[Ips-dhfpr] IPS Daily HF Prop Report - 18 June 15 issued 2353 UT on 18 Jun 2015

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 JUNE 2015 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 JUNE) 
Date   T index  Conditions    
18 Jun    80    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.2    0129UT  possible   lower  West Pacific
  M3.0    1739UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Enhanced by 40% during local day.
      Near predicted monthly values during local night.
      Enhanced by 25% after local dawn.
   Niue Island Region:
      Enhanced by 15% during local day.
      Depressed by 35% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 35% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : 10MeV Proton/PCA Event Began 18 06 2015 2105UT and is in progress

Monthly T index:
Month  T index
May      83
Jun      86
Jul      84


2. FORECAST (19 JUNE - 21 JUNE)
Date   T index  Conditions       MUFs                              
19 Jun    86    Normal           Near predicted monthly values
20 Jun    86    Normal           Near predicted monthly values    
21 Jun    65    Fair             Depressed 15%/near predicted 
                                 monthly values   

COMMENT: IPS SWF HF Communications Warning 15 was issued on 18 
June and is current for 18-19 Jun. Mostly normal conditions are 
expected over the next two days with chance of isolated depressions 
at times. Spread-F conditions were observed at some stations 
possibly resulting in intermittent degraded COMMS. Degraded COMMS 
are possible during 21 June with the anticipated increase in 
geomagnetic activity.

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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.

IPS Radio and Space Services        email: asfc at ips.gov.au
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