[Ips-dhfpr] IPS Daily HF Prop Report - 28 October 03
rwc at ips.gov.au
Wed Oct 29 10:15:15 EST 2003
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 28/2330Z OCTOBER 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (28 OCTOBER)
Date T index Conditions
28 Oct 88 Fair-normal
Flares Max Fadeout Freq. Sectors
X17/4B 1110UT probable all European
Equatorial PNG Region:
Enhanced by 25% during local day,
Near predicted monthly values during local night.
Northern Australian Region:
Enhanced by 15% during local day,
Enhanced by 25% during local night.
Southern Australian and New Zealand Region:
Near predicted monthly values during local day,
Enhanced by 20% during local night.
Antarctic Region (Casey/Scott Base):
Proton event in progress, increased absorption observed.
PCA Event : 10Mev Proton/PCA Event Began 28 10 2003 1215UT and is in progress
Predicted Monthly T index for October: 55
2. FORECAST (29 OCTOBER - 31 OCTOBER)
Date T index Conditions MUFs
29 Oct 70 Fair-poor enhanced 15 to 20%/depressed
20 to 40% late in UT day.
30 Oct 10 Poor-fair depressed 15 to 40%/near predicted
31 Oct 30 Fair-normal depressed 10 to 15%/near predicted
COMMENT: IPS HF Communications Warning 79 was issued on 28 October
and is current for interval 29-31 October (SWFs) . Expected ionospheric
depression for this morning has not eventuated due to weaker
than expected shock induced geomagnetic activity. However, a
strong degradation and depression is expected late 29 and 30
Oct due to anticpated geomagnetic activity from very large (X17)
flare/CME overnight. Frequent shortwave flares and fadeouts can be
expected on daylight HF circuits.
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
IMPORTANT: This e-mail, including any attachments, may contain,confidential
or copyright information. The views expressed in this message are those of
the individual sender, unless specifically stated to be the views of IPS.
If you are not the intended recipient, please contact the sender immediately
and delete all copies of this e-mail and attachments.
More information about the ips-dhfpr