Daily Forecast

DATE: 17 Aug 2018, composed at 08:44 SAST

CURRENT CONDITIONS: Solar activity is low with background X-ray flux below B-class levels. The solar wind speed is elevated with speeds between 450 km/s - 500 km/s due to the ongoing influence of coronal hole 16 (CH16) high speed stream. Geomagnetic conditions are at active levels. Local HF working frequencies are slightly elevated monthly average predicted values.

EVENTS: None.

OUTLOOK: Solar activity is expected to remain low with background X-ray flux below B-class levels. There is one tiny sunspot visible on the solar disk with simple magnetic configuration and no flaring activity is expected. The solar wind speed is expected to remain elevated as the influence of high speed stream from coronal hole 16 (CH16) continues. Another high speed stream from coronal hole 17 (CH17) is expected to arrival on Earth on 20 August. Geomagnetic conditions are expected to be unsettled with a chance of active levels.

SYSTEMS AFFECTED: HF communications.



3-Day Predictions

Date2018-08-182018-08-192018-08-20
SSN11
Se (WCI)11
T-Index30 to 105/-530 to 105/-5
Activitylowlow
Qfe3.03.0
Ap5.05.0
Magnetic ConditionsQuietQuiet
SA HF Commsfairfair
SW Fadeoutsunlikelyunlikely
MUFunstableunstable