Hello! I’m Jack, a weather science data reporter with the San Francisco Chronicle.

I’m part of the California Weather Wonks, a small but mighty team dedicated to explaining the how and why behind weather in the S.F. Bay Area and California.

My path to science journalism has taken a few twists and turns. I earned a Ph.D. in molecular biology at Princeton Unversity and worked as a data engineer before completing the science communication program at UC Santa Cruz. Since then, I’ve written about a variety of science topics, from dinosaur eggs to heat waves to cancer prevention, through internships and as a freelancer.

Now, I’m excited to have the opportunity to dive into datasets and talk with scientfic experts, to share the fascinating story of Bay Area weather!

Image of a 2019 atmospheric river from NOAA's GOES-17 satellite NOAA

Atmospheric rivers

SF Chronicle, Dec. 30, 2022

Rivers in the sky replenish California’s water supplies, but also cause widespread flood damage.

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NOAA's Gulfstream IV-SP takes off from Lakeland Linder Regional Airport. Lt. Kevin Doremus / NOAA

Hurricane Hunters

SF Chronicle, Dec. 27, 2022

Recon flights provide atmospheric river data that improves weather models and could transform California’s reservoir levels during drought.

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The Surface Water and Ocean Topography (SWOT) spacecraft is moved into a transport container at Vandenberg Space Force Base. USSF 30th Space Wing/Chris Okula


SF Chronicle, Dec. 12, 2022

The Surface Water and Ocean Topography satellite could provide an unprecedented view of S.F. Bay Area waters.

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