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This page last updated 2010/02/08 18:19:56 Cape Town Time = South African Standard Time - SAST = UT+2 CURRENT CONDITIONS: Four M-class flares and some C-class flares have been detected. Geomagnetic conditions are at quiet levels. Local HF working frequencies are unstable to near predicted monthly average values. OUTLOOK: Propagation conditions should be fair, with unstable to elevated values from predicted monthly average HF working frequencies during local mornings, becoming depressed during local afternoons. Expect some fading due to flare activity. THREE-DAY PREDICTIONS FOR THE SOUTHERN AFRICAN REGION Current Sunspot Count: 51 (physical sunspots/area count - no relation to EM emission) - See WCI below for effective SSN for HF frequency prediction purposes.
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 *PST's WCI (Wind Compensated Index) 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 08:26:50 on Mon 04 Jan 2010 Aus (Syd), updated 04 Jan 2010 09:52:12 (SAST), 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. Any HF (shortwave) frequency usage reports are welcome and can be sent here. Please include the receiver position, transmitter position, frequency used, normal link quality, current link quality. 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
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Latest Available Information
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