At 153 PM PDT, Doppler radar was tracking a strong thunderstorm over Ontario, moving east at 20 mph. There is a small chance for a brief, weak tornado.
HAZARD...Wind gusts up to 50 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible.
Locations impacted include... Riverside, San Bernardino, Fontana, Moreno Valley, Ontario, Corona, Rialto, Chino, Redlands, Rancho Cucamonga, Highland, Colton, Montclair, Norco, Loma Linda, Muscoy, Pedley, Rubidoux, Hwy 18 Between San Bernardino And Crestline, and Grand Terrace.