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Santa Cruz issues partial mask order, Kelvin wave pushes up local sea levels

A doctor in a mask gives a shot in the arm of a patient also wearing a mask.
Credit: Richard Green/Salinas Valley Healthcare System
A doctor gives a Covid-19 vaccine shot to a patient in this file photo. From Nov. 1 to March 31, masks will be required for non-patients in certain Santa Cruz County health centers.

In today's newscast:

Higher sea levels from bulge of water

A Kelvin wave has pushed local sea levels unusually high recently.

Trade winds across the equator usually push water west towards Indonesia. But some years those winds break down.

Director of the Center for Coastal Climate Resilience at UC Santa Cruz Michael Beck says when that happens, westerly winds can reverse the course.

 "It pushes that bulge of water back over the Pacific towards us. It hits South America, and then it crawls up our coast," he said.

These bulges of water, called Kelvin waves, can raise sea levels by several inches for weeks at a time. One is passing now. One more is projected to reach the West Coast in a few weeks.

Beck says Kelvin waves plus winter storms and high tides could spell trouble later this year.

"All across California, we're seeing municipalities beginning to get ready," he said.

The Center for Coastal Climate Resilience is studying risks and solutions including dunes, offshore reefs and seawalls.

Santa Cruz County health order

As respiratory viruses sweep through the Central Coast, Santa Cruz County Health Officer Dr. Lisa Hernandez’s message is simple: mask up to protect the most vulnerable.

Hernandez issued a health order requiring that all non-patients in skilled nursing facilities and infusion centers wear masks. That includes dialysis and chemotherapy centers. 

“ I want to focus on the highest risk individuals,” she said.

The order takes effect Nov. 1 and lasts through March 31, 2027.

Seasonal viruses including the flu and COVID ramped up a few weeks early this year. Hernandez says those who are eligible should get vaccinated right away and consult with their provider if they have questions.

Other ways to stay safe include staying home when sick, covering coughs and washing your hands often.

Erin is an award-winning journalist and photographer. She's written for local and national outlets, including the Smithsonian and Science Magazine. She has a master's degree in science communication from the University of California, Santa Cruz.
PK Hattis joined the KAZU News team as a reporter/producer/host in 2026. A home-grown local journalist through and through, PK was born and raised in Santa Cruz County and has been reporting on Central Coast communities since 2020. Before coming aboard at KAZU, he worked for more than four years at the Santa Cruz Sentinel newspaper where he covered the county Board of Supervisors, healthcare and transportation beats, among others. He also hosted KSQD's flagship public affairs show "Talk of the Bay" for more than two years.