[Ips-hf-warning] IPS HF COMMS WARNING

[rwc]

SUBJ: IPS HF RADIO COMMUNICATIONS WARNING 01/52
ISSUED AT 30/0026Z SEPTEMBER 2001
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

MILDLY DEPRESSED/DEGRADED CONTIONS EXPECTED NEXT FEW
DAYS MID TO HIGH LATITUDES DUE TO CORONAL HOLE
AND CME INDUCED GEOMAGNETIC ACTIVITY. 

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 30 SEPTEMBER 2001 TO 02 OCTOBER 2001
IF COMMS DIFFICULTIES EXPERIENCED AND NO SOLAR FLARE 
IS IN PROGRESS TRY A LOWER FREQUENCY BAND
-------------------------------------------------------------
SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS             
30 Sep:  moderate to high     Probable             
01 Oct:  moderate to high     Probable             
02 Oct:  moderate to high     Probable             

HF COMMUNICATIONS FORECAST (AUSTRALIAN/NEW ZEALAND REGION)
                                   FREQUENCY BANDS  
       T-index  MUFs          2  4  6  8 12 16 22 26
-------------------------------------------------------------
30 Sep   110   -15%/normal    2  4  6  8  8 16 16 22 
 1 Oct   100   -15%/normal    2  4  6  8  8 16 16 22 
 2 Oct   100   -15%/normal    2  4  6  8  8 16 16 22 


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