• Weekly Highlights of Solar and Geomagnetic Activity, 21 - 27 August 202

    From SWPC.Webmaster@noaa.gov@21:1/5 to All on Tue Aug 29 13:00:12 2023
    XPost: rec.radio.amateur.space, rec.radio.shortwave, rec.radio.info

    :Product: Weekly Highlights and Forecasts
    :Issued: 2023 Aug 28 0230 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
    21 - 27 August 2023

    Solar activity ranged from low to moderate. Region 3415 (S09, L=79, class/area=Dko/350 on 24 Aug) produced the strongest flare of the
    period, a long-duration M1.4/1n at 25/0109 UTC. Lower M-class X-ray
    flares (R1 - Minor) were observed from Region 3405 (N10, L=183, class/area=Eso/180 on 16 Aug) and an area around the E limb. The
    remaining active regions were relatively simple.

    Other activity included a Type II radio sweep on 26 Aug which was
    associated with activity just past the Sun's visible disk. None
    of the CMEs observed in available coronagraph imagery appeared to on
    the Sun-Earth line.

    No proton events were observed at geosynchronous orbit.

    The greater than 2 MeV electron flux at geosynchronous orbit was low
    to moderate levels over the reporting period.

    Geomagnetic field activity ranged from quiet to active conditions. A
    single period of active conditions were observed 27 Aug due to a
    period of sustained Bz south that reached -7 nT. Only quiet to
    unsettled conditions were observed for the remainder of the
    reporting period.

    Forecast of Solar and Geomagnetic Activity
    28 August - 23 September 2023

    Solar activity is expected to be at low levels with a slight chance
    for M-class (R1-R2 Minor-Moderate) activity throughout the outlook
    period.

    No proton events are expected at geosynchronous orbit.

    The greater than 2 MeV electron flux at geosynchronous orbit is
    expected reach high levels on 07-10 Sep due to recurrent CH HSS
    influence. The remaining days are likely to be at background to
    moderate levels.

    Geomagnetic field activity is expected to range from quiet to active
    levels. Active conditions are likely on 14 Sep, with unsettled
    conditions likely on 28-19 Aug, 06-08 Sep, 15-17 Sep and 23 Sep. All
    elevations in geomagnetic activity are anticipated due to recurrent
    CH HSS features. The remainder of the outlook period is expected to
    be at quiet levels.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)