Solar Activity Report for 9/5/05
- Between a CME impact and a persistent high-speed solar wind stream,
geomagnetic storm conditions have been observed on and off over the
last few days. However, the last good aurora display was back on the
24th of August, and it doesn't seem likely that there will be any more
for the time being. There is a single sunspot region visible, but it
doesn't look to have the ability to generate a significant flare.
There are no coronal holes visible at the present time. Activity
could pick up in a few days, however, as old sunspot region 798 comes
around for another pass.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 12
SFI : 75
A index : 15
K index : 3
Solar wind speed : 448.4 km/sec
Solar wind density : 2.2 protons/cc
Solar wind pressure : 0.7 nPa
IMF : 5.0 nT
IMF Orientation : 0.8 nT North
GOES-12 Background X-ray Flux level : A7
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 on 06 Sep, but is expected to
increase to at least moderate levels on 07 and 08 Sep as old active
Region 798 rotates onto the visible disk.
Geomagnetic activity forecast :
The geomagnetic field is expected to be quiet to unsettled with
isolated active periods. The large CME observed off the southeast limb
this period is not expected to be geoeffective.
Recent significant solar flare activity :