A flash flood watch has been issued for the Santa Clarita Valley, as well as the greater Los Angeles area, due to the incoming storm system expected to pass through tonight and Friday, Oct. 28, according to the National Weather Service.

While rain is anticipated to begin this afternoon, “the heaviest of the rainfall will be tonight and continue until early Friday morning,” according to National Weather officials.

The expected amount of rainfall during this storm system is predicted to be a quarter inch to an inch in the Santa Clarita area.

The National Weather Service also warns a possibility of thunderstorms, which may be capable of generating roadway flooding as well as mud and debris flows in and below recent burn areas, such as some of the Sand Fire burn areas. Lightning storms might also be likely should the thunderstorms occur.

The flash flood watch is expected to end tomorrow morning when the heaviest of the rainfall will taper off into showers as the threat of heavier rains will decrease by the end of the day, according to the National Weather Service.