[Ips-dhfpr] SWS Daily HF Prop Report - 05 September 17 issued 2345 UT on 05 Sep 2017 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/05 SEPTEMBER 2017 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (05 SEPTEMBER) 
Date   T index  Conditions    
05 Sep    35    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  C9.0 04/2246UT  probable   lower  East Pacific/
                                    North American
  C9.0    0037UT  probable   lower  West Pacific
  M4.2    0108UT  possible   lower  West Pacific
  C9.0    0354UT  probable   lower  E. Asia/Aust.
  M3.1    0455UT  possible   lower  E. Asia/Aust.
  M3.8    0640UT  possible   lower  Mid East/Indian
  M2.2    1744UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Enhanced by 40% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   Northern Australian Region:
      Enhanced by 25% during local day.
      Enhanced by 20% during local night.
   Southern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 20% during local night.
      Enhanced by 30% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values during local day.
      Proton event in progress, increased absorption observed.

PCA Event : 10MeV Proton/PCA Event Began 05 09 2017 1020UT and is in progress

Monthly T index:
Month  T index
Aug      10
Sep      5
Oct      4


2. FORECAST (06 SEPTEMBER - 08 SEPTEMBER)
Date   T index  Conditions       MUFs                              
06 Sep    30    Normal           Near to 15% above predicted 
                                 monthly values
07 Sep    20    Normal-fair      Near predicted monthly values    
08 Sep     5    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 20%   

COMMENT: SWS SWF HF Communications Warning 36 was issued on 5 
September and is current for 5-6 Sep. Maximum usable frequencies 
(MUFs) were near predicted monthly values to enhanced in the 
Aus/NZ region over the last 24 hours. Isolated periods of sporadic 
E were observed in some locations. The outlook for today (6 September) 
is for a predicted monthly values to enhanced MUFs followed by 
storm-associated depressions on the subsequent days, possibly 
beginning from 07 September.

----------------------------------------------------------
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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