People are encouraged to clear their gutters and remove any debris that could be carried away in heavy rain. “Those are all going to be hazards to contend with.” “That, in combination with the saturated soils, will easily topple some trees and possibly cause some power lines to come down,” he said. Lorber noted powerful gusts of wind of up to 45 mph are expected to exacerbate these conditions throughout most of the Bay Area. Mudslides and debris flows are also possible in areas with steeper terrain, like the Santa Cruz Mountains. People should expect travel delays and possible road closures where creeks and streams may overflow those banks. Especially around poor drainage areas, people will have a challenging commute on Friday.” “There’s not much the soil will be able to absorb before runoff drains into the streams and roads and creates some travel hazards. “Due to the fairly persistent rainfall we’ve had for the past couple weeks, soils are saturated,” he said. #CAwx #BayAreaWX #CArain /KW2ODCzd9X- NWS Bay Area □ March 7, 2023 As such, a Flood Watch has been issued for the region. Now is the time to prepare! An atmospheric river will impact the San Francisco Bay Area & Central Coast late this week with the heaviest rainfall currently expected to occur Thursday into Friday. Evacuations, downed trees and power outages “are all possibilities,” Lorber said, and people should make sure to prepare in advance. Tuesday morning, an excessive rainfall outlook from the National Weather Service’s Weather Prediction Center showed a “slight risk” of flash flooding for the Bay Area, though Lorber told SFGATE on Tuesday afternoon that the risk had been upgraded to a “moderate” level, meaning there is at least a 40% chance the amount of rainfall from Thursday to Friday could exceed flash flood guidance. Those areas could see anywhere between 6 and 8 inches of rain over the weekend, Jeff Lorber, a meteorologist for the NWS, told SFGATE. Now, forecasters are anticipating that most parts of the Bay Area will see at least a couple of inches of rainfall - generally between 1.5 and 4 inches for lower-elevation areas, with higher amounts expected in coastal mountain ranges like the Sonoma Mountains, the Santa Cruz Mountains and portions of the Big Sur coast. The heaviest rain will likely arrive Thursday night into Friday morning, as SFGATE reported Monday.
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