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Thursday, 25 September 2008 21:41 |
Geophysical Activity Summary 14/2100Z to 15/2100Z:
The geomagnetic field was predominately unsettled to active. An
isolated quiet period was observed at 15/0000Z. The increase in
activity is in response to a favorably positioned coronal hole high
speed stream. Solar wind speed measured at the ACE spacecraft
indicated an increase from approximately 390 km/s to 610 km/s during
the forecast period. The greater than 2 MeV electron flux at
geosynchronous orbit was at high levels today. - courtesy of USAF/NOAA; image credit: NOAA    View Full Story
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