Solar Activity Report for 12/28/05
- ** Aurora Watch In Effect **
The solar wind speed has climbed to the happy side of 700 km/sec, and
some very pretty aurora have been spotted and photographed over
northern Europe, as can be seen here.
http://www.spaceweather.com/aurora/gallery_01dec05.htm . The reason
for the activity is a medium-sized coronal hole that has rotated into
an Eerth-pointing position. Skywatchers in the higher latitudes
should continue to keep an eye out for aurora. The increased activity
is expected to continue for about another 24 hours before settling
down. On the sunspot scene, we have 5 small sunspot regions currently
visible, although none appear to have the potential of generating a
significant flare at the present time.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 61
SFI : 89
A index : 14
K index : 3
Solar wind speed : 725.1 km/sec
Solar wind density : 1.2 protons/cc
Solar wind pressure : 1.1 nPa
IMF : 4.0 nT
IMF Orientation : 3.8 nT South
GOES-12 Background X-ray Flux level : A9
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 remain at very low levels.
Geomagnetic activity forecast :
The geomagnetic field is expected to be at predominantly unsettled to
active levels with isolated minor storm periods possible through 29
December. A return to quiet to unsettled levels is expected on 30 and
31 December as the coronal hole moves out of geoeffective position.
Recent significant solar flare activity :