Solar Activity Report for 12/19/04
- For the past few days, the Earth has been inside of a high speed solar
wind stream coming from a coronal hole, although you might not have
not have noticed anything. Although the solar wind speed did kick up
into the high 500's, there was little, if any, geomagnetic effect.
The solar wind speed is decreasing now, so it is unlikely that we will
see any effects from this event. I don't see anything noteworthy in
the way of sunspots or coronal holes right now, so I would expect the
next several days to be quiet.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 29
SFI : 94
A index : 3
K index : 2
Solar wind speed : 405.3 km/sec
Solar wind density : 5.6 protons/cc
Solar wind pressure : 1.6 nPa
IMF : 4.0 nT
IMF Orientation : 1.6 nT North
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 :
No space weather storms are expected for the next 24 hours.
Solar activity forecast :
Solar activity is expected to be very low to low. Isolated C-class
flares are possible from Region 713.
Geomagnetic activitty forecast :
The geomagnetic field is expected to be quiet to unsettled. Isolated
active periods are possible on 22 December.
Recent significant solar flare activity :