FIRST IMAGE OF LATE NIGHT PERIOD ON 29TH JAN 2011 SHOWING THE FIRST APPEARANCE OF CORONAL HOLE.
THE SECOND IMAGE IS OF 30TH JAN 2011 SHOWING CORONAL HOLE HAS STARTED ROTATING TOWARDS GEOEFFECTIVE POSITION
Akshay Deoras
Severe Space Weather Forecaster
A very large coronal hole has appeared on the surface of the sun and is rotating towards the Geoeffective position. Coronal Hole are the dark cooler areas on the corona of the sun where there are open magnetic fields ( Unipolar magnetic field) which permit the outflow of solar wind or the high speed coronal hole stream which brings a geomagnetic storm on the earth as the magnetic field of the earth becomes unsettled when the charged particles from the coronal stream strike it.
The coronal hole in in the Northern Hemisphere of the sun and is expected to become Geoeffective
( position from where earth is affected ) very soon as a result of which a geomagnetic storm is likely with Auroras at high latitude regions on the earth.
Unsettled levels in the Kp index ( Indicator of storming conditions) shall remain unsettled on 1st Feb 2011 and Auroras shall be visible in high latitude regions between 1st Feb to 4th Feb or so
A M1 class Solar Flare was erupted from the sun on Jan 28 2011 with giant Coronal Mass Ejection
but the will not affect the earth
