Highlights of Solar and Geomagnetic Activity - 21 - 27 December 2020
Solar activity was at very low levels from 21-27 Dec. The largest flare observed was a B7.3 from Region 2795 (S18, L=318, class/area Dao/200 on 24 Dec) on 24 Dec. No Earth-directed CMEs were observed.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at moderate to high levels on 24-27 Dec due to CH HSS influence. Normal to moderate levels were observed on 21-23 Dec.
Geomagnetic field activity reached active levels on 21 and 23 Dec, and unsettled levels on 22, 24-25 Dec, all due to positive polarity CH HSS influences. Quiet levels were observed on 26-27 Dec.
Forecast of Solar and Geomagnetic Activity - 28 December - 23 January 2021
Solar activity is expected to be at very low levels throughout the period with a slight chance for low levels on 28 Dec - 04 Jan, and 17-23 Jan due to the flare potential from Region 2795 (S18, L=318, class/area Dao/200 on 24 Dec).
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at moderate to high levels on 28-29 Dec and 20-23 Jan due to recurrent CH HSS influences. Normal to moderate levels are expected for the remainder of the outlook period.
Geomagnetic field activity is expected to be at unsettled to active levels on 5-6 Jan and 18-20 Jan, and quiet to unsettled levels on 29 Dec, 3 Jan, and 21 Jan, all due to recurrent CH HSS influences.
Mostly quiet levels are expected on the remaining days in the outlook period.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2020 Dec 28 0139 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center