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  • Weekly Highlights of Solar and Geomagnetic Activity, 16 - 22 February 2

    From SWPC.Webmaster@3:633/10 to All on Mon Feb 23 13:00:09 2026
    Subject: Weekly Highlights of Solar and Geomagnetic Activity, 16 - 22 February 2026

    :Product: Weekly Highlights and Forecasts
    :Issued: 2026 Feb 23 0204 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
    16 - 22 February 2026

    Solar activity ranged from very low to moderate levels. The largest
    event was an M2.5 flare (R1-Minor) at 16/0435 UTC from a location
    beyond the east limb. A Type II radio sweep (est. 310 km/s) was
    observed on 18 Feb and associated with a large eruption just beyond
    the southeast limb. Only low-levels C-class activity was observed
    over 17-23 Feb. The sun ended the summary period free of sunspots on
    the visible disk for the first time since 2022.

    No proton events were observed at geosynchronous orbit.

    The greater than 2 MeV electron flux at geosynchronous orbit reached
    high levels over 16-20 Feb following sustained higher wind speeds
    from a positive polarity coronal hole. Normal to moderate levels
    were observed over 21-22 Feb.

    Geomagnetic field activity reached a peak of G2 (Moderate) levels on
    16 Feb due to influence from a positive polarity CH HSS. Quiet to
    unsettled levels were observed over 17-19 Feb. Active levels over
    20-21 Feb were likely associated with transient passage. By 22 Feb,
    a CIR ahead of a negative polarity CH HSS increased geomagnetic
    conditions up to G1 (Minor) geomagnetic storm levels. Wind speeds
    were observed between 600-700 km/s on 22 Feb as the high speed
    stream set in.

    Forecast of Solar and Geomagnetic Activity
    23 February - 21 March 2026

    Solar activity is expected to be at very low, with a good change for
    C-class flares and a slight change for M-class flare
    (R1/R2-Minor/Moderate) throughout the outlook 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 23 Feb - 03 Mar, 06-08 Mar, 11-12
    Mar, 15-19 Mar, and 21 Mar due to anticipated influence of multiple
    recurrent coronal holes. The remainder of the outlook period is
    likely to be at normal to moderate levels.

    Geomagnetic field activity is expected to reach G2 (Moderate) levels
    on 21 Mar.;G1 (Minor) geomagnetic storm levels are likely on 23 Feb,
    10 Mar, 14 Mar, and 20 Mar; active levels are likely on 24 Feb,
    05-06 Mar, 12-13 Mar, 15-16 Mar, and 19 Mar; unsettled levels are
    likely over 25 Feb, 07 Mar, 09 Mar, 11 Mar, and 17-18 Mar. All
    increases in geomagnetic activity are anticipated due to expected
    influence from multiple, recurrent coronal hole HSSs. The remainder
    of the outlook period is likely to be at mostly quiet levels.



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