Solar Activity Report for 12/12/04
- G-1 geomagnetic storm conditions have been observed over the last
couple of days, although no aurora to speak of have been seen. The
cause of the activity has been some minor solar wind gusts that
carried a south-pointing interplanetary magnetic field. A
south-pointing IMF weakens Earth's magnetic field, which allows solar
wind paarticles to penetrate deeper into Earth's magnetosphere. The
result can be geomagnetic storm conditions and aurora. The is only
one sunspot region visible at the present time, and it doesn't appear
to have the potential for generating any significant flares. A
coronal hole is rotating towards an Earth-pointing position, and we
could see some solar wind gusts from it on or about the 16th.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 26
SFI : 91
A index : 27
K index : 4
Solar wind speed : 397.1 km/sec
Solar wind density : 1.1 protons/cc
Solare wind pressure : 0.2 nPa
IMF : 14.3 nT
IMF Orientation : 6.8 nT North
GOES-12 Background X-ray Flux level : A8
Conditions for the last 24 hours :
Space weather for the past 24 hours has been minor. Geomagnetic storms
reaching the G1 level occurred.
Forecast for the next 24 hours :
No space weather storms are expected for the next 24 hours.
Solar activity forecast :
Solar activity is expected to be at very low levels.
Geomagnetic activity forecast :
The geomagnetic field is expected to be at predominantly quiet to
unsettled levels. Isolated active conditions may be possible on 13
December in response to the potential for southward Bz oscillations
and a slightly elevated solar wind.
Recent significant solar flare activity :