Some steam fog will try to resurface around sunset, but it may not fully take effect until after 9 p.m. Skies will generally remain partly cloudy throughout the course of the day as high temperatures reach the lower 60s on the west side and mid-60s east of Sutro Tower. Southwest winds will pick up after 1 p.m., reaching gusts of 30 mph along the Great Highway, while more consistent 25 mph winds extend into Twin Peaks, Diamond Heights, Forest Hill, Billy Goat Hill and Glen Park. ![]() San Franciscans by the water will feel more of a southerly wind direction compared with recent days. San Francisco: Tuesday morning will be chilly and a bit foggy from Ocean Beach to West Portal, while a mix of high fog and wispy cirrus clouds skim the warmer, drier air over downtown. This will help slow down the ongoing snowmelt in the range. The other good news is that the cold winds over the Bay Area will reach the Sierra, triggering daytime temperatures that are closer to average for May. Thankfully, Tuesday’s thunderstorms are likely to be short-lived. The Storm Prediction Center is forecasting a general severe weather threat Tuesday for parts of California, mostly along the Sierra Nevada. Those levels are right in the ballpark for afternoon thunderstorms capable of producing 35 mph gusts, small hail and frequent lightning. ![]() If the atmosphere were a game of Kirby, then the low will need to ingest enough atmospheric energy over the mountains so that it can spew out some thunderstorms.īased on readings out of the European weather model, the air over the highest stretches of the Sierra on Tuesday will have around 100 to 150 joules per kilogram of energy available for their development. The low’s flow will also pick up over the Sierra Nevada on Tuesday afternoon. Gusts will reach 30 mph by the water as the Pacific Ocean’s cold air spills inland, keeping daytime highs close to what’s considered average for the end of May - upper 60s by the coast, 70s on the bay shore and lower 80s in cities facing the Central Valley. The low’s healthy signature in recent weather model runs also raises the odds of Tuesday afternoon’s counterclockwise flow sending rounds of breezy conditions to the narrow gaps in San Francisco Bay, including the Golden Gate Bridge and the San Francisco-San Joaquin River Delta. This means that high fog from the Pacific Ocean is likely to cast a veil of clouds over a large swath of the Bay Area. The American weather model is gung ho on the resurgence of marine clouds along the coast and bay shoreline on Tuesday morning, signaling cloud ceilings up to 3,500 feet above sea level. ![]() Tuesday’s rush of mist and high fog has a prime chance of reaching cities as far inland as Sacramento if an area of low pressure develops as strongly as some of the runs from weather models suggest.
0 Comments
Leave a Reply. |