![]() ![]() Other factors can also affect detection performance and contribute to omission errors, including obscuration by terrain and/or forest canopies, clouds, and proximity to water bodies where the land/water separation by the algorithm may be imperfect. Increasing satellite view angles (or distance between the fire and the satellite sub-point or image center line) will lead to pixel area enlargement, effectively degrading the spatial resolution of the data and requiring larger fire areas for detection. ![]() For example, a fire must have an active area ≥ 100m 2 to enable detection by a satellite pixel with an effective resolution of 1km. With that being said, traditional satellite fire detection algorithms currently used with the MODIS, VIIRS and GOES fire products begin to respond to active fires occupying a relatively small fraction (≥ 0.01 %) of the pixel footprint (assuming an average fire temperature of ≥ 800 K). Fire detection is largely a function of spatial resolution, with coarser data sets typically requiring larger and/or more intense fires for a successful detection compared to higher spatial resolution ones that can resolve smaller and/or less intense fires. There isn’t an absolute size above which one can expect a fire detection from satellites. To: “Satellite, Start, End, Density”, whereĭensity is defined as “ Satellite, Start, End, Density”, where density is defined as To: “Lon, Lat, YearDay, Time, Satellite, Method,įrom: “YearDay, Time, Satellite, Method of Detection”įrom: hms_smokeYYYYMMDD.zip ( includes *.shp, *.dbf, *.shx, *.prj extensions)įrom: “Satellite, Start, End, Density”, where density is definedĭensity”, where density is defined as Lat, Satellite, Source, YearDay, Time, Ecosys” To: “Lon, Lat, YearDay, Time, Satellite, Method, Ecosystem,įrom: hms_fireYYYYMMDD.zip ( includes *.shp, *.dbf, *.shx, *.prj extensions) Or concerns please feel free to contact the HMS team at: YYYYMMDD sub-string below describes the calendar year, month, and day.įrom: “Lon, Lat, YearDay, Time, Satellite, Method of Detect, Ecosys, Fire RadPower” The new data will replace the existing data available through the URL: Will be available for testing through the URL: The details involving each dataset and file format can be found These upgrades include changes to filename convention and dataĬontent and/or formatting and will take effect on 19 July 2022. Real-time (forward processing) fire and smoke data files as well as the historical records, If you would like to obtain information about a CAL FIRE fire burning in your area that is not included on this web site, please contact the CAL FIRE Unit that services your county.T he HMS system is undergoing software upgrades that will impact both near However, the majority of those fires are contained quickly and no information will generally be provided on these incidents at this site if the fire burns less than 10 acres. Fires occur throughout the State within CAL FIRE jurisdiction on a daily basis during fire season. If you live in a wildland area always have an evacuation plan in place. Please refer to the fire information phone numbers provided on this site, and website links for additional information, and monitor your local radio stations for emergency broadcasts. The sites are not meant to provide up-to-the-minute evacuation or fire behavior information. Please use the information on these pages only as a reference. ![]() As battling a fire, or handling any other disaster is the priority, updates to these sites cannot be guaranteed on a set time schedule. All of our information comes from the firelines and must be approved by the Incident Commander in charge of managing the incident prior to release. This site provides general information concerning an incident. We make every effort to provide accurate and complete information, however the data is subject to review and change. Information presented on the departments website is a representation of the existing wildfire situation, based on the information readily available to CAL FIRE. ![]()
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