Ionospheric Summary and Forecast

Ionospheric Summary

(last updated 16 Nov 2025 23:31 UT)

Date T index 16 Nov 110 Observed Australian Regional MUFs Cocos Island Region: Near predicted monthly values. Niue Island Region: Enhanced by 15% during local day. Enhanced by 15% during local night. Northern Australian Region: Mostly near predicted monthly values. 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 Oct 104 Nov 89 Dec 90

Ionospheric Forecast

(last updated 16 Nov 2025 23:31 UT)

Date T index MUFs 17 Nov 110 Near to 15% above predicted monthly values 18 Nov 110 Near to 15% above predicted monthly values 19 Nov 105 Near to 15% above predicted monthly values COMMENT: Maximum usable frequencies (MUFs) were largely near predicted monthly values in the Australian region, with some enhancements seen at Niue Island. Spread-F was observed during local night hours in Hobart and the Antarctic region. MUFs are expected to be near predicted monthly values to enhanced by 15% over the period 17-19 Nov. Minor shortwave fadeouts are possible.