[Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2016 Apr 23 1230 UTC

[nw7us@sunspotwatch.com]

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Here is the current forecast discussion on space weather and geophysical activity, issued 2016 Apr 23 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was very low. No flare activity was observed over the period. Region 2533 (S02E36, Hsx/alpha) was stable and quiet. No Earth-directed CMEs were observed in available coronagraph imagery.

Forecast: Solar activity is expected to be very low with a slight chance for C-class flares on days one through three (23-25 Apr).

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 was at background levels.

Forecast: The greater than 2 MeV electron flux is expected to be at normal to moderate levels for the forecast period (23-25 Apr). The greater than 10 MeV proton flux is expected to remain at background levels.

Solar Wind

24 hr Summary: Solar wind parameters indicated an enhancement earlier in the period believed to be associated with the positive polarity CH HSS. Total field reached 14 nT at 22/1250 UTC and declined to around 3-5 nT just after 23/0000 UTC. The Bz component deflected southward to a maximum of -11 nT at 22/1439 UTC, but was mostly north thereafter. Solar wind speed increased from around 430 km/s to a maximum of 617 km/s at 22/1922 UTC before decreasing to end of period values near 410 km/s. Phi angle was oriented in a positive (away) sector until 23/0040 UTC when it displayed some variations into a negative (towards) sector.

Forecast: Solar wind parameters are expected to continue to be near nominal levels over the next few days (23-25 Apr).

Geospace

24 hr Summary: The geomagnetic field was at predominately quiet to unsettled levels with an isolated active period observed during the 22/2100-2400 UTC interval due to CH HSS activity.

Forecast: The geomagnetic field is expected to be at quiet to unsettled levels for forecast period (23-25 Apr).

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Live data: SunSpotWatch.com

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