[Ips-hf-warning] IPS HF COMMS WARNING issued 0053 UT on 11 Jun 2016 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS HF RADIO COMMUNICATIONS WARNING 16/27
ISSUED AT 0053UT/11 JUNE 2016
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

The earth is beginning to experience high speed streams (HSS) 
from a large Northern Hemisphere coronal hole. The geomagnetic 
conditions are expected to be mostly at active levels and at 
times possibly reaching minor storm levels on June 11 - 12. Slightly 
improved MUFs are expected today, June 11, around the onset of 
the anticipated storm conditions. However, on 12-13 June HF conditions 
expected to degrade slightly in mid and high latitude regions 
of Australia. Note, stronger degradations are expected in the 
Northern Hemisphere regions compared to the Southern Hemisphere 
regions during this time of the year.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 12-13 JUNE 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
_____________________________________________________________
12 Jun:   20          -11%      2  4  6  8 12 16 16 22
13 Jun:   20          -11%      2  4  6  8 12 16 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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