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  • Weekly Highlights of Solar and Geomagnetic Activity, 13 - 19 June 2022

    From SWPC.Webmaster@noaa.gov@21:1/5 to All on Mon Jun 20 13:00:10 2022
    XPost: rec.radio.amateur.space, rec.radio.shortwave, rec.radio.info

    :Product: Weekly Highlights and Forecasts
    :Issued: 2022 Jun 20 0240 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
    13 - 19 June 2022

    Solar activity ranged from low to moderate levels. Low levels were
    observed on 14-19 Jun with the majority of the C-class flares from
    Regions 3030 (N18, L=117, class/area Dai/230 on 19 Jun), 3031 (S26,
    L=130, class/area Eai/240 on 15 Jun), 3037 (S21, L=140, class/area
    Csi/060 on 17 Jun) and 3038 (N15, L=053, class/area Dai/140 on 19
    Jun). Moderate (R1-Minor) flare activity was observed on 13 and 16
    Jun. Region 3032 (N21, L=106, class/area Dai/180 on 13 Jun) produced
    an LDE, M3.4/1n event at 13/0407 UTC. Associated with this event
    were Type II (325 km/s) and Type IV Sweep signatures, a 670 sfu
    Tenflare and a CME signature analyzed with a potential arrival time
    of early on 15 Jun. Region 3031 produced an M1.6 at 16/0353 UTC.
    Other than the 13 Jun CME, no additional Earth-directed CMEs were
    observed.

    No proton events were observed at geosynchronous orbit.

    The greater than 2 MeV electron flux at geosynchronous orbit was at
    normal to moderate levels on 13-17 Jun. High levels were reached on
    18-19 Jun with a maximum flux reading of 2,950 pfu observed at
    19/1735 UTC.

    Geomagnetic field activity ranged from quiet to minor storm levels.
    Unsettled to G1 (Minor) geomagnetic storms were observed on 13 Jun
    due to positive polarity CH HSS influence. Mostly quiet levels were
    observed on 14 Jun. Unsettled to G1 (Minor) geomagnetic storms were
    observed on 15 Jun due to effects from the 13 Jun CME. 16 Jun saw
    unsettled to active levels as CME effects continued. Unsettled to
    active levels were observed on 17-19 Jun due to positive polarity CH
    HSS influence. During the period, solar wind speeds ranged from a
    low of near 440 km/s on 14 Jun to a high of near 650 km/s late on 17
    Jun. Total field was at mostly 5-10 nT through the period with the
    Bz component at mostly +/- 7 nT. The phi angle remained in a
    predominately positive orientation.

    Forecast of Solar and Geomagnetic Activity
    20 June - 16 July 2022

    Solar activity is expected to be at very low to low levels, with a
    chance for further M-class flares on 20-24 Jun due to potential
    flare activity from Regions 3031 and 3032.

    No proton events are expected at geosynchronous orbit.

    The greater than 2 MeV electron flux at geosynchronous orbit is
    expected to be reach high levels on 20-22 Jun, 27 Jun - 02 Jul and
    15-16 Jul due to CH HSS influence.

    Geomagnetic field activity is expected to reach unsettled levels on
    20 Jun, 23-26 Jun, 08-11 Jul and 14-16 Jul with active levels on 24
    Jun due to recurrent CH HSS activity.

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