[Ips-dhfpr] IPS Daily HF Prop Report - 24 July 02
rwc
rwc at ips.gov.au
Thu Jul 25 09:30:01 EST 2002
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 24/2330Z JULY 2002 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (24 JULY)
Date T index Conditions
24 Jul 107 Normal-fair
Flares Max Fadeout Freq. Sectors
M1/1F 1555UT possible lower South American/
Atlantic
MUFs:
Equatorial PNG Region:
Near predicted monthly values during local day,
Enhanced by 85% during local night.
Enhanced by 15% after local dawn.
Northern Australian Region:
Near predicted monthly values.
Southern Australian and New Zealand Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base):
Proton event in progress, increased absorption observed.
PCA Event : 10Mev Proton/PCA Event Began 22 07 2002 0715UT and is in progress
Predicted Monthly T index for July: 108
2. FORECAST (25 JULY - 27 JULY)
Date T index Conditions MUFs
25 Jul 110 Normal-Poor near predicted monthly values
26 Jul 90 Fair-Normal depressed 5 to 10%/near predicted
monthly values
27 Jul 110 Normal Near predicted monthly values
COMMENT: IPS HF Communications Warning 33 was issued on 24 July
and is current for interval 25-26 July. Degarded HF condiions
expected to begin next 24 hours due to anticipated geomagnetic
storm onset. Degradations expected to be strongest during local
night hours. Only mild depressions after local dawn on 26th are
expected in Aus/NZ region due to seasonal factors.
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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