Solar Activity

» 24 hr Summary: Solar activity was at low levels with only a few, minor C-class flares during the period. Region 4207 (N27W39, Dai/beta) continued to showed slight decay, mainly in its intermediate and trailing spots. Region 4213 (S14E08, Dai/beta-gamma) continued to grow and evolve throughout the period, developing a beta-gamma magnetic configuration. There were a few new spots showing some rudimentary development, but they remain unnumbered at this time. The remaining regions were either stable or in decay. No Earth-directed CMEs were detected in coronagraph imagery.

» Forecast: Solar activity is expected to be at low levels, with a chance for isolated M-class flares (R1-R2/Minor-Moderate) through 10 Sep.

Energetic Particle

» 24 hr Summary: The greater than 2 MeV electron flux was at normal to moderate levels, while the greater than 10 MeV proton flux remained at background levels.

» Forecast: The greater than 2 MeV electron flux is expected to reach high levels on 08-10 Sep, while the greater than 10 MeV proton flux is expected to remain at background levels through 10 Sep.

Solar Wind

» 24 hr Summary: Solar wind conditions remained slightly enhanced under a positive polarity CH HSS regime. Total magnetic field strength gradually decreased from 9 nT to 6 nT, while the Bz component ranged between +/-5 nT. Solar wind speed varied between 490 km/s and 620 km/s. Phi was predominantly positive throughout the period.

» Forecast: Mildly enhanced solar wind conditions are likely over 08-10 Sep under positive polarity CH HSS influence.

Geospace

» 24 hr Summary: The geomagnetic field was at quiet to unsettled levels, with an isolated active period.

» Forecast: Quiet to unsettled conditions, with isolated active periods, are expected on 08 Sep as positive polarity CH HSS influence persists. Diminishing CH HSS effects should allow conditions to return to mostly quiet to unsettled levels on 09-10 Sep.


Prepared by:
The U.S. Dept. of Commerce, NOAA, SWPC