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  • Weekly Highlights of Solar and Geomagnetic Activity, 13 - 19 November 2

    From SWPC.Webmaster@noaa.gov@3:633/280.2 to All on Tue Nov 21 05:00:14 2023
    Subject: Weekly Highlights of Solar and Geomagnetic Activity, 13 - 19 November 2023

    :Product: Weekly Highlights and Forecasts
    :Issued: 2023 Nov 20 0128 UTC
    # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
    # Product description and SWPC contact on the Web
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    # Weekly Highlights and Forecasts
    #
    Highlights of Solar and Geomagnetic Activity
    13 - 19 November 2023

    Solar activity ranged from low to moderate levels. Low levels were
    observed on 13, 15-17 and 19 November. Moderate (R1-minor) levels
    were observed on 14 and 18 November. Region 3485 (S19, L=205,
    class/area Dai/080 on 12 Nov) produced an M1.0/Sn at 14/2305 UTC.
    New Region 3490 (N23, L=355, class/area Eac/150 on 19 Nov) produced
    three M-class flares; an M1.2 at 19/0542 UTC, and M1.1 at 19/1644
    UTC and an M1.0 at 19/2233 UTC.

    Early on 16 November, dimming was observed near N10W15. An
    associated CME was observed in SOHO/LASCO C2 imagery off the WNW
    limb at 16/0336 UTC. Model analysis of this CME suggested likely
    Earth impact early on 20 November.

    No proton events were observed at geosynchronous orbit.

    The greater than 2 MeV electron flux at geosynchronous orbit was at
    normal to moderate levels.

    Geomagnetic field activity was at mostly quiet to unsettled levels
    with isolated active and minor storm (G1-minor) levels early on 13
    November. The isolated active and minor storm levels was due to
    waning CME influence. The remainder of 13 November through 15
    November was at quiet to unsettled levels due to positive polarity
    CH HSS influence. Mostly quiet levels were observed on 16-19
    November.

    Forecast of Solar and Geomagnetic Activity
    20 November - 16 December 2023

    Solar activity is expected to be at very low to low levels with a
    chance for moderate levels on 20 November to 01 December and again
    on 14-16 December.

    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 25 November through 09 December due
    to CH HSS influence.

    Geomagnetic field activity is expected to be at unsettled to G1
    (minor) levels on 20 November due to likely CME influence. Unsettled
    to isolated active levels are expected on 21-25 and 27-28 November
    and 04-07 and 12-13 December due to CH HSS influence.


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