Ionospheric Summary and Forecast
Ionospheric Summary
(last updated 25 Mar 2025 23:30 UT)
Date T index 25 Mar 130 Observed Australian Regional MUFs Cocos Island Region: No data available during local day. No data available during local night. Enhanced by 50% after local dawn. Niue Island Region: Enhanced by 15% during local day. Enhanced by 35% during local night. Enhanced by 20% after local dawn. Northern Australian Region: Mostly near predicted monthly values. Southern Australian Region: Mostly near predicted monthly values. Antarctic Region (Casey/Davis/Mawson): Depressed by 30% over the UT day. Monthly T index: Month T index Feb 127 Mar 117 Apr 114
Ionospheric Forecast
(last updated 25 Mar 2025 23:30 UT)
Date T index MUFs 26 Mar 115 Near predicted monthly values to 10-15% depressed 27 Mar 110 Near predicted monthly values to 10-15% depressed 28 Mar 105 Near predicted monthly values to 10-20% depressed COMMENT: Maximum usable frequencies (MUFs) in the Australian region on UT day 25-Mar were near predicted values. Persistent sporadic-E was observed in all low latitudes stations during local night hours. Spread-F was observed in Hobart. MUFs are expected to be mostly near predicted monthly values on UT day 26-Mar, with mild depressions setting in possibly late in the day. Depressions are expected to deepen over 27-28 Mar. Spread-F is possible at high latitudes during local night hours.
