Weather

Lamorinda Rainfall Totals

Get the latest updates, including rainfall totals for Lafayette, Moraga, and Orinda, after a "bomb cyclone" tore through the region.

Sunday's rainfall was caused by an atmospheric river that flowed over the Bay Area.
Sunday's rainfall was caused by an atmospheric river that flowed over the Bay Area. (Rachel Nunes/Patch)

LAMORINDA, CA — The wild weather is in our rearview mirror, but it left a mark on Lamorinda and the East Bay.

Mount Diablo saw more than 8 inches of rain over the past two days, the weather service said Monday morning.

There are multiple rain gauges throughout Lamorinda. The biggest rainfall total in each city, according to the National Weather Service:

Find out what's happening in Lamorindafor free with the latest updates from Patch.

  • Lafayette: 7.85 inches
  • Orinda: 8.1 inches
  • Moraga: 9.38 inches

It's "been a memorable past 24 hours for the Bay Area as the long-talked-about atmospheric river rolled through the region," the weather service said before dawn Monday. "We literally have gone from fire/drought conditions to flooding in one storm cycle."

San Francisco saw its wettest October day ever and its fourth-wettest day overall since the Gold Rush, according to the weather service.

Find out what's happening in Lamorindafor free with the latest updates from Patch.

The storm was dubbed both an atmospheric river and bomb cyclone.

Atmospheric rivers are "relatively long, narrow regions in the atmosphere — like rivers in the sky," according to the National Oceanic and Atmospheric Administration.

A bomb cyclone occurs when a storm experiences bombogenesis, meaning it rapidly intensifies over a 24-hour period, according to NOAA.

The weather is expected to start to clear up Tuesday, according to the weather service. Temperatures are forecast to return to the 70s later this week.

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