[Ips-dhfpr] IPS Daily HF Prop Report - 07 August 12 issued 2340 UT on 07 Aug 2012

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/07 AUGUST 2012 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 AUGUST) 
Date   T index  Conditions    
07 Aug    89    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 40% during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 15% 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.

Predicted Monthly T index for August:  77


2. FORECAST (08 AUGUST - 10 AUGUST)
Date   T index  Conditions       MUFs                              
08 Aug    70    Normal           0 to 10% below predicted monthly 
                                 values
09 Aug    80    Normal           Near predicted monthly values    
10 Aug    85    Normal           Near predicted monthly values   

COMMENT: HF conditions were Normal 07-Aug, with MUFs mostly near 
monthly values at mid-latitudes and more variable at low-latitudes 
with night depressions in northern Australia. The most southern 
Australian latitudes experienced strong nightime spread-F conditions, 
measured at Hobart, causing HF multipath fading. The ionosphere 
is stronger than average and T index is higher than the predicted 
monthly value due to a large number of smaller sunspots emitting 
ionising EUV. Early UT day 8 Aug a CME should strike a glancing 
blow causing Unsettled-Active geomagnetic conditions, slightly 
depressing MUFs, with recovery on the 9th.

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

IMPORTANT: This e-mail, including any attachments, may contain,
confidential or copyright information.  The views expressed in 
this message are those of the individual sender, unless 
specifically stated to be the views of IPS.  If you are not 
the intended recipient, please contact the sender immediately 
and delete all copies of this e-mail and attachments. 
To unsubscribe from an IPS mail list either send an email to 
"MAIL_LIST"-leave at ips.gov.au or go to
http://listserver.ips.gov.au/mailman/listinfo/"MAIL_LIST".
Information about training can be obtained from
http://listserver.ips.gov.au/mailman/listinfo/ips-training.
General information is available from
http://listserver.ips.gov.au/mailman/listinfo/ips-info.