[Ips-dhfpr] IPS Daily HF Prop Report - 05 April 01
rwc at ips.gov.au
Fri Apr 6 09:33:59 EST 2001
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 05/2330Z APRIL 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (05 APRIL)
Date T index Conditions
05 Apr 168 Normal
Flares Max Fadeout Freq. Sectors
M3.1 0226UT possible lower E. Asia/Aust.
M1.2 0834UT possible lower Mid East/Indian
M8.4 0924UT probable lower Mid East/Indian
M5.1 1727UT possible lower South American/
Equatorial PNG Region:
Mostly near predicted monthly values,
Northern Australian Region:
Enhanced by 15% during local day,
Enhanced by 35% during local night.
Southern Australian and New Zealand Region:
Enhanced by 20% during local day,
Enhanced by 20% during local night.
Enhanced by 40% after local dawn.
Antarctic Region (Casey/Scott Base):
Enhanced by 15% over the UT day.
Predicted Monthly T index for April: 120
2. FORECAST (06 APRIL - 08 APRIL)
Date T index Conditions MUFs
06 Apr 160 Normal 10 to 20% above predicted monthly
07 Apr 160 Normal 10 to 20% above predicted monthly
08 Apr 160 Normal 10 to 20% above predicted monthly
COMMENT: IPS HF Communications Warning 19 was issued on 5 April
and is current for interval 6-8 April (SWFs) . Shortwave fadeouts
expected on daylight HF circuits. Polar region HF comms still
affected by PCA with proton fluxes still above event threshold.
Depressed conditions for 5 April did not eventuate as the anticipated
shock from region 9415 CME on 3 April did not hit.
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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