1/31/2025
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January 31, 2025 1014 am PST
San Francisco under Flood Watch
Flood Watch issued by NWS San Francisco at 526 am PST Fri Jan 31
FLOOD WATCH REMAINS IN EFFECT FROM NOON PST TODAY THROUGH SUNDAY
EVENING...
Flooding caused by excessive rainfall continues to be
possible in Sonoma, Napa, Marin, Contra Costa, Alameda, San Francisco, San Mateo, Santa Clara, Santa Cruz Counties from noon PST today through Sunday evening. Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas.
Excessive rainfall is forecast through the region. Around 1-3 inches of rain is expected across the warned region by Sunday afternoon, with locally higher totals up to 5 inches in the higher elevations.
Monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.
See the NWS Flood Safety Tips and Resources, here.
Impacting San Francisco-Marin Coastal Range-Sonoma Coastal Range-North Bay
Interior Mountains-Coastal North Bay Including Point Reyes
National Seashore-North Bay Interior Valleys-San Francisco Bay
Shoreline-San Francisco Peninsula Coast-East Bay Interior Valleys-
Santa Cruz Mountains-Santa Clara Valley Including San Jose-
Eastern Santa Clara Hills-East Bay Hills-Northern Monterey Bay-
Including the cities of Woodacre, Scotts Valley, Cordoza Ridge,
Walnut Creek, Berkeley, Blackhawk, San Jose, Angwin, Hayward, San
Ramon, Day Valley, Sausalito, Boulder Creek, Lagunitas-Forest
Knolls, Pacifica, Oakland, San Rafael, Pittsburg, Rohnert Park,
Livermore, Santa Cruz, Daly City, Live Oak, Petaluma, San
Francisco, Watsonville, Concord, South Santa Rosa, Novato,
Tamalpais-Homestead, Napa, Fremont, Antioch, Pleasanton, and
Santa Rosa
Streamflow Situation from the network of US Geological Survey river monitoring stations in California
Visalia Municipal Airport is clear and sunny, 46 degrees with a high 61. Its 48 in San Francisco with a flood watch beginning at noon. Los Angeles is mostly sunny, 56 degrees, the high 63. Its mostly cloudy in San Diego and 59 degrees, the daytime high getting up to 61F.
Streamflows in the north coastal watershed are mostly below seasonal normal, the San Francisco watershed streamflows are higher, mostly seasonal normal, we are not seeing the elevated water levels projected for the flood watch beginning at noon today. Central coast watershed flows are below normal to much below normal. Central Valley water levels are an even mix of normal and below normal with specific sites running high, possibly due to releases from the dams. Los Angeles area flows are mostly normal, the San Diego watershed is running a mix of ratings from low to much above normal. Interior watersheds Lahontan and Colorado River run a mix of normal and below normal. The drought map has filled in extensively, much of California is rated below normal. Central San Bernardino County is rated moderate drought along the Mohave River, the station at Afton is recording a flow below the 2nd percentile.
Safe Drinking Water Advisories
The WTCAL.us Serious Violator list is out, the latest quarterly records audit from the US EPA has California drinking water facilities at 93.5% compliance with the Safe Drinking Water Act. The January 11th data refresh applies to all drinking water facilities in the USA, based on the reporting period ended September 30, 2024. Twenty-four of 7417 licensed and active drinking water facilities in California have significant violations in the latest audit, up five from the previous reporting. WTCAL.us congratulates the following facilities that have successfully remedied their operations, no longer EPA Enforcement Priorities:
- Cazadero Water Company Inc
- Eastin in Stanislaus County
- Foothill Mutual Water Company
- Pavestone in Yolo County
- Pit River Chimney Rock
See the new WTCAL.us Serious Violator List, here.
See Los Angeles County list of the drinking water notices, here. Scroll down to Water Alerts.
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