Here is the current forecast discussion on space weather and...

Here is the current forecast discussion on space weather and geophysical activity, issued 2017 May 29 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was at low levels. Region 2659 (N13W80, Dao/beta) produced a C3/Sf flare at 28/1928 UTC, the strongest of the period. Despite an increase in x-ray activity, the region continued a trend of gradual decay and consolidation. No Earth-directed CMEs were observed in available coronagraph imagery.

Forecast: Solar activity is expected to be at very low levels throughout the forecast period (29-31 May). There is a chance for additional isolated C-class flare activity on days one and two (29-30 May) as Region 2659 approaches the west limb.

Energetic Particle

24 hr Summary: The greater than 2 MeV electron flux was at normal to moderate levels this period in response to enhanced geomagnetic field activity associated with the influence of the 23 May CME. The greater than 10 MeV proton flux was steady at background levels throughout the period.

Forecast: The greater than 2 MeV electron flux has potential to reach high levels over the next three days (29-31 May) in response to the enhanced near-Earth solar wind environment associated with the passage of the 23 May CME.

The greater than 10 MeV proton flux is expected to persist at background levels throughout the forecast period (29-31 May).

Solar Wind

24 hr Summary: Solar wind parameters, as measured by the DSCOVR spacecraft, reflected continuously weakening enhancement from the 23 May CME. Total magnetic field strength varied between 9-17 nT. The Bz component was mostly positive after 28/1500 UTC with another rotation towards negative at the very end of the period. Solar wind speeds were between 350-375 km/s, with a gradual increase to 400 km/s during the later part of the reporting period. Phi rotated to the positive sector after 28/2300 UTC.

Forecast: Solar wind parameters are expected to gradually transition from the trailing end of the 23 May CME back towards nominal conditions by the end of day one (29 May). Background solar wind parameters are expected on days two and three (30-31 May) with the return to a nominal solar wind regime.

Geospace

24 hr Summary: The geomagnetic field was at quiet to active conditions due to the weakening influence of the 23 May CME.

Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on day one (29 May) as CME effects wane. Generally quiet conditions are expected for days two and three (30-31 May) with the return of a nominal solar wind regime.

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