[Ips-dhfpr] IPS Daily HF Prop Report - 19 November 09
rwc
rwc at ips.gov.au
Fri Nov 20 10:39:13 EST 2009
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 19/2330Z NOVEMBER 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (19 NOVEMBER)
Date T index Conditions
19 Nov -2 Normal-fair
Flares: none.
MUFs:
Cocos Island Region:
Near predicted monthly values during local day,
Enhanced by 15% during local night.
Niue Island Region:
Enhanced by 15% during local day,
Near predicted monthly values during local night.
Depressed by 20% after local dawn.
Northern Australian Region:
Near predicted monthly values.
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 November: 1
2. FORECAST (20 NOVEMBER - 22 NOVEMBER)
Date T index Conditions MUFs
20 Nov 10 Normal-fair near predicted monthly values
21 Nov 0 Normal-fair near predicted monthly values
22 Nov -5 Normal Near predicted monthly values
COMMENT: Ionospheric support continued to strengthen over the
last 24 hours as a result of an increase in the number and activity
of solar active regions. HF conditions were mostly normal over
the UT day in the Australian and sub-Antarctic regions. Considerable
periods of sporadic-E were observed at mid-latitude stations
particularly in the afternoon and around dusk. Expect some degraded
HF conditions 20-21 Nov in response to enhanced geomagnetic activity,
particularly at high latitudes. MUFs near predicted monthly values.
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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
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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