[Ips-dhfpr] IPS Daily HF Prop Report - 27 April 06
rwc at ips.gov.au
Fri Apr 28 09:40:04 EST 2006
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 27/2330Z APRIL 2006 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (27 APRIL)
Date T index Conditions
27 Apr 31 Normal
Flares Max Fadeout Freq. Sectors
M7.9 1552UT probable lower South American/
about 15% above predicted monthly values
PCA Event : No event.
Predicted Monthly T index for April: 16
2. FORECAST (28 APRIL - 30 APRIL)
Date T index Conditions MUFs
28 Apr 31 Normal 10 to 25% above predicted monthly
29 Apr 31 Normal 10 to 25% above predicted monthly
30 Apr 32 Normal 10 to 25% above predicted monthly
COMMENT: Mostly normal HF conditions observed over the UT day.
Some low latitude stations again observed nighttime enhancements,
including pre-dusk or pre-dawn bulges depending on location.
PNG sector seemed to most affected with strong nightime absorption
also observed at Vanimo. Strong sporadic activity observed over
NZ pre-dawn. High latitudes near the polar cap appeared enhanced.
Mostly normal HF conditions expected for the next three days
with a slightly strengthening ionosphere due to extra ionising
solar radiation from active regions 875,876 and 877. MUFs generally
above predicted monthly values by 10-25%.
For an explanation of some of the terms in this report, goto
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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