[Ips-dhfpr] IPS Daily HF Prop Report - 15 April 01
rwc at ips.gov.au
Mon Apr 16 09:48:33 EST 2001
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 15/2330Z APRIL 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (15 APRIL)
Date T index Conditions
15 Apr 119 Normal
Flares Max Fadeout Freq. Sectors
X14/2B 1350UT probable all European
Polar regions HF comms affected by proton event which beagn 1405UT on
15Apr following X14 flare.
Equatorial PNG Region:
Enhanced by 15% during local day,
Near predicted monthly values during local night.
Northern Australian Region:
Near predicted monthly values during local day,
Depressed by 15% 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.
Predicted Monthly T index for April: 120
2. FORECAST (16 APRIL - 18 APRIL)
Date T index Conditions MUFs
16 Apr 100 Normal Near predicted monthly values
17 Apr 110 Normal-Fair near predicted monthly values
18 Apr 85 Fair near predicted monthly values/depressed
10 to 20%
COMMENT: IPS HF Communications Warning 24 was issued on 12 April
and is current for interval 14-16 April. Degraded HF conditions
expected late on 18 April due to anticipated geomagnetic activity
from X14 flare. Effects are expected to be confined to mid to
high latitudes (southern Aus/NZ region).
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
More information about the ips-dhfpr