[Ips-dhfpr] IPS Daily HF Prop Report - 27 June 14 issued 2330 UT on 27 Jun 2014

[Regional Warning Centre]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/27 JUNE 2014 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (27 JUNE) 
Date   T index  Conditions    
27 Jun    45    Fair-normal    

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 15% during local day.
      Depressed by 35% during local night.
   Niue Island Region:
      Depressed by 25% during local day.
      Depressed by 35% during local night.
   Northern Australian Region:
      Depressed by 25% during local day.
      Depressed by 40% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 25% 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.

Monthly T index:
Month  T index
May      80
Jun      92
Jul      91


2. FORECAST (28 JUNE - 30 JUNE)
Date   T index  Conditions       MUFs                              
28 Jun    40    Fair-normal      20 to 30% below predicted monthly 
                                 values
29 Jun    40    Fair-normal      20 to 30% below predicted monthly 
                                 values    
30 Jun    60    Normal-fair      15 to 20% below predicted monthly 
                                 values   

COMMENT: IPS HF Communications Warning 32 was issued on 25 June 
and is current for 26-28 Jun. Variable depressions observed in 
the Australian region due to declining EUV levels related to 
a low number of active regions on the Sun. There should be Unsettled 
geomagnetic activity due to high solar wind speed from a coronal 
hole, with possible peak Active (depending on Interplanetary 
Magnetic field north-south orientation) from late on 28 June, 
probably causing MUF depressions up to 40% for 28-29 June. Slight 
improvement in HF conditions possible on 30 June.

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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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