Clear North: Aurora Alerts

Most aurora alerts tell you the sun is busy. Clear North tells you whether you can actually see the lights tonight. An alert only fires when all three are true at your location: • Activity is high enough for your latitude • It is dark (the sun is well below the horizon) • The sky is clear enough (low cloud cover) If one fails, Clear North says which one: "Not enough activity: Kp 5, you need 6", or "Too cloudy: 94% cover". TONIGHT (free) A clear verdict (Likely, Possible or Unlikely), the best window to look, how high above the horizon to look, and an hour-by-hour table of activity, cloud and darkness. ALERTS (Clear North Pro) A push notification only when tonight is Likely. You choose a nightly limit, quiet hours, an optional heads-up before dusk, and whether to break through for major storms. Time Sensitive delivery so a real show is not buried. OUTLOOK (Clear North Pro) The next three…