Ionospheric Summary and Forecast
Ionospheric Summary
(last updated 01 Jul 2025 23:30 UT)
Date T index 01 Jul 81 Observed Australian Regional MUFs Cocos Island Region: Near predicted monthly values during local day. Depressed by 25% during local night. Depressed by 20% after local dawn. Niue Island Region: Near predicted monthly values during local day. Depressed by 35% during local night. Northern Australian Region: Near predicted monthly values during local day. Depressed by 25% during local night. Depressed by 20% after local dawn. Southern Australian Region: Near predicted monthly values during local day. Depressed by 20% during local night. Antarctic Region (Casey/Davis/Mawson): Depressed by 20% over the UT day. Monthly T index: Month T index Jun 79 Jul 104 Aug 102
Ionospheric Forecast
(last updated 01 Jul 2025 23:30 UT)
Date T index MUFs 02 Jul 80 Near predicted values to 20% depressed 03 Jul 75 Near predicted values to 20% depressed 04 Jul 75 Near predicted values to 20% depressed COMMENT: Maximum usable frequencies (MUFs) in the Australian region on UT day 1-Jul were near predicted values to 20% depressed. Conditions in the northern Australian regions, and also in Canberra, during local nighttime hours were generally degraded. Strong spread-F was observed at Hobart during local nighttime. MUFs are expected to be near predicted values to 20% depressed over 2-4 Jul, initially due to CME activity and then due to coronal hole activity by the end of the period.
