Fire perimeters for incidents before June 18, 2021 are based on infrared and thermal imaging from NASA’s MODIS and VIIRS-I products.<\/p>\n
The perimeters are intended to provide an idea of the scope and extent of the fires with the most current data possible. They are an approximation and do not include all areas affected by fire, nor do they indicate with certainty an area was affected. Agencies use this data to help identify fires and their hot spots. But because of the distance of the satellites, the nature of the measurements and obfuscation by smoke, the resolution is coarse and not 100 percent accurate.<\/p>\n
Hot Spots<\/p>\n
Hot spots are locations identified by satellite analysts from the National Oceanic and Atmospheric Administration (NOAA).<\/p>\n
The hot spots are an approximation and do not include all areas affected by fire, nor do they indicate with certainty an area was affected. Agencies use this same data to help identify fires and their hot spots. But because of the distance of the satellites, the nature of the measurements and obfuscation by smoke, the resolution is coarse and not 100% accurate.<\/p>\n
NOAA’s Hazard Mapping System Fire and Smoke Product<\/a> (HMS) is based on locations of fires and significant smoke plumes detected by meteorological satellites. Hot spots are updated between 5 a.m. and 7 a.m. every 30 minutes, and otherwise as time permits. Hot spots should be considered points with no radius or resolution. The current map may contain hot spots up to 48 hours old.<\/p>\n National Weather Service Risk Layers<\/p>\n Fire risk data come from National Weather Service and are updated once every hour. We display the following alerts on our map: Red Flag Warnings, Fire Weather Watches, High Wind Warnings and Wind Advisories.<\/p>\n Evacuation Zones<\/p>\n Evacuation zones are based on latest updates issued by CalFire<\/a>, and will be updated every 30 minutes. Please check with your local agency to confirm evacuation status.<\/p>\n This site is protected by reCAPTCHA and the Google Privacy Policy<\/a> and Terms of Service<\/a> By subscribing, you agree to our Terms of Use<\/a> and acknowledge that your information will be used as described in our Privacy Notice<\/a>.<\/p>\n![\"logo\"](\"https:\/\/www.newsbeep.com\/us-ca\/wp-content\/uploads\/2025\/10\/sf-square-black.png\"\/)
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