2103Solar Activity Report for 2/7/04
- Feb 7, 2004Exit one coronal hole, enter another. The solar wind speed is slowing
down from the latest coronal hole passage. There were some G-1
geomagnetic storm conditions associated with it, and although aurora
weren't widespread, there were some sightings in Canada and Alaska.
Now that that coronal hole has gone, there's another one that has
appeared over the eastern limb of the solar disk. We should begin to
see some of the solar wind gusts from it on or about the 12th. On the
sunspot scene, region 51 has grown rather rapidly from being nearly
invisible a few days ago to now spanning over 4 Earth diameters
end-to-end. It has the potential for generating M-class flares.
The solar and geomagnetic conditions are :
NOAA sunspot number : 92
SFI : 111
A index : 8
K index : 1
Solar wind speed : 408.2 km/sec
Solar wind density : 0.9 protons/cc
Solar wind pressure : 0.4 nPa
IMF : 5.6 nT
IMF Orientation : 1.6 nT North
Conditions for the last 24 hours :
No space weather storms were observed for the past 24 hours.
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 remain at low levels. Region 551 has the
potential to produce an isolated minor M-class flare.
Geomagnetic activity forecast :
The geomagnetic field is expected to range from quiet to active levels
throughout the period. 9 February may experience isolated minor storm
conditions, at predominantly higher latitudes, due to a recurrent
coronal hole high speed stream.
Recent significant solar flare activity :