Ionospheric Summary and Forecast

Ionospheric Summary

(last updated 15 Jul 2024 23:30 UT)

Date T index 15 Jul 127 Observed Australian Regional MUFs Cocos Island Region: Enhanced by 50% during local day. Enhanced by 50% during local night. Niue Island Region: Near predicted monthly values. Northern Australian Region: Mostly near predicted monthly values. Southern Australian Region: Mostly near predicted monthly values. Antarctic Region (Casey/Davis/Mawson): Enhanced by 25% over the UT day. Monthly T index: Month T index Jun 120 Jul 118 Aug 117

Ionospheric Forecast

(last updated 15 Jul 2024 23:30 UT)

Date T index MUFs 16 Jul 125 Near predicted monthly values 17 Jul 125 Near predicted monthly values 18 Jul 125 Near predicted monthly values COMMENT: ASWFC SWF HF Communications Warning 74 was issued on 13 July and is current for 14-16 Jul. Maximum usable frequencies (MUFs) on UT day 15-Jul were mostly near predicted values in the Australian region. Sporadic-E was observed in Norfolk Island and Brisbane during local night hours. Spread-F was observed in Niue during local night hours. MUFs are expected to be near predicted values over 16-18 Jul. Shortwave fadeouts are possible.