• Weekly Highlights of Solar and Geomagnetic Activity, 16 - 22 May 2022

    From SWPC.Webmaster@noaa.gov@21:1/5 to All on Mon May 23 13:00:11 2022
    XPost: rec.radio.amateur.space, rec.radio.shortwave, rec.radio.info

    :Product: Weekly Highlights and Forecasts
    :Issued: 2022 May 23 0201 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
    16 - 22 May 2022

    Solar activity reached moderate levels on 16,18, and 20 May, and
    high levels on 19 May, due to M-flare activity. Region 3017 (N14,
    L=084, class/area=Cro/40 on 22 May) produced an M2/Sf flare at
    16/1327 UTC and an M5/1f flare at 19/0719 UTC. Region 3014 (N24,
    L=105, class/area=Dkc/1190 on 20 May) was the largest and most
    magnetically complex region on the disk this period, and produced
    four M-flares; an M1/Sf flare at 18/2202 UTC, an M1/1n flare at
    19/1009 UTC, an M1/Sf flare at 19/1516 UTC, and an M3/1b flare at
    20/0745 UTC. Solar activity was at low levels over 21-22 May. No
    Earth-directed CMEs were detected this period.

    No proton events were observed at geosynchronous orbit.

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

    Geomagnetic field activity was quiet to unsettled on 16-17 May due
    to positive polarity CH HSS effects. Quiet to unsettled conditions
    prevailed over 18-19 May following CH HSS influences. Additional
    positive polarity CH HSS influences were observed over 20-22 May
    with quiet to active conditions measured in response on 20 and 22
    May. Quiet to unsettled levels were observed on 21 May.

    Forecast of Solar and Geomagnetic Activity
    23 May - 18 June 2022

    Solar activity is expected to be low with a chance for M-flares
    throughout the forecast period.

    No proton events are expected at geosynchronous orbit.

    The greater than 2 MeV electron flux at geosynchronous orbit is
    expected to reach moderate levels on 26 May-11 Jun, and high levels
    on 23-25 May and 12-18 Jun.

    Geomagnetic field activity is expected to reach active levels in
    response to multiple recurrent CH HSSs on 11, 13, 16, and 18 Jun.
    Quiet and quiet to unsettled levels are expected to prevail
    throughout the remainder of the period.

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