Local Storm Report
Issued by NWS San Francisco Bay Area, CA

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314
NWUS56 KMTR 281207
LSRMTR

Preliminary Local Storm Report
National Weather Service San Francisco CA
407 AM PST Sun Dec 28 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0315 AM     Rain             2 NNE Piedmont          37.85N 122.22W
12/24/2025  E0.50 Inch       Alameda            CA   Broadcast Media

            Broadcast media reported that Caltrans had
            reported that the Caldecott Tunnel received
            damage from heavy rain on Christmas Eve.
            Rainfall rates that morning were around
            0.5-1.0/hr. Heavy rain and inclement weather
            damaged electrical equipment and resulting
            in ventilation issues for 2 of the bores.
            These bores were closed for 2 days. Time of
            heaviest rain estimated by radar and nearby
            observations.


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