Light rain was reported at Hemet and Moreno Valley at midafternoon today, as National Weather Service forecasters said a large thunderstorm was threatening to drop heavy rain and possibly hail.
The National Weather Service said its radar picked up thunderheads at 1:54 p.m. that it estimated were capable of causing quarter-sized hail and flash floods, over the cities of Hemet, Moreno Valley and Lakeview. The NWS also said “continuous, cloud-to-ground lightning is occurring with this storm.”
That prompted the NWS to issue severe thunderstorm warnings for the Moreno and San Jacinto valleys, effective at 2 p.m.
The thunderstorms were moving to the northwest, towards Riverside, at about 5 miles per hour.
Earlier in the day, heavy rain was reported at the Big Bear Lake area, where one observer noted .95 inches of rain in one hour.
North of the mountains, in the Adelanto and Phelan areas, heavy rain was reported, prompting the NWS to issue a flood warning for washes and flood control channels.