[Ips-hf-warning] SWS HF COMMS WARNING issued 2343 UT on 26 Dec 2016 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS HF RADIO COMMUNICATIONS WARNING 16/70
ISSUED AT 2343UT/26 DECEMBER 2016
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

The earth ionosphere is currently under the influence of disturbed 
solar winds associated with a positive polarity coronal hole. 
The HF depressions are currently been experienced in the high 
latitude regions. Over the next two days (27-28 December), the 
high latitude depressions are expected to extend into the low 
latitude regions. HF users are advised to use lower than the 
monthly predicted frequencies.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 27-28 DECEMBER 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
_____________________________________________________________
27 Dec:   -5          -11%      2  4  6  8 12 16 16 22
28 Dec:    0   normal/-15%      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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