[Ips-dhfpr] IPS Daily HF Prop Report - 08 February 11
rwc
rwc at ips.gov.au
Wed Feb 9 10:41:43 EST 2011
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 08/2330Z FEBRUARY 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (08 FEBRUARY)
Date T index Conditions
08 Feb 35 Normal-fair
Flares: none.
MUFs:
Cocos Island Region:
Enhanced by 20% during local day,
Near predicted monthly values during local night.
Niue Island Region:
Near predicted monthly values during local day,
Enhanced by 15% during local night.
Northern Australian Region:
Enhanced by 15% 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.
PCA Event : No event.
Predicted Monthly T index for February: 38
2. FORECAST (09 FEBRUARY - 11 FEBRUARY)
Date T index Conditions MUFs
09 Feb 35 Normal near predicted monthly values/depressed
5 to 10%
10 Feb 20 Normal near predicted monthly values/depressed
10 to 15%
11 Feb 10 Normal about 20% below predicted monthly
values
COMMENT: The regional ionosphere was mostly near average levels
at mid latitudes, recovered from the geomagnetic disturbance,
and enhanced at northern latitude daytime.Near equatorial stations
were highly variable with large enhancements, still the after-effect
of the weekend geomagnetic disturbance. The mid-latitude ionosphere
has recovered from the geomagnetic activity induced depression.
Recovery has been helped by increased EUV ionising radiation
from AR1153 and several new small regions. Sporadic-E occurred
across the region and this is likely to continue. MUFs may be
slightly suppressed on the 10-11th Feb (UT) as a weak recurrent
coronal hole increases geomagnetic activity.
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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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