HF Systems
FORECAST SOL: Moderate yellow MAG: Normal green ION: Normal green
HomeHF SystemsAustralasiaHF ConditionsIonospheric Summary and Forecast Saturday, Jun 25 2022 01:08 UT
Australasia

Ionospheric Summary and Forecast

Ionospheric Summary

(last updated 24 Jun 2022 23:30 UT)

Date T index 24 Jun 59 Observed Australian Regional MUFs Cocos Island Region: Enhanced by 50% during local day. Depressed by 15% during local night. Niue Island Region: Mostly near predicted monthly values. Northern Australian Region: Near predicted monthly values during local day. Depressed by 15% during local night. Southern Australian Region: 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 May 79 Jun 57 Jul 59

Ionospheric Forecast

(last updated 24 Jun 2022 23:30 UT)

Date T index MUFs 25 Jun 60 Near predicted monthly values 26 Jun 60 Near predicted monthly values 27 Jun 60 Near predicted monthly values COMMENT: SWS SWF HF Communications Warning 50 was issued on 23 June and is current for 23-25 Jun. Maximum usable frequencies (MUFs) on UT day 24-Jun were mostly near monthly predicted values. Mild ionospheric depressions were observed during local night hours at most sites. Spread-F was observed at Hobart during local night hours. MUFs are expected to be near predicted monthly values over 25-27 Jun, with mild degradations possible during local night hours. There is a chance of shortwave fadeouts.

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