[Ips-dhfpr] IPS Daily HF Prop Report - 31 May 03

rwc rwc at ips.gov.au
Sun Jun 1 08:38:11 EST 2003


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 31/2330Z MAY 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (31 MAY) 
Date   T index  Conditions    
31 May    66    Fair-normal    

Flares    Max     Fadeout    Freq.  Sectors
 M9/2B    0224UT  probable   lower  E. Asia/Aust.

MUFs:
   Equatorial PNG Region:
      Enhanced by 20% during local day,
      Enhanced by 60% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Southern Australian and New Zealand Region:
      Depressed 15% to near normal local day.
      Depressed by 20% during local night.
   Antarctic Region (Casey/Scott Base):
      15% depressed, absorption observed early in UT day.



PCA Event : Began at 0155UT 29/05, Ended at 0150UT 30/05
 and, Began at 0505UT 31/05, Ended at 1505UT 31/05
 

Predicted Monthly T index for May:  72
2. FORECAST (01 JUNE - 03 JUNE)
Date   T index  Conditions       MUFs                              
01 Jun    65    Fair-Normal      depressed 10 to 15%/near predicted 
                                 monthly values 
02 Jun    70    Normal-Fair      Near predicted monthly values     
03 Jun    50    Fair             near predicted monthly values/depressed 
                                 10 to 20%    
COMMENT: Some mild depressions may be experienced after local 
dawn this morning southern Aus/NZ region. Generaaly improving 
HF conditions expected, before a return to degraded conditions 
after 02 Jun for mid to high latitudes (southern Aus/NZ region)
due to high speed wind stream from solar coronal hole. Also, 
a glancing blow from the M9/CME may arrive on 03 Jun. 

IPS Radio and Space Services      | email: asfc at ips.gov.au
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