[Ips-dhfpr] IPS Daily HF Prop Report - 16 March 09
rwc at ips.gov.au
Tue Mar 17 10:33:42 EST 2009
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 16/2330Z MARCH 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (16 MARCH)
Date T index Conditions
16 Mar -4 Normal
Equatorial PNG/Niue Region:
Near predicted monthly values during local day,
Depressed by 30% during local night.
Northern Australian Region:
Depressed by 25% during local day,
Near predicted monthly values during local night.
Southern Australian and New Zealand Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
PCA Event : No event.
Predicted Monthly T index for March: 3
2. FORECAST (17 MARCH - 19 MARCH)
Date T index Conditions MUFs
17 Mar -4 Normal 0 to 5% below predicted monthly
18 Mar -4 Normal 0 to 5% below predicted monthly
19 Mar 0 Normal Near predicted monthly values
COMMENT: GOES spacecraft solar x-ray flux data shows a slight
increase in background x-ray flux, resulting in a slight increase
in the ionisation of the ionosphere. Expect near monthly predicted
to 5% below HF frequencies for the next two days, unless solar
x-ray activity declines to previous levels. The effect of a small
coronal hole should begin in 3 days, 19th March UT, with slightly
increased geomagnetic activity which will likely raise ionisation
and frequencies to near monthly predicted levels for a day or
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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