Issued: 2020 Oct 19 1230 UTC
Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
Solar Activity 24 hr summary
Solar activity was at very low levels with a few subfaint, B-class
x-ray events observed from Region 2776 (S13E04, Cso/beta). Region 2776
was stable throughout the period. No Earth-directed CMEs were observed
in available satellite imagery.
Solar Activity Forecast
Solar activity is expected to be very low with a slight chance for
C-class flare activity on 19-21 Oct.
Energetic Particle 24 hr summary
The greater than 2 MeV electron flux was at normal to moderate levels
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 be at normal to
moderate levels on 19-20 Oct, increasing to moderate to high levels on
21 Oct. The greater than 10 MeV proton flux is expected to persist at
Solar Wind 24 hr summary
Solar wind parameters were at nominal levels. Total field measurements
were at or below 7 nT, the Bz component varied between +/-5 nT, and
wind speed meandered between 300-375 km/s. Phi angle was variable
throughout the period.
Solar Wind Forecast
Solar wind parameters are expected to continue at nominal levels over 19
Oct and most of 20 Oct. Late on 20 Oct through 21 Oct, wind parameters
are expected to become enhanced as an isolated, negative polarity CH HSS
rotates into a geoeffective position.
Geospace 24 hr summary
The geomagnetic field was quiet.
The geomagnetic field is expected to be mostly quiet on 19-20 Oct.
Isolated unsettled periods are possible late on 20 Oct, increasing to
unsettled to active levels on 21 Oct, due to influence from an isolated,
negative polarity CH HSS.