[Ips-dhfpr] ASWFC Daily HF Prop Report - 16 August 22 issued 2330 UT on 16 Aug 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/16 AUGUST 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (16 AUGUST) 
Date   T index  Conditions    
16 Aug    60    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M5.1    0758UT  possible   lower  Mid East/Indian
  M1.9    2121UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 35% during local night.
   Niue Island Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      Mostly near predicted monthly values.
      Depressed by 20% after local dawn.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 20% over the UT day.

PCA Event : No event.

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


2. FORECAST (17 AUGUST - 19 AUGUST)
Date   T index  Conditions       MUFs                              
17 Aug    65    Fair             Near predicted monthly values
18 Aug    55    Fair             Depressed 15%/near predicted 
                                 monthly values    
19 Aug    55    Normal-fair      Depressed 15%/near predicted 
                                 monthly values   

COMMENT: SWS SWF HF Communications Warning 59 was issued on 14 
August and is current for 15-17 Aug. Maximum usable frequencies 
(MUFs) on UT day 16-Aug were mostly near predicted monthly values. 
Spread-F was observed at several Australian sites. MUFs are expected 
to be mostly near predicted monthly values on 17-Aug. Mild depressions 
are possible for the southern Australian region over 18-19 Aug 
due to the combined effects of a coronal hole high speed wind 
stream and the impact of three CMEs first observed on 13-Aug, 
14-Aug and 15-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