The storm that has battered the state strengthened Wednesday afternoon, prompting officials to issue a brief tornado warning for the central and eastern parts of San Diego County and forcing San Diego Unified schools to shelter in place.

23ABC's official El Nino page.

The tornado warning took effect at about 2:55 p.m. and was to last until 3:45 p.m., according to the National Weather Service.

However, the NWS canceled the warning shortly after 3:25 p.m.

A San Diego Unified School District spokesperson told 23ABC's sister station, 10News  that all schools were ordered to shelter in place when the warning was first issued, but after the warning, normal activity resumed.