[Ips-dhfpr] ASWFC Daily HF Prop Report - 29 May 25 issued 2330 UT on 29 May 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/29 MAY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (29 MAY) 
Date   T index  Conditions    
29 May    96    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 30% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Apr      123
May      113
Jun      111


2. FORECAST (30 MAY - 01 JUNE)
Date   T index  Conditions       MUFs                              
30 May    95    Normal-fair      Near predicted monthly values
31 May    95    Normal-fair      Near predicted monthly values    
01 Jun    95    Normal           Near predicted monthly values   

COMMENT: ASWFC HF Communications Warning 54 was issued on 28 
May and is current for 28-30 May. ASWFC SWF HF Communications 
Warning 55 was issued on 28 May and is current for 28-30 May. 
Maximum usable frequencies (MUFs) in the Australian region on 
UT day 29-May were near predicted monthly values to 15-20% depressed. 
Spread F was observed at Hobart during local night hours. MUFs 
are expected to be near predicted monthly values over 30-May 
to 01-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