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

[Australian Space Weather Forecasting Centre]

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

1. SUMMARY (29 JANUARY) 
Date   T index  Conditions    
29 Jan   133    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.0    0408UT  possible   lower  E. Asia/Aust.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values to 15% enhanced.
   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
Dec      132
Jan      119
Feb      116


2. FORECAST (30 JANUARY - 01 FEBRUARY)
Date   T index  Conditions       MUFs                              
30 Jan   140    Normal           Near predicted monthly values 
                                 to 15% enhanced
31 Jan   140    Normal-fair      Near predicted monthly values 
                                 to 15% enhanced    
01 Feb   100    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 15%   

COMMENT: ASWFC SWF HF Communications Warning 13 was issued on 
29 January and is current for 29-30 Jan. Maximum usable frequencies 
(MUFs) in the Australian region were near predicted values to 
15% enhanced on UT day 29-Jan. Mild spread-F was observed at 
Hobart during local night hours. Hobart MUFs were 15% depressed 
early in the UT day then recovered. A brief minor shortwave fadeout 
was observed 29/0404-0411UT. MUFs are expected to be near predicted 
values to 15% enhanced for 30-31 Jan. A mild increase in geomagnetic 
activity is expected from late 31-Jan and southern Australian 
region MUFs may become mildly depressed by the end of 01-Feb. 
Isolated minor 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