To access the WeatherShare system, navigate to http://www.weathershare.org/ in your web browser. The WeatherShare main page will be presented showing a map of California with an initial display of “Recent Conditions”, “Air Temperature”. At the initial, full state, display a sampling of stations are shown as icons on the map with indications of the data value for that station. More stations can be seen by zooming into specific areas on the map.
This control is the starting point for changing how information is displayed on the screen. Clicking one of the three items: Recent Conditions, Forecast, Stations,or Alerts will cause a menu to appear giving options for displaying different data sets and zooming into different parts of the map. With the menu showing you can click between the Recent Conditions, Forecast, and Stations menus to see different data. Shown below are the different data options for the Recent Conditions, Forecast and Stations menus.
The Forecast menu also includes a list of future times. You can select a specific time from the Time: dropdown box or scroll through the list using the forward/backward arrows next to the Time: dropdown box.
Hiding the Menu
Notice for each of the data options above, the option that is selected will show in bold text in the menu bar. Clicking the option that is shown in bold while the menu is shown will hide the menu. You can then show the menu again by clicking any of the data options.
As shown below, clicking on a station icon will bring up a detail bubble with all the data from that station (shown is Recent Conditions). Forecast data is mapped to postmiles not to stations. Clicking an icon on the Forecast display will show the Highway, County, Milepost that the data was mapped to as shown below right. From a station information bubble (from Recent Conditions or Stations display) you can click the Historical Data link to display or download historical data.
Note: for the Stations display that you must zoom in at least two levels before the icons become “clickable”.
You can use this control to zoom in or out and move to specific areas of the map. Click the up, down, right or left arrows at the top of the control to pan the display in the given direction. Click the icon to return the map to the default, full state view.
Click the or icons to zoom out or zoom in. You can also drag the zoom slider icon up or down by clicking the icon and holding the mouse button down while you move the slider up or down. You can highlight and zoom to a specific area of the map by using the Drag zoom control. Click the Drag zoom icon, the screen will darken. Move the mouse pointer to the top left corner of the area you want to zoom to, click and hold down the left mouse button while you “drag” the pointer to the bottom right corner of the area you wish to zoom to. When you release the mouse button the screen will zoom to the area you selected. See below.
The Zoom To: drop down boxes gives you different options to zoom the map to specific areas. As you zoom in, you will get a more complete display of available stations.
Use this control to change the underlying view of the map. Click the Map, Satellite, Hybrid or Terrain buttons to select the type of map to display the data on. Map view shows a street map. Satellite view shows a satellite view of the map. Hybrid view shows a satellite view with streets labels shown. Terrain view shows a representation of the topography.
Red Flag Potential Index
Negligible Risk: Neither prevailing wind nor minimum Relative Humidity are forecast to approach threshold criteria for Red Flag conditions.
Low Risk: Low Relative Humidity, below 15%, with winds less than 20 knots or Relative Humidity greater than 15% with winds up to 30 knots.
Moderate Risk: Low Relative Humidity, below 15%, and/or a mean prevailing wind of at least 20 knots or gusts greater than 25 knots.
High Risk: Relative Humidity ranging from 7% - 15% accompanied by a mean prevailing wind of at least 20 knots or gusts greater than 25 knots.
Extremely High Risk: Relative Humidity lower than 7% accompanied by a mean prevailing wind greater than 30 knots or gusts greater than 35 knots.
© Copyright 2008 Western Transportation Institute, Montana State University - Bozeman