CheckWX is a tool to help pilots better visualize weather data.  It is not intended as a substitute for an official pre-flight weather briefing.

13:59:08 UTC

KOAK SIGMET
Metropolitan Oakland International Airport
Oakland, California, USA
Convective SIGMET
Valid From
Mar-28 @ 12:55 UTC

Valid To
Mar-28 @ 14:55 UTC

Hazard
Convective

WSUS33 KKCI 281255 SIGW CONVECTIVE SIGMET...NONE OUTLOOK VALID 281455-281855 TS ARE NOT EXPD TO REQUIRE WST ISSUANCES.