[Ips-dhfpr] IPS Daily HF Prop Report - 15 February 11
rwc
rwc at ips.gov.au
Wed Feb 16 10:41:30 EST 2011
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 15/2330Z FEBRUARY 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (15 FEBRUARY)
Date T index Conditions
15 Feb 46 Normal
Flares Max Fadeout Freq. Sectors
X2.3 0156UT probable all E. Asia/Aust.
MUFs:
Cocos Island Region:
Depressed by 15% during local day,
Depressed by 15% during local night.
Enhanced by 35% after local dawn.
Niue Island Region:
Enhanced by 35% during local day,
Enhanced by 40% during local night.
Northern Australian Region:
Near predicted monthly values.
Southern Australian and New Zealand Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Depressed by 20% over the UT day.
PCA Event : No event.
Predicted Monthly T index for February: 38
2. FORECAST (16 FEBRUARY - 18 FEBRUARY)
Date T index Conditions MUFs
16 Feb 45 Normal near predicted monthly values
17 Feb 25 Fair depressed 10 to 30%/near predicted
monthly values
18 Feb 25 Fair depressed 10 to 30%/near predicted
monthly values
COMMENT: Variable HF conditions observed over Australian region
for the last 24 hours with enhanced MUFs observed at IPS Niue
station during local day and night and depressed MUFs of ~15%
for Cocos Is. Normal ionospheric support for Northern AUS and
Southern AUS/NZ regions. Notable short wave fadeout observed
between 0155UT and 0220UT for the east coast of Australia following
the large X2.2 xray flare. Isolated depressions for Antarctic
regions. MUFs are at expected to be near predicted monthly values
with enhanced conditions for Northern AUS/Equatorial regions for
16Feb. Increased geomagnetic activity is expected from 17Feb-18Feb
with depressed MUFs for mid to high latitudes of 10%-30% predicited
and disturbed conditions for high latitudes.
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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.
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PO Box 1386 WWW: http://www.ips.gov.au
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