San francisco freeze warning

Best Of. Photos: Rapper J. Cole brought his current tour with 21 Savage to the Oakland Arena, playing songs from his latest effort 'The Off-Season' Wednesday night. The barrage of storms that pounded the Sierra Nevada this winter and spring added up to a snowpack that was massive.

Amid a major heat wave all of that snow melted fast. It has compacted a lot of this runoff into this week. Middle: Sierra snowpack on June 6, at percent of normal for this date. Right: Sierra snowpack on June 20, at percent of normal for this date. Due to a huge winter snowpack, flooding from snowmelt and various repairs, the Sierra pass didn't open until June The road usually opens in late May. With Lake Tahoe nearly full, more water is being released into the Truckee River, creating high flows that can make going under bridges impossible.

The season typically starts in June, but Rudnick expects to run boats for only a couple weeks in August. Many SF residents will remember where they were on Friday, Sept. SF wasn't the only city in the Bay Area that experienced record-breaking heat over the Labor Day weekend.

On Saturday, Sept. Amid severe thunderstorms, a water spout was spotted over Lake Tahoe on Sept. The rotating, funnel-shaped cloud, basically a tornado over water, touched down on the lake at about p. Tony Fuentes, a meteorologist with the service's Reno office, says water spouts on Lake Tahoe are rare and that since only five tornado warnings have been issued.

San Franciscans woke up on Oct. Some people wore masks as they walked or rode their bikes to work—an uncommon sight in the Bay Area. High-pressure ridge stretches along West Coast, blocking storms, bringing unseasonably dry weather in December Northern California and Southern California saw two-plus weeks of dry weather in December due to a high pressure ridge parked along the West Coast.

While Northern California did record rain in October and November, Southern California didn't see any and conditions remained dry as of the writing of this story on Dec. The city's air is typically damp and sticky with an average humidity of 75 percent as moisture sweeps in from the Pacific Ocean.

Throughout the first half of December, humidity was frequently in the teens and even dropped below 10 in some cases as a high-pressure system blocked storms and kept moisture out. Many residents felt the impacts with chapped lips and dry skin. Professional photographer Greg Vitalich took this photo of the massive imposing smoke generated by the Thomas Fire from his back deck in Newbury Park on Dec.

The National Weather Service provides seven-day forecasts and shows a similar scenario through December We might rebound sometime next week. At least through mid-week next week, temperatures look to be around mid- to upper 50s, possibly low 60s.

While Friday will be especially chilly, temperatures will increase by a degree or two over the weekend. No rain is in the forecast through the weekend as a high-pressure ridge sits along the West Coast. This ridge is acting like a wall against Pacific storms and keeping things dry, but Mejia says this system isn't as strong and stable as the previous ridge that kept Northern California dry for two weeks at the start of December.

Northern California has seen an unseasonably dry December with less than a quarter inch of rain recorded in downtown San Francisco since Dec.

Amid a torrent of rain, the Russian River swelled to its highest level in a decade on Jan. The river flooded again in February. Photo: Dustin Coupe is surprised to find out the phone is working as he paddles on a kayak home along River Road during the Russian River flood on Wednesday, Jan.

Regional National Local. Rivers and Lakes. Climate and Past Weather. Local National Drought. Click a location below for detailed forecast. Last Map Update: Mon, Oct. Zoom Out. Flash Flood Warning.

High Surf. A very strong atmospheric river storm system will move through the region late this weekend into early next week. Very large, long period swell is expected to be generated from this storm as it passes. This wave energy will then transition through the coastal waters from late Sunday into Tuesday, and peak on Monday. Swell of 16 to 24 feet at 16 to 18 seconds is forecast to arrive with the largest swell train as it peaks on Monday and result in a number of coastal hazards.

Wind speeds are expected to drop by late Monday night, leading to widespread temperature drops, according to the weather service alert.

The alert also stated that frost is likely to form in coastal areas as temperatures drop to near freezing.