Ionospheric Summary and Forecast

Ionospheric Summary

(last updated 21 Feb 2025 23:30 UT)

Date T index 21 Feb 154 Observed Australian Regional MUFs Cocos Island Region: Mostly near predicted monthly values. Niue Island Region: Enhanced by 30% during local day. Enhanced by 35% during local night. Northern Australian Region: Near predicted monthly values during local day. Enhanced by 25% during local night. Southern Australian Region: Near predicted monthly values. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. Monthly T index: Month T index Jan 124 Feb 118 Mar 115

Ionospheric Forecast

(last updated 21 Feb 2025 23:30 UT)

Date T index MUFs 22 Feb 150 Near to 15% above predicted monthly values 23 Feb 150 Near to 15% above predicted monthly values 24 Feb 150 Near to 15% above predicted monthly values COMMENT: Maximum usable frequencies (MUFs) on UT day 21-Feb in the Australian region were near predicted monthly values, with enhancements of up to 25% observed in the northern Australian region. Mild spread F was observed during local night hours at Hobart. MUFs are expected to be near predicted monthly values to 15% enhanced over 22-24 Feb.