Pogoda kosmiczna - Dyskusja
Odnotowany: 2018 Apr 24 0030 UTC
Przygotowane przez Departament do Spraw Komercjalizacji USA, NOAA, Centrum Prognozowania Pogody Kosmicznej (SWPC) i przetworzony przez SpaceWeatherLive.com
Solar activity was very low. Region 2706 (N02E16, Cao/beta) was stable
and inactive. No Earth-directed CMEs were observed in available
Solar activity is expected to be very low, with a slight chance for
C-class flare activity, over the next three days (24-26 Apr).
The greater than 2 MeV electron flux reached high levels this period
with a peak flux of 17,500 pfu at 23/2005 UTC. The greater than 10 MeV
proton flux was steady at background levels throughout the period.
The greater than 2 MeV electron flux is expected to reach high levels
each of the next three days (24-26 Apr) and the greater than 10 MeV
proton flux is expected to persist at background levels throughout the
Solar wind speed exhibited a gradual decline from near 450 km/s to near
400 km/s by the end of period. Total field ranged from 3 to 5 nT and Bz
was generally variable. Phi angle was oriented in a negative (towards)
sector early in the period then varied between sectors through the
remainder of the day.
Solar wind parameters are expected to return to background levels on day
one (24 Apr) and persist into day two (25 Apr). Late on day three (26
Apr) the solar wind environment is expected to become enhanced with the
initial onset of a recurrent, positive polarity CH HSS.
The geomagnetic field was mostly quiet.
The geomagnetic field is expected to be generally quiet over the next
two days (24-25 Apr) under a nominal solar wind regime. Unsettled to
active levels are anticipated on day three (26 Apr) with the arrival of
a recurrent, positive polarity CH HSS.