Monsoon moisture is back, bringing threat of showers and thunderstorms

Another day of high heat is on tap along with the chance of showers and thunderstorms, courtesy of monsoon moisture that arrived last night.

The National Weather Service has issued a flood watch starting late this morning for the Antelope Valley, San Gabriel Mountains and the Bridge Fire burn scar, as well as the Highway 14 corridor.

Forecasters say thunderstorms could trigger heavy downpours and strong winds. The flood watch will remain until Wednesday evening.

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And heat advisories are still in effect until 6 p.m. for most of SoCal, as temperatures will exceed 100 degrees in the valleys and inland areas.

The Orange County coast will see temperatures between 80 and 90 degrees today, and up to 94 degrees more inland.

In L.A County, the beaches will see temperatures in mid 70s up to 83 degrees and up to 95 degrees for areas around downtown L.A.

The warmest parts of L.A. County valleys will see temperatures up to 104 degrees, and upper 80s for the cooler parts. Meanwhile, highs today for the Inland Empire will reach 99 degrees.

And in Coachella Valley, expect a high of 104 degrees.