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Solar Report - Sept 13th, 2016
:Product: Forecast Discussion :Issued: 2016 Sep 13 0030 UTC # Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center # Solar Activity (24 hr Summary)
------------------------------------------- Solar activity was very low. There was no significant flare activity observed during the reporting period. Region 2590 (N08W62, Axx/alpha) lost its trailer and was reported as a unipolar sunspot. Regions 2589 (N15W42, Cso/beta) and 2591 (N05W11, Bxo/beta) showed decreased areal coverage and decay in their trailer areas. There were no Earth-directed CMEs observed in available satellite imagery. . Forecast... Solar activity is expected to be very low with a chance for C-class flares throughout the forecast period (13-15 Sep).
Energetic Particles (24 hr Summary) The greater the 2 MeV electron flux was at normal to high levels with a maximum flux of 5,910 pfu observed at 12/2205 UTC. The greater than 10 MeV proton flux continued at background levels. . Forecast... The greater than 2 MeV electron flux is expected to be at normal to high levels for the forecast period (13-15 Sep). The greater than 10 MeV proton flux is expected to remain at background levels throughout the forecast period.
Solar Wind (24 hr Summary) Solar wind parameters indicated slightly enhanced interplanetary magnetic field conditions. Solar wind was steady at an average speed near 300 km/s. Total field values ranged from 3 nT to 13 nT while the Bz component remained mostly positive early in the period but dropped to -4 nT towards the later portion of the period. Phi angle was variable, ending the period in a positive (away) solar sector orientation. . Forecast... Solar wind parameters are expected to remain slightly enhanced for days one and two (13-14 Sep). A return to a nominal solar wind environment is expected on day three (15 Sep).
Geospace (24 hr Summary) The geomagnetic field was at quiet to unsettled levels. . Forecast... The geomagnetic field is expected to be at quiet to unsettled levels on days one and two (13-14 Sep) and mostly quiet conditions on day three (15 Sep).