[Ips-dhfpr] IPS Daily HF Prop Report - 18 November 03
rwc
rwc at ips.gov.au
Wed Nov 19 10:57:35 EST 2003
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 18/2330Z NOVEMBER 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (18 NOVEMBER)
Date T index Conditions
18 Nov 53 Fair-normal
Flares Max Fadeout Freq. Sectors
M3/2N 0752UT possible lower Mid East/Indian
M4/-- 1011UT possible lower European
MUFs:
Equatorial PNG Region:
Enhanced by 15% during local day,
Enhanced by 20% during local night.
Northern Australian Region:
Near predicted monthly values during local day,
Enhanced by 30% during local night.
Southern Australian and New Zealand Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base):
Near predicted monthly values over the UT day,
with extended local periods of disturbance.
PCA Event : No event.
Predicted Monthly T index for November: 52
2. FORECAST (19 NOVEMBER - 21 NOVEMBER)
Date T index Conditions MUFs
19 Nov 50 Fair near predicted monthly values/depressed
5 to 10%
20 Nov 35 Poor about 20% below predicted monthly
values
21 Nov 50 Fair depressed 10 to 20%/near predicted
monthly values
COMMENT: IPS HF Communications Warning 88 was issued on 18 November
and is current for interval 19-21 November (SWFs) . Generally
improving HF conditions observed at all latitudes as geomagnetic
disturbance due to coronal hole wind stream subsides. Expect
continuing periods of disturbance at high latitudes today. There
is a good possibility of degraded conditions on day two due to
anticipated geomagnetic disturbance associated with a full halo
CME observed early today.
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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