Excessive Heat Warning

until FRI 8:00 PM MST, Yuma County, Parker Valley

Red Flag Warning

from SAT 11:00 AM MST until SAT 8:00 PM MST, Northwest Deserts/Northwest Plateau

Flash Flood Warning

from FRI 7:02 PM MST until FRI 10:00 PM MST, Pima County

Special Weather Statement

until FRI 7:45 PM MST, Aguila Valley, Northwest Valley

Air Quality Alert

until FRI 9:00 PM MST, Tucson Metro Area including Tucson/Green Valley/Marana/Vail, Maricopa County

APPLE EVENT LIVE: Watch costs $349 to $10,000 starting 4/10

Published March 9, 2015 4:53am MST

SAN FRANCISCO (AP) - Make calls, read email, control music, manage Instagram photos, keep up with your workout, pay for groceries, open your hotel room door. CEO Tim Cook says you can do it all from your wrist with Apple Watch - for 18 hours a day. That's how long the battery will last.