Vorhersage Details

Ausgestellt: 2026 May 16 1230 UTC
Erstellt von NOAA, Space Weather Prediction Center und verarbeitet SpaceWeatherLive.com

Sonnenaktivität

24h Zusammenfassung

Solar activity was at low levels. Region 4435 (N22W89, Dao/beta) produced the strongest flare of the period, a C9.5/Sf at 15/1614 UTC. Associated with the flare was a Type II radio sweep (est. 529 km/s). Only minor changes were observed in the three numbered active regions on the visible disk. No Earth-directed CMEs were observed in available coronagraph imagery.

Vorhersage

Solar activity is expected to remain predominately at low levels, with a chance for M-class (R1-R2/Minor-Moderate) flares through 18 May.

Energiereiche Teilchen

24h Zusammenfassung

The greater than 2 MeV electron flux was at normal to moderate levels. The greater than 10 MeV proton flux was at background levels.

Vorhersage

The greater than 2 MeV electron flux is expected to remain at moderate levels through 16 May, likely increasing to high levels on 17-18 May as -CH HSS influences persist. The greater than 10 MeV proton flux is expected to stay at background levels through 18 May.

Sonnenwind

24h Zusammenfassung

The solar wind parameters reflected increased influence from a negative polarity CH HSS. Total interplanetary magnetic field strength unsteadily increased from around 3 nT to reach as high as 17 nT. The Bz component briefly reached as far south as -14 nT. Phi was in a predominantly negative orientation. Wind speeds steadily increased to a peak of ~800 km/s between 15/2300-16/0330 UTC. A gradual decline to a speed near 650 km/s was observed by the end of the reporting period.

Vorhersage

Solar wind parameters are expected to continued to be enhanced through 18 May due to the persistent influence of the negative polarity CH HSS.

Geospace

24h Zusammenfassung

The geomagnetic field reached G1-G2 (Minor-Moderate) geomagnetic storm levels due to the influence of a CIR ahead of negative polarity CH HSS.

Vorhersage

G1 (Minor) conditions are expected to continue through 16 May due to the ongoing effects of a negative polarity CH HSS. Active to G1 (Minor) storm levels are likely to continue on 17 May, decreasing to unsettled to active conditions by 18 May as lingering CH HSS influences diminish.