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

[Australian Space Weather Forecasting Centre]

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

1. SUMMARY (27 JUNE) 
Date   T index  Conditions    
27 Jun    89    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Enhanced by 30% during local day.
      Near predicted monthly values during local night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Mostly near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
May      67
Jun      68
Jul      65


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

COMMENT: ASWFC SWF HF Communications Warning 57 was issued on 
27 June and is current for 27-28 Jun. Maximum Usable Frequencies 
(MUFs) in the Australian region were near predicted monthly values, 
with some enhancements seen at Niue Island. Spread-F was present 
across most of the Australian region during local night hours, 
including significant spread-F at Hobart. MUFs are forecast to 
continue to be near predicted values over 28-30 Jun. Shortwave 
fadeouts are possible.

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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