[Ips-dhfpr] IPS Daily HF Prop Report - 04 April 01

rwc rwc at ips.gov.au
Thu Apr 5 09:25:37 EST 2001


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 04/2330Z APRIL 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (04 APRIL) 
Date   T index  Conditions    
04 Apr   162    Normal         

Flares    Max     Fadeout    Freq.  Sectors
 M2/--    1222UT  possible   lower  European
 M1/SF 03/2351UT  possible   lower  West Pacific
 M1/SF    1027UT  possible   lower  European
 M1/SF    1159UT  possible   lower  European

MUFs:
   Equatorial PNG Region:
      Mostly near predicted monthly values,
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 20% during local night.
   Southern Australian and New Zealand Region:
      Enhanced by 15% during local day,
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 45% over the UT day.


Predicted Monthly T index for April: 120
2. FORECAST (05 APRIL - 07 APRIL)
Date   T index  Conditions       MUFs                              
05 Apr   120    Fair-normal      depressed 10 to 20%/near predicted 
                                 monthly values 
06 Apr   120    Normal-fair      depressed 10 to 20%/near predicted 
                                 monthly values     
07 Apr   150    Normal-fair      Near predicted monthly values    
COMMENT: IPS HF Communications Warning 18 was issued on 3 April 
and is current for interval 4-6 April. Shortwave fadeouts expected 
on daylight HF circuits. Lower than normal MUFs likely 05-06 
April due to anticipated geomagnetic activity. Polar region HF 
comms still affected by proton event in decline. 

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 




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