Sonoma County Wildfire Awareness Tools
Above is a fresh image from the fastest but least accurate satellite heat detection system, called GOES-17. Compare the timestamp on the map to the current time: this image should be less than six minutes old. You can reposition the map and zoom in and out. Hot spots are detected where you see colored rectangles. Each rectangle is roughly 2 Km x 2 Km (1.25 x 1.25 mi). This does not reliably show you boundaries for a given fire, but it tells you there's probably fire or smoke somewhere inside that area. The color of the rectangle indicates how old the report is:
MODIS and VIIRS are different satellites that are more accurate, with a visual resolution of .6 miles and .22 miles, respectively. Inside that range, they cannot further differentiate where heat/smoke are. These satellites only pass overhead once or twice per day.
Hot spots appear as asterisks. Here again, colors indicate the age of the hot spot report:
You can zoom in to see more information like the time of the flyover and the measured ground temperature associated with each hotspot.
Access both of these maps directly at https://caltopo.com/map.html#ll=38.18207,-122.64862&z=8&b=om
Known Fire Starts
Click here to see known fire starts, as identified by GIS professionals from emergency agencies and social media.
911 fire calls could indicate a problem before satellites can see it. Below are the active fire and medical 911 calls in Sonoma County. Note you can also see these calls displayed in "map view."
You can click https://www.broadcastify.com/listen/ctid/231 to listen to 911 dispatch. Don't trust everything you hear: first reports are often inaccurate.
You can check live cameras on many North Bay mountaintops to look for fires. Click http://beta.alertwildfire.org/northbay/?camera=Axis-BarnhamNorth to go to that site.
The county of Sonoma lists the current evacuation orders and evacuation warnings here. You can zoom in to see more detail.
Sometimes the map lags the actual orders by a few minutes. County of Sonoma emergency announcements may show up here first: Tweets by CountyofSonoma
To access County of Sonoma emergency pages directly: https://socoemergency.org/
Wind, particularly at higher elevations, can be a powerful force in fire growth. Here are the current wind conditions and forecast. (Scroll right for subsequent days.)
- Current Watches, Warnings and Advisories for Sonoma (CAC097) California Issued[…] Dec 1, 2022 | 10:41 am
...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM PST FRIDAY... * WHAT...Sub-freezing temperatures of 25 to 32 degrees expected. * WHERE...North Bay Interior Mountains and North Bay Interior Valleys. * WHEN...From 11 PM this evening[…]Read more...
Here's a live map of air pollution due to smoke. Green numbers are normal. Anything else is unusual. You can zoom in to your exact location.
To access this page directly: https://www.purpleair.com/map?opt=1/m/i/mAQI/a10/cC4#9.72/38.3779/-122.6859
There's also a national weather service experimental smoke forecast page here: https://hwp-viz.gsd.esrl.noaa.gov/smoke/index.html
When fire weather is expected, PG&E may cut power. During a wildfire, many customers will usually lose power. If a "public safety power shutdown" is planned, you'll see an alert message below. (You can dismiss it by clicking "continue.") On the map, you can then select current or future outages.
To access this page directly: https://pgealerts.alerts.pge.com/outages/map/
Wildfire Fuel Mapper
We're Sonoma County's NPR station and we report on all major local emergencies. Please tune to 104.9 FM for the latest. Or, you can click here to listen to a live stream, or follow our reporting on www.krcb.org. Or, follow us on twitter: