fwi_1111_bc: British Columbia Fire Weather Index — 11 November 2023

In SSIMmap: The Structural Similarity Index Measure for Maps

British Columbia Fire Weather Index — 11 November 2023

Description

Daily Canadian Fire Weather Index (FWI) for British Columbia, Canada, on 11 November 2023, at a 2 km spatial resolution. This is the late-fall observation used in the package summer-fall comparison. It is distinct from the unchanged legacy fwi_1101_bc data.

Usage

fwi_1111_bc

Format

A packed terra raster object with one numeric FWI layer, 895 rows and 510 columns, at 2,000 m resolution in EPSG:3978.

Details

The original FWI raster was cropped and masked to the 2021 British Columbia provincial boundary, with no resampling or value transformation. Its grid matches fwi_0816_bc and fwi_0818_bc. The data are stored using terra::wrap(); use terra::unwrap() before calculation. Use transform = "none" in ssim_raster to reproduce the manuscript's original-unit FWI analysis; "none" is also the function default from version 0.4.2. See the installed ‘extdata/fwi_1111_bc_provenance.txt’ for source and preparation checksums.

Source

Natural Resources Canada, Canadian Forest Service, Canadian Wildland Fire Information System (CWFIS), https://cwfis.cfs.nrcan.gc.ca/. Historical FWI coverage for 2023-11-11, independently retrieved on 2026-10-27 and verified cell-for-cell against the original source raster ‘fwi20231111.tif’. Contains information licensed under the Open Government Licence – Canada. Crop boundary: Statistics Canada, 2021 provincial boundary.

Examples

data("fwi_1111_bc")
fwi_1111 <- terra::unwrap(fwi_1111_bc)
terra::plot(fwi_1111, main = "FWI - 11 November 2023")

SSIMmap documentation built on Nov. 13, 2026, 5:09 p.m.