[Ips-dhfpr] IPS Daily HF Prop Report - 17 October 15 issued 2330 UT on 17 Oct 2015

[Regional Warning Centre]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 OCTOBER 2015 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 OCTOBER) 
Date   T index  Conditions    
17 Oct    33    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
 M1/--    2042UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Northern Australian Region:
      Depressed by 20% during local day.
      Depressed by 20% during local night.
   Southern Australian Region:
      Depressed by 15% during local day.
      Depressed by 15% during local night.
      Depressed by 30% after local dawn.
   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
Sep      35
Oct      70
Nov      68


2. FORECAST (18 OCTOBER - 20 OCTOBER)
Date   T index  Conditions       MUFs                              
18 Oct    30    Normal-fair      Near predicted monthly values/depressed 
                                 5 to 15%
19 Oct    35    Normal-fair      Near predicted monthly values/depressed 
                                 5 to 10%    
20 Oct    35    Normal-fair      Near predicted monthly values/depressed 
                                 5 to 10%   

COMMENT: IPS HF Communications Warning 64 was issued on 15 October 
and is current for 16-18 Oct. Minor to mild MUF depressions and 
degradations in HF conditions were observed in the Aus/NZ regions 
over the last 24 hours. Nearly similar conditions may be expected 
on UT day 18 October due to low levels of ionising radiation. 
Slight relative improvements in HF conditions may be possible 
on 19 and 20 October as the geomagnetic activity is expected 
to remain at Quiet levels on these days.

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

Space Weather Services              email: asfc at ips.gov.au
Bureau of Meteorology
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