[Ips-dhfpr] SWS Daily HF Prop Report - 04 August 22 issued 2330 UT on 04 Aug 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/04 AUGUST 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (04 AUGUST) 
Date   T index  Conditions    
04 Aug    46    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 45% during local night.
      Depressed by 20% after local dawn.
   Niue Island Region:
      Depressed by 15% during local day.
      Depressed by 35% during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

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


2. FORECAST (05 AUGUST - 07 AUGUST)
Date   T index  Conditions       MUFs                              
05 Aug    45    Normal           Depressed 15%/near predicted 
                                 monthly values
06 Aug    45    Normal           Depressed 15%/near predicted 
                                 monthly values    
07 Aug    45    Normal           Depressed 15%/near predicted 
                                 monthly values   

COMMENT: SWS SWF HF Communications Warning 57 was issued on 3 
August and is current for 3-5 Aug. Maximum usable frequencies 
(MUFs) on UT day 04-Aug were mostly near predicted monthly values 
to 20% depressed at most northern Australian sites. Spread-F 
was observed at Brisbane, Learmonth and Perth. Sporadic E was 
observed at Perth. MUFs are expected to be near predicted monthly 
values to 15% depressed in the northern Australian region over 
05-07 Aug. Isolated 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