• Weekly Highlights of Solar and Geomagnetic Activity, 05 - 11 June 2023

    From SWPC.Webmaster@noaa.gov@21:1/5 to All on Mon Jun 12 13:00:09 2023
    XPost: rec.radio.amateur.space, rec.radio.shortwave, rec.radio.info

    :Product: Weekly Highlights and Forecasts
    :Issued: 2023 Jun 12 0122 UTC
    # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
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    # Weekly Highlights and Forecasts
    Highlights of Solar and Geomagnetic Activity
    05 - 11 June 2023

    Solar activity was moderate. There were two M-class flares during
    the period. The largest event was an M4.7 flare (R1-Minor) at
    07/1146 UTC from Region 3327 (S14, L=052, class/area = Dki/300 on 06
    June). Region 3331 (N18, L=066, class/area = Dro/20 on 07 June)
    produced an M2.5 flare (R1-Minor) at 09/1711 UTC. The remaining
    numbered regions on the visible disk were either quiet or produced
    C-class events.

    No proton events were observed at geosynchronous orbit.

    The greater than 2 MeV electron flux at geosynchronous orbit reached
    moderate levels each day of the highlight period.

    Geomagnetic field activity ranged from quiet to unsettled levels.
    Unsettled levels were reached on 06, 07, and 11 June. Quiet
    conditions were observed on 05 and 08-10 June.

    Forecast of Solar and Geomagnetic Activity
    12 June - 08 July 2023

    Solar activity is likely to be at low to moderate levels (R1-R2, Minor-Moderate) throughout the outlook period due to several complex
    regions currently on the visible disk and the anticipated return of
    several regions that have produced moderate level activity currently
    on the farside of the Sun.

    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 17-21 June in response to elevated
    wind speeds from multiple, recurrent CH HSSs. The remainder of the
    outlook period is anticipated to be at moderate levels.

    Geomagnetic field activity is expected to range from quiet to active
    levels. Active conditions are likely on 12-13, 16, 27-28 June and 09
    July with unsettled conditions likely on 17-18 June and 01-02 July
    due to recurrent CH HSS influence. Quiet conditions are expected for
    the remainder of the outlook period.

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