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January Newsletter


Happy New Year! We wish you well as you embark on a new semester.


Image of Mr. Dev, Public Health Teacher of the Year for 2022

Congratulations to our Public Health Teacher of the Year for 2022, Ravi Dev Anandhan from Sierra Madre Middle School! 🎉👏

Mr. Dev facilitated Operation Mosquito G.R.I.D. with 150 students! His hard work and determination led to the highest completion rate among all participating teachers. Thank you, Mr. Dev, for emphasizing the importance of mosquito control and public health to your middle school students.


If you’re looking for some weather and climate lessons then you’re in luck!

Atmospheric rivers

The National Oceanic and Atmospheric Administration (NOAA) breaks down atmospheric rivers and how they’re studied. Click the button to see their description and images.

What is the atmospheric river that is soaking California?

Short Wave by NPR breaks down atmospheric rivers, how climate change is leading to more of them, and why they’re more common on the west coast.

CA intense winter rains

Learn about cold-frontal rainbands storms and what a recent study found that will help gain more accurate predictions of potentially dangerous events.

Climate Change Impacts on CA

The Legislative Analyst’s Office (LAO) of California published climate change impacts affecting California. Learn more about LAO’s five key climate hazards, their impacts, and what the state can do to address these issues.


Truth or Myth?: We do not have mosquitoes during winter in Southern California.

  • True

  • False

And the correct answer is...

This is a MYTH! Mosquitoes persist throughout the year in Southern California.

Our underground storm drain teams monitor mosquito populations throughout the winter as underground storm drain temperatures can remain much warmer than ambient temperatures, making for ideal mosquito living conditions.

Video: Mosquitoes thriving in winter

Check out the video from our sister agency showing mosquitoes thriving in underground storm drains during winter.

For more mosquito-related information, visit the San Gabriel Valley Mosquito and Vector Control Website.

Submit your own mosquito or mosquito-borne disease related question!

We will answer submitted questions in future newsletters!

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