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  • Weekly Highlights of Solar and Geomagnetic Activity, 02 - 08 December 2

    From SWPC.Webmaster@noaa.gov@3:633/280.2 to All on Tue Dec 10 05:00:09 2024
    Subject: Weekly Highlights of Solar and Geomagnetic Activity, 02 - 08 December 2024

    :Product: Weekly Highlights and Forecasts
    :Issued: 2024 Dec 09 0103 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
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    # Weekly Highlights and Forecasts
    #
    Highlights of Solar and Geomagnetic Activity
    02 - 08 December 2024

    Solar activity reached high levels on 08 Dec when Region 3912 (S07,
    L=80, class/area=Dai/220 on 07 Dec) produced an impulsive X2.2/2b
    flare at 08/0906 UTC; the largest event of the period. Associated
    with the X2.2 flare was a Castelli-U radio burst, a 870 sfu
    Tenflare, and a 360 sfu Type-II radio sweep. Regions 3912 and 3917
    (S07, L=09, class/area=Dac/210 on 08 Dec) produced the bulk of the
    M-class flares (R1-Minor events) observed over the course of the
    week. No Earth-directed CMEs were detected as a result of this
    week's activity.

    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 period.

    Geomagnetic field activity reached active levels on 03 Dec due to
    the passage of a CME from 27 Nov. Quiet and quiet to unsettled
    levels were observed throughout the remainder of the period.

    Forecast of Solar and Geomagnetic Activity
    09 December - 04 January 2025

    Solar activity is likely to reach moderate levels. M-class flares (R1-R2/Minor-Moderate) are likely, with a slight chance for X-class
    flares (R3-Strong or greater), throughout much of the outlook
    period.

    No proton events are expected at geosynchronous orbit; barring
    significant flare activity.

    The greater than 2 MeV electron flux at geosynchronous orbit is
    expected to be at normal to moderate levels throughout the outlook
    period.

    Geomagnetic field activity is expected to be quiet and unsettled
    over 09-14 Dec due to positive polarity CH HSS influences. Quiet and
    unsettled conditions are likely over 16-20 Dec, with active
    conditions possible on 19 Dec, due to negative polarity CH HSS
    influences.


    --- MBSE BBS v1.0.8.4 (Linux-x86_64)
    * Origin: NOAA Space Weather Prediction Center (3:633/280.2@fidonet)