[Ips-dhfpr] IPS Daily HF Prop Report - 22 April 11
Regional Warning Centre
rwc at ips.gov.au
Sat Apr 23 09:55:30 EST 2011
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 22/2330Z APRIL 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (22 APRIL)
Date T index Conditions
22 Apr 61 Normal
Flares Max Fadeout Freq. Sectors
M1.8 0459UT possible lower E. Asia/Aust.
M1.2 1554UT possible lower South American/
Atlantic
MUFs:
Cocos Island Region:
Enhanced by 25% during local day,
Near predicted monthly values during local night.
Niue Island Region:
Near predicted monthly values.
Northern Australian Region:
Near predicted monthly values during local day,
Depressed by 15% at times during local night.
Southern Australian and New Zealand Region:
Near predicted monthly values to enhanced by 15%.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
PCA Event : No event.
Predicted Monthly T index for April: 44
2. FORECAST (23 APRIL - 25 APRIL)
Date T index Conditions MUFs
23 Apr 60 Normal Near predicted monthly values
24 Apr 60 Normal Near predicted monthly values
25 Apr 55 Normal Near predicted monthly values
COMMENT: IPS HF Communications Warning 27 was issued on 22 April
and is current for interval 22-23 April (SWFs) . Sporadic-E and
Spread-F conditions were observed at times during 22 April which
may have degraded HF conditions. Mostly normal conditions are
expected for the next few days. Sporadic-E and Spread-F conditions
are possible at times over the next few days. There is the chance
of SWFs over the next 24 hours.
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For an explanation of some of the terms in this report, go to
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.
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