[Ips-dhfpr] ASWFC Daily HF Prop Report - 12 January 25 issued 2330 UT on 12 Jan 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/12 JANUARY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (12 JANUARY) 
Date   T index  Conditions    
12 Jan   153    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 25-50%.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Darwin enhanced by 20-70% during local night.
   Southern Australian Region:
      Near predicted monthly values.
      Perth enhanced by 15-20%.
   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 (13 JANUARY - 15 JANUARY)
Date   T index  Conditions       MUFs                              
13 Jan   140    Normal-fair      Near predicted monthly values 
                                 to 15% enhanced.
14 Jan   140    Fair             Near predicted monthly values 
                                 to 15% enhanced.    
15 Jan   140    Fair-normal      Near predicted monthly values 
                                 to 15% enhanced.   

COMMENT: Maximum usable frequencies (MUFs) on UT day 12-Jan in 
the Australian region were near predicted monthly values to 70% 
enhanced. Darwin MUFs were enhanced by up to 70% during local 
night hours. Spread F was observed at Hobart during local night 
hours. Sporadic E was observed at some sites mostly during the 
local day. MUFs are expected to be near predicted monthly values 
to 15% enhanced over 13-15 Jan. Mildly degraded conditions may 
be experienced during local night hours for the southern Australian 
region on 14-Jan. Isolated minor 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