[Ips-dhfpr] SWS Daily HF Prop Report - 28 September 19 issued 2331 UT on 28 Sep 2019
Regional Warning Centre
rwc at ips.gov.au
Sun Sep 29 09:31:35 EST 2019
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/28 SEPTEMBER 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (28 SEPTEMBER)
Date T index Conditions
28 Sep -1 Normal-fair
Flares: none.
MUFs:
Cocos Island Region:
No data available during local day.
No data available during local night.
Niue Island Region:
Enhanced by 30% during local day.
Near predicted monthly values during local night.
Northern Australian Region:
Near predicted monthly values during local day.
Depressed by 20% during local night.
Southern Australian Region:
Near predicted monthly values during local day.
Enhanced by 20% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
PCA Event : No event.
Monthly T index:
Month T index
Aug -3
Sep -14
Oct -16
2. FORECAST (29 SEPTEMBER - 01 OCTOBER)
Date T index Conditions MUFs
29 Sep -20 Fair-normal Near predicted monthly values/depressed
10 to 30%
30 Sep -20 Fair-normal Near predicted monthly values/depressed
10 to 20%
01 Oct -10 Normal-fair Near predicted monthly values
COMMENT: Maximum usable frequencies (MUFs) in the Australian
region were mostly near predicted monthly values during UT day
28 September. Some periods of minor to moderate MUF depressions
were also observed, mostly in the Northern Australian region
local night. Sporadic-E and Spread-F occurrences were observed
over some sites. Degraded HF propagation conditions are likely
for 29-30 September as a consequence of the geomagnetic disturbance.
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For an explanation of some of the terms in this report, go to
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Glossary on Solar Terrestrial Terms.
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