Weather

Hurricane Rosa will continue to lose wind intensity as it approaches Mexico’s Baja California on Monday, but some rain is expected to spread over the Desert Southwest. The risk of flash flooding, debris flows and road washouts will continue to increase at night into Tuesday as even heavier rain affects the region.

The storm will bring rough seas and dangerous rip currents to Southern California. Large waves may knock down people on jetties or rock walls along the coast. Still, it should be dry and warm. Some rain will spread into the state’s northwestern corner and the Pacific Northwest.

Ahead of the tropical system, the northern Rockies and central Plains will turn milder, with some sunshine returning after the dreary end to the weekend. Any lingering snow that fell in Montana on Sunday will melt. The Upper Midwest can expect heavy rain and possible flash flooding. Some showers will spread over New York state and New England.

A warmer and more humid start to October is expected in the Middle Atlantic. The flood-ravaged areas of the Carolinas will also be warm and dry. Showers and thunderstorms are projected to develop from the Gulf Coast to the Ohio Valley.

FOCUS: Rains from Hurricane Rosa Invade the Southwest

Heavy rain may cause flooding in Arizona Monday night and on Tuesday as Hurricane Rosa crosses the Desert Southwest. While Arizona will bear the brunt of the rain, downpours will also affect New Mexico, Colorado, Utah, Nevada and southeastern California.