Severe Winds, Snow, and Rain in California
Rotation off the coast of California near San Francisco was present on Tuesday 2023-03-21 as the area got hit with rains and high windspeeds. The rotation is apparent in both visible RGB satellite imagery and radar reflectivity, animated below using RealEarth. Circular formations in cloud structure, seen by GOES-16, and rain bands picked up in the radar, are visible.
Flood advisories have been issued along much of the state of California, including Los Angeles and Orange Counties. Windspeeds as high as 102 mph were reported near Santa Clarita, CA and 74 mph in Oakland, CA.
California isn’t the only state in the region to experience an excess in rain. Much of central and Northern Arizona are also under flood warnings. Below, the ‘Excessive Rainfall Outlook’ product is displayed in RealEarth. The Excessive Rainfall Outlook is a forecast of the likelihood that rainfall will exceed flash flood guidance (FFG) at a point. This product is issued by the Weather Prediction Center (WPC).