[Ips-dhfpr] IPS Daily HF Prop Report - 10 February 11
rwc
rwc at ips.gov.au
Fri Feb 11 10:32:38 EST 2011
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 10/2330Z FEBRUARY 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (10 FEBRUARY)
Date T index Conditions
10 Feb 38 Normal
Flares: none.
MUFs:
Cocos Island Region:
Near predicted monthly values during local day,
Niue Island Region:
Near predicted monthly values during local day,
Enhanced by 15% during local night.
Northern Australian Region:
Mostly near predicted monthly values,
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 (11 FEBRUARY - 13 FEBRUARY)
Date T index Conditions MUFs
11 Feb 20 Normal near predicted monthly values/depressed
10 to 20%
12 Feb 20 Normal near predicted monthly values/depressed
10 to 20%
13 Feb 35 Normal Near predicted monthly values
COMMENT: The regional ionosphere was mostly near average levels
at mid latitudes. Near equatorial stations were less variable
than the last few days since the weekend geomagnetic disturbance.
MUF levels were assisted by increased EUV ionising radiation
from AR1153 which has now rotated off the disc. The two remaining
regions are not as active and ionisation will decrease. MUFs
may also be slightly suppressed on the 11-12th Feb (UT) due to
a small recurrent coronal hole increasing geomagnetic activity.
The solar wind speed increase is occurring but the magnetic field
is not responding significantly yet, possilby muting the ionospheric
response.
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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.
IPS Radio and Space Services email: asfc at ips.gov.au
PO Box 1386 WWW: http://www.ips.gov.au
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