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 19.3.2024 kello 02:30

Auringon aktiivisuus

  • Edellinen vuorokausi

    Solar activity reached high levels (R2-Moderate) with a few M-class flares observed during the period. The strongest event of the period was an impulsive M6.7 flare observed at 18/1919 UTC from new Region 3615 (S12E62, Eao/beta-gamma). Since being numbered, this region has contributed numerous C-class flares as well. Region 3612 (N22, L=014) produced an M2.7 flare at 18/0332 UTC as it rotated around the NW limb. Shortly after, an additional M1.0 flare was observed from Region 3614 (N16E56, Dai/beta) at 18/0414 UTC. Emerging flux was noted to the SW of Region 3608 (N10W24, Bxo/beta) and was numbered 3616 (N02W31, Dai/beta). Since its emergence, this region has grown rapidly over the period. Between about 18/0200-0315 UTC, an 11 degree long filament erupted that was centered near N13W32. At this time, no discernable CME was observed in SOHO/LASCO imagery. No other Earth-directed CMEs were observed in available coronagraph imagery.

  • Lähipäivien ennuste

    Solar activity is expected to be low over 19-21 Mar, with a chance for M-class flares (R1-R2/Minor-Moderate).

Aurinkotuuli

  • Edellinen vuorokausi

    Solar wind parameters were mostly nominal. Solar wind speeds remained steady near 300 km/s through about 18/1940 UTC when an increase to about 357 km/s was observed. Total magnetic field strength was at or below 5 nT through 18/1935 UTC when an increase to 11 nT was observed. The Bz component was mostly positive through about 18/1300 UTC when a dip to -10 nT was observed. The Phi angle was oriented in a mostly positive sector. A solar sector boundary crossing was observed at 18/2016 UTC.

  • Lähipäivien ennuste

    Ambient to weakly enhanced solar wind conditions are expected to prevail over 19 Mar and the first half of 20 Mar. Enhanced solar wind conditions are expected after midday on 20 Mar through 21 Mar due to the anticipated arrival of CMEs associated with the 17 Mar filament eruption.

Geomagneettinen kenttä

  • Edellinen vuorokausi

    The geomagnetic field was quiet to unsettled.

  • Lähipäivien ennuste

    The geomagnetic field is expected to be at quiet to unsettled levels on 19 Mar through midday on 20 Mar. Periods of active conditions and G1 (Minor) storming are likely during the latter half of 20 Mar through 21 Mar due to the anticipated arrival of CMEs associated with the 17 Mar filament eruption.

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