[Ips-hf-warning] SWS HF COMMS WARNING issued 0016 UT on 05 Nov 2018 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS HF RADIO COMMUNICATIONS WARNING 18/12 (CORRECTION to warning 18/11)
ISSUED AT 0014UT/05 NOVEMBER 2018
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

Minor to moderate MUF depressions may be expected for the next 
two days (UT days 05 to 06 November) due to enhanced geomagnetic 
activity levels and continued very low levels of ionisation radiation 
from the Sun. High-frequency radio communication users are advised 
to use lower than the predicted monthly frequencies during this 
period.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 05-06 NOVEMBER 2018
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
_____________________________________________________________
05 Nov:  -30   normal/-40%      2  4  4  4  8  8 12 12
06 Nov:  -25   normal/-30%      2  4  6  6  8 12 16 16

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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