[Ips-dhfpr] IPS Daily HF Prop Report - 12 December 03
rwc
rwc at ips.gov.au
Sat Dec 13 10:27:33 EST 2003
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 12/2330Z DECEMBER 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (12 DECEMBER)
Date T index Conditions
12 Dec 30 Fair
Flares: none.
MUFs:
Equatorial PNG Region:
Near predicted monthly values during local day,
Depressed by 30% during local night and after
local dawn.
Northern Australian Region:
Mostly near predicted monthly values,
Depressed 10-20% after local dawn.
Southern Australian and New Zealand Region:
Mostly near predicted monthly values,
Depressed by 20% after local dawn.
Antarctic Region (Casey/Scott Base):
Near predicted monthly values over the UT day,
with extended periods of disturbance.
PCA Event : No event.
Predicted Monthly T index for December: 50
2. FORECAST (13 DECEMBER - 15 DECEMBER)
Date T index Conditions MUFs
13 Dec 25 Fair depressed 10 to 20%/near predicted
monthly values
14 Dec 35 Normal-Fair depressed 10 to 20%/near predicted
monthly values
15 Dec 50 Normal Near predicted monthly values
COMMENT: IPS HF Communications Warning 96 was issued on 11 December
and is current for interval 12-13 December. Depressions observed
in all Aus/NZ regions overnight and around local dawn. Persistent
and occasionally intense sporadic-E layer observed in Equatorial/Aus
regions. Depressions observed today around local dawn at low
to mid latitudes are showing signs of recovery at report issue.
High latitudes can expect extended periods of disturbance for
the next few days. Coronal hole wind stream effects are expected
to gradually decline over this period.
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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