Napa County, CA
Alerts
Alerts are listed in order of start time and level of severity. Click on the alert title to read details for each alert.
In effect from Thursday 06/11 8:48 PM PDT – Wednesday 06/17 3:00 AM PDT
Issued by NWS San Francisco CA
What
Up to 1.9 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways.
Where
Bayshore regions of the North Bay along the San Pablo and San Francisco Bays.
When
Until 3 AM PDT Wednesday.
Impacts
Flooding of lots, parks, and roads with only isolated road closures expected.
Additional Details
At the San Francisco tidal gauge, high tide is expected to be 1.3 ft above normal (7.1 ft MLLW) at 8:51 PM on Thursday the 11th, 1.6 ft above normal (7.5 ft MLLW) at 9:34 PM on Friday the 12th, 1.8 ft above normal (7.7 ft MLLW) at 10:20 PM on Saturday the 13th, 1.9 ft above normal (7.8 ft MLLW) at 11:10 PM on Sunday the 14th, 1.7 ft above normal (7.5 ft MLLW) at 12:02 AM on Tuesday the 16th, and 1.5 ft above normal (7.3 ft MLLW) at 12:56 AM on Wednesday the 17th. High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively.
What to Do
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Areas Impacted
- North Bay Interior Valleys
Tips to Stay Safe
A Flood Advisory is issued when flooding may cause significant inconvenience, or even become dangerous if you are not careful. Know your risk at home, work and school, and use caution when flooding is expected.
- Be aware of low-lying areas along your travel routes that are most likely to flood.
- Check road conditions before traveling, and obey road closures and barricades.
- Never walk, swim, or drive through flood waters.
- Stay tuned for local weather updates on the situation as it develops.
Briefings
From the Forecaster
Hot Friday
Created by the NWS San Francisco WFO
Moderate HeatRisk is anticipated today across much of the East Bay and South Bay. Moderate HeatRisk means members of heat-sensitive groups will experience negative heat-related health effects, including heat illnesses. Be sure to drink plenty of water, do not leave children or pets in unattended vehicles. Take frequent breaks in air conditions (if applicable) or shade. Shift activities outdoors to cooler times of day.
Seven-day Weather Risk Overview
The graphic shows the daily risk summary for 7 days. Daily risk is based on highest risk factor for that day.
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