USFS Wildfire Risk to Communities

The histogram of a dataset's pixel values inside a supplied polygon or envelope, as bin counts with the minimum, maximum and bin size.

Minimum, maximum, mean, median, mode, standard deviation and sum of a dataset's pixels inside a supplied polygon or envelope.

Field-validated soil burn severity at a point for Burned Area Emergency Response incidents from 2017 onward: unburned to very low, low, moderate or high. Pixel classes: Unburned to very low | Low | Moderate | High | Masked (Developed).

The dataset's catalogue record: abstract, methods summary, tags, funding and author credits, and the licence and citation text the Forest Service attaches to it.

The precomputed histogram of pixel values over the dataset's whole extent, as bin counts with the minimum, maximum and bin size.

Service metadata for one dataset: spatial extent, pixel type, band count, minimum, maximum and mean pixel values, cell size, available raster functions and server capabilities.

Queries the mosaic catalogue behind a dataset, returning one record per contributing raster with its name, product name, cell size and tags.

Raster key properties for a dataset: native cell size, data type, band properties and the mosaic fields available for filtering catalogue items.

The rendered legend for a dataset: every class label with its swatch, which is how an integer pixel value is translated into a human class such as "Directly Exposed" or "1-in-100 to 1-in-46".

Lists every USDA Forest Service Fire and Aviation image and map service published on the GeoPlatform imagery server, with each service's name and type.

Joint mature and old growth forest abundance class at a point, summarised from Forest Inventory and Analysis plots to Fireshed Registry units, federal lands only. Pixel classes: Low Mature, Low Old Growth | High Mature, Low Old Growth | Moderate Mature, Low Old Growth | Moderate Mature, Moderate Old Growth | High Mature, Moderate Old Growth | Low Mature, Moderate Old Growth | Moderate Mature, High Old Growth | Low Mature, High Old Growth | High Mature, High Old Growth.

Annual burn probability at a point from the FSim national probabilistic wildfire risk run on end-of-2020 landscape conditions, covering CONUS, Alaska and Hawaii. Pixel classes: 0 | 0 to 1-in-10,000 | 1-in-10,000 to 1-in-4,643 | 1-in-4,643 to 1-in-2,154 | 1-in-2,154 to 1-in-1,000 | 1-in-1,000 to 1-in-464 | 1-in-464 to 1-in-215 | 1-in-215 to 1-in-100 | 1-in-100 to 1-in-46 | 1-in-46 to 1-in-22 | 1-in-22 to 1-in-10 | 1-in-10 to 1-in-8.

Conditional probability that flame length falls in the 0 to 2 foot class at a point, given a fire, from the FSim national run. Pixel classes: 0 | >0 - 0.09 | 0.10 - 0.19 | 0.20 - 0.29 | 0.30 - 0.39 | 0.40 - 0.49 | 0.50 - 0.59 | 0.60 - 0.69 | 0.70 - 0.79 | 0.80 - 0.89 | 0.90 - 1.

Conditional probability that flame length falls in the 2 to 4 foot class at a point, given a fire, from the FSim national run. Pixel classes: 0 | >0 - 0.09 | 0.10 - 0.19 | 0.20 - 0.29 | 0.30 - 0.39 | 0.40 - 0.49 | 0.50 - 0.59 | 0.60 - 0.69 | 0.70 - 0.79 | 0.80 - 0.89 | 0.90 - 1.

Conditional probability that flame length falls in the 4 to 6 foot class at a point, given a fire, from the FSim national run. Pixel classes: 0 | >0 - 0.09 | 0.10 - 0.19 | 0.20 - 0.29 | 0.30 - 0.39 | 0.40 - 0.49 | 0.50 - 0.59 | 0.60 - 0.69 | 0.70 - 0.79 | 0.80 - 0.89 | 0.90 - 1.

Conditional probability that flame length falls in the 6 to 8 foot class at a point, given a fire, from the FSim national run. Pixel classes: 0 | >0 - 0.09 | 0.10 - 0.19 | 0.20 - 0.29 | 0.30 - 0.39 | 0.40 - 0.49 | 0.50 - 0.59 | 0.60 - 0.69 | 0.70 - 0.79 | 0.80 - 0.89 | 0.90 - 1.

