Solar Activity Report for 3/28/02
- An exceptionally long-lived coronal hole is now rotating into an
Earth-pointing position. It does look a bit smaller than it did on its
3 pervious passes, but it is amazing that it has survived this long.
One solar rotation takes about 27 days. It is now estimated that we
will start experiencing high speed solar wind gusts from this coronal
hole around the first of next week. There are two sunspot regions
visible now that look like they have the potential for M-class flare
activity, those being 9878 and 9880.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 144
SFI : 176
A index : 3
K index : 1
Solar wind speed : 337.6 km/sec
Solar wind density : 2.8 protons/cc
Solar wind pressure : 0.5 nPa
IMF : 5.0 nT
IMF Orientation : 0.4 nT South
Conditions for the last 24 hours :
No space weather storms were observed for the past 24 hours.
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 low to moderate levels. Regions
9880 and 9885 are magnetically complex enough to produce isolated
M-class flare activity.
Geomagnetic activity forecast :
The geomagnetic field levels are expected to be at quiet to unsettled
conditions throughout the forecast period.
Recent significant solar flare activity :