By Reginald Stanley. Posted March 21, 2019, 5:30 AM.

Unstable conditions during the latest low pressure system incursion into the region produced some locally heavy showers across parts of inland Southern California on Wednesday.

Significant cell activity occurred inland just after 1 PM Wednesday afternoon, and again later Wednesday evening. Widespread thunder, as well as rain rates of up to 2.50 inches per hour were reported. The hardest-hit communities inland included Hemet, San Jacinto, Lake Elsinore, Wildomar, Perris, Moreno Valley and Beaumont (Cherry Valley) - all areas that are typically impacted during monsoonal thunderstorms during the summer, more than other areas inland. As of midnight Thursday, the highest total was 0.70 inches in Hemet, followed by 0.64 inches in Moreno Valley. Other notable totals included 0.52 inches in Perris, 0.51 inches in Wildomar, 0.48 inches in Lake Elsinore, and 0.46 inches in San Jacinto. Many of these locations lie in the eastern valleys, which are somewhat drier during most winter storms while receiving more rain from monsoonal moisture during the summer months. Simi Valley was the only WeatherCurrents station to not record any measurable rainfall Wednesday.

Additional showers were expected throughout the day on Thursday. Storm totals will be posted after the moisture has left the region late Thursday night or Friday morning.