[Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2021 Aug 07 1230 UTC

[nw7us@sunspotwatch.com]

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Here is the current forecast discussion on space weather and geophysical activity, issued 2021 Aug 07 1230 UTC.

Solar Activity

24 hr Summary: Solar activity remained at very low levels with no spotted regions on the disk. B-class activity was observed from an area of enhanced plage on the E limb near N25. No Earth-directed CMEs were observed in available coronagraph imagery.

Forecast: Very low solar activity is expected to continue on 07-09 Aug.

Energetic Particles

24 hr Summary: The greater than 2 MeV electron flux reached moderate levels with a maximum of flux of 739 pfu observed at 06/1410 UTC. The greater than 10 MeV proton flux remained at background values.

Forecast: The greater than 2 MeV electron flux is expected to be at moderate to high levels on 07-09 Aug while the greater than 10 MeV proton flux is expected to continue at background levels.

Solar Wind

24 hr Summary: Solar wind parameters were indicative of a CIR ahead of a CH HSS. Total IMF strength was elevated and reached a peak of 12 nT while the Bz component underwent extended periods of a southward orientation. Solar wind speed increased from 300-400 km/s. Phi was variable throughout the period.

Forecast: A CIR, in advance of an isolated, positive polarity CH HSS, is expected to enhance solar wind parameters on 07 Aug. Further enhancements are possible on 08-09 Aug as additional isolated CH HSSs move into geoeffective positions.

Geospace

24 hr Summary: The geomagnetic field was at quiet to unsettled levels.

Forecast: Field conditions are expected to be at unsettled to isolated active levels on 07 Aug due to CIR arrival and CH HSS effects. Continued HSS influences are anticipated for 08-09 Aug with quiet to unsettled geomagnetic responses.

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Live data: SunSpotWatch.com

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