[Ips-dhfpr] IPS Daily HF Prop Report - 21 June 10
rwc
rwc at ips.gov.au
Tue Jun 22 09:03:10 EST 2010
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 21/2330Z JUNE 2010 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (21 JUNE)
Date T index Conditions
21 Jun 4 Normal
Flares: none.
MUFs:
Cocos Island Region:
Depressed by 25% during local day,
Near predicted monthly values during local night.
Niue Island Region:
Depressed by 15% during local day,
Depressed by 20% during local night.
Depressed by 20% after local dawn.
Northern Australian Region:
Depressed by 20% during local day,
Near predicted monthly values during local night.
Southern Australian and New Zealand Region:
Depressed by 15% during local day,
Near predicted monthly values during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
PCA Event : No event.
Predicted Monthly T index for June: 26
2. FORECAST (22 JUNE - 24 JUNE)
Date T index Conditions MUFs
22 Jun 10 Normal depressed 10 to 20%/near predicted
monthly values
23 Jun 10 Normal depressed 10 to 20%/near predicted
monthly values
24 Jun 10 Normal depressed 10 to 20%/near predicted
monthly values
COMMENT: IPS HF Communications Warning 14 was issued on 21 June
and is current for interval 21-22 June. Depressed MUFs observed
for Northern AUS/Equatorial during the UT day and Southern AUS/NZ
regions during local day. Ionospehric support expected to be
below monthly averages across all regions due to reduced EUV
ionisation/weak sunspot activity for the next 3 days, with MUF
depressions of 10%-20% for low to mid latitudes. Noted isolated
cases of sporadic E in the Australian region.
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For an explanation of some of the terms in this report, go to
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.
IPS Radio and Space Services email: asfc at ips.gov.au
PO Box 1386 WWW: http://www.ips.gov.au
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