Rain returns Fri night thru Sat night, lingering showers on Sunday

5am PDT Fri Apr 12. Note the approaching cold front.

5pm PDT Fri Apr 12. Cold front is still approaching the Bay Area.

5pm PDT Sat Apr 13. Cold front has passed, low pressure system is over the Bay Area centered offshore, bringing southwest winds which means warm moist air. This will likely lead to unstable conditions which may result in thunderstorms and hail, particularly for the southern coastal portions of the Bay Area (off the coast of Santa Cruz Co and the Monterey Bay).

ACTIVATION Thurs Apr 4 and Fri Apr 5

The SF Bay Area Skywarn group will be activated April 4 and 5. SF Bay Area Skywarn members should monitor the K6MPN repeater (444.500 MHz, +5.0 MHz offset, PL=100Hz CTCSS tone) for severe weather and storm damage reports, and make reports as appropriate. Please keep in mind that we are SECONDARY users on the K6MPN repeater, which is a primary resource for the South County Amateur Radio Emergency Service (SCARES) group. If you are a NWS-trained weather spotter, you may submit storm reports directly to the NWS Weather Forecast Office in Monterey, CA.

See sfoskywarn.org/alerts for current weather alerts issued by the NWS Weather Forecast Office in Monterey, CA. See https://poweroutage.us/area/state/california for current power outages in CA, listed by county.

Please email photos showing storm related damage or flooding to ckolovson – at – gmail.com.

Stay safe!
73, Curt Kolovson W6RQ
SF Bay Area Skywarn Coordinator

Significant storm today (Thursday) into Friday

Showers starting this morning, followed by possible thunderstorms this afternoon, tonight, and lingering into Friday. Good chance of thunderstorms and small hail due to unstable conditions. Colder than normal temps.

11pm PDT Wed Apr 3. Low pressure system and associated cold front heading our way.

5pm PDT Thur Apr 4. The front will have passed and the low will be right off our coast. As it continues to move south and then east, it will set up a similar situation to what we had last Saturday. Stay safe!!

ACTIVATION starting at 5pm PDT Friday 3/29 on K6MPN and N6NFI repeaters

Starting at 5pm PDT Friday night, 03/29/2024, the SF Bay Area Skywarn group will be activated. I will be monitoring the K6MPN repeater (444.500 MHz, +5.0 MHz offset, PL=100Hz CTCSS tone) and the N6NFI repeater (145.230 MHz, -0.600 MHz offset, PL=100Hz CTCSS tone) for severe weather and storm damage reports. Please keep in mind that we are SECONDARY users on the K6MPN repeater, which is a primary resource for the South County Amateur Radio Emergency Service (SCARES) group.

There are multiple alerts in effect for the SF Bay Area issued by the NWS WFO in Monterey, CA. See sfoskywarn.org/alerts for details. See https://poweroutage.us/area/state/california for current power outages in CA, listed by county.

Please email photos showing storm related damage or flooding to ckolovson – at – gmail.com.

Stay safe!
73, Curt Kolovson W6RQ
SF Bay Area Skywarn Coordinator

Impactful storm this afternoon through Saturday

Key Points:
* Impactful weather system today into Saturday
* Moderate wind and water impacts anticipated
* Strong wind gusts may cause tree and power line damage
* Minor flooding potential from locally heavy rainfall
* Isolated thunderstorms with lightning and small hail
* Peak impacts this afternoon into Saturday evening

5pm PDT Friday Mar 29 forecast:

Possible heavy winds, t-storms, and small hail today and tonight

NWS OPC forecast for 00Z Sun Mar 24 (5pm PDT Sat Mar 23). Front has passed. A series of minor surface troughs will be passing through, which could bring some isolated locally heavy winds, t-storms, and small hail.

12Z Mar 23 (5am PDT Mar 23) surface analysis shows surface trough that has already passed through. This was the minor trough of concern. Others may follow, such as the approaching one shown in the 00Z Mar 24 forecast above.

18Z Mar 23 (11am PDT Mar 23) sfc analysis:

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