[Ips-dhfpr] IPS Daily HF Prop Report - 17 May 02

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 17/2330Z MAY 2002 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 MAY) 
Date   T index  Conditions    
17 May   120    Normal         

Flares    Max     Fadeout    Freq.  Sectors
 M1/--    0123UT  possible   lower  West Pacific
 M1/--    0754UT  possible   lower  Mid East/Indian
 M2/SF    1608UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Equatorial PNG Region:
      Enhanced by 15-30%.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 40% over the UT day.


Predicted Monthly T index for May: 113
2. FORECAST (18 MAY - 20 MAY)
Date   T index  Conditions       MUFs                              
18 May   130    Normal-fair      10 to 15% above predicted monthly 
                                 values 
19 May   110    Fair-normal      Depressed 5-15% after local 
                                 dawn, then returning enhanced 
                                 5-15%.     
20 May   110    Normal-fair      Near predicted monthly values    
COMMENT: IPS HF Communications Warning 23 was issued on 17 May 
and is current for interval 17-19 May (SWFs) . Degraded HF conditions 
expected southern Aus/NZ region late 18-19 May, local night hours, 
due to recent mass ejection. Brief depressions may be experienced 
after local dawn on 19 May. 

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