Conditional probability that flame length falls in the 8 to 12 foot class at a point, given a fire, from the FSim national run. Pixel classes: 0 | >0 - 0.09 | 0.10 - 0.19 | 0.20 - 0.29 | 0.30 - 0.39 | 0.40 - 0.49 | 0.50 - 0.59 | 0.60 - 0.69 | 0.70 - 0.79 | 0.80 - 0.89 | 0.90 - 1.

Conditional probability that flame length exceeds 12 feet at a point, given a fire, from the FSim national run. Pixel classes: 0 | >0 - 0.09 | 0.10 - 0.19 | 0.20 - 0.29 | 0.30 - 0.39 | 0.40 - 0.49 | 0.50 - 0.59 | 0.60 - 0.69 | 0.70 - 0.79 | 0.80 - 0.89 | 0.90 - 1.

Estimated time for a firefighter to be evacuated from a point on the ground to a trauma centre, in hour bands up to more than six hours. Pixel classes: 0 to 1 hours | 1 to 2 hours | 2 to 4 hours | 4 to 6 hours | More than 6 hours.

Modelled probability that fire, if it occurs, burns at high severity at a point, from the Next Generation Fire Severity Mapping study of western US ecoregions. Pixel classes: High : 65535 | Low : 0.

Renders a dataset over a bounding box and returns JSON holding the href of the generated PNG together with its extent, width and height.

Monitoring Trends in Burn Severity thematic burn severity at a point in Alaska, for large fires mapped from 1984 onward. Pixel classes: Unburned/Low | Low | Moderate | High | Increased Greenness | Non-processing area mask.

Monitoring Trends in Burn Severity thematic burn severity at a point in the conterminous US, for large fires mapped from 1984 onward. Pixel classes: Unburned/Low | Low | Moderate | High | Increased Greenness | Non-processing area mask.

Monitoring Trends in Burn Severity thematic burn severity at a point in Hawaii, for large fires mapped from 1984 onward. Pixel classes: Unburned/Low | Low | Moderate | High | Increased Greenness | Non-processing area mask.

Monitoring Trends in Burn Severity thematic burn severity at a point in Puerto Rico, for large fires mapped from 1984 onward. Pixel classes: Unburned/Low | Low | Moderate | High | Increased Greenness | Non-processing area mask.

Housing wildfire risk at a point in the Northern Rockies, ranked into quantiles within each national forest rather than across the region. Pixel classes: Most (Top 30%) | High (Next 20%) | Moderate (Next 20%) | Least (Bottom 30%) | Unquantified impact on agriculture and uban core.

Housing wildfire risk at a point in the Northern Rockies, ranked into regional quantiles from least (bottom 30%) to most (top 30%). Pixel classes: Most (Top 30%) | High (Next 20%) | Moderate (Next 20%) | Least (Bottom 30%) | Unquantified impact on agriculture and uban core.

A grid of individual pixel values with their coordinates inside a supplied area, up to the requested sample count.

The pixel value of any dataset in this folder at one point, the generic form of the per-dataset point queries.

Annual burn probability at a point in Oregon and Washington from the 2025 Northwest Coordination Center 30 m risk assessment. Pixel classes: 0 (non-burnable) | >0 - 0.0001000 | 0.0001000 - 0.0002154 | 0.0002154 - 0.0004642 | 0.0004642 - 0.0010000 | 0.0010000 - 0.0021544 | 0.0021544 - 0.0046416 | 0.0046416 - 0.0100000 | 0.0100000 - 0.0215443 | 0.0215443 - 0.0464159 | 0.0464159 - 0.1000000.

Conditional net value change to agricultural land at a point in Oregon and Washington if a fire occurs, from the 2025 NWCC 30 m assessment; negative values are losses. Pixel classes: Very high loss (-0.048745539 to -0.048745532) | High loss (-0.048745532 to -0.0243998) | Moderate loss (-0.0243998 to 0).

Conditional net value change to municipal drinking water supply at a point in Oregon and Washington if a fire occurs, from the 2025 NWCC 30 m assessment; negative values are losses. Pixel classes: Very high loss (-2.104757 to -0.045872) | High loss (-0.045872 to -0.005710) | Moderate loss (-0.005710 to -0.000665) | Low loss (-0.000665 to -0.000001) | Very low loss (-0.000001 to 0).

