UDV Weather & Dynamic Overlays - Product Properties

Select the minimum level of NEXRAD data to display. There are 15 levels from which to choose (from 5 to 75 dBZ). This can reduce screen clutter by eliminating low level precipitation, showing only areas of severe weather.

The NEXRAD 2km composite (WxType) product contains information that distinguishes areas of rain, mixed precipitation, and snow. When selected, mixed precipitation and snow areas are shown with 16 colors unique from that of the 16 colors indicating rain. The colors and corresponding reflectivity can be viewed in the Map Legend. When not selected, all NEXRAD (mixed precipitation and snow areas) are shown in the standard 16 rain colors.

Select the minimum level (between < .10 to > 15 inches) of rainfall data to display. See only areas where high amounts of rain have fallen by eliminating all lower level precipitation.

Select the minimum level (ranging from < 5,000 feet to >= 70,000 feet) of the altitude of rainfall within clouds that should be displayed.

Different wind condition symbols are associated with each category. Select the category of viewable symbols and press Apply to see each type. Color is consistent with NOAA (National Oceanographic Atmospheric Association) and ADDS (Aviation Digital Data Service) color coding conventions. See the Winds Color/Symbol Sample.

Select one of these combinations to show how winds should be depicted on-screen.

Color Appearance

• Fixed - Uses the color selected in the Color Selection Box.
• Based on Intensity - Uses a defined color code.

Color Selection Box

1. Click the color box to open the color palette.
2. Select the desired color. The palette closes when a color is selected.
3. Click Apply.

The wind barb symbol (measured/forecast wind speed in knots and direction in degrees) can be displayed as Small, Medium, or Large.

Select the type of symbol to represent lightning strikes.

• Dot - Default, select to display lightning strike as a dot
• Plus - Select to display lightning strike as plus (+) symbol.
• +/- - Select to display lightning strike as a plus (+) or minus (-) symbol depending on polarity

Select one of these options as the color scheme to represent age of lightning strikes.

• Faded - Default, displays lightning strikes in a gradient with older strikes appearing faded.
• Discrete - Select to display lightning strikes in discrete colors representing age (new->old)
  • white
  • red
  • orange
  • yellow
  • blue
  • gray
  • dark gray

Select how the Jet Stream lines should appear: Extra Thin, Thin, Medium, or Wide.

Select the minimum level (between 0 and 59,000 feet) of satellite data to display. This can reduce screen clutter by eliminating low level cloud data, showing only areas of high, cold clouds.

Color can be added to the highest clouds to distinguish areas of severe weather more easily. Colors can be viewed in the Map Legend. Select blue/red or orange/magenta. The colorize check box must be selected to activate the color combinations.

• Blue/red - are used as the main color scheme
• Orange/magenta - are used as the main color scheme

Choose how ATSAS airport lightning should appear: True Shape, True Distance, or Pixel Accurate.

Use the slider to choose the level that labels are visible on-screen. Click the @ button to select the current zoom level. The corresponding item will be visible from the selected zoom level to the lowest zoom level (city).

These color settings are used for Volcanic Ash products only and not the Volcanoes product. Volcanoes that are classified by the WAFC (World Area Forecast Center, London) use aviation color coding and are not affected by the Default color selection. Aviation Color Codes (below) are: Red, Orange, Yellow, Green, Nil, Unknown, and Not Given. The default color, white, is used for Volcanoes that are not classified by the WAFC and use the Aviation Codes as Nil, Unknown, and Not Given.

Use the Default color "white" or select a different color for volcanoes that do not have a classification from the WAFC.

When this option is selected, the ash outline is the same color as the icon whether it is a WAFC color or a default color.

When this option is selected, the ash outline is the same color as selected regardless of the WAFC color.

When this is checked, the icons are filled with the selected Default color if not classified or with the WAFC classified color. The ash is filled with the Default or WAFC classified color when the Use Icon Color above is selected or with the chosen color in the Use this Color.

In order to see underlying data for frame of reference, a transparency level can be defined and applied to raster weather products including radar, satellite and other pixel based products such as graphical echo tops. This feature can be enabled by checking the "Enable raster/sat transparency" option and selecting an appropriate value on the associated slider which ranges from Transparent to Opaque. This setting will work with all weather vendors and will also be applied to the Schneider Electric contoured (vector) NEXRAD product.