MORE: Accuweather Forecast: Unsettled through Saturday
ABC7 News Meteorologist Mike Nicco says the Atmospheric River is likely to wash out the Giants' home opener at Oracle Park Friday.
The storm should last less than 24 hours, according to Nicco's Accuweather forecast.
"It's a weak Atmospheric River. The heaviest rain will be on Friday," said Nicco. "It looks like the rain will stop in time for Saturday's Giants game."
Watch the latest AccuWeather forecast and take a look at recent weather stories and videos.