Solar Activity Report for 2/21/06
- I suppose this falls under the hading of taking what we can get. The
Earth entered a high speed solar wind stream a couple of days ago, and
believe it or not, there were a few sightings of aurora! See this
link for some nice pictures.
http://www.spaceweather.com/aurora/gallery_01feb06.htm . It wasn't
much, but like I said, we'll take what we can get as were approach (or
are at?) the solar minimum. The aurora have subsided, although the
solar wind speed remains on the high side of 600 km/sec. The small
coronal that brought us the brief light show is rotating towards the
westernlimb of the solar disk, and the solar wind speed should drop
off in 48 hours or so. However, there is another small coronal hold
that will be reaching an Earth-pointing position in a few days. There
isn't anything to talk about in the way of sunspots, and I mean that
literally! The solar disk is blank yet again.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 0
SFI : 76
A index : 16
K index : 2
Solar wind speed : 637.0 km/sec
Solar wind density : 1.6 protons/cc
Solar wind pressure : 1.1 nPa
IMF : 2.6 nT
IMF Orientation : 2.0 nT South
GOES-12 Background X-ray Flux level : A0
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 continue at very low levels.
Geomagnetic activity forecast :
The geomagnetic field is expected to be at quiet to active levels. The
coronal hole should begin to wane late on 24 February with conditions
diminishing to quiet to unsettled levels.
Recent significant solar flare activity :