Aurora Alerts: Kp & Forecast

The aurora only shows up when everything lines up: enough magnetic activity, a sky that is dark enough, and no clouds in the way. This app tells you plainly how things look where you actually are – not as a global number, but as a judgement for the spot you are standing on. NOW • A clear answer: very low, low, moderate or high chance • Probability from NOAA's OVATION model for your own coordinates • Kp index, solar wind speed and Bz • A short reason for why the answer came out the way it did TONIGHT AND THREE DAYS AHEAD • The Kp forecast as bars, with the hours of darkness drawn into the same picture • The best three-hour slots: when it is dark and Kp is at its highest • One line per night: when darkness starts and ends, and the night's peak Kp MAP • The auroral oval around the pole, with your own position marked • The daylight side is dimmed – you will not see aurora there even when it…