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Tuesday, August 24, 2021

Weekly Propagation Forecast Bulletins

 

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)