[Ips-dhfpr] IPS Daily HF Prop Report - 23 June 14 issued 2345 UT on 23 Jun 2014

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/23 JUNE 2014 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 JUNE) 
Date   T index  Conditions    
23 Jun    45    Fair-normal    

Flares: none.

MUFs:
   Cocos Island Region:
      No data available. 
   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 45% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 25% during local day.
      Depressed by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 25% depressed.

PCA Event : No event.

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


2. FORECAST (24 JUNE - 26 JUNE)
Date   T index  Conditions       MUFs                              
24 Jun    45    Fair-normal      20 to 30% below predicted monthly 
                                 values
25 Jun    55    Fair-normal      20 to 30% below predicted monthly 
                                 values    
26 Jun    60    Normal-fair      Near predicted monthly values/depressed 
                                 15 to 20%   

COMMENT: IPS HF Communications Warning 31 was issued on 22 June 
and is current for 23-25 Jun. Depressions up to 45% observed 
in the Australian region due to declining EUV levels resulting 
from a decrease in active regions on the Sun. There was strong 
Spread-F in Darwin ionograms last night. Expect similar conditions 
next 24 hours with ionospheric support weakening due to low solar 
10.7cm irradiance and possible 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.

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