Conditional net value change to ecological integrity at a point in Oregon and Washington if a fire occurs, from the 2025 NWCC 30 m assessment; negative values are losses. Pixel classes: Very high loss (-9.403773 to -0.021222) | High loss (-0.021222 to -0.018037) | Moderate loss (-0.018037 to -0.004569) | Low loss (-0.004569 to -0.000216) | Neutral (-0.000216 to 0.000216) | Low benefit (0.000216 to 0.004569) | Moderate benefit (0.004569 to 0.018037) | High benefit (0.018037 to 0.021222) | Very high benefit (0.021222 to 9.403773).

Conditional net value change to built infrastructure at a point in Oregon and Washington if a fire occurs, from the 2025 NWCC 30 m assessment; negative values are losses. Pixel classes: Very high loss (-4.373827 to -0.392996) | High loss (-0.392996 to -0.191952) | Moderate loss (-0.191952 to -0.031635) | Low loss (-0.031635 to -0.000052) | Very low loss (-0.000052 to 0).

Conditional net value change to people and property at a point in Oregon and Washington if a fire occurs, from the 2025 NWCC 30 m assessment; negative values are losses. Pixel classes: Very high loss (-14.352185 to -0.050450) | High loss (-0.050450 to -0.019665) | Moderate loss (-0.019665 to -0.007316) | Low loss (-0.007316 to -0.000017) | Very low loss (-0.000017 to 0.

Conditional net value change to recreation infrastructure at a point in Oregon and Washington if a fire occurs, from the 2025 NWCC 30 m assessment; negative values are losses. Pixel classes: Very high loss (-5.928181 to -1.770713) | High loss (-1.770713 to -0.712426) | Moderate loss (-0.712426 to -0.538977) | Low loss (-0.538977 to -0.053963) | Very low loss (-0.053963 to 0).

Conditional net value change to timber value at a point in Oregon and Washington if a fire occurs, from the 2025 NWCC 30 m assessment; negative values are losses. Pixel classes: Very high loss (-0.174071 to -0.072853) | High loss (-0.072853 to -0.034856) | Moderate loss (-0.034856 to -0.017504) | Low loss (-0.017504 to -0.001867) | Neutral (-0.001867 to 0.001867) | Low benefit (0.001867 to 0.017504) | Moderate benefit (0.017504 to 0.034856) | High benefit (0.034856 to 0.072853) | Very high benefit (0.072853 to 0.174071).

Conditional net value change to wildlife habitat at a point in Oregon and Washington if a fire occurs, from the 2025 NWCC 30 m assessment; negative values are losses. Pixel classes: Very high loss (-0.346391 to -0.054414) | High loss (-0.054414 to -0.010000) | Moderate loss (-0.010000 to -0.002833) | Low loss (-0.002833 to -0.000645) | Neutral (-0.000645 to 0.000645) | Low benefit (0.000645 to 0.002833) | Moderate benefit (0.002833 to 0.010000) | High benefit (0.010000 to 0.054414) | Very high benefit (0.054414 to 0.346391).

Expected annual net value change to agricultural land at a point in Oregon and Washington, conditional loss multiplied by burn probability, from the 2025 NWCC 30 m assessment. Pixel classes: Very high loss (-0.002906 to -0.000288) | High loss (-0.000288 to -0.000148) | Moderate loss (-0.000148 to -0.000005) | Low loss (-0.000005 to -0.000002) | Very low loss (-0.000002 to 0).

Expected annual net value change to municipal drinking water supply at a point in Oregon and Washington, conditional loss multiplied by burn probability, from the 2025 NWCC 30 m assessment. Pixel classes: Very high loss (-0.0594773330 to -0.0001850117) | High loss (-0.0001850117 to -0.0000190052) | Moderate loss (-0.0000190052 to -0.0000012883) | Low loss (-0.0000012883 to -0.0000000009) | Very low loss (-0.0000000009 to 0).

