[Ips-dhfpr] ASWFC Daily HF Prop Report - 08 April 25 issued 2330 UT on 08 Apr 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/08 APRIL 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (08 APRIL) 
Date   T index  Conditions    
08 Apr   124    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.5    2222UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Enhanced by 20% during local day.
      Enhanced by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 20% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Mar      126
Apr      115
May      113


2. FORECAST (09 APRIL - 11 APRIL)
Date   T index  Conditions       MUFs                              
09 Apr   125    Normal-fair      Near predicted monthly values 
                                 to 15% depressed
10 Apr   120    Normal           Near predicted monthly values 
                                 to 15% depressed    
11 Apr   115    Normal           Near predicted monthly values 
                                 to 15% depressed   

COMMENT: ASWFC SWF HF Communications Warning 35 was issued on 
8 April and is current for 9-10 Apr. Maximum usable frequencies 
(MUFs) in the Australian region on UT day 8-Apr were near predicted 
values. Spread-F was observed in Perth during local pre-dawn 
hours. MUFs are expected to be near predicted values 15% depressed 
over 9-11 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