[Ips-dhfpr] IPS Daily HF Prop Report - 28 July 03

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 28/2330Z JULY 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (28 JULY) 
Date   T index  Conditions    
28 Jul    60    Fair-normal    

Flares: none.

MUFs:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced by 10-30% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values,
      Mild depressions after local dawn.
   Antarctic Region (Casey/Scott Base):
      Extended periods of localised disturbance.


PCA Event : No event.

Predicted Monthly T index for July:  63
2. FORECAST (29 JULY - 31 JULY)
Date   T index  Conditions       MUFs                              
29 Jul    65    Fair             near predicted monthly values/depressed 
                                 10 to 20% 
30 Jul    60    Fair             near predicted monthly values/depressed 
                                 10 to 20%     
31 Jul    70    Normal-Fair      Near predicted monthly values    
COMMENT: IPS HF Communications Warning 54 was issued on 27 July 
and is current for interval 28-29 July. Intense daytime sporadic-E 
observed S. Ocean/Antarctic regions. Periods of spread-F observed 
S. Aus/Antarctic regions. Expect periods of ionospheric depression 
at mid to high latitudes for the next few days in association 
with coronal hole induced geomagnetic disturbance. 

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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