Ionospheric Summary and Forecast

Ionospheric Summary

(last updated 04 Dec 2022 23:30 UT)

Date T index 04 Dec 86 Observed Australian Regional MUFs Cocos Island Region: Enhanced by 15% during local day. Enhanced by 40% during local night. Niue Island Region: Near predicted monthly values during local day. Enhanced by 15% during local night. Northern Australian Region: Near predicted monthly values during local day. Enhanced by 15% during local night. Southern Australian Region: Mostly near predicted monthly values. Antarctic Region (Casey/Scott Base/Davis/Mawson): Near predicted monthly values over the UT day. Monthly T index: Month T index Nov 77 Dec 70 Jan 70

Ionospheric Forecast

(last updated 04 Dec 2022 23:30 UT)

Date T index MUFs 05 Dec 80 Near predicted monthly values 06 Dec 80 Near predicted monthly values 07 Dec 70 Near predicted monthly values COMMENT: Maximum usable frequencies (MUFs) in the northern Australian region on UT day 4-Dec were near predicted monthly values to 15% enhanced and near predicted monthly values in the southern Australian region. Significant amounts of sporadic E were observed across the Australian region during local night. MUFs are expected to be near predicted monthly values over 5-7 Dec, with a chance of mild depressions on 6-Dec due to coronal hole high speed wind streams effects and a a chance of mild depressions on 7-Dec due to a combination of coronal hole high speed wind stream effects and a possible glancing blow from a CME first observed on 4-Dec. Further significant sporadic E can be expected across the Australian region, particularly during local night.