[Ips-hf-warning] IPS HF COMMS WARNING

[rwc]

SUBJ: IPS HF RADIO COMMUNICATIONS WARNING 03/33
ISSUED AT 07/2213Z MAY 2003
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

OVERNIGHT GEOMAGNETIC ACTIVITY OBSERVED, 
INDUCED BY SOLAR CORONAL HOLE HIGH SPEED 
WIND STREAM.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FOR 08 MAY 2003 SOUTHERN AUS/NZ REGION ONLY.

NORTHERN AUS REGION MUFS EXPECTED TO BE UNAFFECTED
AND COMMUNICATORS IN NORTHERN AUS REGION SHOULD USE A
T INDEX OF 80.

IF COMMS DIFFICULTIES EXPERIENCED TRY A LOWER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS             
08 May:  Low                  None expected        

HF COMMUNICATIONS FORECAST (SOUTHERN AUSTRALIAN/NEW ZEALAND REGION)
                                   FREQUENCY BANDS  
       T-index  MUFs          2  4  6  8 12 16 22 26
_____________________________________________________________
8 May   40      -15%          2  4  6  8 12 12 16 22 


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