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.

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/05/14Kp7 (G3)
Number of spotless days in 2019:76
Current stretch spotless days:3

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