Solar Activity Report for 4/6/03
- The solar wind speed has dropped below the 400 km/sec mark, giving a
pause in the geomagnetic activity before the solar wind speeds start
increasing again in a day or two. There is a medium-sized coronal
hole that is rotating into an Earth-pointing position that's going to
provide the solar wind gusts for the next round activity, which is
expected to start on the 8th or 9th. The solar wind speed is on the
decline for the time being, as two sunspot regions, 321 and 324, are
now rotating out of view over the western limb of the solar disk.
They may still get off a parting shot in the form of an M-class flare
before they dissapear completely.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 94
SFI : 137
A index : 22
K index : 3
Solar wind speed : 370.2 km/sec
Solar wind density : 3.8 protons/cc
Solar wind pressure : 0.9 nPa
IMF : 3.3 nT
IMF Orientation : 0.5 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 :
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 levels with a chance of
isolated M-class activity. Regions 324 and 321 have the potential for
Geomagnetic activity forecast :
The geomagnetic field is expected to be at unsettled to active
conditions. Elevated solar wind speeds and oscillating Bz are expected
to gradually decline over the next few days. Late on day two or early
on day three a weak CME shock from the M1.9 flare on 04 April may
result in isolated active to minor storm conditions.
Recent significant solar flare activity :