Ionospheric Summary and Forecast

Ionospheric Summary

(last updated 05 Dec 2024 23:30 UT)

Date T index 05 Dec 124 Observed Australian Regional MUFs Cocos Island Region: Near predicted monthly values during local day. Depressed by 15% during local night. Depressed by 25% after local dawn. Niue Island Region: Enhanced by 25% during local day. Near predicted monthly values during local night. Northern Australian Region: 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 Nov 127 Dec 117 Jan 114

Ionospheric Forecast

(last updated 05 Dec 2024 23:30 UT)

Date T index MUFs 06 Dec 130 Near predicted monthly values 07 Dec 130 Near predicted monthly values 08 Dec 130 Near predicted monthly values COMMENT: ASWFC SWF HF Communications Warning 141 was issued on 5 December and is current for 5-7 Dec. Maximum usable frequencies (MUFs) in the Australian region on UT day 05-Dec were near predicted monthly values. Sporadic E was observed at several Australian sites during local night hours. MUFs are expected to be near predicted monthly values over 06-08 Dec. Shortwave fadeouts are possible.