[Ips-whfpr] IPS Weekly Prop. Report (23 September 09)
rwc
rwc at ips.gov.au
Wed Sep 23 12:17:06 EST 2009
SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 23/0200Z SEPTEMBER 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (16 SEPTEMBER - 22 SEPTEMBER)
Date T index Conditions
16 Sep -6 Normal
MUFS:
Equatorial PNG/Niue Region:
Near predicted monthly values. Depressions to 30% at
Niue 01, 02 and 09-15 UT and depressions to 50% at
Vanimo 05-20 UT.
Northern Australian Region:
Near predicted monthly values to 30% depressed 03-10
and 15-20 UT. No Townsville data.
Southern Australian and New Zealand Region:
Near predicted monthly values to 15% depressed.
Enhancements to 45% observed at Canberra, Hobart and
Sydney between about 12-20 UT. Night spread F observed
at Hobart.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values to 30% depressed.
17 Sep -2 Normal
MUFS:
Equatorial PNG/Niue Region:
Near predicted monthly values at Vanimo with
depressions to 45% 05-20 UT. Near predicted monthly
values at Niue with depressions to 30% 00, 02-05 and
17 UT.
Northern Australian Region:
Near predicted monthly values. Enhancements to 30% at
Cocos Is. 04-09 UT. No Townsville data.
Southern Australian and New Zealand Region:
Near predicted monthly values. Enhancements to 60% at
Canberra, Christchurch, Hobart and Sydney mostly
around 12-20 UT. Blanketing sporadic E at Norfolk Is.
02-03 UT and spread F at Hobart during night hours.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values.
18 Sep -7 Normal
MUFS:
Equatorial PNG/Niue Region:
Near predicted monthly values at Niue with some night
spread F. Near predicted monthly values at Vanimo with
depressions to 25% 05-15 UT.
Northern Australian Region:
Near predicted monthly values with depressions to 25%
04-06 UT at Darwin and 07-11, 15-18 UT at Cocos Is. No
data for Townsville.
Southern Australian and New Zealand Region:
Near predicted monthly values. Enhancements to 40%
at Canberra, Christchurch, Hobart and Sydney mostly
between 16-20 UT. Night spread F observed at Hobart.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values.
19 Sep -8 Normal
MUFS:
Equatorial PNG/Niue Region:
Near predicted monthly values. Depressions to 30% at
Vanimo 07-20 UT.
Northern Australian Region:
Near predicted monthly values. Spread F observed at
Cocos Is. 15-22 UT. No data for Townsville.
Southern Australian and New Zealand Region:
Near predicted monthly values. Enhancements to 40% at
Canberra, Christchurch, Hobart and Sydney between
about 12-20 UT.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values.
20 Sep -5 Normal
MUFS:
Equatorial PNG/Niue Region:
Near predicted monthly values. Depressions to 40%
observed at Niue 00-04, 11-17 and 20-21 UT.
Depressions to 25% at Vanimo 06-10 UT and to 50%
13-20 UT.
Northern Australian Region:
Near predicted monthly values. Depressions to 30%
observed at Darwin 04-07 UT. No Townsville data.
Southern Australian and New Zealand Region:
Near predicted monthly values. Enhancements to 60% at
times observed at Canberra, Christchurch, Hobart and
Sydney mostly 12-20 UT. Depressions to 20% observed at
Brisbane 00-06 UT and Norfolk Is. 07-14 UT.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values with enhancements to 30%
at Casey and Scott Base mostly 08-22 UT.
21 Sep -3 Normal
MUFS:
Equatorial PNG/Niue Region:
Near predicted monthly values.
Northern Australian Region:
Depressed by 30% during local day,
Near predicted monthly values during local night.
Southern Australian and New Zealand Region:
Mostly near predicted monthly values,
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
22 Sep -9 Normal
MUFS:
Equatorial PNG/Niue Region:
Depressed by 25% during local day,
Depressed by 35% during local night.
Depressed by 25% after local dawn.
Northern Australian Region:
Depressed by 30% during local day,
Near predicted monthly values during local night.
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.
Predicted Monthly T index for September: 0
2. FORECAST (23 SEPTEMBER - 29 SEPTEMBER)
MUFS: Depressed MUFs of 10%-30% for low latitudes with
near predicted monthly values for mid to high latitudes.
Propagation conditions: Normal, no SWFs expected.
T index: 0
3. OUTLOOK (30 SEPTEMBER - 30 OCTOBER)
Degraded HF propagation conditions possible:
Possible disturbed conditions for high latitudes
26Sep-27Sep, otherwise no signficant degraded periods
expected.
PLEASE NOTE:
Space weather conditions can frequently be determined by short
timescale events that cannot be forecast a week in advance,
particularly at solar maximum.
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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