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 26 1230 UTC.

Solar Activity

24 hr Summary: Solar activity remained very low. Region 2659 (N13W38) grew in areal coverage during the period but was inactive. It remained the only spotted numbered region on the disk. Solar x-ray flux backgrounds increased slightly over the period as well. No Earth-directed CMEs were observed during the summary period.

Forecast: Solar activity is expected to be very low, with a chance for C-class flares, throughout the forecast period (26-28 May).

Energetic Particles

24 hr Summary: The greater than 2 MeV electron flux reached high levels with a peak flux of 17,618 pfu. The greater than 10 MeV proton flux remained at background values.

Forecast: The greater than 2 MeV electron flux is expected to reach high levels again tomorrow on day one (26 May) with the anticipated arrival of the 23 May CME midday. A return to near background conditions is forecast for the second half of day one through days two and three (27-28 May). The greater than 10 MeV proton flux is expected to continue at background levels.

Solar Wind

24 hr Summary: Solar wind parameters remained indicative of background ambient conditions. Solar wind velocities gradually decreased from 400 km/s to approximately 300 km/s. Total field (Bt) was steady near 4 nT, while the Bz component fluctuated slightly between +/-3 nT. The phi angle remained in a negative sector during the period.

Forecast: Solar wind parameters are expected to remain at ambient conditions for the first half of day one (26 May). Mid to late day on day one, solar wind parameters are expected to become enhanced and disturbed with the arrival of the 23 May CME. Conditions should remain disturbed for days two and three (27-28 May).

Geospace

24 hr Summary: The geomagnetic field was quiet.

Forecast: Unsettled to active conditions are expected, with a slight chance for G1-Minor storm conditions, by midday on day one (26 May), with the arrival of the 23 May CME. Unsettled to active conditions are expected to continue on days two and three (27-28 May) with weak CME effects underway.

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