[Ips-dhfpr] ASWFC Daily HF Prop Report - 15 August 22 issued 2331 UT on 15 Aug 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/15 AUGUST 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (15 AUGUST) 
Date   T index  Conditions    
15 Aug    60    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.0    1436UT  possible   lower  South American/
                                    Atlantic
  M2.7    1654UT  possible   lower  South American/
                                    Atlantic
  M1.2    2153UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Depressed by 35% during local night.
   Niue Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values.
   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 (16 AUGUST - 18 AUGUST)
Date   T index  Conditions       MUFs                              
16 Aug    65    Normal           Near predicted monthly values
17 Aug    50    Fair             Depressed 15%/near predicted 
                                 monthly values    
18 Aug    55    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 15-Aug were mostly near predicted monthly values. 
Spread-F was observed at Hobart and Townsville. MUFs are expected 
to be mostly near predicted monthly values on 16-Aug. Mild depressions 
are possible for the southern Australian region from 17-Aug due 
to the combined effects of a coronal hole high speed wind stream 
and the expected arrival 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