east of Phoenix in Apache Junction. For additional details on flooding impacts, click here.

The threat of flash flooding will continue through Monday night or early Tuesday, particularly in Arizona and southwestern New Mexico. Flash flood watches have been issued by the National Weather Service for portions of central and southern Arizona and southwestern New Mexico, including Phoenix and Tucson, Arizona.

A few severe thunderstorms are possible in southern Arizona on Monday as well. Damaging winds and large hail would be the primary threats from any storms that turn severe.