[Ips-whfpr] IPS Weekly Prop. Report (21 September 05)
rwc
rwc at ips.gov.au
Wed Sep 21 13:33:53 EST 2005
SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 21/0200Z SEPTEMBER 2005 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (14 SEPTEMBER - 20 SEPTEMBER)
Date T index Conditions
14 Sep 18 Fair
MUFS:
Equatorial PNG Region:
Near predicted monthly values with up to 30%
enhancements 02-10 UT.
Northern Australian Region:
Depressed up to 20% during local day,
Near predicted monthly values during local night.
Sporadic E observed at Darwin 09 and 21 UT,
Townsville 17-18 and 20 UT and Niue 07-09 and 17 UT.
Southern Australian and New Zealand Region:
Near predicted monthly values to 20% depressed. Sporadic
E observed at Mundaring 14-15 UT and spread F from 15-22 UT.
At Hobart, spread F observed 10-20 UT.
Antarctic Region (Casey/Scott Base):
Proton event in progress, increased absorption observed.
15 Sep 9 Normal-fair
MUFS:
Equatorial PNG Region:
Near predicted monthly values to 30% enhanced.
Northern Australian Region:
Near predicted monthly values. Sporadic E observed at
Townsville 18-20 UT, Niue at 02-03 and 16-17 UT and Brisbane
03-05 and 07-08 UT.
Southern Australian and New Zealand Region:
Near predicted monthly values to 30% depressed. Spread F
observed 10-20 UT.
Antarctic Region (Casey/Scott Base):
Proton event in progress, increased absorption observed.
16 Sep 13 Normal-Fair
MUFS:
Equatorial PNG Region:
Near predicted monthly values.ay,
Northern Australian Region:
Near predicted monthly values with depressions
to 20% 00-05 UT. Sporadic E observed and Townsville
07-08 and 17-21 UT, Brisbane between 14-17 UT and
Norfolk Island 04-05 and 12-18 UT.
Southern Australian and New Zealand Region:
Near predicted monthly values to 30% depressed.
Antarctic Region (Casey/Scott Base):
Near predicted monthly values.
17 Sep 36 Normal
MUFS:
Equatorial PNG Region:
Near predicted monthly values to 30% enhanced.
Northern Australian Region:
Near predicted monthly values.
Sporadic E observed at Townsville 13-19 UT and
Brisbane 09-10 UT.
Southern Australian and New Zealand Region:
Near predicted monthly values. Spread F observed
at Hobart 10-20 UT and Mundaring 17-22 UT.
Antarctic Region (Casey/Scott Base):
Near predicted monthly values.
18 Sep 46 Normal
MUFS:
Near predicted monthly values
19 Sep 43 Normal
MUFS:
Equatorial PNG Region:
Near predicted monthly values to 40% enhanced.
Spread F observed at Niue 09-11 UT.
Northern Australian Region:
Near predicted monthly values to 40% enhanced.
Blanketing sporadic E observed at Darwin 09-10 UT.
Southern Australian and New Zealand Region:
Near predicted monthly values to 30% enhanced.
Spread F observed at Mundaring 14-20 UT and Hobart
12-20 UT.
Antarctic Region (Casey/Scott Base):
Near predicted monthly values.
20 Sep 39 Normal-fair
MUFS:
Equatorial PNG Region:
Near predicted monthly values to 20% enhanced
with depressions of 30% at Vanimo 13-19 UT.
Northern Australian Region:
Near predicted monthly values. Spread F observed
at Darwin 13-17 UT.
Southern Australian and New Zealand Region:
Near predicted monthly values. Spread F observed at
Hobart 09-20 UT. Disturbance observed at Hobart and
Christchurch around 00-02 UT.
Antarctic Region (Casey/Scott Base):
Near predicted monthly values.
Predicted Monthly T index for September: 24
2. FORECAST (21 SEPTEMBER - 27 SEPTEMBER)
MUFS: MUFs near predicted monthly values.
Propagation conditions: Normal. Low chance of
SWFs.
T index: 24
3. OUTLOOK (28 SEPTEMBER - 28 OCTOBER)
Degraded HF propagation conditions possible:
28-Sep to 30-Sep, 06-Oct to 10-Oct, 27-Oct.
PLEASE NOTE:
At this time of the solar cycle, space weather conditions
are frequently determined by short timescale events, not
able to be forecasted a week in advance.
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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