Diskussion av prognoserat rymdväder

Datum av rapporten: 2019 Jul 20 0030 UTC
Skapad av NOAA SWPC och bearbetad av SWL

Solaktivitet

Sammanfattning av de senaste 24 timmarna

Solar activity remained very low with a spotless visible disk. No Earth-directed CMEs were observed in available coronagraph imagery.

Prognos

Solar activity is expected to remain very low on 20-22 Jul.

Energirika partiklar

Sammanfattning av de senaste 24 timmarna

The greater than 2 MeV electron flux was at moderate to high levels with a maximum flux of 1,824 pfu observed at 19/1835 UTC. The greater than 10 MeV proton flux continued at background values.

Prognos

The greater than 2 MeV electron flux is expected to reach moderate to high levels on 20 Jul, decreasing to normal to moderate levels on 21-22 Jul. The greater than 10 MeV proton flux is expected to remain at background levels.

Solvind

Sammanfattning av de senaste 24 timmarna

Solar wind parameters reflected a background solar wind regime. Solar wind speed averaged near 360 km/s, total field strength ranged from 1 to 4 nT while the Bz component varied weakly between +/-2 nT. The phi angle was in a predominantly negative sector through about 19/1100 UTC, and alternating between a negative and positive orientation thereafter.

Prognos

Solar wind conditions are expected to become slightly enhanced midday on 20 Jul due to weak interaction with a small, equatorial, negative polarity CH HSS. The solar wind environment is expected to undergo a further enhancement late on 22 Jul due to interaction with a second equatorial, negative polarity CH HSS.

Geospace

Sammanfattning av de senaste 24 timmarna

The geomagnetic field was quiet.

Prognos

The geomagnetic field is expected to be at mostly quiet to isolated unsettled levels for 20-22 Jul due to influence from a pair of equatorial, negative polarity CH HSSs.