Heavy rain, winds approaching 50 mph and hail were seen Monday afternoon in parts of the Coachella Valley and the surrounding San Jacinto Mountains
Remnants of Tropical Storm Mario is moving into Southern California as meteorologists warn of possible heavy rain as a large swath of the region is under a flood watch Thursday.
Areas that face the highest chance of rain Wednesday night through Thursday morning -- hovering between a 50% to 60% chance -- is along SoCal's coast, spanning from Los Angeles County down to San Diego County, according to the National Weather Service San Diego.
As you travel more inland, the chance of rain decreases, although even as inland as the Coachella Valley sees anywhere from about a 20% to 30% chance of rain during this period, based on a forecast issued Wednesday afternoon.
But SoCal isn't expected to dry up by Thursday morning. Here's a look at forecasted rainfall totals and the flood watches in effect.
Where is there a flood watch in SoCal? Flood watches span San Diego area to LA
Here's a list of all flood watches for Southern California issued by National Weather Service offices as of Wednesday afternoon:
* Apple and Lucerne Valleys, Coachella Valley, Riverside County mountains, San Diego County deserts and mountains and the San Gorgonio Pass near Banning: Flood watch in effect from late Wednesday night through late Thursday night.
* Chuckwalla Valley, portions of Imperial County, Salton Sea and parts of Joshua Tree National Park: Flood watch in effect from early Thursday morning through late Thursday night.
* Antelope Valley, Cuyama Valley, Interstate 5 corridor, parts of Los Angeles, Ventura, San Luis Obispo and Santa Barbara counties: Flood watch in effect from early Thursday morning through late Thursday night.
* Portions of the Mojave Desert, Morongo Basin, Cadiz Basin and the San Bernardino County-Upper Colorado River Valley: Flood watch in effect from Thursday morning through late Thursday night.
Will it rain in Southern California tomorrow? See the forecast
Much of Southern California sees a greater than 50% chance of rain as of 5 p.m. Thursday, Sept. 18, according to a NWS forecast. Some cities seeing the greatest chances of rain Thursday include Ventura, Los Angeles, Big Bear Lake, Riverside and Palm Springs.
It comes as the NWS San Diego said on X Wednesday afternoon that storms are moving over southwest San Diego County and near Palomar.
"Rain showers and thunderstorms will continue to move north and west tonight" through Thursday morning, with storms gradually moving eastwards Thursday afternoon, the weather office said.
The NWS Los Angeles estimated the total amount of rainfall from Wednesday through Friday. Much of the coast is forecasted to see less than half an inch of rain, while more inland reaches of SoCal can see higher totals.
Here's forecasted rain totals through Friday for select cities in Ventura and Los Angeles counties:
* Ojai: 0.78 inches
* Pyramid Lake: 0.74 inches
* Los Angeles: 0.55 inches
* Santa Clarita: 0.55 inches
* Fillmore: 0.47 inches
* Lancaster: 0.47 inches
* Covina: 0.45 inches
* Oxnard: 0.41 inches
Paris Barraza is a trending reporter covering California news at The Desert Sun. Reach her at pbarraza@gannett.com.