Previsioni Meteorologiche Spaziali - Discussione

Emesso: 2026 Apr 05 1230 UTC
Preparati dal Dipartimento di Commercio degli Stati Uniti, NOAA, Centro di Previsione Meteorologica Spaziale e elaborati da SpaceWeatherLive.com

Attività solare

Sommario di 24 ore

Solar activity reached moderate levels. Region 4409 (N02W21, Eai/beta-gamma) produced an M1.2/1f flare (R1-Minor) at 04/1211 UTC and an M1.0 flare (R1) at 04/2304 UTC, in addition to numerous C-class flares throughout the period. The region exhibited minor decay and separation among its leader spots. New Region 4412 (N08E15, Bxo/beta) was numbered and produced a few low-level C-flares late in the period. The remaining spotted regions on the visible disk were either mostly stable or in gradual decay. No Earth-directed CMEs were observed in available coronagraph imagery.

Previsione

Solar activity is likely to reach moderate (R1-R2/Minor-Moderate) levels, with a slight chance for X-class (R3/Strong) flares, over 05-07 Apr, driven primarily by the flare potential of Region 4409.

Particelle energetiche

Sommario di 24 ore

The greater than 2 MeV electron flux reached high levels with a peak flux of 2,420 pfu at 04/1600 UTC. The greater than 10 MeV proton flux continued a gradual decline towards background levels throughout the period.

Previsione

The greater than 2 MeV electron flux is expected to reach high levels on 05-07 Apr. There is a slight chance for the greater than 10 MeV proton flux to exceed S1 (Minor) solar radiation storm levels over 05-07 Apr.

Vento Solare

Sommario di 24 ore

Solar wind parameters suggested the return of influence from a negative polarity CH HSS. Total magnetic field strength was steady at around 5 nT and no significant periods of southward Bz were observed. Wind speeds gradually declined from ~650 km/s to between 550-600 km/s by the end of the period. Phi angle was predominantly oriented in the negative solar sector.

Previsione

The solar wind environment is expected to remain enhanced through 07 Apr due to waning negative polarity CH HSS influence.

Geospaziale

Sommario di 24 ore

The geomagnetic field reached active levels during the period under negative polarity CH HSS influences.

Previsione

The geomagnetic field is expected to reach active levels early on 05 Apr, with quiet to unsettled levels expected on 06-07 Apr, as negative polarity CH HSS influences gradually wane.