Bulletin: Current Conditions

07 December 2022

Solar activity is low with background X-ray flux at upper B-class levels. Several C-class flares were observed with the largest peak being a C1.1 at 06/21:42 UT originating from AR3157. There are seven sunspot regions (AR3153, AR3155, AR3156, AR3157, AR3158, AR3159, and AR3160) on the visible solar disk showing simple magnetic configurations. The solar wind speed is at background level with speed ranging between 320 – 410 km/s due to the waning effects of high-speed stream (HSS) from coronal hole 51 (CH51). There are a few filaments on the visible disk that appear to be unstable and will need to be monitored for any possible lift-offs. Geomagnetic conditions were at quiet levels. Local HF working frequencies are near monthly predicted values.

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Daily Conditions

Date and Time (UT)foF2 (MHz)hmF2 (km)T indexAp
Grahamstown2022-12-07 05:457.700298.662123
Hermanus2022-12-07 05:457.300273.105125
Planetary Ap2022-12-07 05:344


Predicted SANSA monthly T-Index for December 2022: 51