[Ips-dhfpr] IPS Daily HF Prop Report - 01 May 03

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 01/2330Z MAY 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (01 MAY) 
Date   T index  Conditions    
01 May    96    Fair-normal    

Flares: none.

MUFs:
   Equatorial PNG Region:
      Enhanced by 15-25%.
   Northern Australian Region:
      Enhanced by 15-30%.
   Southern Australian and New Zealand Region:
      Enhanced by 20% during local day,
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 15% over the UT day.
      Spread F observed.


PCA Event : No event.

Predicted Monthly T index for May:  71
2. FORECAST (02 MAY - 04 MAY)
Date   T index  Conditions       MUFs                              
02 May    95    Normal-Fair      near predicted monthly values 
03 May    95    Fair-Normal      near predicted monthly values     
04 May    95    Normal           near predicted monthly values    
COMMENT: IPS HF Communications Warning 31 was issued on 30 April 
and is current for interval 30 April to 2 May. Mild depressions 
were generally not observed yesterday, with only Hobart MUFs 
showing a depression response. Mildly degraded conditions remain 
probable for southern Aus/NZ region during local night hours 
and after local dawn over the next two days. Northern Aus region 
MUFs remain unaffected by coronal hole induced geomagnetic activity, 
and have been near to 20% above predicted monthly values. The 
lack of ionospheric response to mild/moderate geomagnetic activity 
from the coronal hole may be due to seasonal factors. 

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