[Ips-dhfpr] IPS Daily HF Prop Report - 09 September 01

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 09/2330Z SEPTEMBER 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (09 SEPTEMBER) 
Date   T index  Conditions    
09 Sep   147    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.9    0241UT  possible   lower  E. Asia/Aust.
  M1.0    1001UT  possible   lower  European
  M3.4    1516UT  possible   lower  South American/
                                    Atlantic
  M2.0    1841UT  possible   lower  East Pacific/
                                    North American
  M9.5    2045UT  probable   lower  East Pacific/
                                    North American

MUFs:
   Equatorial PNG Region:
      Enhanced by 20%.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 45% during local night.
   Southern Australian and New Zealand Region:
      Enhanced by 20-30% during local day,
   Antarctic Region (Casey/Scott Base):
      Enhanced by 15% over the UT day.


Predicted Monthly T index for September: 108
2. FORECAST (10 SEPTEMBER - 12 SEPTEMBER)
Date   T index  Conditions       MUFs                              
10 Sep   145    Normal           about 20% above predicted monthly 
                                 values 
11 Sep   145    Normal           about 20% above predicted monthly 
                                 values     
12 Sep   110    Normal-Fair      Initially 15% enhanced, then 
                                 decoming depressed 15% later 
                                 in UT day.    
COMMENT: IPS HF Communications Warning 46 was issued on 9 September 
and is current for interval 10-12 September (SWFs) . Enhanced 
MUFs again expected today. Fadeouts can be expected on daylight 
HF circuits. Southern region Aus/NZ may expereience a degradation 
in HF conditions local night 12 Sep and after local dawn 13 Sep. 
Degradation forecast for 12 Sep will be revised as more details
of M9 event become available.

IPS Radio and Space Services      | email: asfc at ips.gov.au
PO Box 1386                       | WWW: http://www.ips.gov.au/asfc
Haymarket NSW 1240  AUSTRALIA     | FTP: ftp://ftp.ips.gov.au/users/asfc/ 
tel: +61 2 9213 8010              | fax: +61 2 9213 8060