[Ips-whfpr] IPS Weekly Prop. Report (25 June 14) issued 0123 UT on 25 Jun 2014

Wed Jun 25 11:23:12 EST 2014

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED ON 25 JUNE 2014 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 JUNE - 24 JUNE)
Date   T index   Conditions        
18 Jun   78      Fair-normal       
MUFS:
   Cocos Island Region:
      Near predicted monthly values to 15% depressed.
      Depressed 35-45% 13-18, 22-23 UT. Spread F 15-21
      UT.
   Niue Island Region:
      Near predicted monthly values to 15% depressed.
      Depressed 15-25% 01-02, 08-09, 13-14, 21-22 UT.
   Northern Australian Region:
      Near predicted monthly values to 15% depressed.
      Depressed 20-40% at Darwin 13-16, 21 UT. Night
      spread F observed at both stations.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values. Depressed
      20-25% at Hobart 19-23 UT. Spread F observed at
      Hobart during night hours.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 30% depressed.
      Sporadic E 07-18 UT at Macquarie Island.

19 Jun   76      Fair-normal       
MUFS:
   Cocos Island Region:
      Near predicted monthly values. Depressed
      20-25% 00-01, 21-23 UT, depressed 20-40%
      12-18 UT.
   Niue Island Region:
      Mostly 15-30% depressed.
   Northern Australian Region:
      Near predicted monthly values. Depressed at
      Darwin 20-45% 00, 10-16 UT with night spread
      F. Depressed at Townsville 20-30% 00, 10-14 UT.
   Southern Australian and New Zealand Region:
      Near predicted monthly values to 15% depressed.
      Spread F at Hobart 08-23 UT. Occasional night
      spread F at Brisbane and Norfolk Is.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Mostly 10-30% depressed.

20 Jun   63      Fair-normal       
MUFS:
   Cocos Island Region:
      Near predicted monthly values. Depressions
      20-35% 01, 13-19, 21-22 UT.
   Niue Island Region:
      Depressed 20-30% 00-01, 06-09, 11-12, 16,
      22-23 UT. Depressed 50% 15 UT. Otherwise near
      predicted monthly values. Spread F 10-13, 15 UT.
   Northern Australian Region:
      Near predicted monthly values. Depressed 20-30% 
      00-01, 11, 15-18 21 UT, depressed 30-35% 12-14 UT
      at Darwin. Depressed 20-30% 11-13, 22 UT at Townsville.
      Some spread F 13-20 UT.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Some depressions to 25%
      during night, particularly at Hobart. Spread F observed
      at all eastern stations during night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Mostly near predicted monthly values to 20% depressed.

21 Jun   64      Fair-normal       
MUFS:
   Cocos Island Region:
      Enhanced 25-50% 08-12 UT. Depressed 20-40%
      03, 05, 13-18, 21-23 UT. Near predicted monthly
      values at other times.
   Niue Island Region:
      Depressed 25-45% 04-05, 07-12, 16 UT. Near
      predicted monthly values to 20% depressed at
      other times.
   Northern Australian Region:
      Near predicted monthly values to 20% depressed.
      Depressed 25-45% at Darwin 11-18, 21 UT. Depressed
      20-30% at Townsville 02, 07-17 UT. Night spread F
      at times 14-21 UT.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values to 15% depressed.
      Depressed 20-30% 00-02, 07-10 UT. Night spread F 09-20
      UT at some eastern stations.
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 20% depressed 00-13 UT.
      Depressions 20-35% and weaker ionosphere after 13 UT.

22 Jun   47      Fair-normal       
MUFS:
   Cocos Island Region:
      Enhanced 25-40% 07-10 UT. Depressed 20-45%
      00, 11-19 UT. No data 20-23 UT. Near predicted
      monthly values at other times. Spread F 17-19 UT.
   Niue Island Region:
      Depressed 20-40% 02-04, 06-15, 21-22 UT. Near
      predicted monthly values at other times.
   Northern Australian Region:
      Mostly depressed 15-40% at Darwin. Near predicted
      monthly values, depressed 20-30% 06, 10-13, 21, 23
      UT at Townsville. Spread F 12-20 UT at both stations.
      Sporadic E at Townsville 05-10 UT.
   Southern Australian and New Zealand Region:
      Near predicted monthly values to 20% depressed.
      Depressions 20-30% at times mostly 08-12 UT. Night
      spread F observed.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 30% depressed.

23 Jun   45      Fair-normal       
MUFS:
   Cocos Island Region:
      No data available. 
   Niue Island Region:
      Depressed by 25% during local day.
      Depressed by 35% during local night.
    Northern Australian Region:
      Depressed by 25% during local day.
      Depressed by 45% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 25% during local day.
      Depressed by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 25% depressed.

24 Jun   45      Fair-normal       
MUFS:
   Cocos Island Region:
      Depressed by 20% during local day.
      Depressed by 20% during local night.
      Depressed by 25% after local dawn.
   Niue Island Region:
      Depressed by 20% during local day.
      Depressed by 30% during local night.
      Depressed by 25% after local dawn.
   Northern Australian Region:
      Depressed by 30% during local day.
      Depressed by 40% during local night.
      Depressed by 20% after local dawn.
   Southern Australian and New Zealand Region:
      Depressed by 25% during local day.
      Depressed by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

Predicted Monthly T index for June:  92

2. FORECAST (25 JUNE - 01 JULY) 
MUFS: MUFs depressed by between 20%-40% due to lower than expected ionising 
EUV solar flux.

Propagation conditions: Normal. No SWFs.

T index: 50
IPS HF Communications Warning 31 was issued on 22 June and is 
current for 23-25 Jun.

3. OUTLOOK (02 JULY - 01 AUGUST)
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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