[Ips-dhfpr] IPS Daily HF Prop Report - 27 July 15 issued 2330 UT on 27 Jul 2015

[Regional Warning Centre]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/27 JULY 2015 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (27 JULY) 
Date   T index  Conditions    
27 Jul    55    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 25% during local day.
      Depressed by 25% during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Depressed by 25% during local day.
      Depressed by 20% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 20% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jun      70
Jul      84
Aug      82


2. FORECAST (28 JULY - 30 JULY)
Date   T index  Conditions       MUFs                              
28 Jul    55    Normal-fair      15 to 20% below predicted monthly 
                                 values
29 Jul    45    Normal-fair      20 to 30% below predicted monthly 
                                 values    
30 Jul    55    Normal-fair      15 to 20% below predicted monthly 
                                 values   

COMMENT: IPS HF Communications Warning 27 was issued on 27 July 
and is current for 27-29 Jul. MUF depressions of up to 30% have 
been seen across much of the Australasian region over the last 
24 hours. These conditions are due to low levels of ionising 
solar flux. Expect similar conditions next three days. Expected 
enhancements in geomagnetic activity levels on 29 July may result 
in further depressions in MUFs.

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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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