Daily Forecast

DATE: 12 Dec 2019, composed at 08:46 SAST

CURRENT CONDITIONS: Solar activity is low with background X-ray flux below B-class levels. The solar wind speed is slowly decreasing with speeds from 450 km/s - 380 km/s, as the influence from coronal hole 89 (CH89) wanes. Geomagnetic conditions are at quiet levels. Local HF working frequencies are near monthly average predicted values.

EVENTS: None.

OUTLOOK: Solar activity is expected to be low with background X-ray flux below B-class levels. There are no visible sunspot regions on the Sun and no flaring activity is expected. The solar wind speed is expected to return to background levels later today. Another possible high speed stream from coronal hole 90 (CH90) may elevate the speed to around 450 km/s later on 13th December. Geomagnetic conditions are expected to be mostly quiet with a chance of isolated unsettled levels.

SYSTEMS AFFECTED: None.



3-Day Predictions

Date2019-12-132019-12-142019-12-15
SSN111
Se (WCI)331
T-Index-40 to -10/-17-40 to -10/-17-40 to -10/-34
Activitylowlowlow
Qfe4.04.03.0
Ap8.08.05.0
Magnetic ConditionsQuiet to UnsettledQuiet to UnsettledQuiet
SA HF Commsfairfairfair
SW Fadeoutsunlikelyunlikelyunlikely
MUFunstableunstableunstable