Issued: 2020 Feb 19 1230 UTC
Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
Solar Activity 24 hr summary
Very low solar activity continued and the visible disk remained
spotless. No Earth-directed CMEs were observed in available coronagraph
Solar Activity Forecast
Very low solar activity is expected due to the absence of spots or
active regions of note 19-21 Feb.
Energetic Particle 24 hr summary
The greater than 2 MeV electron flux was normal to moderate and the
greater than 10 MeV proton flux remained at background values.
Energetic Particle Forecast
The greater than 2 MeV electron flux is expected to continue at normal
to moderate levels 19-21 Feb, with a chance for high levels 20-21 Feb
due to CH HSS influences. The greater than 10 MeV proton flux is
expected to continue at background.
Solar Wind 24 hr summary
Solar wind parameters exhibited an enhanced and disturbed IMF,
indicative of what was believed to be slow CME passage (from the 13 Feb
DSF). Total IMF strength reached 13 nT. The Bz component was prolonged
southward and reached a maximum deviation of -12 nT. The Bz component
slowly trended less southward, shifted primarily northward, and became
more variable around 18/1900 UTC. Solar wind speed was mainly 350-400
km/s until after 19/0000 UTC, when it increased and eventually reached
speeds in excess of 500 km/s. This was possibly due to connection with
the south polar, negative polarity CH HSS. The phi angle was
Solar Wind Forecast
The solar wind field is expected to remain enhanced and disturbed the
remainder of 19 Feb due to weak connection with the south polar,
negative polarity CH HSS. Continuing, but waning CH HSS influences are
likely to keep the solar wind state mildly disturbed 20-21 Feb.
Geospace 24 hr summary
The geomagnetic field was predominantly unsettled to active, with a
period of G1 (Minor) storm levels reached during the 19/0300-0600 UTC
The geomagnetic field is expected to be unsettled to active, with
another isolated period of G1 (Minor) geomagnetic storm conditions still
likely during the remainder of 19 Feb due to the disturbed and enhanced
solar wind field. Quiet to active conditions are likely on 20 Feb due to
continuing, but weakening CH HSS influences. 21 Feb is expected to be
quiet to unsettled.