Expected annual net value change to ecological integrity at a point in Oregon and Washington, conditional loss multiplied by burn probability, from the 2025 NWCC 30 m assessment. Pixel classes: Very high loss (-0.213801 to -0.000408) | High loss (-0.000408 to -0.000121) | Moderate loss (-0.000121 to -0.000033) | Low loss (-0.000033 to -0.0000005) | Neutral (-0.0000005 to 0.0000005) | Low benefit (0.0000005 to 0.000033) | Moderate benefit (0.000033 to 0.000121) | High benefit (0.000121 to 0.000408) | Very high benefit (0.000408 to 0.213801).

Expected annual net value change to built infrastructure at a point in Oregon and Washington, conditional loss multiplied by burn probability, from the 2025 NWCC 30 m assessment. Pixel classes: Very high loss (-0.088750 to -0.001821) | High loss (-0.001821 to -0.000163) | Moderate loss (-0.000163 to -0.000014) | Low loss (-0.000014 to -0.00000003) | Neutral (-0.00000003 to 0).

Expected annual net value change to people and property at a point in Oregon and Washington, conditional loss multiplied by burn probability, from the 2025 NWCC 30 m assessment. Pixel classes: Very high loss (-0.256866 to -0.000160) | High loss (-0.000160 to -0.000005) | Moderate loss (-0.000005 to -0.0000005) | Low loss (-0.0000005 to -0.000000001) | Neutral (-0.000000001 to 0).

Expected annual net value change to recreation infrastructure at a point in Oregon and Washington, conditional loss multiplied by burn probability, from the 2025 NWCC 30 m assessment. Pixel classes: Very high loss (-0.202743 to -0.009923) | High loss (-0.009923 to -0.001817) | Moderate loss (-0.001817 to -0.000081) | Low loss (-0.000081 to -0.000005) | Neutral (-0.000005 to 0).

Expected annual net value change to timber value at a point in Oregon and Washington, conditional loss multiplied by burn probability, from the 2025 NWCC 30 m assessment.

Expected annual net value change to wildlife habitat at a point in Oregon and Washington, conditional loss multiplied by burn probability, from the 2025 NWCC 30 m assessment. Pixel classes: Very high loss (-0.009305 to -0.000305) | High loss (-0.000305 to -0.000076) | Moderate loss (-0.000076 to -0.000019) | Low loss (-0.000019 to -0.000002) | Neutral (-0.000002 to 0.000002) | Low benefit (0.000002 to 0.000019) | Moderate benefit (0.000019 to 0.000076) | High benefit (0.000076 to 0.000305) | Very high benefit (0.000305 to 0.009305).

Integrated conditional net value change averaged over the HUC12 subwatershed containing a point in Oregon and Washington. Pixel classes: Very high loss (-0.212538 to -0.035445) | (High loss (-0.035445 to -0.022014) | Moderate loss (-0.022014 to -0.012718) | Low loss (-0.012718 to -0.001660) | Neutral (-0.001660 to 0.001660) | Low benefit (0.001660 to 0.012718) | Moderate benefit (0.012718 to 0.022014) | High benefit (0.022014 to 0.035445) | Very high benefit (0.035445 to 0.212538).

Integrated conditional net value change at a point in Oregon and Washington, all highly valued resources and assets combined, if a fire occurs. Pixel classes: Very high loss (-15.447669 to -0.065976) | High loss (-0.065976 to -0.025369) | Moderate loss (-0.025369 to -0.015792) | Low loss (-0.015792 to -0.000759) | Neutral (-0.000759 to 0.000759) | Low benefit (0.000759 to 0.015792) | Moderate benefit (0.015792 to 0.025369) | High benefit (0.025369 to 0.065976) | Very high benefit (0.065976 to 15.447669).

Integrated conditional net value change averaged over the Potential Operational Delineation containing a point in Oregon and Washington. Pixel classes: Very high loss (-0.273401 to -0.034839) | High loss (-0.034839 to -0.018049) | Moderate loss (-0.018049 to -0.009070) | Low loss (-0.009070 to -0.001152) | Neutral (-0.001152 to 0.001152) | Low benefit (0.001152 to 0.009070) | Moderate benefit (0.009070 to 0.018049) | High benefit (0.018049 to 0.034839) | Very high benefit (0.034839 to 0.273401).

