[Ips-dhfpr] IPS Daily HF Prop Report - 31 July 15 issued 2330 UT on 31 Jul 2015

[Regional Warning Centre]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/31 JULY 2015 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (31 JULY) 
Date   T index  Conditions    
31 Jul    58    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Depressed by 15% during local day.
      Depressed by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 25% 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 : No event.

Monthly T index:
Month  T index
Jun      70
Jul      71
Aug      80


2. FORECAST (01 AUGUST - 03 AUGUST)
Date   T index  Conditions       MUFs                              
01 Aug    53    Normal-fair      15 to 35% below predicted monthly 
                                 values
02 Aug    56    Normal-fair      15 to 25% below predicted monthly 
                                 values    
03 Aug    58    Normal-fair      5 to 20% below predicted monthly 
                                 values   

COMMENT: IPS HF Communications Warning 28 was issued on 30 July 
and is current for 30 Jul to 1 Aug. MUF depressions of up to 
25% have been seen across the Australasian region over the last 
24 hours. These conditions are due to low levels of ionising 
solar flux. Minor to moderate MUF depressions and degradations 
in HF conditions may be expected on 1 and 2 August due to expected 
mild rise in geomagnetic activity and continued low levels of 
ionising radiation on these days.

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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.

Space Weather Services              email: asfc at ips.gov.au
Bureau of Meteorology
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