Quick Start : WMTweb
- Quick Start : WMTweb
- 1. Overview
- 2. Fire Lookouts
- 3. Weather Scouts
- 4. ICS Markers
- 5. Pushpins
- 6. Globe Navigation
- 7. Setting and Resetting the Date/Time
- Resetting the View
- Figure 1. WMTweb shows fire behavior, weather, terrain and solar data over time.
This page contains instructions for using the Wildfire Management Tool - Web Edition (WMTweb). WMTweb is a browser based web application that displays weather forecasts and potential wildland fire behavior on a 3D globe.
a. Potential Fire Behavior
- Figure 2. Wildfire Diamond symbology provided by Fire Lookouts show potential fire behavior
Potential fire behavior is displayed in Wildfire Diamond symbols provided by Fire Lookouts. Fire Lookouts are markers that you can drop onto the globe where you want to know the potential fire behavior. As seen in Fig. 1, you can array multiple Fire Lookouts across the terrain to show the variability of the fire behavior in different fuels and topographical features. Fire Lookouts compute the fire behavior for the selected time using the weather forecast and the solar radiation at their locations. As you change the time in WMTweb, you can see the changes in fire behavior manifest in the Wildfire Diamond symbols.
Wildland fire behavior is displayed using a Wildfire Diamond symbol with a direction of maximum spread arrow, plus some text indicating the fuel model and flame length. The Wildfire Diamond depicts fire behavior using four color-coded quadrants in a diamond shaped symbol. The upper quadrant shows the head fire behavior; the left and right quadrants show the flanking fire behavior on either side of the directional arrow; and the lower quadrant shows the backing fire behavior. The fuel model is displayed in the center of the symbol, and the flame lengths may be displayed in the respective quadrants.
b. Weather Forecasts
- Figure 3. Weather Scouts in proximity to Fire Lookouts show the weather forecast
Weather forecasts are displayed using weather symbols provided by Weather Scouts. Weather Scouts are markers that you drop onto the globe where you'd like to know the weather forecast. As seen in Fig. 2, you can place Weather Scouts near Fire Lookouts to see the weather that's influencing the fire behavior. Weather Scouts download the forecast for their location and display the weather for the selected time.
The weather is displayed using wind barb and sky cover symbols, and text that indicates the air temperature and relative humidity.
e. Map Layers
2. Fire Lookouts
Fire Lookouts are spatiotemporal markers you drop on to the globe. A Fire Lookout downloads a point weather forecast for its location and computes the fire behavior from the weather, terrain, solar radiation and a fuel model.
Fire Lookouts are dynamic. Advancing the application time with the time slider allows you to view the expected fire behavior in the future. When you move a Fire Lookout it triggers a new computation the fire behavior and it updates the symbology accordingly. Fire Lookouts are designed to alert the user when a significant change is detected in the future fire behavior. This lookout mechanism takes place behind the scenes alerts the user via visual cues.
a. Adding a Fire Lookout to the Globe
b. Editing a Fire Lookout
c. Removing a Fire Lookout
3. Weather Scouts
Weather Scouts are similar to Fire Lookouts in that they download the weather forecast for their locations. The Weather Scouts display the weather forecasts using standard weather station symbology. They react to changes in location and time and update their symbology accordingly. The scouts are designed to alert the user when a significant change is detected in the forecast.
a. Adding a Weather Scout to the Globe
b. Editing a Weather Scout
c. Removing a Weather Scout
c. Refresh Weather Forecasts
4. ICS Markers
- Markers, Scouts and Lookouts are added to the globe by selecting the desired item and then clicking the globe where you want it placed.
- Opening up the corresponding list for Markers, Scouts, or Lookouts provides you with the ability to "go to", edit or remove the selected item.
6. Globe Navigation
|Pan||Left click-drag||Touch-drag||Arrow Keys|
|Rotate||Right click-drag left/right||Tap Rotate Button||R resets to nadir|
|Tilt||Right click-drag up/down||Tap Tilt Button||N sets to north up|
|Zoom||Mouse wheel or two-finger drag||Pinch gesture||+ / - (plus/minus) keys|
7. Setting and Resetting the Date/Time
- The time slider is used to change the date and time. Its a very powerful control. The scale is logrithmic so large movements will advance or retard the time very quickly
- A reset button resides above the Time Widget which resets the time to "now".
Resetting the View
- A reset button resides above the Location Widget which resets the view tilt to look down and view rotation to north up.
Copyright © 2015, Bruce Schubert