Integrated expected annual net value change averaged over the HUC12 subwatershed containing a point in Oregon and Washington. Pixel classes: Very high loss (-0.002506 to -0.000354) | High loss (-0.000354 to -0.000122) | Moderate loss (-0.000122 to -0.000019) | Low loss (-0.000019 to -0.0000003) | Neutral (-0.0000003 to 0.0000003) | Low benefit (0.0000003 to 0.000019) | Moderate benefit (0.000019 to 0.000122) | High benefit (0.000122 to 0.000354) | Very high benefit (0.000354 to 0.002506).

Integrated expected annual net value change at a point in Oregon and Washington, all highly valued resources and assets combined. Pixel classes: Very high loss (-0.258467 to -0.000574) | High loss (-0.000574 to -0.000159) | Moderate loss (-0.000159 to -0.000027) | Low loss (-0.000027 to -0.0000005) | Neutral (-0.0000005 to 0.0000005) | Low benefit (0.0000005 to 0.000027) | Moderate benefit (0.000027 to 0.000159) | High benefit (0.000159 to 0.000574) | Very high benefit (0.000574 to 0.258467).

Integrated expected annual net value change averaged over the Potential Operational Delineation containing a point in Oregon and Washington. Pixel classes: Very high loss (-0.004848 to -0.000309) | High loss (-0.000309 to -0.000129) | Moderate loss (-0.000129 to -0.000034) | Low loss (-0.000034 to -0.000001) | Neutral (-0.000001 to 0.000001) | Low benefit (0.000001 to 0.000034) | Moderate benefit (0.000034 to 0.000129) | High benefit (0.000129 to 0.000309) | Very high benefit (0.000309 to 0.004848).

Potential Control Location likelihood at a point in the conterminous US: how likely a fire could be held at that spot, on a 0 to 100 scale. Pixel classes: Lowest Potential (0-10) | 10-25 | 25-50 | 50-75 | Highest Potential (75-100).

Potential Control Location likelihood at a point in Alaska, on a 0 to 100 scale. Pixel classes: Lowest Potential (0-10) | 10-25 | 25-50 | 50-75 | Highest Potential (75-100).

Annual burn probability at a point from the Quantitative Wildfire Risk Assessment for the conterminous United States, as a decimal probability. Pixel classes: 0.1 - 1 (highest probability) | 0.04642 - 0.1 | 0.02155 - 0.04642 | 0.01 - 0.02155 | 0.004642 - 0.01 | 0.002155 - 0.004642 | 0.001 - 0.002155 | 0.0004642 - 0.001 | 0.0002155 - 0.0004642 | 0.0001 - 0.0002155 | > 0 - 0.0001 (lowest probability) | 0 (mapped as non-burnable).

Conditional net value change at a point for people, property, infrastructure and historic assets if a fire occurs, from the CONUS QWRA; negative values are losses. Pixel classes: Very high loss (< -31.623) | High loss (-31.623 to -10) | Moderate loss (-10 to -3.1623) | Low loss (-3.1623 to -1) | Very low loss (-1 to 0) | Unquantified impact to people and property in core developed.

Conditional net value change at a point for people, property, infrastructure, historic assets and municipal watersheds, from the CONUS QWRA. Pixel classes: Very high loss (< -31.623) | High loss (-31.623 to -10) | Moderate loss (-10 to -3.1623) | Low loss (-3.1623 to -1) | Very low loss (-1 to 0) | Unquantified impact to people and property in core developed.

Expected annual net value change at a point for people, property, infrastructure and historic assets, from the CONUS QWRA; conditional loss multiplied by burn probability. Pixel classes: Very high loss (< -0.03162) | High loss (-0.03162 to -0.01) | Moderate loss (-0.01 to -0.003162) | Low loss (-0.003162 to -0.001) | Very low loss (-0.001 to 0) | Unquantified impact to people and property in urban core and agriculture.

Expected annual net value change at a point for people, property, infrastructure, historic assets and municipal watersheds, from the CONUS QWRA. Pixel classes: Very high loss (< -0.03162) | High loss (-0.03162 to -0.01) | Moderate loss (-0.01 to -0.003162) | Low loss (-0.003162 to -0.001) | Very low loss (-0.001 to 0) | Unquantified impact to people and property in urban core and agriculture.

