[Ips-dhfpr] IPS Daily HF Prop Report - 22 April 11
rwc at ips.gov.au
Sat Apr 23 09:56:19 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/
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.
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.
IPS Radio and Space Services email: asfc at ips.gov.au
PO Box 1386 WWW: http://www.ips.gov.au
Haymarket NSW 1240 AUSTRALIA FTP: ftp://ftp.ips.gov.au
tel: +61 2 9213 8010 fax: +61 2 9213 8060
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