Обсуждение космического прогноза погоды
Существующий: 2020 Jan 22 0030 UTC
Подготовлено Министерством торговли США, NOAA, Центром прогнозирования космической погоды и представлено SpaceWeatherLive.com
Solar activity was very low. No Earth-directed CMEs were observed in
Solar activity is expected to be at very low levels on 22-24 Jan.
The greater than 2 MeV electron flux was below alert threshold values,
and the greater than 10 MeV proton flux continued at background values.
The greater than 2 MeV electron is expected to be at moderate to high
levels on 22-24 Jan with CH HSS activity. The greater than 10 MeV proton
flux is expected to remain at background levels.
The solar wind environment became enhanced early in the UTC day with the
onset of a weak, negative polarity CH HSS. Total field peaked at 9 nT
with arrival, and Bz periodically deviated southward in excess of -5 nT
for short intervals. Solar wind speeds increased from around 275 km/s to
around 350 km/s with this feature. Phi was predominately negative.
CH HSS effects are expected to continue into 22 Jan. Thereafter a return
to nominal, background solar wind conditions is expected.
The geomagnetic field was mostly quiet, with an unsettled period later
in the period due to the weak CH HSS (negative polarity).
The geomagnetic field is expected to be at mostly quiet to unsettled
levels through 22 Jan with ongoing CH HSS activity. An isolated active
period (Kp=4) is also possible. Mostly quiet conditions can be expected
by 23 Jan through 24 Jan.