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.
Solar activity reached moderate levels (R1-Minor) as newly numbered Region 3324 (N15W12, Bxo/beta) produced an impulsive M1.5 flare at 02/0241 UTC. The region decayed slightly to a Bxo group. Region 3315 (S17W88, Dao/beta) produced a C3.9 flare at 02/1411 UTC as the region departed the visible disk. A C3.3 flare was observed from new Region 3326 (N25E73, Hsx/alpha) at 02/1524 UTC. Region 3323 (S07E45, Esi/beta-gamma) produced a C6.3 flare at 02/2242 UTC. New Region 3325 (N11W02, Bxo/beta) was numbered this period. The remaining six regions were stable with no notable changes during the period. No Earth-directed CMEs were observed.
Solar activity is expected to be low with a chance for M-class flares and a slight chance for X-class flares on 03-05 Jun.
The solar wind environment began the period mildly enhanced before returning to a more ambient state by about 02/0300 UTC. Total field strength peaked near 5 nT while the Bz component varied weakly between +2/-4 nT. Solar wind speeds slowly decayed through the period from about 445 km/s to near 360 km/s. The phi angle was oriented towards the Sun (negative).
Positive polarity CH HSSs are forecast to become geoeffective on 03 Jun, with effects lasting through 05 Jun.
The geomagnetic field was at quiet levels.
G1 (Minor) geomagnetic storms are likely on 03 Jun with the onset of a positive polarity CH HSS. Gradual improvements are expected on 04 Jun with unsettled to active levels followed by quiet to unsettled conditions on 05 Jun.