Space Weather Forecast Discussion
| Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center |
| Issued: 2019 Jan 18 1230 UTC |
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| Solar activity remained very low and no sunspots were present on the
visible disk. No CMEs were detected in available coronagraph imagery. |
| Solar activity is expected to remain very low on 18-20 Jan. |
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| The greater than 2 MeV electron flux was at normal levels and the
greater than 10 MeV proton flux continued at background values. |
| 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. |
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| 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. |
| 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. |
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| The geomagnetic field was quiet. |
| 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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