• Weekly Highlights of Solar and Geomagnetic Activity, 25 - 31 July 2022

    From SWPC.Webmaster@noaa.gov@21:1/5 to All on Mon Aug 1 13:00:10 2022
    XPost: rec.radio.amateur.space, rec.radio.shortwave, rec.radio.info

    :Product: Weekly Highlights and Forecasts
    :Issued: 2022 Aug 01 0147 UTC
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    # Weekly Highlights and Forecasts
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    Highlights of Solar and Geomagnetic Activity
    25 - 31 July 2022

    Solar activity was low. The strongest event of the period was a C9
    flare at 31/2309 UTC from an area around the NE limb. Region 3068
    (S15, L=208, class/area=Eso/110 on 31 Jul) was the mostly complex on
    the visible disk by the end of the reporting period. The region
    continued to increase in area around its leader spot and developed
    additional intermediate spots through 31 Jul. The remaining active
    regions were relativley simple and quiet or in decay as they rotated
    around the W limb.

    Several CME were observed in available coronagraph imagery but none
    appeared to have an Earth-directed component.

    No proton events were observed at geosynchronous orbit.

    The greater than 2 MeV electron flux at geosynchronous orbit was at
    moderate to high levels. High levels were observed on 25-28 Jul and
    31 Jul while moderate levels observed on 29-30 Jul.

    Geomagnetic field activity ranged from quiet to active levels.
    Active levels were observed on 26 Jul after a period of prolonged
    southward Bz and on 31 Jul due to the onset of coronal hole
    influence. Unsettled levels were reached 25 Jul, 27-28 Jul, and 30
    Jul, mostly due to more periods of sustained southward Bz. The
    remainder of the reporting period was quiet.

    Forecast of Solar and Geomagnetic Activity
    01 August - 27 August 2022

    Solar activity is expected to be very low over the outlook period.
    Most of the regions that are expected to rotate back onto the
    visible disk were either in decay or relatively simple and quiet as
    they rotated around the W limb.

    No proton events are expected at geosynchronous orbit.

    The greater than 2 MeV electron flux at geosynchronous orbit is
    expected to range from moderate to high levels. High levels are
    likely on 12-16 Aug, and again on 18-24 Aug. The remainder of the
    outlook period is likely to reached moderate levels. All
    enhancements in electron flux are anticipated in response to
    multiple, recurrent CH HSSs.

    Geomagnetic field activity is expected to be at quiet to G1 (Minor)
    geomagnetic storm levels. G1 conditions are likely on 03 Aug and 17
    Aug; active conditions are likely on 01 Aug, 04-05 Aug, and 18-19
    Aug; unsettled conditions are likely on 06 Aug, 11-12 Aug, and 20
    Aug. the remainder of the outlook period is expected to be at mostly
    quiet levels. All elevated levels of geomagnetic activity are due to
    multiple, recurrent, CH HSSs.

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