Pogoda kosmiczna - Dyskusja
Odnotowany: 2018 Dec 19 1230 UTC
Przygotowane przez Departament do Spraw Komercjalizacji USA, NOAA, Centrum Prognozowania Pogody Kosmicznej (SWPC) i przetworzony przez SpaceWeatherLive.com
Solar activity remained very low and the visible disk was spotless. No
Earth-directed CMEs were observed in available coronagraph imagery.
Very low solar activity is expected to continue 19-21 Dec due to a lack
of spot groups or notable active regions.
The greater than 2 MeV electron flux was at normal to moderate levels
and the greater than 10 MeV proton flux was at background values.
The greater than 2 MeV electron flux is expected to continue at normal
to moderate levels 19-21 Dec and the greater than 10 MeV proton flux is
expected to remain at background.
Solar wind parameters reflected weak, negative polarity CH HSS
influence. Total field strength varied between 5 to 9 nT, the Bz
component fluctuated between +/- 5 nT, while the phi angle remained
predominantly negative. Solar wind speed began the period near 400 km/s
before beginning a slow and unsteady rise to end the period near 490
The solar wind environment is expected to remain slightly enhanced on 19
Dec due to influences from a negative polarity CH HSS. Waning conditions
are expected on 20 Dec as residual CH HSS influence diminishes. A return
to more ambient-background like conditions is expected on 21 Dec.
The geomagnetic field was mostly quiet with an isolated unsettled
The geomagnetic field is expected to be at quiet to unsettled levels on
19 Dec due to weak influence from a negative polarity CH HSS. A return
to mostly quiet conditions is expected for 20-21 Dec as the solar wind
environment weakens to nominal, background levels.