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Here is this week's space weather and geophysical report, issued 2019 Jan 07 0558 UTC.
Highlights of Solar and Geomagnetic Activity 31 December - 06 January 2019
Solar activity was at very low levels on 31 Dec - 05 Jan and increased to low levels on 06 Jan due to an isolated C1 flare at 06/1051 UTC from Region 2732 (N09, L=215, class/area Cao/090 on 03 Jan). No Earth-directed CMEs were observed during the period.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at normal levels on 05 Jan and normal to moderate levels on 01-04 Jan. High levels were observed on 31 Dec and 06 Jan due to enhancements associated with recurrent coronal hole high speed streams (CH HSS). The largest flux of the period was 2,020 pfu observed at 31/1930 UTC.
Geomagnetic field activity ranged from quiet to G1 (Minor) storm levels. Solar wind parameters began the period under a waning positive polarity CH HSS. Solar wind speed decreased from approximately 520 km/s on 31 Dec to 290 km/s by 03 Jan with total field at or below 6 nT. The geomagnetic field was at quiet to unsettled levels on 31 Dec - 01 Jan while quiet levels were observed on 02-03 Jan. At approximately 04/0420 UTC, total field began to increase to a maximum of 13 nT at 04/1705 UTC which was indicative of the arrival of a CIR preceding a negative polarity CH HSS. The Bz component reached a maximum southward deflection of -9 nT at 05/0200 UTC. Solar wind speed increased to a maximum of 565 km/s at 06/1350 UTC. The geomagnetic field responded with mostly unsettled periods late on 04 Jan, quiet to G1 (Minor) storm levels on 05 Jan, and quiet to unsettled levels on 06 Jan.
Forecast of Solar and Geomagnetic Activity 07 January - 02 February 2019
Solar activity is expected to be at very low levels on 07-19 Jan with a chance for C-flare activity on 20 Jan - 02 Feb due to the return of old Region 2732 (N09, L=215).
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at high levels on 07-12 Jan, 25-27 Jan and again on 02 Feb due to recurrent CH HSS influence.
Geomagnetic field activity is expected to reach unsettled levels on 07, 26 and 31 Jan. Unsettled to active levels are expected on 16 Jan, 24-25 Jan and 01-02 Feb. G1 (Minor) levels are likely on 24 Jan. Levels of elevated geomagnetic activity are anticipated due to recurrent CH HSS effects.
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![Weekly Propagation Summary - 2019 Jan 07 16:10 UTC]()
Live data and images: SunSpotWatch.com
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