Space Weather Forecast - Discussion

Issued: 2019 May 20 1230 UTC
Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center and processed by SpaceWeatherLive.com

Solar activity

24 h Summary

Solar activity was very low. The solar disk was spotless. No Earth-directed CMEs were observed in available satellite imagery.

Forecast

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

Energetic Particles

24 h Summary

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

Forecast

The greater than 2 MeV electron flux is expected to be at normal to moderate levels on 20 May with high flux levels possible on 21-22 May in response to recurrent CH HSS influence. The greater than 10 MeV proton flux is expected to continue at background levels.

Solar Wind

24 h Summary

Solar wind parameters, as measured by the DSCOVR spacecraft, reflected weak enhancements. Total magnetic field strength was between 4-9 nT. The Bz component briefly reached a maximum southward deflection of -6 nT. Solar wind speeds were mostly between 350-400 km/s. Phi angle was predominantly positive.

Forecast

Weak enhancements in the solar wind are anticipated in response to multiple recurrent, negative polarity CH HSSs over 20-22 May.

Geospace

24 h Summary

The geomagnetic field was quiet to unsettled.

Forecast

The geomagnetic field is expected to be at quiet to unsettled levels throughout the forecast period (20-22 May) due to the anticipated influence of multiple recurrent, negative polarity CH HSSs.