* WHAT...Up to 1.0 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways.

* WHERE...Bayshore locations along the San Francisco Bay, San Pablo Bay, and Monterey Bay.

* WHEN...In effect now through 1 AM PDT Thursday.

* IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected.

* ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 1.0 ft above normal (6.79 ft MLLW) at 10:54 PM Wednesday 9/9. These predictions include up to 0.6 ft of storm surge that will enhance the astronomical tide and flooding threat. High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively.

* WHAT...Hot conditions with temperatures 10 to 20 degrees above normal during the day, with overnight lows also running 10 to 20 degrees above normal.

* WHERE...Bay Area and Central Coast.

* WHEN...Until 10 PM PDT Thursday.

* IMPACTS...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health systems and in heat-sensitive industries. Hot conditions can cause heat illnesses.