Bay Area residents have enjoyed a warm and dry start to the Thanksgiving weekend, with daytime temperatures in the high 60s, but they will soon be forced to bundle up as a cold front blasts the region with frosty lows in the 30s starting next week.
Monday will see the arrival of colder air as part of an area of atmospheric pressure extending through southwest Canada. The cold air will last through late next week with highs “mostly in the 50s to lower 60s, with overnight lows dipping into the 30s to lower 40s,” according to the National Weather Service.
Wednesday will be the coldest day with lows in the upper 20s to 30s “for most areas away from the immediate coast and bays,” the weather service said.
As the Bay Area heads into a cold front, the chances of rain have faded from an earlier forecast that predicted a modest downpour between half an inch and .25 inches on Monday.
“The rain chances definitely have diminished and pretty much have fizzled out across the Bay Area for the Sunday to Monday timeframe,” said Roger Gass, a National Weather Service meteorologist. He said the chances of rain later in the week “aren’t that great” but currently stand at around 20% to 30%.
“We’re still going to see a weather system drop down from the north and it’s going to turn temperatures down much cooler than we’ve experienced in the past few days. However, we’re not seeing the moisture and upper-level support really line up that would give us some of that beneficial rainfall that we were hoping for,” Gass said.
The Sierra Nevadas will see “much colder” temperatures of around 10 degrees below normal starting on Tuesday, with a light scattering of snow ranging from one inch to 3 inches in the Lake Tahoe area and near the Oregon border, according to the National Weather Service station in Reno.
Source: www.mercurynews.com