Solar Ac tivity Report for 5/30/02
- View SourceThe Earth has finally exited the high speed solar wind stream that we
have been inside for the past several days, and solar wind speeds are
falling back to normal. All aurora watches have expired. As if to make
up for the loss, flare activity has been increasing of late. There
have been 3 M-class flares in the last 24 hours, two of which have
come from a new sunspot region, 9973. Sunspot region 9973 rotated into
view a couple of days ago, and is quite impressive in size. It covers
an area 5 times that of Earth's surface, and has been the source of
two of the three aforementioned flares. This active sunspot region
will bare watching in the days ahead.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 190
SFI : 180
A index : 8
K index : 2
Solar wind speed : 358.4 km/sec
Solar wind density : 5.7 protons/cc
Solar wind pressure : 1.2 nPa
IMF : 4.7 nT
IMF Orientation : 1.9 nT South
Conditions for the last 24 hours :
Space weather for the past 24 hours has been minor. Radio blackouts
reaching the R1 level occurred.
Forecast for the next 24 hours :
Space weather for the next 24 hours is expected to be minor. Radio
blackouts reaching the R1 level are expected.
Solar activity forecast :
Solar activity is expected to be at moderate levels. Region 9973 has a
slight chance of producing a major event.
Geomagnetic activity forecast :
The geomagnetic field is expected to be at quiet to unsettled levels.
Isolated active conditions may be possible through day one of the
Recent significant solar flare activity :
31-May-2002 0015Z M2.1
30-May-2002 1724Z M1.6
30-May-2002 0532Z M1.3