[Ips-dhfpr] IPS Daily HF Prop Report - 25 June 15 issued 2352 UT on 25 Jun 2015

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/25 JUNE 2015 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (25 JUNE) 
Date   T index  Conditions    
25 Jun    56    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M7.9    0816UT  probable   lower  Mid East/Indian

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
      Depressed by 20% after local dawn.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Northern Australian Region:
      Depressed by 15% during local day.
      Depressed by 20% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
      Depressed by 25% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

PCA Event : 10MeV Proton/PCA Event Began at 2020UT 21/06, Ended at 0510UT 24/06

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


2. FORECAST (26 JUNE - 28 JUNE)
Date   T index  Conditions       MUFs                              
26 Jun    60    Normal           Depressed 15%/near predicted 
                                 monthly values
27 Jun    40    Fair-poor        20 to 30% below predicted monthly 
                                 values    
28 Jun    40    Fair             20 to 30% below predicted monthly 
                                 values   

COMMENT: Depressed MUFs observed during local day and night for 
the majority of the AUS/NZ region due to recent geomagnetic activity. 
HF conditions are expected to improve over the next 24 hours 
with occasional depressed periods for Northern AUS, Southern 
AUS/NZ regions. Disturbed ionospheric support for high latitudes 
and depressed MUF's of ~25% expected for 27Jun-28Jun to expected 
geomagnetic storm conditions.

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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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