Solar Activity Report for 5/25/04
- The effects of the recent round of high solar wind speed have tapered
off, and all is quiet for the time being. There are three sunspot
regions visible. One of them, region 618, is a large one and has the
potential for generating an M-class flare. It is squarely in an
Earth-pointing position, so if it does fire off anything significant,
and associated CME would likely be Earth-directed. There is a coronal
hole rotating into view, although it looks to be too far north on the
solar disk to send any high speed solar wind towards Earth. We'll
have a better idea in 48 hours or so when it comes more fully into view.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 101
SFI : 102
A index : 6
K index : 1
Solar wind speed : 452.9 km/sec
Solar wind density : 1.1 protons/cc
Solar wind pressure : 0.3 nPa
IMF : 4.0
IMF Orientation : 2.1 nT South
GOES-12 background X-ray flux level : B1
Conditions for the last 24 hours :
No space weather storms were observed for the past 24 hours.
Forecast for the next 24 hours :
Space weather for the next 24 hours is expected to be minor. Radio
blackouts reaching the R1 level are expected.
Solar Activity forecast :
Solar activity is expected to be at low to moderate levels. Region 618
remains capable of producing isolated M-class flare activity.
Geomagnetic activity forecast :
The geomagnetic field is expected to be at quiet to unsettled levels
throughout the period. NOTE: The ACE spacecraft orbit will bring ACE
nearly in line with the Sun from about May 30 to June 2, 2004. During
that time solar radio noise is expected to interfere with spacecraft
telemetry resulting in the loss of solar wind plasma, magnetic field,
and particle data.
Recent significant solar flare activity :