[Ips-hf-warning] ASWFC HF SHORTWAVE FADEOUT WARNING issued 2244 UT on 19 May 2023 [SEC=OFFICIAL]

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SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 23/47
ISSUED AT 2243UT/19 MAY 2023
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Sunspot region AR3311 has recently rotated on the disk near latitude 
N18 and has produced numerous M-class flares. R1-R2 conditions 
expected due to region AR3311 in the coming days.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 20-22 MAY 2023
IF COMMS DIFFICULTIES EXPERIENCED TRY A HIGHER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS
20 May:  R1-R2                Probable
21 May:  R1-R2                Possible
22 May:  R1-R2                Possible

Australian Space Weather Forecasting Centre
Bureau of Meteorology
ASWFC at bom.gov.au
www.bom.gov.au | www.sws.bom.gov.au