[Ips-dhfpr] IPS Daily HF Prop Report - 28 July 02

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 28/2330Z JULY 2002 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   135    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M2.5    0036UT  possible   lower  West Pacific
  M2.4    2313UT  Confirmed  lower  West Pacific

MUFs:
   Equatorial PNG Region:
      Enhanced by 20% during local day,
      Enhanced by 85% during local night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 30% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 30% during local night.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.


PCA Event : No event. However, two solar regions are capable
	    of producing a proton flare.


Predicted Monthly T index for July: 108
2. FORECAST (29 JULY - 31 JULY)
Date   T index  Conditions       MUFs                              
29 Jul   120    Fair-Poor        10% enhanced/near predicted 
                                 monthly values. 
30 Jul   100    Normal-Fair      near predicted monthly values     
31 Jul   110    Normal           near predicted monthly values    
COMMENT: IPS HF Communications Warning 35 was issued on 28 July
and is current for interval 29-30 July. Degraded HF conditions
are expected for 29-30 July due to increased geomagnetic activity
from an anticipated CME. Strong depressions not expected due
to seasonal factors. Degraded local night conditions expected.
Brief depressions may ne experienced after local dawn 30 July 
if geomagnetic activity eventuates.

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