[Ips-dhfpr] ASWFC Daily HF Prop Report - 23 April 25 issued 2331 UT on 23 Apr 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/23 APRIL 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 APRIL) 
Date   T index  Conditions    
23 Apr   121    Fair-normal    

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 20-40%.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian Region:
      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
Mar      126
Apr      115
May      113


2. FORECAST (24 APRIL - 26 APRIL)
Date   T index  Conditions       MUFs                              
24 Apr   115    Fair-normal      Near predicted monthly values
25 Apr   115    Fair-normal      Near predicted monthly values    
26 Apr   115    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 23-Apr were near predicted monthly values. Spread 
F was observed at Hobart and Canberra during local night hours. 
MUFs are expected to be near predicted values over 24-26 Apr. 
Degraded HF conditions may be experienced during local night 
hours for the southern region Australian during 24-25 Apr.

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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