Solar Activity Report for 6/28/04
- The Earth has moved inside of a high speed solar wind stream coming
from a coronal hole, and the solar wind speed is hovering around the
500 km/sec range. The K index has increased to 4, indicating
geomagnetic active conditions. It is possible we could see some minor
geomagnetic storms over the next few days. Sunspot region 635 has
rotated out of view, and as expected, the sunspot number and
background X-ray flux have dropped. There are three small sunspot
regions that have come into view. None of the three appear to have
any flare-generating potential at the present time.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 45
SFI : 89
A index : 16
K index : 4
Solar wind speed : 503.0 km/sec
Solar wind density : 3.0 protons/cc
Solar wind pressure : 1.8 nPa
IMF : 14.0 nT
IMF Orientation : 3.6 nT North
GOES-12 Background X-ray Flux level : B1
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 low to very low. An isolated C-class
flare is possible.
Geomagnetic activity forecast :
The geomagnetic field is expected to continue at quiet to unsettled
levels with isolated active periods. A weak high speed stream is
expected to produce minor disturbed periods.
Recent significant solar flare activity :