Daily Forecast

DATE: 25 Sept 2020, composed at 09:00 SAST

CURRENT CONDITIONS: Solar activity is low with background X-ray flux below B-class levels. The solar wind speed is elevated with speeds ranging between 450 - 530 km/s due to the influence of high speed stream from coronal hole 81 (CH81). Geomagnetic conditions are at unsettled to active storm levels. Local HF working frequencies are slightly elevated compared to monthly average predicted values.

EVENTS: None.

OUTLOOK: Solar activity is expected to be low with background X-ray flux below B-class levels. There is one tiny sunspot region visible on the solar disk with weak magnetic field and no flaring activity is expected. The solar wind speed is expected to increase further due to the continued influence from coronal hole 81 (CH81) high speed stream. Geomagnetic conditions are expected to be mostly unsettled to active with a chance of minor storm intervals. Another high speed stream from coronal hole 82 (CH82) is expected to increase the solar wind speed on 28 September.

SYSTEMS AFFECTED: None.



3-Day Predictions

Date2020-09-262020-09-272020-09-28
SSN111
Se (WCI)571
T-Index30 to 105/1330 to 105/130 to 105/2
Activitylowlowlow
Qfe4.97.56.0
Ap12.025.015.0
Magnetic ConditionsUnsettledActive to Minor StormUnsettled to Active
SA HF Commsfairfairfair
SW Fadeoutsunlikelyunlikelyunlikely
MUFunstableunstableunstable