[Ips-whfpr] IPS Weekly Prop. Report (26 June 13) issued 0001 UT on 26 Jun 2013

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED ON 26 JUNE 2013 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (19 JUNE - 25 JUNE)
Date   T index   Conditions        
19 Jun   72      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 15% during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   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.

20 Jun   83      Normal            
MUFS:
   Cocos Island Region:
      5% to 20% above predicted monthly values during local day.
      Depressed by 20% during local night.
   Niue Island Region:
      10% to 30% above predicted monthly values during local day.
   Northern Australian Region:
      10 to 20% above predicted monthly values.
   Southern Australian and New Zealand Region:
      10 to 20% above predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

21 Jun   86      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 40% during local day.
      Depressed by 20% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   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.

22 Jun   86      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

23 Jun   76      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 40% during local day.
      Depressed by 25% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   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.

24 Jun   80      Normal            
MUFS:
   Cocos Island Region:
      Enhanced 15-35% 01-10 UT. Near predicted monthly values
      to 15% depressed at other times.
   Niue Island Region:
      Near predicted monthly values with 15-25% depressions
      07-13, 15-17 UT. Enhancements to 30% at 20-21 UT.
   Northern Australian Region:
      Near predicted monthly values. Depressions 25-30% at Darwin
      16-18 UT. Spread F at Townsville 12-20 UT.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Enhancements to 25% mostly
      07-17 UT. Spread F 04-21 UT at Hobart.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values, weak ionosphere.

25 Jun   69      Normal-fair       
MUFS:
   Cocos Island Region:
      Enhanced 20-50% 03, 06-11 UT. Depressed 15-20% 13-15,
      17-18, 23 UT, depressed 30-40% 16, 19-21 UT. Near
      predicted monthly values at other times.
   Niue Island Region:
      Near predicted monthly values. Depressed 20-35% 07-10 UT
   Northern Australian Region:
      Near predicted monthly values. Depressed 25-40% 11-12,
      16-18 UT at Darwin. Also at Darwin, sporadic E 03-07 UT,
      obscuring the F region 03-04 UT and night spread F.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day.
      Depressed by 30% 09-21 UT at some stations. Night spread F at
      all stations. Evening and night sporadic E observed at times.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 25% depressed.

Predicted Monthly T index for June:  67

2. FORECAST (26 JUNE - 02 JULY) 
MUFS: Near predicted monthly values.

Propagation conditions: Mostly normal. Spread F may degrade
night communications.

T index: 67

IPS SWF HF Communications Warning 18 was issued on 24 June and 
is current for 26 Jun.

3. OUTLOOK (03 JULY - 02 AUGUST)
Degraded HF propagation conditions possible: None 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
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