[Ips-dhfpr] IPS Daily HF Prop Report - 26 June 15 issued 2338 UT on 26 Jun 2015

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/26 JUNE 2015 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (26 JUNE) 
Date   T index  Conditions    
26 Jun    46    Fair-poor      

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
      Depressed by 20% after local dawn.
   Niue Island Region:
      Depressed by 15% during local day.
      Depressed by 30% during local night.
   Northern Australian Region:
      Depressed by 15% during local day.
      Depressed by 35% during local night.
      Depressed by 25% after local dawn.
   Southern Australian and New Zealand Region:
      Depressed by 20% during local day.
      Depressed by 25% during local night.
   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 at 0130UT 26/06, Ended at 0240UT 26/06
 and, 10MeV Proton/PCA Event Began 26 06 2015 1425UT and is in progress

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


2. FORECAST (27 JUNE - 29 JUNE)
Date   T index  Conditions       MUFs                              
27 Jun    45    Fair             20 to 30% below predicted monthly 
                                 values
28 Jun    40    Fair             20 to 30% below predicted monthly 
                                 values    
29 Jun    50    Normal-fair      15 to 20% below predicted monthly 
                                 values   

COMMENT: IPS Preliminary HF Communications Warning 21 was issued 
on 26 June and is current for 26-27 Jun. Significantly degraded 
HF conditions were observed during 26 June as the effects of 
recent increased geomagnetic activity levels persist. Degraded 
conditions are expected to persist for 27 June and then decline 
further with the anticipated elevation of geomagnetic activity 
later in the UT day. Degraded conditions are expected to continue 
into 28 June. Conditions at high latitudes are further degraded 
by the polar cap absorption event that is presently in progress 
and anticipated to continue for 24 hours.

----------------------------------------------------------
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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