Fire Behavior Specialists or Super Analysts can add or delete one or more rows of daily weather forecast data when working from the ERC Stream Menu Option in FSPro. The fields in each row can be populated manually or data can be pulled from the National Weather Service (NWS) Point Forecast Data. The more rows you add (i.e. the longer the forecast period), the fewer days of time-series generated climatological information of ERCs and subsequent fuel moistures are used and vice versa. Typically, more rows are used when there is greater confidence in the weather forecast and fewer rows are used when there is less confidence in the forecast.
One caveat to using the forecasted weather is that the ERC (and subsequent fuel moisture, burn period and spotting probability) are held constant for those days in the simulation cycle. For example, if 1000 fires are modeled for 7 days with 3 days of forecast, the first 3 days of every 7 day simulation (for 1000 simulations) will show little FSPro output variability for fires that do not exhibit crown fire and spotting. It is recommended to allow FSPro to use time-series generated ERCs for a majority of the simulation period to create a probability map with variability. As a general rule, don't add more than 3 lines of forecast weather to a 7 day simulation; or don't add more than 5-6 days of forecasted weather for a 14 day simulation.
Select additional days from the Days drop-down list.
Click Get NWS Forecasts.
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Last updated on 4/27/2012 1:58:10 PM.
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Last updated on 4/27/2012 1:58:10 PM.
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