[Ips-dhfpr] IPS Daily HF Prop Report - 04 April 01
rwc
rwc at ips.gov.au
Thu Apr 5 09:25:37 EST 2001
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 04/2330Z APRIL 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (04 APRIL)
Date T index Conditions
04 Apr 162 Normal
Flares Max Fadeout Freq. Sectors
M2/-- 1222UT possible lower European
M1/SF 03/2351UT possible lower West Pacific
M1/SF 1027UT possible lower European
M1/SF 1159UT possible lower European
MUFs:
Equatorial PNG Region:
Mostly near predicted monthly values,
Northern Australian Region:
Near predicted monthly values during local day,
Enhanced by 20% during local night.
Southern Australian and New Zealand Region:
Enhanced by 15% during local day,
Enhanced by 25% during local night.
Antarctic Region (Casey/Scott Base):
Enhanced by 45% over the UT day.
Predicted Monthly T index for April: 120
2. FORECAST (05 APRIL - 07 APRIL)
Date T index Conditions MUFs
05 Apr 120 Fair-normal depressed 10 to 20%/near predicted
monthly values
06 Apr 120 Normal-fair depressed 10 to 20%/near predicted
monthly values
07 Apr 150 Normal-fair Near predicted monthly values
COMMENT: IPS HF Communications Warning 18 was issued on 3 April
and is current for interval 4-6 April. Shortwave fadeouts expected
on daylight HF circuits. Lower than normal MUFs likely 05-06
April due to anticipated geomagnetic activity. Polar region HF
comms still affected by proton event in decline.
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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