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  • Weekly Highlights of Solar and Geomagnetic Activity, 20 - 26 November 2

    From SWPC.Webmaster@noaa.gov@3:633/280.2 to All on Tue Nov 28 05:00:16 2023
    Subject: Weekly Highlights of Solar and Geomagnetic Activity, 20 - 26 November 2023

    :Product: Weekly Highlights and Forecasts
    :Issued: 2023 Nov 27 0159 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
    20 - 26 November 2023

    Solar activity ranged from low to moderate levels. Low levels were
    observed on 21-22 and 25-26 November. Moderate (R1-minor) levels
    were observed on 20 and 23-24 November. During the period, a total
    of 55 C-class and 4 M-class flares were observed from 13 different
    regions. Region 3492 (N19, L=345, class/area Ehi/380 on 24 Nov) was
    the most active region producing 23 C-class and 1 M-class flare.

    No proton events were observed at geosynchronous orbit.

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

    Geomagnetic field activity was at mostly quiet to unsettled levels
    on 20 and 23-24 November. Active, minor storm (G1-minor) and
    moderate (G2-moderate) levels were observed on 21-22 and 25-26
    November. Quiet to minor storm levels were observed on 21-22
    November due to positive polarity CH HSS influence. Minor to
    moderate storm levels were observed on 25 November due to CME and
    positive polarity CH HSS influence.

    Forecast of Solar and Geomagnetic Activity
    27 November - 23 December 2023

    Solar activity is expected to be at very low to low levels on 02-12
    December, with a chance for moderate (R1-minor) levels on 27-30
    November, 01 December and 13-23 December.

    No proton events are expected at geosynchronous orbit.

    The greater than 2 MeV electron flux at geosynchronous orbit is
    expected to reach moderate to high levels on 30 November, 01-04
    December and 07-09 December due to CH HSS influence.

    Geomagnetic field activity is expected to be at unsettled to active
    levels on 27-28 November, 05-07 and 12-13 December. Unsettled to G1
    (minor) levels are possible on 18-20 and 22-23 December. All
    activity is due to a variety of positive or negative polarity CH HSS
    influence.


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