[Ips-hf-warning] SWS HF COMMS WARNING issued 0019 UT on 29 Sep 2016 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS HF RADIO COMMUNICATIONS WARNING 16/42
ISSUED AT 0019UT/29 SEPTEMBER 2016
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

The geomagnetic conditions are expected to vary between active 
levels to major storms for the next three days. This is because 
the solar winds are expected to be in excess of 600 km/s associated 
with a very large positive polarity coronal hole. Strong HF depressions 
are expected in the mid and high latitude regions of both the 
hemispheres. Near monthly predicted HF conditions are expected 
in the equatorial regions. HF users are advised to selected lower 
than usual frequencies.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 29 SEPTEMBER 2016 TO 01 OCTOBER 2016
IF COMMS DIFFICULTIES EXPERIENCED TRY A LOWER FREQUENCY BAND
_____________________________________________________________

HF COMMUNICATIONS FORECAST (AUSTRALIAN/NEW ZEALAND REGION)
                                   FREQUENCY BANDS
       T-index      MUFs        2  4  6  8 12 16 22 26
_____________________________________________________________
29 Sep:    0          -23%      2  4  6  8  8 12 16 16
30 Sep:    5          -20%      2  4  6  8  8 12 16 16
01 Oct:    3          -16%      2  4  6  8 12 12 16 22

Space Weather Services              email: asfc at bom.gov.au
Bureau of Meteorology
PO Box 1386                         WWW: http://www.sws.bom.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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