[Ips-dhfpr] IPS Daily HF Prop Report - 23 July 02

rwc rwc at ips.gov.au
Wed Jul 24 09:56:46 EST 2002


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 23/2330Z JULY 2002 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 JULY) 
Date   T index  Conditions    
23 Jul   104    Normal         

Flares    Max     Fadeout    Freq.  Sectors
 X4/2B    0035UT  probable   all    West Pacific

MUFs:
   Equatorial PNG 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):
      Proton event in progress, increased absorption observed.


PCA Event : 10Mev Proton/PCA Event Began 22 07 2002 0715UT and is in progress

Predicted Monthly T index for July: 108
2. FORECAST (24 JULY - 26 JULY)
Date   T index  Conditions       MUFs                              
24 Jul   115    Normal           Near predicted monthly values 
25 Jul    75    Fair-poor        near predicted monthly values/depressed 
                                 15 to 30%     
26 Jul    90    Fair             depressed 10 to 20%/near predicted 
                                 monthly values    
COMMENT: IPS HF Communications Warning 32 was issued on 23 July 
and is current for interval 23-25 July (SWFs) . Degraded HF conditions 
possible for high latitudes for 24 July due to absorbtion from 
PCA event. Degraded HF conditions again expected for 25-26 July 
for all latitudes due to anticipated increased geomagnetic activity. 
Shortwave fadeouts possible on daylight HF circuits due to active 
solar regions. 

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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