[Ips-hf-warning] ASWFC HF SHORTWAVE FADEOUT WARNING issued 0138 UT on 21 Jun 2023 [SEC=OFFICIAL]

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SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 23/57
ISSUED AT 0137UT/21 JUNE 2023
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

A solar region in the south east solar quadrant has produced 
an R3 level flare on 20-Jun. This region currently appears to 
be showing an increase in magnetic complexity. R1 flare activity 
with the chance of isolated R2 flares is now considered likely.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 21-23 JUNE 2023
IF COMMS DIFFICULTIES EXPERIENCED TRY A HIGHER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS
21 Jun:  R1, chance R2           Probable
22 Jun:  R1, chance R2           Probable
23 Jun:  R1, chance R2           Probable

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