Friday 30 September
last updated 29/2338 UT
Solar activity is expected to be mostly at R0 levels on 30-Sep, with an increasing chance of R1 class flare activity due to a previously active solar region returning to the northeast solar limb. The solar wind speed has increased and is expected to be moderate for 30-Sep, with an increasing trend 01-02 Oct due to coronal hole wind streams. The geomagnetic field is expected to be initially at G0, with a chance of G1 periods on 30-Sep. An increase to G1 conditions is likely during 01-02 Oct, associated with solar coronal hole wind streams. HF conditions are expected to be initially good for 30-Sep, with degraded conditions expected on 01-02 Oct for the southern Australian region. Northern Australian region HF conditions are expected to remain normal.