[Ips-hf-warning] IPS HF COMMS WARNING

[rwc]

SUBJ: IPS HF RADIO COMMUNICATIONS WARNING 03/24
ISSUED AT 27/2303Z MARCH 2003
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

SOUTHERN REGION MUFS DEPRESSED AFTER LOCAL DAWN THIS
MORNING FOLLOWING OVERNIGHT GEOMAGNETIC ACTIVITY
INDUCED BY CORONAL HOLE HIGH SPEED WIND STREAM.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FIRST HALF OF 28 MARCH SOUTHERN AUS/NZ REGION.

NORTHERN AUS REGION MUFS CURRENTLY NEAR NORMAL AND
COMMUNICATORS WITHIN THIS REGION SHOULD USE A TINDEX
OF 90.

IF COMMS DIFFICULTIES EXPERIENCED TRY A LOWER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS             
28 Mar:  low to moderate      Possible             

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


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