[Ips-dhfpr] IPS Daily HF Prop Report - 17 June 14 issued 2330 UT on 17 Jun 2014

Regional Warning Centre rwc at ips.gov.au
Wed Jun 18 09:30:26 EST 2014


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 JUNE 2014 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 JUNE) 
Date   T index  Conditions    
17 Jun    74    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values to 15% depressed
      00-13, 22 UT. Depressed 20-40% at other times.
   Niue Island Region:
      Near predicted monthly values to 15% depressed.
      Depressed by 25-30% 02, 07-13, 22 UT.
   Northern Australian Region:
      Near predicted monthly values. Depressed 35% at
      Darwin 20-21 UT. Depressed 15-20% at Townsville
      00-02, 05-08, 12-14, 21-23 UT.
   Southern Australian and New Zealand Region:
      Near predicted monthly values with occasional
      depressions to 20%. Night spread F at Hobart.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 20% enhanced.

PCA Event : No event.

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


2. FORECAST (18 JUNE - 20 JUNE)
Date   T index  Conditions       MUFs                              
18 Jun    70    Normal           Near predicted monthly values 
                                 to 20% depressed
19 Jun    70    Normal           Near predicted monthly values 
                                 to 20% depressed    
20 Jun    70    Normal           Near predicted monthly values 
                                 to 20% depressed   

COMMENT: IPS HF Communications Warning 30 was issued on 17 June 
and is current for 17-19 Jun. Chance of sudden ionospheric disturbances 
(SWFs) over the forecast period. Lower than expected solar flux 
is likely to reduce MUFs below those based on the monthly T index, 
particularly on circuits with southern hemisphere bases.

----------------------------------------------------------
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
PO Box 1386                         WWW: http://www.ips.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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