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This page last updated 2010/09/03 16:19:36 Cape Town Time = South African Standard Time - SAST = UT+2

CURRENT CONDITIONS: Geomagnetic conditions are at quiet levels. Local HF working frequencies are unstable to slightly depressed from predicted monthly average values.

OUTLOOK: Propagation conditions should be fair, with unstable values from predicted monthly average HF working frequencies.

THREE-DAY PREDICTIONS FOR THE SOUTHERN AFRICAN REGION

Current Sunspot Count: 52 (physical sunspots/area count - no relation to EM emission) - See WCI below for effective SSN for HF frequency prediction purposes.

	04-Sep-10	05-Sep-10	06-Sep-10
SSN	8	4	5
Solar Index (WCI for preds)Se*	8	10	11
T-Index**	-25 to 80/-2	-25 to 75/2	-25 to 75/5
Solar Activity	low	low	low
Q_fe	3.2	4.3	4.4
A_p	5.0	8.0	8.0
Magnetic Conditions	Quiet	Quiet to Unsettled	Quiet to Unsettled
SA HF Comms Conditions	fair	fair	fair
SW Fadeouts	unlikely	unlikely	unlikely
MUFs***	unstable to near pred	unstable to near pred	unstable to near pred

Current T-Index(Hermanus) -	2010/09/03 16:00	SAST is	-16.2
Current T-Index(G/Town) -	2010/09/03 16:00	SAST is	5.7
Current T-Index(L/Vale) -	2010/09/02 07:30	SAST is	10.0
Current T-Index(Madimbo)-	2010/09/02 15:30	SAST is	N/A
Current foF2 (Hermanus) -	2010/09/03 14:00	UT is	6.288 MHz
Current foF2 (G/Town) -	2010/09/03 14:00	UT is	6.750 MHz
Current foF2 (L/vale) -	2010/09/03 05:30	UT is	4.925 MHz
Current foF2 (Madimbo) -	2010/09/03 13:30	UT is	N/A
Current Ap-Index -	2010/09/03 16:18	SAST is	3

Green border - OK, Yellow border - beware, Red border - problems for HF comms.

The Font colours for T-Index and FoF2 values have the following meanings:

Black - information less than 3 hours old at time of web page update - can be used for current activities.

Dark Grey - information between 3 and 6 hours old at time of web page update

Light Grey - Information more than 6 hours old and cannot be used for current activities - for info only

The WCI (Wind Compensated Index), or Se Solar index works well with IONCAP/ICEPAC/VOACAP for near real-time Ionospheric evaluations

**T-indices do not stay fixed on one value for days on end. We therefore provide the ranges of values the T-indices are expected to reach during the course of the days indicated, with an average value that can be used for daily frequency predictions.

***Relative to the published monthly average T-indices

If you are new to space weather, please click here for an introduction to the subject.

New long term T-Indices (1938-2015) have been released (Prepared at 03:01:00 UT on 01 September 2010, updated 01 September 2010 07:10 UT), please get the latest values via a link in the bulletins section, or go straight to the LATEST MONTHLY T-INDICES PAGE to get updates for your ASAPS/WASAPS data bases. A text-only version which can be used to automatically update ASAPS and WASAPS data bases can be downloaded from here.

We have a daily HF frequency predictions page between large centres in Southern Africa, as well as for special links as required. Click here to visit the page.

We have a page containing links to some raw information that could be useful to more advanced users.

Latest Available Ionograms from Hermanus, Grahams Town, Louisvale and Madimbo - courtesy of Rhodes University and Hermanus Magnetic Observatory (HMO)

PST 103 Day Predictions - for daily values see the Bulletins page

Expected T-indices

The next graph summarizes solar conditions for the past 30 days

The following two graphs summarize geomagnetic conditions for the past 30 days

For Those Interested in the Latest Weather (Earthbound)

We have a new page providing (almost) real-time local (Simon's Town) weather here

This should be the latest satellite image available

Remember to refresh the page to get the latest picture!