Please be advised that there will be a Public Safety Exercise taking place in the Civic Center area starting at around 10:30am Friday morning. "There will be emergency vehicles in the area and potential traffic delays. This exercise should last less than 60 minutes," notes AlertSF. more ›

This just in: a tornado warning has been issued for the San Mateo County Coast. Cool! (Can we say that?) San Mateo County Office of Emergency Services send out the following alerts at around 11:15 a.m.: "The Callifornia Weather Service has issued a Tornado Warning for the San Mateo County Coast. Tornado Approaching San Mateo County Coast. Please be alert and seek shelter." more ›

Oh oh. A suspicious looking package was discovered at 15th Street and San Bruno this afternoon -- well, 550 15th Street to be exact -- prompting the bomb squad to investigate. SFist reader Sean Manchester sent in the image of the squad in action. (We pray to God nothing happens to the Audi.) more ›

Although this image looks tempting, NorCal surfers/sailors, the National Weather Service issued a high surf advisory today for Bay Area beaches. The advisory goes into effect from 10 a.m. to to 4 a.m. Saturday. more ›

The California Department of Public Health (CDPH) sounded the alarm today, warning "consumers not to eat Santa Cruz County sport-harvested shellfish because the clams, mussels, scallops or oysters may be contaminated with domoic acid, a dangerous toxin that is harmful to people." more ›

AlertSF reports that there's a "[g]as main break on Bayshore Blvd btwn Industrial St & Augusta. Bayshore shut down in both directions. Avoid area for next hour." more ›

At the risk of sounding like an alarmist -- oh hush, yous -- a tsunami warning has been issued for the California and Oregon coasts. We're not buying it. But still, check it. more ›

Get. Out. Of. The. Water. Why? Well, it seems that someone spotted a shark swimming along the coastline just off of Stinson Beach, prompting authorities to shut down the beach to the public. CBS5 reports, "Golden Gate National Recreation officials told CBS 5 that they received two 'reliable' shark sighting reports on Monday. As a result, officials said they made the determination to close the beach for 5 days." Although Great White Shark attacks are relatively common in the area, insofar as shark-to-human attacks go, it wasn't know what shark, exactly, was spotted. more ›

This just in: "At 1300 hours today [1 p.m. -- SFist], possible Mountain Lion [Pretty, pretty fluff puff with a big, wet nose] seen on trail on San Bruno Mountain [at his or her home]. If mountain lion seen, call 9-1-1 Sent by XXX to Brisbane, San Bruno, South San Francisco, Daly City (E-mail accounts, Pagers, Cell phones) through SMC Alert." Consider yourselves warned. (Thanks, KatyG, for the details!) more ›

Yikes. Not to drizzle gasoline on a fire again, but this alarming note was found at Drumm & Jackson (sent to us via Lady_K.) more ›