Solar Activity Report for 2/28/03
- For the past few days, the Earth has been inside of a high speed solar
wind stream coming from a coronal hole. On Wednesday night, at the
height of the geomagnetic activity, aurora were spotted in North
Dakota, northern Europe, and Alaska! See thus link for some
impressive pictures :
http://science.nasa.gov/spaceweather/aurora/gallery_01feb03.htm . The
solar wind speed is dropping off now as Earth exist the high speed
stream. However, more activity will be here in a few days, thanks to
another coronal hole following close on the heels of the one just
departed. We should be seeing the high speed solar wind gusts from it
along about 3/4. After an extended period of time with only very
small sunspot regions, we have what appears to be a pretty large one
just now coming into view. Sunspot region 296 is rotating over the
eastern limb of the solar disk, and will merit watching in the days ahead.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 77
SFI : 125
A index : 18
K index : 1
Solar wind speed : 430.1 km/sec
Solar wind density : 4.2 protons/cc
Solar wind pressure : 1.1 nPa
IMF : 4.4 nT
IMF Orientation : 1.1 nT North
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 at low levels for the next three days.
Geomagnetic activity forecast :
The geomagnetic field is expected to be at unsettled to active levels
as the high speed coronal hole stream continues.
Recent significant solar flare activity :