[Ips-hf-warning] IPS HF COMMS WARNING

[rwc]

SUBJ: IPS HF RADIO COMMUNICATIONS WARNING 03/64
ISSUED AT 16/2323Z SEPTEMBER 2003
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 17-18 SEPTEMBER 2003 SOUTHERN AUS/NZ 
REGION. NORTEHRN AUS REGION MUFS MAY EXPERIENCE
BRIEF DEPRESSIONS OF 15% AFTER LOCAL DAWN.

IONOSPHERIC DEPRESSION RESPONSE EXPECTED DUE 
TO INCREASED GEOMAGNETIC ACTIVITY ASSOCIATED WITH 
CORONAL HOLE HIGH SPEED WIND STREAM ENTRY.

IF COMMS DIFFICULTIES EXPERIENCED TRY A LOWER FREQUENCY BAND
FOLLOW ON HF WARNING FROM HF WARNING: 63
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS             
17 Sep:  low                  None expected        
18 Sep:  low                  None expected        

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


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