Solar Activity Report for 2/26/05
- View Source** Aurora Watch In Effect **
The earth is moving inside of a high speed coronal hole solar wind
stream, and the solar wind speed has exceeded the 500 km/sec mark. So
far, the effect has been minimal, although that could change. An
aurora watch is in effect, and G-1 geomagnetic storm conditions are a
possibility. The single sunspot region visible, region 737, is
rotating over the western limb of the solar disk. With nothing
emerging over the eastern limb, look for the sunspot number to drop
towards zero, and the overall activity level to be very low as well
once we exit the coronal hole solar wind stream. Such is life when
you're drawing closer to solar minimum.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 27
SFI : 77
A index : 11
K index : 1
Solar wind speed : 535.1 km/sec
Solar wind density : 3.2 protons/cc
Solar wind pressure : 0.9 nPa
IMF : 7.9 nT
IMF Orientation : 5.9 nT North
GOES-12 Background X-ray Flux level : A1
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.
Geomagnetic activity forecast :
The geomagnetic field is expected to be at quiet to active with
isolated minor storm levels occurring through 28 Feb. A high-speed
solar wind stream associated with a coronal hole should become
geoeffective from 27 through 28 Feb. Quiet to unsettled levels are
expected for 01 Mar.
Recent significant solar flare activity :