Near Real-Time Auroral Activity Mosaic

The first pair of mosaics below shows a near real-time snapshot of current auroral activity. The second pair shows the strongest auroral activity observed over the last 24 hours. Only night-time data is used to create these mosaics. Because of this, during the polar summer you will see black areas over the poles, where the sun does not set and no night-time data is available.

Click Here for a quick visual tutorial. Aurora mosaics are created from all three polar passes of the NOAA-21/20/Suomi spacecraft. Data comes in strips. The red line marks where the sun is rising or setting at the time stamp of the latest data (marked after ->). The area inside the blue line marks darkness and no lunar interference (the moon has not risen). The dotted yellow line shows the center of the latest satellite pass so it is easy to tell which swath is the current one. City lights are visible. Click here for Southern hemisphere polar images.

Solar Wind Velocity	Solar Wind Magnetic Field
V=545 km/sec, Density= +1.5	Bz= -2.7nT, Bt= +6.0nT

Electrical Power Grid Supply vs Demand	Change in Power Grid Demand
Negative values: demand exceeds generation, requiring use of spare capacity or imports. This is provisional data and is often revised as more utilities report during the day.	Note: all power grid data is provisional and subject to change.

Northern Lights Map	Geomagnetic Activity Predictions
Software	(green/red = predicted, blue = observed Kp, time is EST/EDT) Power Grids Reporting No Anomalies