Bay Area Weather Update: Severe Thunderstorm Warning And Forecast

Mei Lin

3 min read

Post on May 13, 2025

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Current Severe Thunderstorm Warning and Affected Areas

A severe thunderstorm warning is currently in effect for portions of the Bay Area, impacting residents and commuters alike. This warning covers significant areas of Alameda, Contra Costa, and Santa Clara counties, specifically impacting cities like Oakland, Berkeley, San Jose, and surrounding communities. The warning is active from 2:00 PM to 7:00 PM PST.

The primary hazards associated with this severe weather include:

• High Winds: Gusts exceeding 50 mph are possible, leading to downed trees and power lines.
• Heavy Rainfall and Potential Flooding: Rainfall rates of 1-2 inches per hour are expected, increasing the risk of flash flooding in low-lying areas and urban streets. Rapid rises in creeks and streams are also likely.
• Possible Hail: Hailstones up to 1 inch in diameter are possible, causing damage to property and vehicles.
• Risk of Lightning Strikes: Lightning poses a significant danger; seek immediate shelter if you hear thunder.

Detailed Thunderstorm Forecast for the Bay Area

The Bay Area can expect continued unsettled weather over the next 24-48 hours. While the severe thunderstorm warning may expire at 7:00 PM, scattered thunderstorms are anticipated throughout the evening and into Wednesday morning. Rainfall amounts will vary across the region, with higher totals expected in the North Bay and East Bay hills.

Key forecast elements include:

• Hourly Precipitation Forecast: Expect periods of heavy rain interspersed with lighter showers throughout the night.
• Wind Speed Predictions: Strong winds will persist, gradually diminishing overnight. However, gusts could still reach 30-40 mph in exposed areas.
• Temperature Fluctuations: Temperatures will remain relatively mild, but expect a noticeable drop overnight as the storm system passes.
• Expected Clearing Times: Significant clearing is not expected until late Wednesday afternoon, with lingering cloud cover possible into Thursday.

Safety Precautions and Emergency Preparedness

Your safety is paramount during severe thunderstorms. Take these precautions seriously:

• Seek Shelter Indoors: Move to a sturdy building away from windows as soon as you hear thunder.
• Unplug Electronic Devices: Power surges from lightning can damage electronics.
• Avoid Contact with Water and Metal Objects: These are excellent conductors of electricity.
• Monitor Weather Alerts: Stay updated via NOAA Weather Radio, local news, or weather apps.
• Have an Emergency Kit Ready: Your kit should include flashlights, batteries, water, and non-perishable food.

Links to helpful resources:

Bay Area Road Conditions and Transportation Impacts

The severe weather is likely to significantly impact Bay Area roads and transportation. Expect potential road closures, delays, and hazardous driving conditions due to flooding, downed trees, and reduced visibility.

Key transportation impacts include:

• Highways Affected: Monitor Caltrans Quickmap for real-time highway conditions and closures.
• Public Transport Delays: Expect delays and potential cancellations for BART, Muni, and other public transportation systems.
• Potential for Accidents: Drive cautiously and avoid unnecessary travel.
• Advice on Alternative Routes: Use navigation apps to check for alternative routes and avoid flooded areas.

Conclusion: Stay Informed with Our Bay Area Weather Updates

This Bay Area Weather Update: Severe Thunderstorm Warning and Forecast highlights the urgent need for preparedness and caution. Remember the key takeaways: monitor weather alerts, take necessary safety precautions, and avoid unnecessary travel. Stay informed about changing conditions by checking back frequently for the latest Bay Area weather updates and severe thunderstorm warnings. Stay safe and check back frequently for the latest Bay Area weather updates and severe thunderstorm warnings. Share this important information with your friends and family!