[Ips-dhfpr] IPS Daily HF Prop Report - 12 April 01
rwc
rwc at ips.gov.au
Fri Apr 13 09:14:20 EST 2001
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 12/2330Z APRIL 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (12 APRIL)
Date T index Conditions
12 Apr 70 Normal-fair
Flares Max Fadeout Freq. Sectors
X2/-- 1028UT probable all European
M1/1N 0304UT possible lower E. Asia/Aust.
MUFs:
Equatorial PNG Region:
Near predicted monthly values.
Northern Australian Region:
Near predicted monthly values.
Southern Australian and New Zealand Region:
Depressed by 45% during local day,
Depressed by 15% during local night.
Antarctic Region (Casey/Scott Base):
PCA.
Predicted Monthly T index for April: 120
2. FORECAST (13 APRIL - 15 APRIL)
Date T index Conditions MUFs
13 Apr 90 Fair about 10% below predicted monthly
values
14 Apr 90 Fair about 15% below predicted monthly
values
15 Apr 70 Fair 10 to 30% below predicted monthly
values
COMMENT: IPS HF Communications Warning 24 was issued on 12 April
and is current for interval 14-16 April. Shortwave fadeouts expected
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 affecting high-latitude HF comms. Further 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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