[Ips-dhfpr] IPS Daily HF Prop Report - 20 September 08
rwc
rwc at ips.gov.au
Sun Sep 21 09:48:03 EST 2008
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 20/2330Z SEPTEMBER 2008 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (20 SEPTEMBER)
Date T index Conditions
20 Sep -11 Normal
Flares: none.
MUFs:
Equatorial PNG/Niue Region:
Depressed by 20% during local day,
Depressed by 35% during local night.
Depressed by 20% after local dawn.
Northern Australian Region:
Depressed by 20% during local day,
Depressed by 15% during local night.
Depressed by 30% after local dawn.
Southern Australian and New Zealand Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Irregular periods of enhancements and depressions in
MUFs and degradations in HF conditions observed.
PCA Event : No event.
Predicted Monthly T index for September: 2
2. FORECAST (21 SEPTEMBER - 23 SEPTEMBER)
Date T index Conditions MUFs
21 Sep -8 Normal near predicted monthly values/depressed
5 to 15%
22 Sep -8 Normal near predicted monthly values/depressed
5 to 15%
23 Sep -8 Normal near predicted monthly values/depressed
5 to 15%
COMMENT: Degradations in HF conditions and depressions in
MUFs were observed today, especially at low and high latitudes.
Poor ionisation due to continued very low levels of solar
activity seems to be the reason for this. Mid latitudes were
less affected by this phenomenon. Similar HF conditions may
be expected across Auz/NZ regions for the next three days.
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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.
IPS Radio and Space Services email: asfc at ips.gov.au
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