Solar Activity Report for 9/27/05
- There aren't any decent coronal holes in a squarely Earth-pointing
position, but there are a couple that are sending us a brush of solar
wind. The solar wind speed is low, but the density is high. We might
see some mild geomagnetic storm conditions within the next 48 hours.
Sunspot-wise, there isnt' much to talk about. Two small sunspot
regions are visible, and neither one looks to have the potential for
generating a significant flare.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 23
SFI : 77
A index : 13
K index : 3
Solar wind speed : 390.2 km/sec
Solar wind density : 11.7 protons/cc
Solar wind pressure : 3.0 nPa
IMF : 5.2 nT
IMF Orientation : 2.2 nT South
GOES-12 Background X-ray Flux level : A2
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 very low with a slight chance for an
isolated C-flare from Region 810 (N08W62).
Geomagnetic activity forecast :
The geomagnetic field is expected to be unsettled to active with minor
storm periods possible on 28 and 29 September, as a recurrent coronal
hole high speed stream moves into geoeffective position. Conditions
should decrease to mostly unsettled by 30 September.
Recent significant solar flare activity :