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  • Weekly Highlights of Solar and Geomagnetic Activity, 12 - 18 December 2

    From SWPC.Webmaster@noaa.gov@3:633/280.2 to All on Tue Dec 20 05:00:10 2022
    Subject: Weekly Highlights of Solar and Geomagnetic Activity, 12 - 18 December 2022

    :Product: Weekly Highlights and Forecasts
    :Issued: 2022 Dec 19 0151 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
    12 - 18 December 2022

    Solar activity reached high levels on 14-16 Dec, and low levels were
    observed on 12-13 and 18 Dec. Region 3165 (S19, L=279,
    class/area=Ekc/340 on 15 Dec) produced the bulk of this period's
    M-flare activity. In total 29 M-class flares were observed this
    period, of which two exceeded R2 (Moderate) levels (an M6/2b flare
    at 14/1442 UTC and an M5 flare at 15/2240 UTC). No Earth-directed
    CMEs were observed this period.

    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 was quiet to unsettled on 12-13 Dec, and
    quiet on 14-18 Dec. K-index calculations were unavailable due to an
    outage on 16-17 Dec.

    Forecast of Solar and Geomagnetic Activity
    19 December - 14 January 2023

    Solar activity is expected to be low with a chance for R1-R2
    (Minor-Moderate) events and a slight chance for R3 or greater events
    throughout the forecast 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 22-24 Dec, and 26 Dec-02 Jan.
    Normal to moderate levels are expected on 19-21, 25 Dec, and 03-14
    Jan.

    Geomagnetic field activity is likely to reach G1 (Minor) storm
    levels on 21, 25-28 Dec, and 03 Jan due to CH HSS influences. Active
    levels are likely on 19-20, 22, 29, 31 Dec. Quiet and quiet to
    unsettled levels are expected to prevail throughout the remainder of
    the forecast period.


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    * Origin: NOAA Space Weather Prediction Center (3:633/280.2@fidonet)