[Ips-dhfpr] IPS Daily HF Prop Report - 22 September 11

rwc rwc at ips.gov.au
Fri Sep 23 09:32:07 EST 2011


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 22/2330Z SEPTEMBER 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (22 SEPTEMBER) 
Date   T index  Conditions    
22 Sep    82    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.1    1002UT  possible   lower  European
  X1.5    1102UT  probable   all    European

MUFs:
   Cocos Island Region:
      Near predicted monthly values with enhancements to 45%
      11-17 UT.
   Niue Island Region:
      Near predicted monthly values with enhancements to 45%
      04-10 and 22-23 UT.
   Northern Australian Region:
      Near predicted monthly values with enhancements to 25%
      11-16 UT at Darwin.
   Southern Australian and New Zealand Region:
      Near predicted monthly values to 20% enhanced. Some night
      spread F observed at Canberra and Hobart. No Learmonth
      data 03-23 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 25% enhanced.

PCA Event : No event.

Predicted Monthly T index for September:  62
2. FORECAST (23 SEPTEMBER - 25 SEPTEMBER)
Date   T index  Conditions       MUFs                              
23 Sep    75    Normal           Near predicted monthly values 
                                 to 20% enhanced. 
24 Sep    70    Fair             Near predicted monthly values 
                                 to 20% enhanced.     
25 Sep    55    Normal           Near predicted monthly values. 
                                 Depressions to 20% possible.    

COMMENT: IPS HF Communications Warning 42 was issued on 21 September 
and is current for interval 22-23 September (SWFs) . With solar 
activity increasing, there is the chance of sudden disruptions 
to communications (short wave fade-outs). 

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