[Ips-dhfpr] ASWFC Daily HF Prop Report - 08 August 24 issued 2330 UT on 08 Aug 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/08 AUGUST 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (08 AUGUST) 
Date   T index  Conditions    
08 Aug   156    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M2.1    0106UT  possible   lower  West Pacific
  M1.3    0435UT  possible   lower  E. Asia/Aust.
  M1.6    1142UT  possible   lower  European
  M1.5    1343UT  possible   lower  European
  X1.3    1935UT  probable   all    East Pacific/
                                    North American
  M1.2    2251UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Enhanced by 15% during local day.
      Enhanced by 65% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 55% during local night.
   Southern Australian Region:
      Enhanced by 15-25%.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jul      131
Aug      119
Sep      119


2. FORECAST (09 AUGUST - 11 AUGUST)
Date   T index  Conditions       MUFs                              
09 Aug   140    Normal-fair      Near predicted monthly values 
                                 to 15-20% enhanced
10 Aug   140    Normal-fair      Near predicted monthly values 
                                 to 15-20% enhanced    
11 Aug   100    Normal-fair      Depressed 10 to 15%/near predicted 
                                 monthly values   

COMMENT: ASWFC Preliminary HF Communications Warning 87 was issued 
on 7 August and is current for 10-11 Aug. Maximum usable frequencies 
(MUFs) in the Australian region on 08-Aug were near predicted 
values to 55% enhanced. Very strong enhancements were observed 
during local night hours in the northern Australian region. MUFs 
are expected to be near predicted values to 15-20% enhanced over 
09-10 Aug. Degraded conditions are expected for local night hours 
on 10-Aug due to an anticipated increase in geomagnetic activity. 
Southern Australian region MUFs may become 15% depressed on 11-Aug 
if geomagnetic activity eventuates.

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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