Big Changes Ahead in the Forecast | NBC Bay Area

Big Changes Ahead in the Forecast

We ll see more clouds to start the weekend, however high pressure will hold its ground long enough to ensure at least one more mild day with highs in the 60s and 70s around the Bay Area. Look for northwesterly onshore winds to increase on Sunday which will set the stage for some cooling temps. And then by Monday, increasing clouds will continue the cooling trend before rain finally makes a comeback.WINTER BLAST ARRIVES TUESDAYA cold trough of low pressure will drop down the coast on Monday night. This may toss some early showers into the North Bay later on Monday evening but the main rain and mountain snow event will be during the day Tuesday. Highs will be mainly in the low 50s! This will be roughly 20 degrees cooler from Saturday s highs for some spots. The airmass will be cool enough to drop snow levels into the 3-4,000 foot range which means it should be a decent snow producer for the Sierra to energize the ski season and snowpack totals after a mainly dry stretch to the year.The cooler air aloft may also allow for some convective showers at times which may include some small hail and brief thunder. Wednesday should see a brief decrease in showers during the day, then another system drops in for Thursday, again from the north so rain totals aren t expected to be extreme, but welcome after our prolonged mid-Winter dry spell. Highs will continue to stay in the 50s through the end of the week.Enjoy your Saturday!Rob Mayeda