[Ips-dhfpr] IPS Daily HF Prop Report - 22 January 01

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 22/2330Z JANUARY 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (22 JANUARY) 
Date   T index  Conditions    
22 Jan    83    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
 M1/SF 21/2312UT  possible   lower  West Pacific

MUFs:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      No data available during local night.
   Northern Australian Region:
      Depressed by 15 to 30% over the UT day.
   Southern Australian and New Zealand Region:
      Depressed by 5 to 15% over the UT day.
   Antarctic Region (Casey/Scott Base):
      Depressed by 20% over the UT day.

Predicted Monthly T index for January: 117
2. FORECAST (23 JANUARY - 25 JANUARY)
Date   T index  Conditions       MUFs                              
23 Jan    80    Fair-normal      10 to 15% below predicted monthly 
                                 values 
24 Jan   120    Normal           near predicted monthly values     
25 Jan   120    Normal           near predicted monthly values    
COMMENT: IPS HF Communications Warning 1 was issued on 22 January 
and is current for interval 23-24 January. Depressed conditions 
were observed on 22 JAN probably triggered by unsettled and active 
to minor storm levels of geomagnetic conditions due to long periods 
of IMF Bz observed on 21 JAN related to sector boundary crossings. 
Chance of depressed ionospheric conditions are expected on the 
23 JAN following the anticipated arrival of shocks associated 
with the recent CMEs produced by region 9313. 

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