[Ips-dhfpr] IPS Daily HF Prop Report - 16 November 03

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 16/2330Z NOVEMBER 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (16 NOVEMBER) 
Date   T index  Conditions    
16 Nov    40    Fair           

Flares: none.

MUFs:
   Equatorial PNG Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 15% after local dawn,
      Enhanced by 15% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day,
      Depressed by 25% during local night.
      Depressed by 25% after local dawn.
   Antarctic Region (Casey/Scott Base):
      Slightly below predicted monthly values over 
      the UT day, with extended periods of disturbance.


PCA Event : No event.

Predicted Monthly T index for November:  52
2. FORECAST (17 NOVEMBER - 19 NOVEMBER)
Date   T index  Conditions       MUFs                              
17 Nov    25    Fair             10 to 20% below predicted monthly 
                                 values 
18 Nov    35    Fair             5 to 10% below predicted monthly 
                                 values     
19 Nov    55    Normal-Fair      Near predicted monthly values    
COMMENT: IPS HF Communications Warning 87 was issued on 16 November 
and is current for interval 16-17 November. Widespread intense 
daytime sporadic-E conditions observed, especially at mid latitudes. 
Night time equatorial spread-F conditions observed. Spread-F 
observed at high latitudes, with occasional slant-E observed 
at polar cap stations. Ionospheric depressions of 10-30% observed 
after local dawn today S. Aus/NZ regions. Expect continuing periods 
of HF degradation for the next two days, especially at mid to 
high latitudes, due to persisting coronal hole high speed wind 
stream. 

IPS Radio and Space Services      | email: asfc at ips.gov.au
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Haymarket NSW 1240  AUSTRALIA     | FTP: ftp://ftp.ips.gov.au 
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