Record rainfall has fallen throughout the West Coast since Tuesday as several weather systems brought wetter-than-normal conditions to the area. The rain has come as a major relief to the drought stricken state of California, although it brings hazardous conditions to many residents.
Numerous cities in California have seen staggering amounts of rain since Tuesday with more rain expected to fall in the coming days. Major cities such as San Diego, Los Angeles and San Francisco have already received roughly 2 inches or more of rain in 72 hours, causing flooding and mudslides. At Los Angeles Airport, a new record was set for daily maximum rainfall with 1.42” of rain on Tuesday. Portions of San Francisco have received over 2.5” in the past 72 hours, and the city of Venado in Sonoma County received a whopping 9.55” of rain in 96 hours.
The heavy amounts of rainfall led to major flooding across California as the soil became over-saturated and unable to absorb the rain. Areas previously affected by wildfires were especially susceptible to mudslides, such as the city of Santa Clarita where residents were told to evacuate their homes. San Francisco halted their cable car system, portions of major roads such as Interstate 5 were forced to shut down, and several motorists had to be rescued from flooded waters.
The above normal rainfall has been linked to El Niño, as the warmer waters in the Pacific Ocean increase the chances of these wetter weather patterns to reach the West Coast. However, heavy rainfalls often occur in California regardless of whether or not El Niño is present. Regardless, the record setting rainfall is sure to help alleviate the drought conditions in California.
Friday will see a much needed break from the heavy rains, giving California residents a short amount of time to recover before rain returns late on Friday night and continues into late Saturday. Several rounds of additional rain are expected throughout next week but accumulations are not expected to be as heavy as this past Tuesday.
As flooding and mudslides are likely to continue, it is important to take the necessary safety precautions. Most flood related drownings are preventable by simply being prepared and avoiding unnecessary danger. Just a few inches of flowing water can knock down an adult, and as little as a twelve inches can float a small vehicle. Knowing if your home or frequently traveled routes are prone to flooding, staying clear of already flooded areas, and monitoring the forecast in heavy rain events are essential. Keep track of rainfall using the current and future rainfall radar feature on the MORECAST app, and stay on top of the situation.