XPost: rec.radio.amateur.space, rec.radio.shortwave, rec.radio.info

: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 SWPC contact on the Web
# https://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.

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