[Ips-dhfpr] IPS Daily HF Prop Report - 04 April 12 issued 2351 UT on 04 Apr 2012

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 04/2330Z APRIL 2012 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (04 APRIL) 
Date   T index  Conditions    
04 Apr    76    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   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 April:  81


2. FORECAST (05 APRIL - 07 APRIL)
Date   T index  Conditions       MUFs                              
05 Apr    70    Normal           0 to 5% below predicted monthly 
                                 values
06 Apr    70    Normal           0 to 5% below predicted monthly 
                                 values    
07 Apr    80    Normal           Near predicted monthly values   

COMMENT: HF conditions in the Australian region were mostly near 
predicted monthly values with northern near equatorial sites 
showing overnight MUF depressions, possibly from seasonal neutral 
winds in the thermosphere near 300km altitude driving the equatorial 
fountain, as geomagnetic activity was only Quiet with occasional 
Unsettled. MUFs are expected to remain mostly near or slightly 
below predicted monthly values for 5-6th April as, sunspot number 
on the disc is slightly below the average cycle 24 rise and there 
may be some moderate geomagnetic disturbances on those days such 
as from a weak CME launched 2 April that may effect a glancing 
blow late (UT) on the 5th (early morning 6th AEST).

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