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Old June 7th 21, 06:00 PM posted to rec.radio.amateur.dx,rec.radio.amateur.space,rec.radio.shortwave,rec.radio.info
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Default Weekly Highlights of Solar and Geomagnetic Activity, 31 May - 06 June 2021

:Product: Weekly Highlights and Forecasts
:Issued: 2021 Jun 07 0121 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
31 May - 06 June 2021

Solar activity was at very low levels on 31 May, and 02-06 June
while low levels were reached on 01 June. The majority of the flare
activity, including the C1.6 flare on 01 June, was caused by Region
2827 (N11, L=78, class/area Dso/110 on 31 May). B-class activity was
observed by Regions 2828 (S31, L=69, class/area Axx/10 on 31 May)
and 2829 (S18, L=12, class/area Cro/30 on 05 June).

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
normal to moderate levels for the highlight period.

Geomagnetic field activity was quiet to unsettled for the highlight
period with no significant activity.

Forecast of Solar and Geomagnetic Activity
07 June - 03 July 2021

Solar activity is expected to be at very low to low levels.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to be at high levels on 11-14 June and 20-22 June due to
recurrent coronal hole high speed stream (CH HSS) influences.

Geomagnetic field activity is expected to be at unsettled to active
levels on 08 June and 16 June due to recurrent CH HSS influences.
Quiet to unsettled levels are expected for the remainder of the
outlook period.


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