Forecast Discussion

Product: Forecast Discussion Issued: 2019 Dec 14 1230 UTC Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
Solar Activity
.24 hr Summary… Solar activity was very low. The visible disk was spotless. No Earth-directed CMEs were observed in available coronagraph imagery.
.Forecast… Solar activity is expected to be at very low levels on 14-16 Dec.
Energetic Particles
.24 hr Summary… The greater than 2 MeV electron flux was at normal levels and 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 14-16 Dec. The greater than 10 MeV proton flux is expected to persist at background levels throughout the period.
Solar Wind
.24 hr Summary… Solar wind parameters, as measured by the ACE spacecraft, reflected nominal conditions. Solar winds decreased from near 375 km/s to around 360 km/s by the period’s end. Total field was at or below 5 nT. Phi angle was variable.
.Forecast… Solar wind parameters are expected to remain at nominal levels over 14-16 Dec.
Geospace
.24 hr Summary… The geomagnetic field was at quiet levels.
.Forecast… The geomagnetic field is expected to be quiet 14-16 Dec.
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