[Ips-hf-warning] IPS HF COMMS WARNING

[rwc]

SUBJ: IPS HF RADIO COMMUNICATIONS WARNING 02/20
ISSUED AT 12/0042Z MAY 2002
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED FOR 12 MAY 2002

Several recent CME's have impacted the Earth producing elevated
levels of geomagnetic activity and resulting in degraded HF
conditions for Southern Australian and New Zealand regions.

IF COMMS DIFFICULTIES EXPERIENCED TRY A LOWER FREQUENCY BAND
-------------------------------------------------------------
SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS             
12 May:  low to moderate      Possible             

HF COMMUNICATIONS FORECAST (AUSTRALIAN/NEW ZEALAND REGION)
                                   FREQUENCY BANDS  
       T-index  MUFs          2  4  6  8 12 16 22 26
-------------------------------------------------------------
12 May  110    -20%/normal    2  4  6  8  8 12 16 16 

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