Simulate > Modify Map > Weather Monitoring and Grid

This command is optional when running FARSITE. The command has two functions:

to allow you to set the location for weather monitoring stations that monitor weather at a particular location on the simulated landscape, and
to enable you to make use of multiple weather/wind streams (.WTR and .WND files) by customizing the resolution and spatial location of those streams on the landscape.

When this command is selected a second window appears with the landscape image; this window has the caption "Weather/Wind Stream Grid". This second window is used to define a weather/wind grid when utilizating multiple weather/wind streams.

Caution: Do not confuse this grid with Gridded Weather and Wind (.ATM) Files.

The original "LANDSCAPE" window is used to locate the weather monitoring stations. The cursor will acquire the shape of a weather station when placed over the landscape window, but not the Weather/Wind Stream Window.

Locating a Weather Station

A weather monitoring station is a location you specify from which weather and fuel moisture information is to be collected and displayed graphically (these are NOT the locations of weather stream inputs!). These graphs display cumulative strip-charts of temperatures and humidities on one graph, and fuel moistures on another graph.

Up to five weather monitoring stations can be located on the landscape. A weather station is located by positioning the mouse cursor over the desired spot on the landscape and clicking the left mouse button. This will result in a numbered marker being placed at that location in the landscape window. You can display the weather and fuel moisture information from each weather station with the toolbar button or the Output > Graphs > Weather command.

Customizing a Weather/Wind Grid

Customizing a weather/wind grid for multiple weather/wind streams only works in the "Weather/Wind Stream Grid" window.

Before You Begin

You must have already loaded more than one weather and wind stream. You also must have the same number of weather and wind streams to use multiple weather/wind stream indexes.

Right Mouse Button Controls the Grid Resolution

Use the right mouse-button to change the resolution of the grid, depending on where the mouse cursor is located in the window. To adjust the resolution of the grid in the North-South direction, i.e. to make it finer, move the cursor to the top of the window and click the right mouse button until the grid is of the desired dimension. Move the cursor to the far right of the window and click the right mouse button to make it finer in the East-West direction. Placing the mouse at the bottom or left of the window when you make a right-click will have the opposite effect on resolution in the respective directions.

NOTE: You can only change the Grid Resolution when the viewport is set at maximum (e.g. the full extent of the Landscape (.LCP) File). You can however, change the Weather/Wind stream index for any cell at any viewport extent.

Left Mouse Button Controls the Weather/Wind Stream Index

To change the weather/wind stream index of a given grid cell, position the cursor in that cell and press the left mouse button. This will increment the index number of the weather/wind stream corresponding to that grid-cell. Incrementing beyond the number of available weather/wind stations will reset the index to 1.

NOTE: all cells will reset to weather/wind stream 1 when the resolution is adjusted with the right mouse button.

Toggle the Weather Station Button or menu selection to erase the "Weather/Wind Stream Grid" window

Once you are satisfied with the way a grid is customized, you should make or save the project file so that these settings will be retained in that project for future uses.