Tällä sivulla voit lukea NOAA SWPC:n julkaisemat kommentit auringon havaitusta aktiivisuudesta edellisen vuorokauden kohdalta sekä muutaman seuraavan vuorokauden kattavan ennusteen. Uusin alkuperäinen julkaisu on luettavissa täällä. Tiedot päivittyvät kaksi kertaa vuorokaudessa.

Julkaistu 3.12.2021 kello 02:30

Auringon aktiivisuus

  • Edellinen vuorokausi

    Solar activity was very low with three sunspot groups present on the visible disk. The most interesting region was 2902 (N18W33, Dsi/beta) as it grew in areal coverage in the intermediate and trailer spots the first half of the reporting period. However, it underwent decay as the day progressed. The remaining regions were stable and inactive. No Earth-directed CMEs were observed in available coronagraph imagery.

  • Lähipäivien ennuste

    Very low solar activity is expected to continue 03-05 Dec, with a slight chance for C-class flares.

Aurinkotuuli

  • Edellinen vuorokausi

    Solar wind parameters were indicative of a slightly enhanced and disturbed state due mostly to CH HSS influences. Total IMF strength ranged primarily from 4-6 nT; while the Bz component underwent a few periods of prolonged southward direction. Solar wind speed slowly weakened from near 535 km/s to ~475 km/s. The phi angle was predominantly positive.

  • Lähipäivien ennuste

    Minor flanking influences from the 29 Dec CME are anticipated on 03 Dec as the transient arrives, but likely passes mostly south of Earth. Also, varying influences of isolated, positive polarity CH HSS features will keep the solar wind field agitated and mildly enhanced 04-05 Dec.

Geomagneettinen kenttä

  • Edellinen vuorokausi

    The geomagnetic field was quiet to unsettled in varied response to the disturbed solar wind field.

  • Lähipäivien ennuste

    Quiet to active conditions are anticipated on 03 Dec due to nearby passing CME influences coupled with CH HSS effects. Mainly quiet to unsettled conditions are likely 04 Dec as any CME effects wane, but HSS effects continue. 05 Dec is likely to experience quiet to unsettled conditions, with an isolated active period due to slightly increased HSS effects.

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