[Ips-dhfpr] IPS Daily HF Prop Report - 21 August 15 issued 2330 UT on 21 Aug 2015

Regional Warning Centre rwc at ips.gov.au
Sat Aug 22 09:30:36 EST 2015


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/21 AUGUST 2015 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (21 AUGUST) 
Date   T index  Conditions    
21 Aug    34    Depressed         

Flares    Max     Fadeout    Freq.  Sectors
 M1.4    0948 UT  possible   lower  Mid East/Indian

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 50% during local night.
      Depressed by 25% after local dawn.
   Niue Island Region:
      Depressed by 25% during local day.
      Depressed by 50% during local night.
      Depressed by 25% after local dawn.
   Northern Australian Region:
      Depressed by 25% during local day.
      Depressed by 30% during local night.
   Southern Australian Region:
      Depressed by 25% during local day.
      Depressed by 25% during local night.
      Depressed by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 20% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jul      60
Aug      80
Sep      78


2. FORECAST (22 AUGUST - 24 AUGUST)
Date   T index  Conditions     MUFs                              
22 Aug    35    Depressed      10 to 30% below predicted monthly 
                               values
23 Aug    40    Depressed      10 to 30% below predicted monthly 
                               values    
24 Aug    40    Depressed      10 to 25% below predicted monthly 
                               values   

COMMENT: IPS SWF HF Communications Warning 38 was issued on 21 
August and is current for 21-22 Aug. Conditions for HF radio 
wave propagation were depressed throughout the Australian region 
during 21 August. The depressions were up to 50% at the low latitude 
stations Cocos Island, Niue and Darwin, and up to 30% at the 
Australian mid-latitude stations. The conditions are expected 
to remain unusually depressed during coming days. However, they 
are expected to trend back towards monthly predicted values during 
the 4 week period approaching the September equinox.

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

Space Weather Services              email: asfc at ips.gov.au
Bureau of Meteorology
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.





More information about the ips-dhfpr mailing list