[Ips-dhfpr] ASWFC Daily HF Prop Report - 22 January 25 issued 2330 UT on 22 Jan 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/22 JANUARY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (22 JANUARY) 
Date   T index  Conditions    
22 Jan   109    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.3    1109UT  possible   lower  European

MUFs:
   Cocos Island Region:
      Mostly near predicted monthly values.
   Niue Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      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
Dec      132
Jan      119
Feb      116


2. FORECAST (23 JANUARY - 25 JANUARY)
Date   T index  Conditions       MUFs                              
23 Jan   115    Normal           Near predicted monthly values
24 Jan   110    Normal-fair      Near predicted monthly values 
                                 to 10% depressed    
25 Jan   100    Normal-fair      Near predicted monthly values 
                                 to 15% depressed   

COMMENT: ASWFC SWF HF Communications Warning 11 was issued on 
21 January and is current for 21-23 Jan. Maximum usable frequencies 
(MUFs) in the Australian region were near predicted values on 
UT day 22-Jan. Sporadic-E was observed in Townsville during local 
night hours. MUFs are expected to be near predicted values on 
23-Jan. MUFs are expected to be near predicted values to 10-15% 
depressed over 24-25 Jan due to expected geomagnetic activity.

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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