• Weekly Highlights of Solar and Geomagnetic Activity, 26 June - 02 July

    From SWPC.Webmaster@noaa.gov@21:1/5 to All on Mon Jul 3 13:00:17 2023
    XPost: rec.radio.amateur.space, rec.radio.shortwave, rec.radio.info

    :Product: Weekly Highlights and Forecasts
    :Issued: 2023 Jul 03 0152 UTC
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    # Weekly Highlights and Forecasts
    Highlights of Solar and Geomagnetic Activity
    26 June - 02 July 2023

    Solar activity was generally at R1 (Minor) levels until 02 Jul when
    R3 (Strong) levels were reached. Weak M-class activity was observed
    from Regions 3340 (N20, L=234, class/area Eki/350 on 26 Jun) on
    26-28 Jun, Region 3354 (N15, L=168, class/area Fkc/1150 on 02 Jul)
    on 29 Jun and Region 3359 (S22, L=068, class/area Dai/060 on 02 Jul)
    on 01-02 Jul. Region 3354 produced an X1 flare at 02/2314 UTC. No Earth-directed CMEs were observed during the period.

    No proton events were observed at geosynchronous orbit.

    The greater than 2 MeV electron flux at geosynchronous orbit was at
    high levels on 27 Jun through 02 Jul with a maximum flux of 3,510
    pfu observed at 28/1555 UTC.

    Geomagnetic field activity was at mostly quiet to isolated unsettled
    levels throughout the period. A brief interval of active levels were
    observed the later half of 29 Jun due to a solar sector crossing
    from a negative to a positive sector.

    Forecast of Solar and Geomagnetic Activity
    03 July - 29 July 2023

    Solar activity is expected to be at low to R1-R2 (Minor-Moderate)
    levels throughout the forecast 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 03-06 Jul and 14-29 Jul due to CH
    HSS influence.

    Geomagnetic field activity is expected to reach unsettled levels on
    04-05 Jul, unsettled to active levels on 09-10 Jul with G1-G2
    (Minor-Moderate) levels likely on 12-13 Jul due to recurrent CH HSS
    activity. Quiet to unsettled levels are expected on 14-29 Jul.

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