[Ips-dhfpr] IPS Daily HF Prop Report - 24 May 01

rwc rwc at ips.gov.au
Fri May 25 09:13:21 EST 2001


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 24/2330Z MAY 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (24 MAY) 
Date   T index  Conditions    
24 May   121    Normal         

Flares    Max     Fadeout    Freq.  Sectors
 M1/1N    1944UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 20% during local night.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.
      Spread F observed.


Predicted Monthly T index for May: 117
2. FORECAST (25 MAY - 27 MAY)
Date   T index  Conditions       MUFs                              
25 May   110    Normal-fair      depressed 10 to 15%/near predicted 
                                 monthly values 
26 May   115    Normal           Near predicted monthly values     
27 May   105    Normal-fair      near predicted monthly values/depressed 
                                 10 to 15%    
COMMENT: Expected coronal hole induced activity may produce mild 
ionospheric depressions 24/25 May. Further degradation possible 
27/28 May, mid to high latitudes only, due to recent CME. 

IPS Radio and Space Services      | email: asfc at ips.gov.au
PO Box 1386                       | WWW: http://www.ips.gov.au/asfc
Haymarket NSW 1240  AUSTRALIA     | FTP: ftp://ftp.ips.gov.au/users/asfc/ 
tel: +61 2 9213 8010              | fax: +61 2 9213 8060 




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