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  • Weekly Highlights of Solar and Geomagnetic Activity, 26 October - 01 No

    From SWPC.Webmaster@3:633/10 to All on Mon Nov 2 13:00:04 2026
    Subject: Weekly Highlights of Solar and Geomagnetic Activity, 26 October - 01 November 2026

    :Product: Weekly Highlights and Forecasts
    :Issued: 2026 Nov 02 0217 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
    26 October - 01 November 2026

    Solar activity was at low levels with nine C-Class flares observed.
    Region 4561 (S11, L=28, class/area=Dai/030 on 26 Oct) produced the
    largest event of the period: a C2.8 flare at 26/1840 UTC, as well as
    nearly all of the remaining C-class flares of the period. The only
    exception was a C1.5 flare at 26/0134 UTC from Region 4560 (N13,
    L=49, class/area=Fao/020 on 26 Oct). The only notable CME activity
    was from a filament lift off at approximately 26/2142 UTC from an
    area near N30E75. Analysis indicated mostly a miss, though a
    glancing blow was not ruled out of the question on 31 Oct.

    No proton events were observed at geosynchronous orbit.

    The greater than 2 MeV electron flux at geosynchronous orbit was at
    high levels throughout the period, with the exception of 31 Oct when
    values dropped to moderate levels.

    Geomagnetic field activity was at quiet levels 26-29 Oct, quiet to
    active levels on 30 Oct, unsettled to G2 (Moderate) levels on 31
    Oct, and quiet to G1 (Minor) levels on 01 Nov. Activity increased
    the last two days as a result of the onset of a positive polarity CH
    HSS combined with possible CME effects mixed in from the 26 Oct
    filament eruption.

    Forecast of Solar and Geomagnetic Activity
    02 November - 28 November 2026

    Solar activity is expected to be predominantly at low levels, with a
    slight chance to a chance for isolated M-class
    (R1-R2/Minor-Moderate) radio blackouts) flare activity associated
    with any developing spot groups during the period.

    No proton events are expected at geosynchronous orbit.

    The greater than 2 MeV electron flux at geosynchronous orbit is
    expected to be at moderate levels on 02 Nov and 06-18 Nov. Flux
    levels are anticipated to reach high levels on 03-05 Nov and 19-28
    Nov.

    Geomagnetic field activity is expected to be at mostly quiet levels
    on 03-04 Nov, 08 Nov, 13-15 Nov, and 20-25 Nov. Unsettled to active
    periods are anticipated on 02 Nov, 05-07 Nov, 09-12 Nov, and 26 Nov.
    An increase to G1, possibly G2 geomagnetic storm levels is likely on
    27-28 Nov. The increase in activity is associated with multiple
    recurrent coronal holes.


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