[Ips-dhfpr] IPS Daily HF Prop Report - 27 June 03
rwc
rwc at ips.gov.au
Sat Jun 28 08:19:49 EST 2003
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 27/2330Z JUNE 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (27 JUNE)
Date T index Conditions
27 Jun 92 Normal-fair
Flares: none.
MUFs:
Equatorial PNG Region:
Enhanced by 15% during local day,
Enhanced by 40% during local night.
Northern Australian Region:
Mostly near predicted monthly values,
Depressed by 40% after local dawn.
Southern Australian and New Zealand Region:
Enhanced by 15% during local day,
Enhanced by 15% during local night.
Spread F observed local night hours.
Antarctic Region (Casey/Scott Base):
Enhanced by 15% over the UT day.
Some spreead F observed.
PCA Event : No event.
Predicted Monthly T index for June: 68
2. FORECAST (28 JUNE - 30 JUNE)
Date T index Conditions MUFs
28 Jun 80 Normal near predicted monthly values (north Aus)
28 Jun 60 Fair depressed 10 to 15%, then normal (south Aus/NZ)
29 Jun 70 Fair/Normal depressed 10 to 15%/near predicted
monthly values
30 Jun 70 Fair/Normal depressed 10 to 15%/near predicted
monthly values
COMMENT: IPS HF Communications Warning 50 was issued on 26 June
and is current for interval 27-29 June. Degraded HF comms quality
observed local night hours at some southern region sites last
night. Mild depressions possible after local dawn this morning
southern Aus/NZ region. A generally degraded interval is over
the next few days for southern Aus/NZ region due to solar coronal
hole high speed wind stream. Northern Aus region MUFs expected
to again be near to 15% above predicted monthly values. Also,
shortwave fadeout activity may increase over next few days, due
to likelyhood of previously active solar region rotating onto
solar disk.
IPS Radio and Space Services | email: asfc at ips.gov.au
PO Box 1386 | WWW: http://www.ips.gov.au
Haymarket NSW 1240 AUSTRALIA | FTP: ftp://ftp.ips.gov.au
tel: +61 2 9213 8010 | fax: +61 2 9213 8060
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