Pogoda kosmiczna - Dyskusja
Odnotowany: 2020 Apr 08 1230 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 2759 (N28, L=263) remained spotless,
but active, producing low level flares early in the UTC day. There were
no Earth-directed CMEs observed in available coronagraph imagery.
Solar activity is expected to be at very low levels on 08-10 Apr.
The greater than 2 MeV electron flux reached moderate levels. The
greater than 10 MeV proton flux maintained background levels.
The greater than 2 MeV electron flux is expected to continue at moderate
levels through 10 Apr. The greater than 10 MeV proton flux is expected
to continue at background levels.
Solar wind parameters underwent a slight enhancement during the latter
half of the period. Solar wind speeds steadily increased from 350-400
km/s. Total field increased to near 10 nT, and Bz was mostly not of note
until late in the period when it began to deviate southward in excess of
-5 nT. Phi was negative.
Solar wind parameters are likely to be at nominal levels through 9 Apr,
then become elevated late on 10 Apr with the arrival of a
polar-connected, negative polarity CH HSS. There is a slight chance for
an isolated disturbance on 8 Apr as a result of a smaller, negative CH
HSS that is near a geoeffective position. Otherwise background levels
are expected for much of the next 3 days until the main feature arrives
late on 10 Apr.
The geomagnetic field was quiet to unsettled.
A small disturbance may briefly elevate levels to unsettled on 8 Apr,
otherwise quiet conditions are anticipated for most of the forecast
period. Day 3 (10 Apr) is expected to be mostly quiet until late in the
UTC day when levels are expected to become unsettled with the arrival of
a polar-connected, negative polarity CH HSS.