September Weather Recap

September Weather Recap
Posted in: Kari's Korner
By Kari Strenfel
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September Weather Recap

My AcuRite Atlas Charts and Details

California’s 2020 historic fire season continued through a hot and dry September, with some days seeing the worst air quality the Bay Area and Northern California have experienced. Stay updated on the status of all the current fires (location, percent contained, acres burned, structures destroyed) by visiting CalFire’s Map. This interactive tool gives you access to everything you need to keep an eye on fire progression as this fire season continues into October and possibly November.  

As a reminder, the Santa Ana winds in Southern California peak in October, which is when we see the traditional fire risk increase, as it brings in dry, hot desert air from the east. In Northern California, we also see this pattern, but they're called the Diablo wind events. Remember, it’s never too late to brush up on ways to prepare yourself and your home for fire season to reduce your risk. 

Reports From My AcuRite Atlas™ Weather Station

The picture above was taken on Sept. 9, 2020, and is of my wireless weather station (the AcuRite Atlas ™ with lightning detection) located in the Bay Area. This was the week the region saw the worst air quality in the world, with most air quality reports exceeding hazardous conditions. The high heat event from Sept. 6-8 created dangerous conditions for wildfire management and allowed the wildfires to continue to spread. The smoke from these fires lingered over Northern California for a solid week, creating dangerous conditions for any outdoor activity. We could smell smoke even getting the mail or taking out the trash.

My AcuRite report shows the high temperature recorded during this heat wave occurred on Sept. 6 with a high temperature of with 116.7 °F (47.1 °C). This was another reason to stay indoors! Not only do these extremely hot temperatures with dry air help to quickly dry out the vegetation, but they also help to preheat the fuels, allowing for more rapid fire spread in areas that are already burning. This exacerbates the fire management efforts to get the fire perimeter contained.

Let’s look at how my record high temperature for the month compares to local Northern California National Weather Service reports and Bay Area September temperature records. See the lists below for record-breaking temperatures reported across the region! Many locations, such as Napa, Gilroy, Santa Rosa, etc., saw their all-time high record temperatures at or above 110 °F (43.3 °C).

Recorded high temperatures
Recorded high temperatures

Further Reading:

Do you recall the Camp Fire in 2018 that ravaged Paradise, California? Learn how this group Rebuilds in Paradise with AcuRite weather tools. Meanwhile, back East, learn how the Flametamers Wildland Fire Crew in Philadelphia prepares for fire season with an AcuRite 5-in-1 weather station for their mobile command center and an AcuRite Atlas™ installed at the fire department.  

Share and Discuss:

What did your September weather look like? How did it compare to regional weather events? What were your September high and low temperatures? Share and discuss your September weather report in the comments below!

October 14, 2020
Don Kovac
October 16, 2020 at 12:57 PM
Preface: I am new to this type of information. 1) I did not notice any information on air quality? Did I miss it or is that not covered in this blog. I feel it is very important for people that have breathing problems. A report on how air quality is measured and what levels of PPM (parts per Million) can be harmful. From my uneducated vision it appears that the air is especially dirty -probably with particles from the fires. 2) I also see much information about northern California but I could not find information for southern California.
AcuRite Team
October 19, 2020 at 1:59 PM
This recap consists of the station readings from our Meteorologist's Atlas Weather Station, located in Northern California. The data is specific to her location. Since our sensors do not currently measure air quality, this information is not found in this report. If you have further questions, please let us know!