[Ips-dhfpr] IPS Daily HF Prop Report - 12 April 13 issued 2335 UT on 12 Apr 2013

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/12 APRIL 2013 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (12 APRIL) 
Date   T index  Conditions    
12 Apr    94    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M3.3    2038UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Enhanced by 30% during local day.
      Enhanced by 45% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

PCA Event : No event.

Predicted Monthly T index for April:  68


2. FORECAST (13 APRIL - 15 APRIL)
Date   T index  Conditions       MUFs                              
13 Apr    90    Normal           Near to 15% above predicted 
                                 monthly values
14 Apr    70    Fair-poor        Near predicted monthly values    
15 Apr    30    Poor-fair        15 to 30% below predicted monthly 
                                 values   

COMMENT: IPS Preliminary HF Communications Warning 7 was issued 
on 12 April and is current for 13-14 Apr. HF conditions were 
mostly normal today with minor to moderate MUF enhancements. 
Similar conditions are expected for 13-Apr. Minor to significant 
MUF depressions and degradations in HF conditions are expected 
on 14-15 Apr, especially in mid and Southern Aus/NZ regions, 
due to expected enhancements in geomagnetic activity levels during 
this period. Chance of sudden ionospheric disturbances (SWFs) 
on circuits with daylight sectors.

----------------------------------------------------------
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.