[Ips-hf-warning] IPS HF COMMS WARNING

[Regional Warning Centre]

SUBJ: IPS PRELIMINARY HF RADIO COMMUNICATIONS WARNING 00/80
ISSUED AT 24/2259Z NOVEMBER 2000
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

Depressed MUFs by 20 to 30% are likely from the 26 Nov till
28 Nov after the anticipated arrival of several shocks associated
with CMEs, two M1 flares observed on the 23 Nov at 1930 and 2328 UT
and three X flares observed 24 Nov at around 1930, 0502, 1513 and
2143UT.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 26-28 NOVEMBER 2000
IF COMMS DIFFICULTIES EXPERIENCED TRY A LOWER FREQUENCY BAND
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