[Ips-dhfpr] IPS Daily HF Prop Report - 18 January 05

rwc rwc at ips.gov.au
Wed Jan 19 10:12:36 EST 2005


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 18/2330Z JANUARY 2005 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 JANUARY) 
Date   T index  Conditions    
18 Jan    46    Fair           

Flares    Max     Fadeout    Freq.  Sectors
  M1.6    1133UT  possible   lower  European
  M4.6    1551UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Equatorial PNG Region:
      Enhanced by 35% during local day,
      Enhanced by 20% during local night.
   Northern Australian Region:
      Enhanced by 30% during local day,
      Near predicted monthly values during local night.
      Depressed by 20% after local dawn.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
      Depressed by 25% after local dawn.
   Antarctic Region (Casey/Scott Base):
      Proton event in progress, increased absorption observed.

PCA Event : 10Mev Proton/PCA Event Began 16 01 2005 0220UT and is 
	    in progress

Predicted Monthly T index for January:  32
2. FORECAST (19 JANUARY - 21 JANUARY)
Date   T index  Conditions       MUFs                              
19 Jan   -10    Poor-Fair        30 to 40% below predicted monthly 
                                 values 
20 Jan    10    Fair-normal      depressed 10 to 20%/near predicted 
                                 monthly values     
21 Jan    30    Normal           Near predicted monthly values    
COMMENT: IPS HF Communications Warning 4 was issued on 17 January 
and is current for interval 18-20 January (SWFs) . Southern Aus/NZ 
MUFs expected depressed after local dawn this morning. Northern 
Aus stations currently near normal. 
----------------------------------------------------------
For an explanation of some of the terms in this report, goto
http://www.ips.gov.au, and follow links to Educational->
Gloassary 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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