Post-fire percent change in tree basal area at a point, in seven mortality classes, from the Rapid Assessment of Vegetation Condition after Wildfire programme. Pixel classes: 0% BA mortality | 0% < BA mortality < 10% | 10% <= BA mortality < 25% | 25% <= BA mortality < 50% | 50% <= BA mortality < 75% | 75% <= BA mortality < 90% | BA mortality >= 90% | Masked.

Post-fire percent change in canopy cover at a point, in five mortality classes, from the RAVG programme. Pixel classes: 0% CC mortality | 0% < CC mortality < 25% | 25% <= CC mortality < 50% | 50% <= CC mortality < 75% | CC mortality >= 75% | Masked.

Four-class standardised Composite Burn Index at a point from the RAVG programme, from unchanged through low and moderate to high severity. Pixel classes: Unchanged (0 <= CBI < 0.1) | Low severity (0.1 <= CBI < 1.25) | Moderate severity (1.25 <= CBI < 2.25) | High severity (2.25 <= CBI < 3.0) | Masked.

Snag hazard class at a point: the risk to ground crews from standing dead trees, from non-forest and uncertain through low, moderate, high and extreme. Pixel classes: Non-forest | Uncertain snag hazard from older disturbances | Low | Moderate | High | Extreme.

Suppression Difficulty Index at a point under 80th-percentile fire weather: how hard a fire there would be to contain, given fuels, terrain and access. Pixel classes: Lowest Difficulty (0-10) | 10-20 | 20-40 | 40-70 | 70-100 | Highest Difficulty (>100).

Suppression Difficulty Index at a point under 90th-percentile fire weather. Pixel classes: Lowest Difficulty (0-10) | 10-20 | 20-40 | 40-70 | 70-100 | Highest Difficulty (>100).

Suppression Difficulty Index at a point under 97th-percentile fire weather, the extreme-conditions case. Pixel classes: Lowest Difficulty (0-10) | 10-20 | 20-40 | 40-70 | 70-100 | Highest Difficulty (>100).

Suppression Difficulty Index at a point in Alaska, the Alaska-specific run of the same index. Pixel classes: Lowest Difficulty (0-10) | 10-20 | 20-40 | 40-70 | 70-100 | Highest Difficulty (>100).

Wildfire Hazard Potential class at a point from the standalone 270 m national WHP product (version 2023, 4th edition): very low to very high, plus non-burnable and water. Pixel classes: Very Low | Low | Moderate | High | Very High | Non-burnable | Water.

Continuous Wildfire Hazard Potential index value at a point from the 270 m national WHP product, before classification into five classes. Pixel classes: High : 144153 | Low : 0.

Number of buildings in the 30 m pixel at a point, from the Wildfire Risk to Communities building footprint layer. Pixel classes: 1 | 2 | 3 | 4 | 5 | 6 | 7 +.

Percentage of the 30 m pixel at a point covered by building footprints. Pixel classes: 1-5% | 5-15% | 15-25% | 25-35% | 35-45% | >45%.

Building density at a point in buildings per square kilometre. Pixel classes: 5 - 50 | 50 - 100 | 100 - 250 | 250 - 500 | 500 - 1000 | 1000 - 10,000.

Graded wildfire exposure of buildings at a point, from very low through indirectly exposed low/moderate/high to directly exposed. Pixel classes: Very Low or No Exposure | Indirectly Exposed: Low | Indirectly Exposed: Moderate | Indirectly Exposed: High | Directly Exposed.

Modelled annual probability that a wildfire burns the 30 m pixel at a point, from Wildfire Risk to Communities 2nd edition (2024). Pixel classes: 0 to 1-in-10,000 | 1-in-10,000 to 1-in-4,643 | 1-in-4,643 to 1-in-2,154 | 1-in-2,154 to 1-in-1,000 | 1-in-1,000 to 1-in-464 | 1-in-464 to 1-in-215 | 1-in-215 to 1-in-100 | 1-in-100 to 1-in-46 | 1-in-46 to 1-in-22 | 1-in-22 to 1-in-10 | 1-in-22 to 1-in-8.

