Daily Forecast

DATE: 16 Apr 2021, composed at 08:40 SAST

CURRENT CONDITIONS: Solar activity is low with background X-ray flux below B-class levels. The solar wind speed is slightly elevated to background levels with speeds ranging between 330 - 430 km/s. Geomagnetic conditions are at quiet to unsettled 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 currently one active region (AR2814) visible on the solar disk with simple magnetic configuration and minor flaring activity is possible. The solar wind speed is expected increase later today or early tomorrow (16 to 17 April), when the high speed stream from coronal hole 45 (CH45) is expected to impact Earth. Geomagnetic conditions are then expected to be at unsettled to active levels with a chance of minor storm intervals.

SYSTEMS AFFECTED: None.



3-Day Predictions

Date2021-04-172021-04-182021-04-19
SSN111
Se (WCI)744
T-Index30 to 105/1030 to 105/930 to 105/10
Activitylowlowlow
Qfe6.45.95.2
Ap20.016.012.0
Magnetic ConditionsActiveUnsettled to ActiveUnsettled
SA HF Commsfairfairfair
SW Fadeoutsunlikelyunlikelyunlikely
MUFunstableunstableunstable