[Ips-dhfpr] IPS Daily HF Prop Report - 27 November 00

[Regional Warning Centre]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 27/2330Z NOVEMBER 2000 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (27 NOVEMBER) 
Date   T index  Conditions    
27 Nov    86    Fair           

Flares: none.

MUFs:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Depressed by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day,
      Depressed by 20% during local night.
   Antarctic Region (Casey/Scott Base):
      No data available over the UT day.


Predicted Monthly T index for November: 133
2. FORECAST (28 NOVEMBER - 30 NOVEMBER)
Date   T index  Conditions       MUFs                              
28 Nov    90    Fair             about 30% below predicted monthly 
                                 values 
29 Nov   100    Fair-normal      about 20% below predicted monthly 
                                 values     
30 Nov   120    Normal           about 10% below predicted monthly 
                                 values    
COMMENT: IPS HF Communications Warning 81 was issued on 27 November 
and is current for interval 28-30 November. Ionospheric depressions 
were observed on the 27 Nov as IMF Bz turned southwards after 
the shock arrivals of the 26 Nov. Depressed ionospheric conditions 
by 20% to 30% are anticipated for the 28 and 29 Nov after the 
expected arrival of several shocks associated with CMEs observed 
following further flares on the 26 Nov. 


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