Solar Activity Report for 4/9/02
- There are several sunspot groups visible this evening, and the sunspot
number remains above the 200 mark. Sunspot region 9893 is the best
developed of the bunch, and looks to have the potential of producing
an X-class flare. There were a pair of M-class flares today, one of
them coming from sunspot region 9899. The origin of the other M-class
flare is uncertain.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 212
SFI : 205
A index : 2
K index : 1
Solar wind speed : 295.9 km/sec
Solar wind density : 4.6 protons/cc
Solar wind pressure : 0.6 nPa
IMF : 5.2 nT
IMF Orientation : 4.9 nT North
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 predominantly low to moderate,
although Region 9893 and 9897 (S02W17) both possess the potential to
produce an isolated major flare.
Geomagnetic activity forecast :
Geomagnetic field activity is expected to be at quiet to unsettled
levels with isolated active periods possible on days one and two of
the forecast period. Day three should return to predominantly quiet
conditions. The greater than 2 Mev electron flux should be slightly
enhanced through the first day of the period.
Recent significant solar flare activity :
09-Apr-2002 1302Z M1.1
09-Apr-2002 0042Z M2.1