HF Systems
FORECAST SOL: Normal green MAG: Normal green ION: Normal green
HomeHF SystemsGlobal HFHF ConditionsHF Fadeout Warning Tuesday, Jul 28 2026 16:10 UT
Global HF

HF Fadeout Warning

/Images/HF%20Systems/Global%20HF/HF%20Conditions/ico_HFFadeoutWarning.gif

(last updated 28 Jul 2026 16:00 UT)

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 26/69 ISSUED AT 0737UT/27 JULY 2026 BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE. Active Regions 4493 and 4494 have both previously produced M-class flares, with the potential for further flare activity. Shortwave fadeouts are possible. DEGRADED HF PROPAGATION CONDITIONS EXPECTED FROM 27-28 JULY 2026 IF COMMS DIFFICULTIES EXPERIENCED TRY A HIGHER FREQUENCY BAND _____________________________________________________________ SOLAR ACTIVITY FORECAST HF COMMS FADEOUTS 27 Jul: R0-R1 Possible 28 Jul: R0-R1 Possible

go to top of page