[Ips-dhfpr] IPS Daily HF Prop Report - 09 May 03
rwc
rwc at ips.gov.au
Sat May 10 08:36:41 EST 2003
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 09/2330Z MAY 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (09 MAY)
Date T index Conditions
09 May 63 Normal-fair
Flares: none.
MUFs:
Equatorial PNG Region:
Near predicted monthly values during local day,
Depressed by 15% during local night.
Northern Australian Region:
Near predicted monthly values.
Southern Australian and New Zealand Region:
15% depressed.
Antarctic Region (Casey/Scott Base):
15% depressed to near normal.
Spread F observed.
PCA Event : No event.
Predicted Monthly T index for May: 72
2. FORECAST (10 MAY - 12 MAY)
Date T index Conditions MUFs
10 May 35 Fair depressed 10 to 20% (southern Aus region)
10 May 70 Normal near predicted monthly values (North Aus region)
11 May 75 Normal-Fair Near predicted monthly values
12 May 60 Fair near predicted monthly values/depressed 10 to 15%
COMMENT: IPS HF Communications Warning 35 was issued on 9 May
and is current for interval 10 May only. Southern Aus/NZ region
MUFs again depressed 15% yesterday. Degraded HF conditions local
night due to unexpected geomagnetic activity following shock/impulse
arrival. Further depressions probable southern region after local
dawn this morning. Northern Aus region MUFs again appear unaffected.
HF conditions may briefly improve later today, before returning
degraded due to second arm of coronal hole high speed wind stream.
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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