[Ips-dhfpr] IPS Daily HF Prop Report - 13 April 01
rwc
rwc at ips.gov.au
Sat Apr 14 09:19:27 EST 2001
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 13/2330Z APRIL 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (13 APRIL)
Date T index Conditions
13 Apr 134 Normal-fair
Flares: none.
MUFs:
Equatorial PNG Region:
Near predicted monthly values during local day,
Depressed by 15% during local night.
Northern Australian Region:
Near predicted monthly values during local day,
Enhanced by 20% during local night.
Enhanced by 15% after local dawn.
Southern Australian and New Zealand Region:
Mostly near predicted monthly values,
Depressed by 35% after local dawn.
Antarctic Region (Casey/Scott Base):
Enhanced 15% to depressed 15% and absorption over the UT day.
Predicted Monthly T index for April: 120
2. FORECAST (14 APRIL - 16 APRIL)
Date T index Conditions MUFs
14 Apr 60 Fair 5 to 30% below predicted monthly
values
15 Apr 70 Fair 5 to 20% below predicted monthly
values
16 Apr 100 Normal Near predicted monthly values
COMMENT: IPS HF Communications Warning 24 was issued on 12 April
and is current for interval 14-16 April. Shortwave fadeouts possible
on daylight HF circuits. Enhanced proton fluxes associated with
both M7.9 and X2.3 flares from region 9415 on 9 Apr and 10 Apr
are subsiding. Degraded propagation conditions are expected due
to favorably located CME's associated with flares M2.3 1326UT/11
and an X2.0 1028UT/12.
IPS Radio and Space Services | email: asfc at ips.gov.au
PO Box 1386 | WWW: http://www.ips.gov.au/asfc
Haymarket NSW 1240 AUSTRALIA | FTP: ftp://ftp.ips.gov.au/users/asfc/
tel: +61 2 9213 8010 | fax: +61 2 9213 8060
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