Ionospheric Summary and Forecast

Ionospheric Summary

(last updated 18 Nov 2018 23:50 UT)

Date T index 18 Nov -31 Observed Australian Regional MUFs Cocos Island Region: No data available. Niue Island Region: Depressed by 20% during local day. Depressed by 20% during local night. Northern Australian Region: Mostly near predicted monthly values. Southern Australian Region: Depressed by 15% during local day. Near predicted monthly values during local night. Antarctic Region (Casey/Scott Base/Davis/Mawson): Near predicted monthly values over the UT day. Monthly T index: Month T index Oct -17 Nov -7 Dec -7

Ionospheric Forecast

(last updated 18 Nov 2018 23:50 UT)

Date T index MUFs 19 Nov -35 Depressed 10 to 30%/near predicted monthly values 20 Nov -35 Depressed 10 to 30%/near predicted monthly values 21 Nov -35 Depressed 10 to 30%/near predicted monthly values COMMENT: SWS HF Communications Warning 16 was issued on 16 November and is current for 17-19 Nov. HF conditions for the AUS/NZ region during the last 24 hours saw MUFs depressions ranging between 10%-30% during local day and night for Equatorial regions. Northern AUS and Southern AUS/NZ regions MUFs ranged from minor depressions to near predicted monthly values during local day and night, and Antarctic regions near predicted monthly values over the UT day. Similar levels of depressed ionospheric support expected for the next 3 days with minor to moderate MUF depressions across all latitude bands due to continued very low levels of ionising radiation from the Sun.