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Wildfire Transmission (Risk-Source) is the potential for wildfires to transmit risk is a function of the spatial variation in fire occurrence and fire growth potential, in conjunction with spatial variation in HVRA location. To evaluate this potential, we summed cNVC values within each simulated FSim fire perimeter, then attributed the start location of each fire with that value. We summarized each individual HVRA (People and Property, Infrastructure, and Watersheds) and calculated the total as the sum of all HVRA. Additionally, we evaluated wildfire transmission risk to MT structures only, independent of the weighting applied to HVRA in the full wildfire risk assessment. The mean consequence of an ignition, given a fire starts, is called Conditional Risk-Source. The Conditional Risk-Source raster is calculated by dividing the sum of cNVC per iteration by the sum of “1/iterations” to account for differences across FOA boundaries and remove the annual estimate of 9 Ignitable fuel includes burnable fuel and custom burnable-agriculture fuel models. 30 number of fire-starts from the calculation. This process was repeated for each individual HVRA and totaled for all HVRA. A total of 10 risk-source rasters were generated for this analysis. Both conditional and expected risksource raster sets were generated for each HVRA, for the total of all HVRA, and for MT structures separate from the other HVRA. Expected Risk-Source rasters consider both the consequence of transmitted wildfire risk to HVRA and the relative likelihood of ignitions occurring. Conditional RiskSource rasters compare consequence across the landscape without consideration of ignition likelihood and are useful in active incident decision making when the likelihood of ignition is already known. |
| summary:
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Wildfire Transmission (Risk-Source) is the potential for wildfires to transmit risk is a function of the spatial variation in fire occurrence and fire growth potential, in conjunction with spatial variation in HVRA location. To evaluate this potential, we summed cNVC values within each simulated FSim fire perimeter, then attributed the start location of each fire with that value. We summarized each individual HVRA (People and Property, Infrastructure, and Watersheds) and calculated the total as the sum of all HVRA. Additionally, we evaluated wildfire transmission risk to MT structures only, independent of the weighting applied to HVRA in the full wildfire risk assessment. The mean consequence of an ignition, given a fire starts, is called Conditional Risk-Source. The Conditional Risk-Source raster is calculated by dividing the sum of cNVC per iteration by the sum of “1/iterations” to account for differences across FOA boundaries and remove the annual estimate of 9 Ignitable fuel includes burnable fuel and custom burnable-agriculture fuel models. 30 number of fire-starts from the calculation. This process was repeated for each individual HVRA and totaled for all HVRA. A total of 10 risk-source rasters were generated for this analysis. Both conditional and expected risksource raster sets were generated for each HVRA, for the total of all HVRA, and for MT structures separate from the other HVRA. Expected Risk-Source rasters consider both the consequence of transmitted wildfire risk to HVRA and the relative likelihood of ignitions occurring. Conditional RiskSource rasters compare consequence across the landscape without consideration of ignition likelihood and are useful in active incident decision making when the likelihood of ignition is already known. |
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130718.063791645 |
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["ArcGIS Server","Data","Image Service","Service"] |
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| title:
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TOTAL_conRiskSource |
| type:
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Image Service |
| url:
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https://testgis.dnrc.mt.gov/arcgis |
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[] |
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en-US |
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TOTAL_conRiskSource |
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8365956.08266527 |
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NAD_1983_StatePlane_Montana_FIPS_2500 |