Mean flame length expected at a point if a wildfire does occur there, in feet, from Wildfire Risk to Communities 2nd edition. Pixel classes: NA | 0 to 2 feet | 2 to 4 feet | 4 to 6 feet | 6 to 8 feet | 8 to 12 feet | 12 to 20 feet | > 20 feet.

Conditional Risk to Potential Structures (cRPS) at a point: the consequence to a structure if a fire reaches it, ignoring how likely that is, as a national percentile. Pixel classes: 0 | 0 to 40th | 40th to 70th | 70th to 90th | 90th to 95th | 95th to 100th.

Whether a point is directly exposed to wildfire (wildland fuel on site), indirectly exposed (within ember or structure-to-structure range), or not exposed. Pixel classes: Not Exposed | Indirectly Exposed | Directly Exposed.

Conditional probability that flame length exceeds 4 feet at a point if a wildfire occurs, the usual threshold for direct attack by hand crews. Pixel classes: 0% | 0 to 20% | 20 to 40% | 40 to 60% | 60 to 80% | 80 to 100%.

Conditional probability that flame length exceeds 8 feet at a point if a wildfire occurs, the threshold above which crown fire and spotting become likely. Pixel classes: 0% | 0 to 20% | 20 to 40% | 40 to 60% | 60 to 80% | 80 to 100%.

Number of housing units in the 30 m pixel at a point, dasymetrically allocated from census data. Pixel classes: 0 - 1 | 1 - 3 | 3 - 10 | 10 - 30 | 30 - 100 | 100 - 300 | > 300.

Housing unit density class at a point, from below density rating through very low to very high. Pixel classes: Below Density Rating | Very Low | Low | Medium | Medium - High | High | Very High.

Housing Unit Exposure (HUE) at a point: housing unit density multiplied by wildfire exposure. Pixel classes: Very Low or No Exposure | 0 - 0.00001 | 0.00001 - 0.0001 | 0.0001 - 0.001 | 0.001 - 0.01 | > 0.01.

Housing Unit Impact (HUI) at a point: the consequence to housing if a fire occurs, independent of how likely a fire is. Pixel classes: 1 - 100,000 | 100,001 - 316,228 | 316,229 - 1,000,000 | 1,000,001 - 3,162,278 | 3,162,279 - 10,000,000 | > 10,000,000.

Housing Unit Risk (HUR) at a point: housing unit impact multiplied by annual burn probability, the headline WRC risk-to-homes measure. Pixel classes: 0 | 1 | 2 - 10 | 11 - 100 | 101 - 1,000 | 1,001 - 10,000 | 10,001 - 100,000 | > 100,000.

Number of residents in the 30 m pixel at a point, dasymetrically allocated from census data. Pixel classes: 0 - 1 | 1 - 3 | 3 - 10 | 10 - 30 | 30 - 100 | 100 - 300 | > 300.

Resident population density at a point, in people per square kilometre. Pixel classes: 0 - 30 | 30 - 100 | 100 - 300 | 300 - 1000 | 1,000 - 3,000 | 3,000 - 10,000 | > 10,000.

Ten-class Community Wildfire Risk Reduction Zone at a point, splitting the wildfire transmission zone by fuel type (tree, shrub, grass, agriculture, non-vegetated). Pixel classes: Minimal Exposure | Indirect Exposure | Direct Exposure | Wildfire Transmission Zone: Tree | Wildfire Transmission Zone: Shrub | Wildfire Transmission Zone: Grass | Wildfire Transmission Zone: Agriculture | Wildfire Transmission Zone: Non-Vegetated | Outlying Wildlands | Water.

Four-class Community Wildfire Risk Reduction Zone at a point: minimal exposure, indirect exposure, direct exposure or wildfire transmission zone. Pixel classes: Minimal Exposure | Indirect Exposure | Direct Exposure | Wildfire Transmission Zone | NA.

Risk to Potential Structures (RPS) at a point: conditional fire consequence multiplied by burn probability, expressed as a national percentile. Pixel classes: 0 | 0 to 40th | 40th to 70th | 70th to 90th | 90th to 95th | 95th to 100th.

Wildfire Hazard Potential class at a point as republished inside Wildfire Risk to Communities, from very low to very high. Pixel classes: Very Low | Low | Moderate | High | Very High.