Space Weather Forecast Discussion
Forecast Discussion
Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
Issued: 2019 Jan 18 1230 UTC

Solar Activity
.24 hr Summary...
Solar activity remained very low and no sunspots were present on the visible disk. No CMEs were detected in available coronagraph imagery.
.Forecast...
Solar activity is expected to remain very low on 18-20 Jan.

Energetic Particle
.24 hr Summary...
The greater than 2 MeV electron flux was at normal levels and the greater than 10 MeV proton flux continued at background values.
.Forecast...
Normal to moderate levels of the greater than 2 MeV electron flux is expected on 18-20 Jan. The greater than 10 MeV proton flux is expected to maintain background levels all three days.

Solar Wind
.24 hr Summary...
Solar wind parameters were indicative of influences of a negative polarity CH HSS. Total field strength was elevated and reached a peak of near 11 nT, while the Bz component was mostly oriented northward. Solar wind speed averaged near 475 km/s. The phi angle was predominantly negative.
.Forecast...
The solar wind environment is likely to remain enhanced through 18 Jan due to influences of the negative polarity CH HSS continue. 19-20 Jan are expected to experience nominal conditions as CH HSS influences wane.

Geospace
.24 hr Summary...
The geomagnetic field was quiet.
.Forecast...
Solar wind conditions are expected to remain elevated on 18 Jan in response to minor CH HSS effects. Quiet conditions are expected on 19-20 Jan as background-like conditions return.
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