[Ips-dhfpr] IPS Daily HF Prop Report - 11 November 07
rwc at ips.gov.au
Mon Nov 12 10:34:30 EST 2007
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 11/2330Z NOVEMBER 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (11 NOVEMBER)
Date T index Conditions
11 Nov -26 Normal-fair
Equatorial Niue Region:
Depressed by 25% during local day,
Depressed by 35% during local night.
Depressed by 35% after local dawn.
Northern Australian Region:
Mostly near predicted monthly values,
Depressed by 20% after local dawn.
Southern Australian and New Zealand Region:
Depressed by 15% during local day,
Near predicted monthly values during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
PCA Event : No event.
Predicted Monthly T index for November: 11
2. FORECAST (12 NOVEMBER - 14 NOVEMBER)
Date T index Conditions MUFs
12 Nov -20 Normal-fair Near predicted monthly values
to 15-25% depressed.
13 Nov -20 Normal-fair Near predicted monthly values
to 15-25% depressed.
14 Nov -15 Normal-fair Near predicted monthly values
to 10-20% depressed.
COMMENT: General and greater than expected depressions in MUFs
still observed across Australian/NZ/SW-Pacific region due to
lack of solar ionisation. SW Pacific region particularly affected.
PNG sonde coverage is out but MUFs assumed similarly affected.
Expect to remain heavily depressed for next two days at least.
Onset of coronal hole elevated solar wind speed expected 13 Nov
should energise geomagnetic field and the effect on such a weak
ionosphere may be to raise ionisation and MUFs around 14 Nov.
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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