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Northern Lights and Space Weather

Geomagnetic Field Status The graphic below, updated every three hours, is supplied by NOAA. It's based on a measure of the Earth's magnetic field called the planetary K, or Kp, index over the previous day as indicated by the legend. During geomagnetic storms, auroral ovals intensify and expand toward middle latitudes, increasing the opportunity for auroral displays visible from the U.S., central Europe, Australia, South Africa and South America.

Status
QUIET
    Inactive, Kp < 4
UNSETTLED
    Active, Kp = 4
STORM!
    Storm, Kp > 4

More Space Weather Links

NOAA's Extrapolated Auroral Activity. These maps show the current extent and position of the auroral oval at the north (top) and south (bottom) poles. The colors represent measurements from the most recent pass of NOAA's Polar-orbiting Operational Environmental Satellite (POES). Yellow and orange mark the auroral oval the red arrow indicates the sun's position. The link below each map takes you to a Java animation of recent images.

Northern Auroral Oval
Southern Auroral Oval

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