Solar Activity Report for 5/20/03
- The calm before the storm would probably best describe the status of
things right now. The solar wind speed has dropped down to a fairly
normal level, and there isn't much to report. The solar wind speed is
expected to pick up in around 48 hours due coronal hole effects, so
stay tuned for that. Just how much activity there will be remains to
be seen. As coronal holes go, I'd say the this one is medium-sized,
and it is in a good Earth-pointing position. There was an impressive
looking prominence photographed on the 18th jutting out from the sun's
eastern limb. It stretches about 10 Earth diameters from base to tip.
None of the few small sunspot regions visible look to have any
significant flare-generating potential for the time being, and the
background X-ray flux remains relatively low.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 77
SFI : 117
A index : 13
K index : 3
Solar wind speed : 389.8 km/sec
Solar wind density : 3.4 protons/cc
Solar wind pressure : 0.9 nPa
IMF : 10.1 nT
IMF Orientation : 3.1 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 be at low levels. C-class activity is
expected from Regions 362 and 364.
Geomagnetic Activity Forecast :
The geomagnetic field is expected to be at quiet to unsettled levels.
Recent significant solar flare activity :