[Ips-whfpr] IPS Weekly Prop. Report (18 June 14) issued 2340 UT on 17 Jun 2014

rwc rwc at ips.gov.au
Wed Jun 18 09:40:22 EST 2014


SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED ON 18 JUNE 2014 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (11 JUNE - 17 JUNE)
Date   T index   Conditions        
11 Jun   80      Normal            
MUFS:
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

12 Jun   82      Normal            
MUFS:
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

13 Jun   74      Normal            
MUFS:
   Niue Island Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Depressed by 15% during local day.
      Depressed by 20% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

14 Jun   81      Normal            
MUFS:
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Depressed by 15% during local day.
      Depressed by 25% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

15 Jun   77      Normal            
MUFS:
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

16 Jun   69      Normal            
MUFS:
   Niue Island Region:
      Near predicted monthly values with 20-30%
      depressions 03-04, 08-11 and 22-23 UT.
   Northern Australian Region:
      Near predicted monthly values. Depressions
      of 15-35% at Darwin 07-17 and 21 UT and
      15-25% depressed at Townsville 06, 09-13 UT.
   Southern Australian and New Zealand Region:
      Near predicted monthly values to 15% depressed.
      Some deeper depressions to 25% mostly before
      15 UT. Enhanced 20-30% at Perth 17-22 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values with occasional
      depressions to 30%.

17 Jun   74      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values to 15% depressed
      00-13, 22 UT. Depressed 20-40% at other times.
   Niue Island Region:
      Near predicted monthly values to 15% depressed.
      Depressed by 25-30% 02, 07-13, 22 UT.
   Northern Australian Region:
      Near predicted monthly values. Depressed 35% at
      Darwin 20-21 UT. Depressed 15-20% at Townsville
      00-02, 05-08, 12-14, 21-23 UT.
   Southern Australian and New Zealand Region:
      Near predicted monthly values with occasional
      depressions to 20%. Night spread F at Hobart.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 20% enhanced.

Predicted Monthly T index for June:  92

2. FORECAST (18 JUNE - 24 JUNE) 
MUFS: MUFs near predicted monthly values to 20% depressed. Lower than
expected solar flux is likely to decrease MUFs below those based on the
monthly predicted T index, particularly on circuits with southern
hemisphere bases.

Propagation conditions: Fair to normal. Chance of SWFs early in week.

T index: 70
IPS HF Communications Warning 30 was issued on 17 June and is 
current for 17-19 Jun.

3. OUTLOOK (25 JUNE - 25 JULY)
Degraded HF propagation conditions possible:
No significant degraded periods expected.

PLEASE NOTE:
Space weather conditions can frequently be determined by short 
timescale events that cannot be forecast a week in advance,
particularly at solar maximum.

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
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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