Product: Weekly Highlights and Forecasts
:Issued: 2021 Aug 23 0105 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and web contact www.swpc.noaa.gov/content/subscription-services
#
# Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity 16 - 22 August 2021
Solar activity was low. Multiple C-class events were observed from Region 2859 (N19, L=140, class/area, Cao/140 on 22 Aug) including the largest, a C3 flare at 20/1557 UTC. No Earth-directed CMEs were observed in available imagery.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit reached moderate levels throughout the reporting period.
Geomagnetic field activity ranged from quiet to unsettled levels due to CH HSS influence.
Forecast of Solar and Geomagnetic Activity 23 August - 18 September 2021
Solar activity is expected to be very low with a chance for C-class flare activity.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to reach high levels on 27-30 Aug, with moderate levels throughout the remainder of the outlook period.
Geomagnetic field activity is expected to reach active levels on 25-26 Aug and 03 Sep, unsettled levels on 23-26 Aug and 02-03, 11-12 Sep due to recurrent CH HSS activity. Quiet levels are expected throughout the remainder of the outlook period.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2021 Aug 23 0105 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and web contact www.swpc.noaa.gov/content/subscription-services
#
# 27-day Space Weather Outlook Table
# Issued 2021-08-23
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2021 Aug 23 77 8 3
2021 Aug 24 77 8 3
2021 Aug 25 76 15 4
2021 Aug 26 75 10 4
2021 Aug 27 75 7 2
2021 Aug 28 75 7 2
2021 Aug 29 75 5 2
2021 Aug 30 75 5 2
2021 Aug 31 75 5 2
2021 Sep 01 75 5 2
2021 Sep 02 75 8 3
2021 Sep 03 73 12 4
2021 Sep 04 73 5 2
2021 Sep 05 73 5 2
2021 Sep 06 73 5 2
2021 Sep 07 73 5 2
2021 Sep 08 73 5 2
2021 Sep 09 73 5 2
2021 Sep 10 73 5 2
2021 Sep 11 73 10 3
2021 Sep 12 74 8 3
2021 Sep 13 74 5 2
2021 Sep 14 74 5 2
2021 Sep 15 74 5 2
2021 Sep 16 76 5 2
2021 Sep 17 76 5 2
2021 Sep 18 76 5 2
(NOAA)