Ionospheric Summary and Forecast

Ionospheric Summary

(last updated 24 Apr 2024 23:30 UT)

Date T index 24 Apr 147 Observed Australian Regional MUFs Cocos Island Region: Enhanced by 15% during local day. Enhanced by 55% during local night. Niue Island Region: Enhanced by 20% during local day. Enhanced by 70% during local night. Northern Australian Region: Near predicted monthly values during local day. Enhanced by 25% during local night. Southern Australian Region: Enhanced by 15% during local day. Enhanced by 15% during local night. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. Monthly T index: Month T index Mar 120 Apr 114 May 115

Ionospheric Forecast

(last updated 24 Apr 2024 23:30 UT)

Date T index MUFs 25 Apr 140 Near predicted monthly values 26 Apr 135 Near predicted monthly values 27 Apr 130 Near predicted monthly values COMMENT: Maximum usable frequencies (MUFs) in the Australian region were near predicted values to 25% enhanced on UT day 24-Apr. Spread F was observed in Hobart and Perth during local night and dawn hours. Scintillation was observed at Darwin, Weipa and Niue between 24/0911-1350 UT. MUFs are expected to be near monthly predicted values over 25-27 Apr, although some mild depressions may be observed due to the oncoming coronal hole wind stream over this period.