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  • Weekly Highlights of Solar and Geomagnetic Activity, 19 - 25 December 2

    From SWPC.Webmaster@noaa.gov@3:633/280.2 to All on Tue Dec 27 05:00:15 2022
    Subject: Weekly Highlights of Solar and Geomagnetic Activity, 19 - 25 December 2022

    :Product: Weekly Highlights and Forecasts
    :Issued: 2022 Dec 26 0226 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
    19 - 25 December 2022

    Solar activity reached moderate levels on 20 Dec. Region 3169 (N19,
    L=116, class/area=Dho/290 on 21 Dec) produced an M1/Sf at 20/1406
    UTC which was the largest event of the period. Low levels of solar
    activity and C-class flare activity were observed throughout the
    remainder of the period. A CME from 24 Dec was determined to have an Earth-directed component, and is expected to arrive on 27 Dec. No
    other 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 reached
    high levels on 24-25 Dec, and normal to moderate levels were
    observed on 17-23 Dec.

    Geomagnetic field activity reached minor storm levels on 23 Dec, and
    active levels on 19, 22, and 24 Dec, all due to CH HSS influences.
    Quiet to unsettled field activity were observed throughout the
    remainder of the period.

    Forecast of Solar and Geomagnetic Activity
    26 December - 21 January 2023

    Solar activity is expected to be low throughout the period with a
    slight chance for M-class flare activity.

    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 26 Dec-03 Jan, and 20-21 Jan.
    Normal to moderate levels are expected to persist throughout the
    remainder of the period.

    Geomagnetic field activity is expected to reach minor storm levels
    on 27 Dec due to the anticipated arrival of a CME from 24 Dec in
    addition to positive polarity CH HSS influences. Minor storms are
    expected again on 03 Jan and 19-20 Jan due to the influences of
    multiple recurrent CH HSSs. Active conditions are expected on 28,
    30-31 Dec and 04, 18 Jan. Quiet and quiet to unsettled activity are
    expected to persist throughout the remainder of the period.


    --- MBSE BBS v1.0.8 (Linux-x86_64)
    * Origin: NOAA Space Weather Prediction Center (3:633/280.2@fidonet)