[Ips-hf-warning] SWS HF SWF COMMS WARNING issued 0619 UT on 21 Jun 2018 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS HF RADIO COMMUNICATIONS WARNING 18/08
ISSUED AT 0615UT/21 JUNE 2018
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

Region 2715 (N08E16) has emerged over the last 24 hours, was 
the source of a C2.1 flare at 0115UT on 21Jun and grown to 300 
millionths of a solar hemisphere. There is slight chance that 
the region may produce an M-class flare (or greater) over the 
next 48 hours. HF fadeout alerts will follow if significant flare 
actually occurs.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 21-22 JUNE 2018
IF COMMS DIFFICULTIES EXPERIENCED TRY A HIGHER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS
21 Jun:  Low to Moderate      Possible
22 Jun:  Low to Moderate      Possible

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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