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Half Moon Bay Today
By the People, for the People
Half Moon Bay Block On Lockdown As Police Sweep Coastside Street
Residents near Beach Ave and Pilarcitos Ave told to shelter in place during police activity
Published on Feb. 27, 2026
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Residents near Beach Avenue and Pilarcitos Avenue in Half Moon Bay were told to shelter in place indoors on Monday after an urgent police activity alert was issued by San Mateo County. The initial county alert did not provide details on what prompted the response, only that people in the area should stay inside while officers worked the scene.
Why it matters
This is the latest in a string of similar shelter-in-place orders issued by San Mateo County for the coastside area, raising concerns about public safety and the frequency of police activity in the region.
The details
According to CAL FIRE CZU, the San Mateo County (SMC) Alert instructed people in the Beach Ave and Pilarcitos Ave area to shelter in place while police activity was underway. The county's guidance for sheltering in place includes going inside, locking doors and windows, shutting off heating or cooling systems, and limiting phone use to emergencies.
- The initial SMC Alert was sent out on Monday, February 20, 2026.
The players
San Mateo County
The county government that issued the shelter-in-place order and SMC Alert for the Half Moon Bay neighborhood.
CAL FIRE CZU
The California Department of Forestry and Fire Protection unit that credited the county alert as the source of the shelter-in-place order.
What’s next
Officials have not released any information about arrests or injuries related to the police activity. Residents in the affected Half Moon Bay area are being urged to stay indoors and keep an eye on official county or local agency channels for the next update.
The takeaway
This incident highlights the ongoing public safety concerns and frequency of police activity in the Half Moon Bay and broader coastside region of San Mateo County, raising questions about the underlying causes and community response.
