[Ips-dhfpr] ASWFC Daily HF Prop Report - 27 May 26 issued 2330 UT on 27 May 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/27 MAY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (27 MAY) 
Date   T index  Conditions    
27 May    87    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Mostly near predicted monthly values.
      Enhanced by 40% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : 10MeV Proton/PCA Event Began at 0010UT 26/05, Ended at 0400UT 26/05

Monthly T index:
Month  T index
Apr      74
May      71
Jun      68


2. FORECAST (28 MAY - 30 MAY)
Date   T index  Conditions       MUFs                              
28 May    85    Normal           Near predicted monthly values
29 May    75    Normal           Near predicted monthly values    
30 May    75    Normal           Near predicted monthly values   

COMMENT: Maximum Usable Frequencies (MUFs) in the Australian 
region were near predicted monthly values to 20% enhanced on 
UT day 27-May. Spread-F was observed at Hobart during local night 
hours. MUFs are expected to be near predicted monthly values 
over 28-30 May.

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For an explanation of some of the terms in this report, go to
https://www.sws.bom.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

Australian Space Weather Forecasting Centre
Bureau of Meteorology
ASWFC at bom.gov.au
www.bom.gov.au | www.sws.bom.gov.au