Public safety personnel and first responders are tasked with identifying safe distances and zones when planning events. For example, should an explosion occur at a location susceptible to attack, personnel want to be prepared with an understanding of what perimeters to set up, and what areas to evacuate.
Configure the Threat Analysis widget
This widget can be set to open automatically when
an app starts. Click the Do not open this widget when
the app starts button 
on the widget to turn on the option to open the widget automatically. (For widgets you need to add to the app first, you can make this setting after configuring the widget.)
- Hover over the widget and click the Configure this widget button
to open the configuration window.Note:
If you need to add the widget to the app first, click a widget placeholder on the Widget tab. In the Choose Widget window that opens, select the widget and click OK.
- Optionally click the Change widget icon button to replace the widget icon with your own image.
A file explorer window appears, allowing you to select a local image file to use as the widget icon.
- On the Threat Type tab, which displays a table of threat types, edit threat types or add custom types.
- Point to the Actions column for a threat type in the table for buttons to edit, delete, or re-arrange the display sequence.
- Click Add Threat Type and choose from a default threat type or create a custom threat type.
- If applicable, click Add threat zones to create one or many zones for the custom threat type. Provide a description, distance, and symbology for a new threat zone.
- On the General tab, configure the following settings:
- Select an operational layer for results—Choose from a list of editable polygon feature layers in the current web map to which users can save results.
Note:
The list only includes layers from your organization and only if the layer can be edited. If the map uses polygon feature layers from another organization or that aren't editable, they do not appear in the list.
- Select a default unit of measure—Specify Feet or Meters as the default units for the distance values that appear in Mandatory Evacuation Distance and Safe Evacuation Distance user settings.
- Default input location—Choose Interactive, Fixed Coordinate, or From Existing Features to allow users to create threat zones.
- Default input layer—Choose from a list of editable feature layers to select features from in order to create threat zones. (This parameter is tied to the From Existing Features option in Default input location.)
- Default threat type—Choose from a list of threat types to set as a default threat type when the widget is opened.
- Select an operational layer for results—Choose from a list of editable polygon feature layers in the current web map to which users can save results.
- Click OK to save your settings and close the Configure Threat Analysis window.
Use the Threat Analysis widget
You can create and change the appearance of evacuation zones in multiple ways.
Change the settings
- Open the settings window to change the appearance.
- Select a threat type.
- In the table, point to the Actions column for a zone type to edit, and configure the following options:
- Outline—Choose the color, transparency, and style.
- Fill—Choose the color, transparency, and style.
Create evacuation zones
Learn how to create evacuation zones from the map using fixed locations or existing features, or by interactively selecting locations.
Create zones interactively
You can create evacuation zones interactively by drawing locations on the map.
- From the Input Location list, choose Interactive.
- Select either the Point, Polyline, or Polygon drawing tool and draw a feature on the map.
- From the Threat Type Category list, choose a category.
- From the Threat Type list, choose a threat type.
- From the Units list, choose Feet or Meters.
- Click Create Zones.
- Optionally click Publish after the zones have been created to save them as a hosted feature layer.
Create zones from fixed coordinates
You can create evacuation zones from fixed coordinates.
- From the Input Location list, choose Fixed Coordinate.
- Enter a coordinate in the Threat Location text box and press Enter, or use the Add Threat Location tool to select a location on the map.
- From the Threat Type Category list, choose a category.
- From the Threat Type list, choose a threat type.
- From the Units list, choose Feet or Meters.
- Click Create Zones.
- Optionally click Publish after the zones have been created to save them as a hosted feature layer.
Create zones from existing features
You can create evacuation zones by selecting existing features from the map.
- From the Input Location list, choose From Existing Features.
- From the Select Feature From This Layer list, choose the layer that contains the features you want to select.
Note:
Currently, layers based on feature collections will display in the Select Feature From This Layer list, but the features contained within are not supported as selectable inputs.
- Click the Extent tool and select features from the map.
- From the Threat Type Category list, choose a category.
- From the Threat Type list, choose a threat type.
- From the Units list, choose Feet or Meters.
- Click Create Zones.
- Optionally click Publish after the zones have been created to save them as a hosted feature layer.
Publish evacuation zones
Publish evacuation zones as a hosted feature layer to a portal or organizational account.
- Type a name for the hosted feature layer in the Published Layer Name text box.
- Click Publish.
- In the Sign In window, enter a user name and password.
- Click OK.