[Ips-dhfpr] IPS Daily HF Prop Report - 25 May 10
rwc
rwc at ips.gov.au
Wed May 26 09:54:37 EST 2010
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 25/2330Z MAY 2010 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (25 MAY)
Date T index Conditions
25 May 10 Normal
Flares: none.
MUFs:
Cocos Island Region:
Near predicted monthly values to
depressed by 20% during local day,
Near predicted monthly values during local night.
Depressed by 20% after local dawn.
Niue Island Region:
Near predicted monthly values to
depressed by 25% during local day,
Depressed by 15% during local night.
Depressed by 20% after local dawn.
Northern Australian Region:
Near predicted monthly values during local day,
Depressed by 20% during local night.
Southern Australian and New Zealand Region:
Near predicted monthly values during local day,
Enhanced by 15% 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 May: 24
2. FORECAST (26 MAY - 28 MAY)
Date T index Conditions MUFs
26 May 9 Normal near predicted monthly values/depressed
5 to 10%
27 May 4 Normal-fair about 20% below predicted monthly
values
28 May 4 Normal-fair near predicted monthly values/depressed
10 to 20%
COMMENT: IPS HF Communications Warning 9 was issued on 25 May
and is current for interval 27 May only. Mild MUF depressions
were observed in the Australian region due to the lower EUV levels
emitted from the sun, resulting from a low number of sunspots
on the visible solar disc. Degraded conditions may be expected
on 27 and 28 May.
----------------------------------------------------------
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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