Product: Weekly Highlights and Forecasts
:Issued: 2021 Dec 13 0138 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC web contact www.swpc.noaa.gov/content/subscription-services
#
# Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity 06 - 12 December 2021
Solar activity ranged from very low to low. A C1.3 flare was observed at 06/0622 UTC from Region 2902 (N18, L=198, class/area Dsi/100 on 02 Dec), the largest of the period. All other numbered regions on the visible disk were quiescent. No Earth-directed CMEs were observed in available coronagraph imagery during the reporting period.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was normal to high levels. High levels were observed from 06-10 Dec following influence from a positive polarity CH HSS. Normal to moderate levels returned on 11-12 Dec.
Geomagnetic field activity ranged from quiet to unsettled. Isolated unsettled levels were observed on 06-07 Dec in response to influence from a positive polarity CH HSS and again on 11 Dec following the onset of a weak, slow-moving transient feature. The remainder of the summary period was at quiet levels.
Forecast of Solar and Geomagnetic Activity 13 December - 08 January 2022
Solar activity is expected to be at very low levels through the outlook period.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to range from normal to high levels. High levels are likely on 16-21 Dec and again on 29 Dec - 04 Jan in response to multiple, recurrent CH HSSs. Normal to moderate levels are expected for the remainder of the outlook period.
Geomagnetic field activity is expected to be at quiet to G1 (Minor) geomagnetic storm levels. G1 levels are likely on 27-28 Dec; active conditions are likely on 15 Dec and 29 Dec; unsettled conditions are likely on 13 Dec, 16-18 Dec and 30 Dec - 01 Jan. All elevations in geomagnetic activity are anticipated in response to multiple, recurrent CH HSSs. The remainder of the outlook period is likely to be at quiet levels under nominal solar wind conditions.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2021 Dec 13 0138 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC web contact www.swpc.noaa.gov/content/subscription-services
#
# 27-day Space Weather Outlook Table
# Issued 2021-12-13
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2021 Dec 13 80 8 3
2021 Dec 14 80 5 2
2021 Dec 15 82 12 4
2021 Dec 16 84 10 3
2021 Dec 17 84 10 3
2021 Dec 18 84 8 3
2021 Dec 19 84 5 2
2021 Dec 20 84 5 2
2021 Dec 21 84 5 2
2021 Dec 22 82 5 2
2021 Dec 23 82 5 2
2021 Dec 24 82 5 2
2021 Dec 25 82 5 2
2021 Dec 26 82 5 2
2021 Dec 27 82 15 5
2021 Dec 28 80 18 5
2021 Dec 29 78 12 4
2021 Dec 30 78 8 3
2021 Dec 31 78 8 3
2022 Jan 01 78 8 3
2022 Jan 02 78 5 2
2022 Jan 03 78 5 2
2022 Jan 04 80 5 2
2022 Jan 05 80 5 2
2022 Jan 06 80 5 2
2022 Jan 07 80 5 2
2022 Jan 08 80 5 2
(NOAA)
