• Weekly Highlights of Solar and Geomagnetic Activity, 21 - 27 March 2022

    From SWPC.Webmaster@noaa.gov@21:1/5 to All on Mon Mar 28 13:00:20 2022
    XPost: rec.radio.amateur.space, rec.radio.shortwave, rec.radio.info

    :Product: Weekly Highlights and Forecasts
    :Issued: 2022 Mar 28 0114 UTC
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    # Weekly Highlights and Forecasts
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    Highlights of Solar and Geomagnetic Activity
    21 - 27 March 2022

    Solar activity reached moderate levels at 25/0526 UTC due to an
    M1/1f flare from Region 2974 (S18, L=090, class/area Cso/90 on 23
    Mar). Type II (estimated shock velocity of 959 km/s) and Type IV
    radio sweeps were observed with this event. A subsequent CME
    signature was first observed in SOHO/LASCO C2 imagery beginning at
    25/0548 UTC. Analysis and modeling of the CME suggested an
    Earth-directed component with an anticipated arrival on 27 Mar.
    Solar activity reached low levels on 22-24 and 26-27 Mar. Very low
    levels were observed on 21 Mar.

    No proton events were observed at geosynchronous orbit.

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

    Geomagnetic field activity reached active levels late on 27 Mar due
    to positive-polarity CH HSS influence. Quiet to unsettled levels
    were observed on 22, 24-26 Mar. Quiet conditions prevailed on 21 and
    23 Mar.

    Forecast of Solar and Geomagnetic Activity
    28 March - 23 April 2022

    Solar activity is likely to be low, with a slight chance for R1-R2 (Minor-Moderate) radio blackouts, throughout the outlook period.

    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 04-07 Apr, with moderate levels
    expected during the remaining portion of the period.

    Geomagnetic field activity is likely to reach G1 (Minor) storm
    levels on 28 Mar due to combined CME and CH HSS effects. Active
    levels are expected on 03, 20-21 Apr due to recurrent CH HSS
    influence. Quiet to unsettled levels are anticipated throughout the
    remainder of the outlook period.

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