A flash flood watch for mountains on both sides of the San Gorgonio Pass, recent burn areas including the Silver, Mountain and Hathaway fires, and the Coachella Valley has been extended through Tuesday evening.
Here's an updated forecast released by the National Weather Service at 9:32 a.m. Aug. 26:
"Monsoonal moisture and moisture from the remnants of Tropical Storm Ivo will continue to increase today and spread slightly farther west into portions of the inland valleys," the Weather Service advised.
"It is possible that cloud cover could make for a little less thunderstorm activity this afternoon . . . but if thunderstorms do form . . . heavy rainfall and flash flooding are likely . . . especially in the mountains and deserts with isolated flash flooding in the inland alleys.
" . . . Another round of widespread thunderstorms and heavy showers is likely Tesday afternoon through early evening in the mountains and deserts . . . so the flash flood watch was extended for those areas.
"Heavy rainfall in burn areas of the past 2 years will likely lead to mud and debris flows near and below those burn areas. Isolated thunderstorms with locally heavy rainfall are also possible . . . late tonight through early Tuesday morning . . . "