Solar Activity Report for 5/12/04
- All is still quiet tonight, although things could be getting a bit
more interesting soon. There is a small coronal hole that has rotated
into an Earth pointing position. The expectation is that we should be
seeing some solar wind gusts from it by the weekend. Two new sunspot
regions were numbered today, and there has been a fairly sharp rise in
the background X-ray flux. While none of the visible sunspots look to
have the potential for generating a significant flare at the present
time, that might change. The interplanetary magnetic field has also
turned to a south-pointing orientation. If that holds, it will serve
to enhance geomagnetic activity when the solar wind speed rises.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 83
SFI : 99
A index : 13
K index : 3
Solar wind speed : 414.9 km/sec
Solar wind density : 4.1 protons/cc
Solar wind pressure : 1.4 nPa
IMF : 7.7
IMF Orientation : 6.6 nT South
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 remain very low to low. There's a chance
for isolated C-class x-ray activity.
Geomagnetic activity forecast :
The geomagnetic field is expected to be at quiet to unsettled levels
with isolated periods of active for 13 May. From 14 through 15 May,
the activity should increase to mostly unsettled with periods of
active to minor storming due to the influence of a high-speed solar
wind stream, and the possible effects of an interplanetary transient.
Recent significant solar flare activity :