The center of the dial in the top portion of the app shows the total accumulation that may occur over the next few hours (The amount of hours shown depends on which bar graph is selected).

The 4 quadrants around the dial are the most commonly issued winter weather alerts:
  • Winter Weather Advisory
  • Winter Storm Watch
  • Winter Storm Warning
  • Blizzard Warning

When any weather alerts are active for the location you've specified in SnowCast, that quadrant will light up, and you'll see the alert below the dial. Tap on the alert to read more details for that alert.  SnowCast will also let you know in the app when other less common winter weather alerts are active for your location.