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On-ramp to I-15 S from Rancho Bernardo Road is clogged with rain. Photo Credit: Facebook of NWS

An urban and small stream flood advisory was issued at noon on Sunday by the National Weather Service due to heavy rain in central San Diego County.

The on-ramp to I-15 from Rancho Bernardo Road was flooded due to a clogged drain. Road Crews cleared the drain at about 3 p.m., according to the NWS. More than an inch of rain fell in the morning at some spots across the region. NWS radar indicated that as much as a half inch of rain had fallen in the 11 a.m. hour at Poway, Ramona, Lakeside, San Marcos, Scripps Ranch, Carmel Mountain, San Pasqual and Escondido.

The NWS warned that excessive runoff from the heavy rainfall could cause ponds to form on streets, highways and underpasses, making them more dangerous for drivers.

Heavy shower time lapse – April 10, 2016Check out this nice time lapse of heavy showers as seen from the NWS San Diego office!

Posted by US National Weather Service San Diego California on Sunday, April 10, 2016

Rainfall totals for the San Diego County included .65 of an inch in Kearny Mesa, .61 at Brown Field near the border, .48 at Montgomery Field, .45 in Chula Vista. .20 in Carlsbad, .36 in City Heights and .18 at San Diego International Airport.

Some mountain areas reported higher rainfall totals of more than one inch, but only a tenth of an inch was measured along the coast.

City News Service contributed to this post.