[Ips-dhfpr] IPS Daily HF Prop Report - 15 May 05
rwc
rwc at ips.gov.au
Mon May 16 09:43:37 EST 2005
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 15/2330Z MAY 2005 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (15 MAY)
Date T index Conditions
15 May 51 Fair
Flares Max Fadeout Freq. Sectors
M3.5 2236UT confirmed lower West Pacific
MUFs:
Equatorial PNG Region:
Enhanced by 25% during local day,
Depressed by 20% during local night.
Northern Australian Region:
Near predicted monthly values during local day,
Enhanced by 35% during local night.
Southern Australian and New Zealand Region:
Near predicted monthly values during local day,
Enhanced by 25% during local night.
Antarctic Region (Casey/Scott Base):
Enhanced by 55% over the UT day.
PCA Event : Began at 0545UT 14/05, Ended at 1225UT 15/05
Predicted Monthly T index for May: 27
2. FORECAST (16 MAY - 18 MAY)
Date T index Conditions MUFs
16 May 20 Normal-Fair Depressed 15% after local dawn,
then recovering
17 May 20 Normal Depressed 15% after local dawn,
then recovering
18 May 35 Normal-Fair Near predicted monthly values
COMMENT: IPS HF Communications Warning 21 was issued on 14 May
and is current for interval 15-16 May. Degraded HF conditions
overnight. Australian regional ionosphere has not had a strong
storm response to overnight geomagnetic activity, probably due
to seasonal factors. Northern hemisphere ionosphere appears to
be more significantly impacted. Degraded conditions may be experieneced
for today, then improving. A return to degraded conditions may
be experienced on 19 May, following this morning presumed mass
ejection.
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For an explanation of some of the terms in this report, goto
http://www.ips.gov.au, and follow links to Educational->
Gloassary on Solar Terrestrial Terms.
IPS Radio and Space Services | email: asfc at ips.gov.au
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