Solar Activity Report for 7/7/03
- Today has been pretty quiet on the solar and geomagnetic fronts. The
solar wind speed has dropped off into the 500 km/sec range as the
Earth has exited the latest coronal hole solar wind stream
encountered. Sunspot region 375 is still visible, and is quite large.
It spans more than ten Earth diameters end to end. However, it has
been relatively quiet, and there haven't been any significant flares
in the last 24 hours. Tha background X-ray flux is holding steady.
There is a small coronal hole that is rotating into an Earth-pointing
position, and we could see some high speed solar wind from it on or
about the 11th.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 140
SFI : 133
A index : 17
K index : 2
Solar wind speed : 480.7 km/sec
Solar wind density : 0.7 protons/cc
Solar wind pressure : 0.2 nPa
IMF : 6.1 nT
IMF Orientation : 4.0 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 to moderate levels. Region 397
continues to exhibit the potential to produce isolated M-class flares.
Geomagnetic activity forecast :
The geomagnetic field is expected to be at predominantly unsettled to
isolated active levels throughout the period.
Recent significant solar flare activity :
06-Jul-2003 0032Z M2.3