Flood — Contra Costa, California

2018-04-07 · near Selby, Contra Costa, California

Event narrative

I-80 E adjacent to the Pomona on ramp, 2 feet of water in number 1 lane.

Wider weather episode

A late season Atmospheric River impacted the area in early April. A very moist airmass made landfall across the North Bay before moving southward across the rest of the Bay Area. The Oakland sounding measured record PWAT values of 1.69. The absence of large scale forcing prevent record breaking rainfall. Enough rain did fall, however, to cause minoir/nuisance flooding across much of the region. Numerous flood advisories were issued. Storm total rainfall amounts up to 7 were reported. The bulk of the impacts were felt on April 6,7.

View location on OpenStreetMap → (38.0525, -122.2267)

Source: NOAA Storm Events Database, event_id 744503. Narrative written by the NWS forecast office that issued the report.