[Ips-dhfpr] IPS Daily HF Prop Report - 23 June 15 issued 2352 UT on 23 Jun 2015

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SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/23 JUNE 2015 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    69    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Depressed by 30% during local night.
      Depressed by 30% after local dawn.
   Niue Island Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian and New Zealand Region:
      Depressed by 25% during local day.
      Depressed by 25% during local night.
      Depressed by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 30% over the UT day.
      Proton event in progress, increased absorption observed.

PCA Event : 10MeV Proton/PCA Event Began 22 06 2015 0620UT and is in progress

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


2. FORECAST (24 JUNE - 26 JUNE)
Date   T index  Conditions       MUFs                              
24 Jun    55    Fair             15 to 20% below predicted monthly 
                                 values
25 Jun    45    Fair-poor        20 to 30% below predicted monthly 
                                 values    
26 Jun    55    Fair             15 to 20% below predicted monthly 
                                 values   

COMMENT: IPS HF Communications Warning 20 was issued on 23 June 
and is current for 23-25 Jun. Degraded HF conditions observed 
over the last 24 hours due to recent CME activity resulting in 
storm level geomagnetic conditions and a polar cap absorption 
event which is currently in progress. Depressed MUF's of 20%-30% 
expected for low to mid latitude station over the next 3 days 
hours. Poor ionospheric support expected for high latitudes over 
the next 3 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.

IPS Radio and Space Services        email: asfc at ips.gov.au
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