[Ips-dhfpr] IPS Daily HF Prop Report - 21 December 15 issued 2330 UT on 21 Dec 2015 [SEC=UNCLASSIFIED]
Regional Warning Centre
rwc at ips.gov.au
Tue Dec 22 10:30:38 EST 2015
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/21 DECEMBER 2015 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (21 DECEMBER)
Date T index Conditions
21 Dec -20 Poor
Flares Max Fadeout Freq. Sectors
M2.7 0104UT possible lower West Pacific
M1.0 1020UT possible lower European
Cocos Island Region:
Depressed by 45% through the day
Niue Island Region:
Depressed by 15% during local day.
Near predicted monthly values during local night.
Enhanced by 35% after local dawn.
Northern Australian Region:
Depressed by 55% during local day.
No data available during local night.
Southern Australian Region:
Depressed by 40% during local day.
Depressed by 30% at other times
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Depressed by 15% over the UT day.
PCA Event : No event.
Monthly T index:
Month T index
2. FORECAST (22 DECEMBER - 24 DECEMBER)
Date T index Conditions MUFs
22 Dec 30 Poor-fair 15 to 20% below predicted monthly
23 Dec 50 Normal-fair Near predicted monthly values
24 Dec 60 Normal Near predicted monthly values
COMMENT: Observed MUF's for the UT day 21 Dec were about 80 points
below the predicted monthly values. There is a chance of isolated
shortwave fadeouts for the next two days due to flaring potential
from active sunspot regions (Region 2472 and 2473). Strong geomagnetic
activity during the last 24 hours has caused this MUF degradation.
Depressed MUF conditions are expected to last for few days (22-23
Dec) and then gradually return to near monthly predicted values.
For an explanation of some of the terms in this report, go to
http://www.sws.bom.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.
Space Weather Services email: asfc at ips.gov.au
Bureau of Meteorology
PO Box 1386 WWW: http://www.sws.bom.gov.au
Haymarket NSW 1240 AUSTRALIA FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010 fax: +61 2 9213 8060
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