[Ips-dhfpr] ASWFC Daily HF Prop Report - 24 October 24 issued 2331 UT on 24 Oct 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/24 OCTOBER 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (24 OCTOBER) 
Date   T index  Conditions    
24 Oct   139    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  X3.3    0357UT  probable   all    E. Asia/Aust.
  M1.2    1030UT  possible   lower  European

MUFs:
   Cocos Island Region:
      Enhanced by 25% during local day.
      Enhanced by 35% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   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
Sep      147
Oct      116
Nov      115


2. FORECAST (25 OCTOBER - 27 OCTOBER)
Date   T index  Conditions       MUFs                              
25 Oct   145    Normal           Near predicted monthly values 
                                 to 20% enhanced
26 Oct   110    Fair             Near predicted monthly values 
                                 to 10-15% depressed    
27 Oct   100    Normal-fair      Near predicted monthly values 
                                 to 10-15% depressed   

COMMENT: ASWFC SWF HF Communications Warning 120 was issued on 
24 October and is current for 24-25 Oct. ASWFC Preliminary HF 
Communications Warning 121 was issued on 24 October and is current 
for 26-27 Oct. Maximum usable frequencies (MUFs) in the Australian 
region on UT day 24-Oct were near predicted values to 15% enhanced. 
MUFs are expected to be near predicted values to 20% enhanced 
on 25-Oct. MUFs may become 10-15% depressed over 26-27 Oct due 
to anticipated geomagnetic activity. Spread-F and sporadic-E 
may be common during this period.

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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