[Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2017 Dec 26 1230 UTC

[nw7us@sunspotwatch.com]

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Here is the current forecast discussion on space weather and geophysical activity, issued 2017 Dec 26 1230 UTC.

Solar Activity

24 hr Summary: Solar activity remained very low. Region 2692 (N18W29, Bxo/beta) continued to exhibit decay. No Earth-directed CMEs were observed in available imagery.

Forecast: Solar activity is expected to continue at very low levels over the next three days (26-28 Dec).

Energetic Particles

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

Forecast: The greater than 2 MeV electron flux is expected to remain at moderate levels all three days of the forecast period (26-28 Dec). The greater than 10 MeV proton flux is expected to continue at background levels throughout the forecast period.

Solar Wind

24 hr Summary: Solar wind parameters indicated a waning conditions from a negative polarity CH HSS. Total field strength ranged between 3-9 nT while the Bz component varied between +/-5 nT. Solar wind speeds ranged from 450 to 475 km/s. Phi angle remained in a negative solar sector.

Forecast: The solar wind environment is expected to remain at enhanced levels on day one (26 Dec) due to waning influence of a negative polarity CH HSS. A trend towards background levels is expected over days two and three (27-28 Dec).

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 day one (26 Dec) as effects from a negative polarity CH HSS begin to subside. Mostly quiet conditions are expected on days two and three (27-28 Dec).

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