[Ips-whfpr] ASWFC Weekly Prop. Report (12 April 23) issued 0053 UT on 12 Apr 2023 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY HF PROPAGATION REPORT
ISSUED ON 12 APRIL 2023 
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (05 APRIL - 11 APRIL)
Date   T index   Conditions        
05 Apr  130      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 45-60% 
   Niue Island Region:
      Enhanced by 20-30% 
   Northern Australian Region:
      Enhanced by 25-40% 
   Southern Australian Region:
      Enhanced 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.

06 Apr  124      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 15-35%.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 25-30%.
   Northern Australian Region:
      Enhanced by 20-25%.
   Southern Australian Region:
      Enhanced by 20% 
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.
      

07 Apr  122      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 15-30%
   Niue Island Region:
      Enhanced by 15-30% 
   Northern Australian Region:
      Enhanced by 20-35% 
   Southern Australian Region:
      Enhanced by 20%
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

08 Apr  125      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 30-45% 
   Niue Island Region:
      Enhanced by 20-25% 
   Northern Australian Region:
      Enhanced by 15-25% .
   Southern Australian Region:
      Enhanced by 20-25% 
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

09 Apr  122      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 45-65% 
   Niue Island Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      Enhanced by 15-30% 
   Southern Australian Region:
      Enhanced by 15-25% 
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

10 Apr  132      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 20-35%. 
   Niue Island Region:
      Enhanced by 25-40% 
   Northern Australian Region:
      Enhanced by 15-35%.
   Southern Australian Region:
      Enhanced by 20-25%.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

11 Apr  119      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 40-80% during local day.
   Niue Island Region:
      Enhanced by 15% 
   Northern Australian Region:
      Enhanced by 15-60% 
   Southern Australian Region:
      Enhanced by 15-25% 
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

Predicted Monthly T index for April:  84

Comment: generally good HF conditions with enhanced MUFs
and a relatively quiet Australian regional geomagnetic field during 
the past week.

2. FORECAST (12 APRIL - 18 APRIL) 
MUFS: possibly briefly depressed after local dawn on 12-13 Apr for
southern region Australia only. MUFs generally near predicted monthly 
values to 15% enhanced on other days.

Propagation conditions: Fair local night hours for southern 
region Australia during 12-13 Apr. Otherwise normal. 
SWFs probable during the week.

T index: 84
ASWFC SWF HF Communications Warning 35 was issued on 10 April 
and is current for 10-12 Apr.

3. OUTLOOK (19 APRIL - 19 MAY)
Degraded HF propagation conditions possible:
7-8 May,  15 May

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
https://www.sws.bom.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

Australian Space Weather Forecasting Centre
Bureau of Meteorology
ASWFC at bom.gov.au
www.bom.gov.au | www.sws.bom.gov.au