[Ips-dhfpr] IPS Daily HF Prop Report - 05 April 01

rwc rwc at ips.gov.au
Fri Apr 6 09:33:59 EST 2001


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 05/2330Z APRIL 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (05 APRIL) 
Date   T index  Conditions    
05 Apr   168    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M3.1    0226UT  possible   lower  E. Asia/Aust.
  M1.2    0834UT  possible   lower  Mid East/Indian
  M8.4    0924UT  probable   lower  Mid East/Indian
  M5.1    1727UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Equatorial PNG Region:
      Mostly near predicted monthly values,
   Northern Australian Region:
      Enhanced by 15% during local day,
      Enhanced by 35% during local night.
   Southern Australian and New Zealand Region:
      Enhanced by 20% during local day,
      Enhanced by 20% during local night.
      Enhanced by 40% after local dawn.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 15% over the UT day.


Predicted Monthly T index for April: 120
2. FORECAST (06 APRIL - 08 APRIL)
Date   T index  Conditions       MUFs                              
06 Apr   160    Normal           10 to 20% above predicted monthly 
                                 values 
07 Apr   160    Normal           10 to 20% above predicted monthly 
                                 values     
08 Apr   160    Normal           10 to 20% above predicted monthly 
                                 values    
COMMENT: IPS HF Communications Warning 19 was issued on 5 April 
and is current for interval 6-8 April (SWFs) . Shortwave fadeouts 
expected on daylight HF circuits. Polar region HF comms still 
affected by PCA with proton fluxes still above event threshold. 
Depressed conditions for 5 April did not eventuate as the anticipated 
shock from region 9415 CME on 3 April did not hit. 

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 




More information about the ips-dhfpr mailing list