[Ips-dhfpr] ASWFC Daily HF Prop Report - 25 August 22 issued 2330 UT on 25 Aug 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/25 AUGUST 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (25 AUGUST) 
Date   T index  Conditions    
25 Aug    45    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.8    1951UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Enhanced by 30% during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Depressed by 15% during local day.
      Depressed by 25% during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Depressed by 15% during local day.
      Depressed by 20% during local night.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jul      65
Aug      67
Sep      68


2. FORECAST (26 AUGUST - 28 AUGUST)
Date   T index  Conditions       MUFs                              
26 Aug    50    Normal           Near predicted monthly values 
                                 to 15% depressed
27 Aug    55    Normal           Near predicted monthly values    
28 Aug    60    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 25-Aug were 
near predicted monthly values to 20% depressed during local night 
hours. Spread-F was observed at Brisbane and Townsville during 
local night hours. Sporadic E was observed at the Cocos Islands 
and northern Australian regions. Regional MUFs are expected to 
be mostly near predicted monthly values to 15% depressed on 26-Aug 
and mostly near predicted monthly values over 27-28 Aug.

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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