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!

Photo of a swiftly flowing river from an April 13 Facebook post by Sequoia and Kings Canyon National Parks. Sequoia and Kings Canyon National Parks


SF Chronicle, May 29, 2023

Map shows epic amounts of water gushing through California rivers

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Graphic showing the typical impact of El Niño on the jet stream and winter weather in the United States. NOAA Climate.gov

El Niño

SF Chronicle, May 21, 2023

Predicting whether the upcoming winter will bring even more wet weather to California is complicated.

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Satellite image of the Sierra snowpack on April 6, 2023. NASA’s Earth Observatory

Climate whiplash

SF Chronicle, May 04, 2023

Satellite images show dramatic swings of California’s snowpack.

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