Wednesday 05 October
last updated 04/2330 UT
Solar activity is expected to be at predominantly R1 levels on 05-Oct, with isolated R2 flares possible. The solar wind speed is expected to be moderate due to the prolonged declining influence of coronal hole high speed wind streams. The forecast arrival of coronal mass ejections for 04-Oct has failed to eventuate. Two coronal mass ejections associated with recent solar filament eruptions may reach the Earth over 06-07-Oct. The geomagnetic field is expected to be at G0-G1 levels for 05-Oct. An increase in geomagnetic activity to ASWAS G1 is expected during 06-07-Oct. HF conditions are now expected to be mostly normal on 05-Oct, with degraded conditions likely for middle to high latitudes during 06-07-Oct. Isolated shortwave fadeouts are likely on daylight HF circuits.