Pogoda kosmiczna - Dyskusja
Odnotowany: 2019 Aug 21 0030 UTC
Przygotowane przez Departament do Spraw Komercjalizacji USA, NOAA, Centrum Prognozowania Pogody Kosmicznej (SWPC) i przetworzony przez SpaceWeatherLive.com
Solar activity was at very low levels. No Earth-directed CMEs were
observed in available coronagraph imagery.
Solar activity is expected to continue at very low levels on 21-23 Aug.
The greater than 2 MeV electron flux reached moderate levels. The
greater than 10 MeV proton flux remained at background levels.
The greater than 2 MeV electron flux is expected to be at normal to
moderate levels on 21-23 Aug. The greater than 10 MeV proton flux is
expected to remain at background levels.
Solar wind parameters were at mostly nominal levels. Solar wind speeds
saw a measured increase over the course of the period, from background
levels at the beginning of the period, to just above 400 km/s by
periods end. Total field also observed a gradual enhancement to near 10
nT early in the period, before slowly returning to average near 4 nT by
the end of the day. The Bz component underwent a maximum southward
deflection of -6 nT early in the period, before becoming mostly positive
for the remainder of the period. The phi angle was primarily in a
negative solar sector.
A predominantly nominal solar wind regime is expected on 21-23 Aug,
with weak enhancements possible on 21 Aug associated with potential
interaction with a negative polarity CH HSS.
The geomagnetic field was quiet.
The geomagnetic field is expected to be mostly quiet on 21-23 Aug, with
isolated periods of unsettled levels possible on 21 Aug, due to
influence from a negative polarity coronal hole.