Solar Report - 03/07/2017

by:  Gordon Rutherford

:Product: Forecast Discussion
:Issued: 2017 Mar 07 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. There were no spotted regions on the visible disk. No Earth-directed CMEs were observed in coronagraph imagery.

Solar activity is expected to be at very low levels during the forecast period (07-09 Mar).

Energetic Particles (24 hr Summary)
The greater than 2 MeV electron flux reached high levels with a peak flux of 29,900 pfu observed at 06/1620 UTC. The greater than 10 MeV proton flux remained at background levels throughout the period.

-->  Past the Solar Sector Boundary Crossing 3 days ago
The greater than 2 MeV electron flux is expected to reach high levels all three days of the forecast period (07-09 Mar) due to CH HSS effects. The greater than 10 MeV proton flux is expected to persist at background levels.

Solar Wind (24 hr Summary)
The solar wind environment remained enhanced due to a negative polarity, polar-connected CH HSS. Solar wind speed fluctuated between 575 km/s and 625 km/s for the period. Total field strength was steady around 5 nT, while the Bz component varied between +/- 5 nT. The phi angle was negative.

The solar wind environment is expected to remain enhanced on day one (07 Mar) under persistent CH HSS influence. Days two and three (08-09 Mar) should see a gradual return to near background conditions.

Geospace (24 hr Summary)
The geomagnetic field was at mostly unsettled to active levels, with an isolated G1 (minor) storming period (1800-21000 UTC), due to continued CH HSS effects.

Geomagnetic field conditions are expected to be at unsettled to active levels on day one (07 Mar), with occasional quiet periods, due to the enhanced solar wind environment. Day two (08 Mar) is expected to be at mostly quiet to unsettled levels. Conditions are expected to return to mostly quiet levels by day three (09 Mar) as CH HSS effects weaken.