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Summary of article:
The Bay Area will see heavy rain and strong winds on Friday, followed by a second wave of weather systems on Sunday, increasing the risk of large waves on the coast, flooding in low-lying areas and heavy snowfall in mountainous areas.
san francisco The San Francisco Chronicle reported that an impending storm is expected to bring the heaviest rainfall in San Francisco in six months on Friday (the 13th), and another weather system will arrive on Sunday (the 15th).
Hopefully by Monday morning (16th).bay area Cumulative rainfall will reach one to two inches, and there will also be two rounds of strong winds. There will be huge waves on the Pacific coast this weekend.
Most of the rain in the Bay Area will fall during the day on Friday. Scattered rain is possible before dawn on Friday, but several hours of rain are expected by the afternoonheavy rain . There is also a slight possibility of storm.
Cold air is expected to blow over the San Francisco Bay Area from around 9 am to 3 pm. Moderate to heavy rain will first intensify over the North Bay Area in the morning, then reach San Francisco and Oakland around noon, and reach the South Bay Area in the afternoon.
About a half-inch to an inch of rain is expected in the San Francisco Bay Area, with the heaviest rain falling in the North Bay mountains and lesser amounts in the Santa Clara Valley.
Most of the rainfall will be concentrated in a short period of time, and it is easy for water to accumulate on the roads. The storm’s superposition of heavy rain and strong winds could cause flooding in low-lying areas of Malian County, and high tide is expected before 1 p.m. Coastal flood warnings are currently in effect.
Southerly winds have been gusting up to 40 mph, the strongest winds of the season so far, and will peak just before the heaviest rainfall. San Francisco Bay has strong waves, which can affect boat navigation. Strong gusts of wind can easily blow away unpacked Halloween decorations or other unprotected items. Since many trees are still losing their leaves, branches are more likely to be broken than similar storms later in the season.
The cold air is expected to leave the Bay Area before the evening peak and then move toward the Sierra Nevada, causing the snow line to drop rapidly. Blizzard-like conditions are possible in Donner Summit through Friday afternoon. Travel through the Sierra Nevada should be postponed until Saturday.
After the cold front passes, temperatures will drop into the low 50s in the Bay Area, and lows will drop into the 40s in the inland valleys.
Large-scale flooding is expected at sea on Friday night and will peak in coastal areas on Saturday (14th) morning. Waves of 20 to 30 feet were expected at most beaches and the National Weather Service warned of “life-threatening” conditions at beaches and advised people to stay out of the water.
Highs will be in the low to mid 60s, with lows in the 40s inland and the 50s along the coast and Gulf Coast.
Total rainfall on Sunday is expected to be between one-quarter and three-quarters of an inch, and more rain is expected next week, with San Francisco expected to receive more than the November average of 2.6 inches. Affected by the historically rare El Nino phenomenon, the city is expected to receive above average rainfall each month this winter.
Summary FAQ
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The first wave of the storm is expected to affect the Gulf region on Friday. Cold winds will blow from about 9 am to 3 pm and the heaviest rainfall will occur around noon. San Francisco, Oakland and South Bay will be affected one after the other.
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Cumulative rainfall in the Bay Area is about 1 to 2 inches. Heavy rainfall in a short period of time can easily cause waterlogging on roads; Southerly winds can reach 40 mph, blowing over decorations, breaking branches and impacting piers and coastal areas.
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There will be a second wave of rain on Sunday, with waves as high as 20 to 30 feet on the beaches on Saturday morning. Following the cold front, temperatures will drop to around 50 degrees, the snow line will fall in the mountainous areas and a snow storm could occur on Donner Peak on Friday afternoon.
