[Ips-dhfpr] SWS Daily HF Prop Report - 07 September 17 issued 2349 UT on 07 Sep 2017 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/07 SEPTEMBER 2017 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 SEPTEMBER) 
Date   T index  Conditions    
07 Sep    44    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
  M1.2 06/2339UT  possible   lower  West Pacific
  M2.4    0502UT  possible   lower  E. Asia/Aust.
  M1.5    0954UT  possible   lower  Mid East/Indian
  M7.3    1015UT  probable   lower  European
  X1.4    1436UT  probable   all    South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Enhanced by 35% during local day.
      Enhanced by 15% during local night.
      Enhanced by 25% after local dawn.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
      Enhanced by 40% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
      Enhanced by 25% after local dawn.
   Southern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 55% during local night.
      Enhanced by 40% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      No data available over the UT 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 (08 SEPTEMBER - 10 SEPTEMBER)
Date   T index  Conditions       MUFs                              
08 Sep    30    Normal-fair      Near predicted monthly values
09 Sep   -10    Poor-fair        20 to 30% below predicted monthly 
                                 values    
10 Sep   -10    Poor-fair        20 to 30% below predicted monthly 
                                 values   

COMMENT: SWS SWF HF Communications Warning 38 was issued on 7 
September and is current for 7-9 Sep. SWS HF Communications Warning 
39 was issued on 7 September and is current for 8-10 Sep. Maximum 
usable frequencies (MUFs) were near predicted monthly values 
to enhanced in the Aus/NZ region over the last 24 hours. Expect 
near predicted monthly values to enhanced in the Aus/NZ region 
today, 08 September, followed by MUF depressions on 09-10 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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