Expect Rain Thursday Morning, Afternoon

Hydroplaning on the freeways is a strong concern, given that it hasn't rained in a while.

Rain fell on the Southland Thursday, setting the stage for wet commutes this morning and this afternoon.

"Main impacts will be hydroplaning on the freeways due to oil being lifted by the first rain in a long time," warned a National Weather Service advisory.

NWS forecasters also warned of the possibility of urban flooding in low-lying areas of Los Angeles County.

The wet weather, resulting from subtropical moisture drifting north from Baja California and combining with a trough of low pressure, is expected to persist through Sunday, according to the National Weather Service.

There could be between a half-inch and three-quarters of an inch of rain along the coast and in the valleys, and up to to two inches in some parts of the San Gabriel Mountains, said NWS meteorologist Curt Kaplan.

The snow level, meanwhile, will remain high, falling to 6,000 feet in the San Gabriels by Friday evening and coming down some more Sunday, when some travel issues could arise on the Interstate 5 corridor even though little is expected in the way of rain or snow accumulation, NWS forecasters said.

Today's rainfall is likely to coincide with the morning and afternoon commutes, according to NWS forecasters, who set the chance of precipitation at 50 percent today, 70 percent Friday, 40 percent Saturday and 20 percent Sunday.

The high today in South Pasadena will be in the upper 60s.

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