The aim of this report is to organize and synthesize our various sources of fire information. In particular, the report will shed light on the fire information we gather, what that information is saying about a fire, as well as when that information is relevant.
Report generated: 2025-06-24 19:17 UTC
Fire information (such as fire ignition time, acres, or type) is gathered from the National Interagency Fire Center (NIFC) in the US and the Canadian Interagency Forest Fire Centre (CIFFC) in Canada. NIFC data is pulled from two sources: fire points and fire perimeters databases. Data from NIFC is reported as origination from IRWIN and/or 209 reports. Canadian data is pulled from two sources: fire points from CIFFC and fire perimeters from the respective provinces.
Reported official daily acres from the points and perimeters databases. When multiple instances of time are avalable from a source, multiple are plotted.
NOTE: for Canadian fires, the reported acres from points vs perimeters may be different based on if acres data sourced from province agencies account for acres which cross provincial boundaries.
In summary for Canadian fires,
Perimeter data = Province agency data
Points data = CIFFC data
| Discovery Datetime | 2025-06-12 13:24:00 |
|---|---|
| Last modified | 2025-06-23 23:45:42 |
| Latest reported acres | 46997.0 |
| Fire Cause | Undetermined |
| Fire type | WF |
| Percent Contained | 33.0 |
| Last 209 report | 2025-06-23 23:45:42 |
|---|---|
| Report status | Updating |
| Latest report acres | 46997.0 |
Satellite fire detections are a good tool for tracking a fire's activity in real time more than reported information. The following section makes use of assigned satellite fire detection data (via 10km buffer from latest perimeter, dating back to ignition date).
Fire detections by satellite source over time. Gray dashed lines are the dates of issued ICS 209 reports if applicable
Daily cumulative count of fire detections by satellite source from discovery up to the latest date of associated fire detections vs. daily reported acres (from perimeters and points datasets combined)
The plot below shows the reported acres (from perimeters dataset) vs. the cumulative count of satellite fire detections from discovery UP TO and including the date of that report. And OLS model fit line was fit to the datapoints and is plotted below. The modelled R2 is reported in the corner. To compare different satellite sources, select from the drop down. This plot gives a general idea of how well "detected" and estimated the fire is by satellites.
While the above satellite fire detection timeseries is interesting, it does not give any indication of "new" growth vs continued burning or smouldering.
In order to visualize and determine days of fire spread/growth, we have defined a 750m grid over the boundary of the fire (latest fire footprint). For each day from the first satellite fire detection to the last detection, grid cells which contain detections are identified. The following graphics make use of this grid data.
The timeseries below identify dates of new growth by plotting the cumulative sum of new grid cells containing satellite fire detections. Each grid cell is only counted once.
The proportion of burning grid cells each day that are new cells not previously burned, and cells which have been previously burned in the timeframe
The following section makes use of the assigned satellite fire detection data and its associated data like fire radiative power (FRP).
| source | frp |
|---|---|
| g18 | 1916785.200 |
| g19 | 1142667.800 |
| hmsg19 | 1137084.881 |
| hmsviirsnoaa | 42087.917 |
| hmsviirssuomi | 34575.514 |
| modisaqua | 37823.832 |
| modisterra | 21897.238 |
| viirs375 | 21257.400 |
| viirs750 | 31819.039 |
| viirsnoaa375 | 28671.710 |
Like the previous plot which compared cumulative fire detections to reported acres, the plot below considers the effectiveness of using summed FRP as a means of modelling fire acres.