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.
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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 |
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| Southern
Auroral Oval |
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