[Ips-hf-warning] SWS HF COMMS WARNING issued 2331 UT on 24 Dec 2017 [SEC=UNCLASSIFIED]
rwc
rwc at ips.gov.au
Mon Dec 25 10:31:20 EST 2017
SUBJ: SWS HF RADIO COMMUNICATIONS WARNING 17/55
ISSUED AT 2315UT/24 DECEMBER 2017
BY THE AUSTRALIAN SPACE FORECAST CENTRE.
Minor to Moderate MUF depressions and degradations in HF conditions
are possible during 25-26 Dec. These depression are the aftermath
of disturbed geomagnetic conditions associated with a coronal
hole.
DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 25-26 DECEMBER 2017
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
_____________________________________________________________
25 Dec: -20 -10% 2 4 6 8 12 16 16 22
26 Dec: -15 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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