This utility uses the weather and wind type definitions to automatically generate the required Weather (.WTR) and Wind (.WND) Files for a FARSITE simulation. After setting up a range of dates, you will designate what "type" of fire weather occurred on each date (Low, Mod, High etc.). Once generated, you can edit the Weather (.WTR) and Wind (.WND) Files in any ASCII editor.
Press the Use WWDefs button to load the Weather and Wind Definition (.WWD) File produced with the Input > Define Wind & Weather Types command. You cannot generate Weather (.WTR) and Wind (.WND) Files without having defined weather/wind types.
Next, select the starting and ending dates for your weather and wind streams. Remember, a FARSITE simulation requires weather and wind streams to contain 1 Full Day before and 1 Full Day After the dates you want to simulate. For example, if you want to start your simulation on August 10th and end on September 15th, the minimum range of dates would include August 9th and September 16th.
Then, select the Edit Table button. This will fill out the range of dates to be filled below.
You can now use the keyboard to put in the first letters of the weather types or use the W-Types buttons (N, L, M, H, E, O) to fill in the types for each day. These correspond to the weather/wind types you have defined. You can only use weather/wind types that you have defined. For example, if you have not defined the "None" type, you cannot use it in this dialog box.
The Next button enters your change and advances the rows of dates either up or down depending on which end of the date range you are situated. You can also use the vertical slider bar on the left side of the date table to edit the weather/wind type for any of the dates.
Once you have filled in all weather/wind types for the range of dates, you can select the GENERATE WTR & WND FILES button. This will prompt you for a filename. The .WTR and .WND extensions will be appended to this file name for the weather and wind files that will be generated.
You should save this Generated wind/weather Type (.WGN) File by pressing the Save WGN File button if you think you might want to make changes to this calendar template.