[Ips-dhfpr] ASWFC Daily HF Prop Report - 20 August 24 issued 2330 UT on 20 Aug 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/20 AUGUST 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (20 AUGUST) 
Date   T index  Conditions    
20 Aug   172    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.0 19/2311UT  possible   lower  West Pacific
  M1.2    0448UT  possible   lower  E. Asia/Aust.
  M1.3    1708UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Enhanced by 25% during local day.
      Enhanced by 80% during local night.
   Niue Island Region:
      Enhanced by 20% during local day and after local dawn.
      Enhanced by 30% during local night.
   Northern Australian Region:
      Enhanced by 15-25% during local day and after local dawn.
      Enhanced by 45% during local night.
   Southern Australian Region:
      Enhanced by 20% during local day and after local dawn.
      Enhanced by 25% during local night.
   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 (21 AUGUST - 23 AUGUST)
Date   T index  Conditions       MUFs                              
21 Aug   170    Normal           15 to 35% above predicted monthly 
                                 values
22 Aug   170    Normal           15 to 35% above predicted monthly 
                                 values    
23 Aug   170    Normal           15 to 35% above predicted monthly 
                                 values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 20-Aug were 15-45% enhanced. Ionospheric scintillation 
was observed at Darwin and Weipa during the interval 20/1110-1523UT. 
MUFs are expected to be 15-35% enhanced over 21-23 Aug. 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