[Ips-dhfpr] IPS Daily HF Prop Report - 18 August 12 issued 2332 UT on 18 Aug 2012

rwc rwc at ips.gov.au
Sun Aug 19 09:32:32 EST 2012


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 AUGUST 2012 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 AUGUST) 
Date   T index  Conditions    
18 Aug    59    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M5.5    0102UT  possible   lower  West Pacific
  M1.9    0323UT  possible   lower  E. Asia/Aust.
  M2.0    1607UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Depressed by 30% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 35% during local night.
   Northern Australian Region:
      Depressed by 15% during local day.
      Depressed by 20% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Predicted Monthly T index for August:  77


2. FORECAST (19 AUGUST - 21 AUGUST)
Date   T index  Conditions       MUFs                              
19 Aug    55    Normal           Depressed 15%/near predicted 
                                 monthly values
20 Aug    60    Normal           Near predicted monthly values    
21 Aug    70    Normal           Near predicted monthly values   

COMMENT: IPS HF Communications Warning 30 was issued on 17 August 
and is current for 18-20 Aug (SWFs). Over the last 24 hours, 
nighttime MUFs were depressed over the Australian region. Similar 
conditions are expected for 19-Aug, with a return to near monthly 
predicted MUFs during 20-21 Aug.

----------------------------------------------------------
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.

IPS Radio and Space Services        email: asfc at ips.gov.au
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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