CHP closed all lanes on the transition ramp from Interstate 15 to Interstate 805. Traffic came to a complete stop at one point. A tow company cleared the road a short time later and all lanes were back open Monday.
Rain and mountain snow were expected to ease up Monday morning as a cold front moves out of the region, but gusty wind was expected in parts of San Diego County into the afternoon and cooler weather and high surf is in the forecast through Tuesday.
In a one-day period ending around 11:15 p.m. Sunday, automated gauges recorded .70 of an inch of rain on Palomar Mountain; .45 of an inch at Mt. Woodson; .36 of an inch in Julian; .28 of an inch in Poway; .23 of an inch at Miramar; .22 of an inch in Rancho Bernardo; and .20 of an inch in Escondido and Rancho San Diego. Less than two-tenths of an inch were recorded in several other valley, coastal and mountain locales.
``Showers are departing this morning just as quickly as they came,'' according to the weather service. ``Aside from a few stray light showers -- one moving off the San Bernardino Mountains into the northern Coachella Valley and a couple over San Diego County -- (precipitation) looks to be over.''
A National Weather Service winter weather advisory for the mountains expired at 3 a.m. today. However, a high wind warning for the mountains and deserts will remain in effect until 1 p.m. West winds of 35 to 45 miles per hour and gusts up to 65 mph are expected throughout the remainder of the advisory period.
Peak wind gusts recorded through 2 a.m. were 71 mph at Volcan Mountain and 59 mph in Borrego Springs.
Forecasters said the wind may lead to hazardous driving conditions, especially for motorists in high-profile vehicles. Visibility on some desert roadways may also be reduced due to blowing dust. The winds may also be strong enough to damage trees, signs and power lines.
Big waves are expected along the beaches as a large northwest swell develops today, and a high surf advisory will remain in effect until 2 p.m. Tuesday. Surf of 4 to 7 feet and sets to 9 feet will be possible south of Del Mar.
Cooler weather is also expected in San Diego County today and Tuesday with frost possible in the valleys each night, according to the NWS. High temperatures of 5 to 15 degrees below average are forecasted, but a gradual warm-up is expected Wednesday.