Solar Activity Report for 4/18/05
- All is quiet for the moment, but the Earth should be moving into a
high-speed solar wind stream coming from a complex of small coronal
holes within the next 24 hours. Aurora in the higher latitudes are a
possibility. There are three sunspot regions visible, but none of
them look to have the potential of generating a significant flare.
One of them did kick off a C-5 flare on the 17th, which is actually
the strongest we've seen in awhile.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 44
SFI : 81
A index : 13
K index : 2
Solar wind speed : 369.4 km/sec
Solar wind density : 3.4 protons/cc
Solar wind pressure : 1.1 nPa
IMF : 4.2 nT
IMF Orientation : 3.3 nT South
GOES-12 Background X-ray Flux level : A4
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.
Geomagnetic activity forecast :
The geomagnetic field is expected to be quiet to unsettled with
possible isolated active conditions due to the effects of a coronal
hole high speed stream moving into geoeffective position.
Recent significant solar flare activity :