Good morning, San Francisco. Here are some headlines to start the day.

February's "supermoon" was extra bright over the Bay Monday night, and peaked early this morning. It's called a "snow moon" because it's February, and it's often accompanied by big snowfalls. [CBS SF]

– It's official: Bernie Sanders is in the race for the 2020 Democratic nomination. After months of speculation, the 77-year-old Senator from Vermont is throwing his hat in once again. [New York Times]

A two-alarm fire Monday on the 12oo block of Page Street, near the Golden Gate Park Panhandle, has displaced 17 people. Tenants were helping each other escape the blaze, and no injuries were reported. [CBS SF]

A separate, one-alarm fire broke out around the same time Monday afternoon at a residence hotel at 15th and Valencia. It was reportedly caused by a hoarder, and no one was displaced or injured. [Mission Local]

A four-vehicle collision shut down three lanes of westbound 580 just before 5 a.m. this morning in Oakland. There was one major injury in the crash after a car burst into flames, but all lanes have now been cleared. [ABC 7]

– San Francisco isn't alone in the affordable housing crisis: Gov. Newsom put 47 California cities on notice last week. The governor called out the cities, which are mostly clustered in SoCal, for failing to comply with state laws requiring them to build more affordable dwelling units. [Sac Bee]

– Oakland schools are bracing for a teachers' strike that could begin on Thursday. [ABC 7]

– The same NIMBYs who always complain are complaining about Outside Lands' ten-year permit extension. [Curbed]

– ICYMI on Friday, the case against a man accused in a double homicide on Twin Peaks on Valentine's Day in 2016 ended in a hung jury. [SF Weekly]

– A 39-year-old Richmond woman and her 5-year-old daughter have reportedly been missing since Sunday night. [Chronicle]

– Ford GoBikes are coming to the Marina despite neighborhood pushback. [Examiner]

– A hot-air balloon carrying 11 people was forced to crash-land in Vallejo Sunday after high winds pushed it toward power lines. [CBS SF]

– In honor of Black History Month, KQED brings us a guide to the city's black-owned eateries. [KQED]

Photo by Tawan Rapipong on Unsplash