[Ips-dhfpr] SWS Daily HF Prop Report - 18 August 20 issued 2331 UT on 18 Aug 2020

Regional Warning Centre rwc at ips.gov.au
Wed Aug 19 09:31:31 EST 2020


SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 AUGUST 2020 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 AUGUST) 
Date   T index  Conditions    
18 Aug    -3    Fair-normal    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      No data available.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
      Enhanced by 25% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 25% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jul      -1
Aug      -13
Sep      -14


2. FORECAST (19 AUGUST - 21 AUGUST)
Date   T index  Conditions       MUFs                              
19 Aug     0    Normal           Near to 15% above predicted 
                                 monthly values
20 Aug     0    Normal-fair      Near to 15% above predicted 
                                 monthly values    
21 Aug     0    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: MUFs in the Australian and Antarctic regions were near 
predicted monthly values to mildly enhanced on UT day 18 August. 
Weak ionosphere at Darwin 18-20 UT. Spread F observed during 
night hours at Darwin, Learmonth, Brisbane, Norfolk Is. Evening 
sporadic E observed at Learmonth and pre-dawn at Sydney, Canberra 
and Norfolk Is. MUFs in the Australian region are expected to 
be near predicted monthly values to mildly enhanced 19 to 21 
August.

----------------------------------------------------------
For an explanation of some of the terms in this report, go to
http://www.sws.bom.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

Space Weather Services              email: asfc at bom.gov.au
Bureau of Meteorology
PO Box 1386                         WWW: http://www.sws.bom.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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