Solar Activity Report for 3/14/03
- ** G-1 Geomagnetic Storm In Progress **
** Aurora Watch In Effect **
The Earth has moved into a high speed, coronal hole generated solar
wind stream, and a G-1 class geomagnetic storm is in progress. It was
up to the G-2 level earlier today. An aurora watch is in effect.
Skywatchers, especially those in the higher latitudes, should
definitely keep an eye out for aurora tonight. The coronal hole
causing all the commotion is a pretty large one, and I wouldn't be
surprised to see the high solar wind speeds persist for several days.
Geomagnetic storm conditions are expected to last at least another
24 hours, and quite possibly more. The exact amount of geomagnetic
activity we see will be dependent upon how the Interplanetary Magnetic
Field (IMF) decides to orient itself over the next few days. There
are three numbered sunspot regions visible this evening. If those,
sunspot region 306 is easily the largest, and has at least an outside
chance of producing an M-class flare.
The current solar and geomagnetic conditions are :
NOAA sunspot number : 114
SFI : 139
A index : 17
K index : 5
Solar wind speed : 641.8 km/sec
Solar wind density : 2.3 protons/cc
Solar wind pressure : 1.7 nPa
IMF : 7.5 nT
IMF Orientation : 4.2 nT South
Conditions for the last 24 hours :
Space weather for the past 24 hours has been moderate. Geomagnetic
storms reaching the G2 level occurred.
Forecast for the next 24 hours :
Space weather for the next 24 hours is expected to be minor.
Geomagnetic storms reaching the G1 level are expected.
Solar activity forecast :
Solar activity is expected to be at low levels. Regions 306 (N07W19)
and 314 have C-class potential and a slight chance for M-class events.
Geomagnetic activity forecast :
The geomagnetic field is expected to be at quiet to active levels with
isolated minor storm levels possible. High speed stream effects are
expected to continue through the forecast period.
Recent significant solar flare activity :