[Ips-whfpr] ASWFC Weekly Prop. Report (22 March 23) issued 0221 UT on 22 Mar 2023 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY HF PROPAGATION REPORT
ISSUED ON 22 MARCH 2023 
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (15 MARCH - 21 MARCH)
Date   T index   Conditions        
15 Mar  112      Fair              
MUFS:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Enhanced by 45% during local day.
      Enhanced by 90% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
      Enhanced by 25% after local dawn.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

16 Mar  136      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 35% during local day.
      Enhanced by 105% during local night.
   Niue Island Region:
      Enhanced by 20% during local day.
      Enhanced by 35% during local night.
   Northern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 20% during local night.
   Southern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 25% during local night.
      Enhanced by 40% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

17 Mar  137      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 55% during local night.
      Enhanced by 55% after local dawn.
   Niue Island Region:
      Enhanced by 25% during local day.
      Enhanced by 70% during local night.
   Northern Australian Region:
      Enhanced by 15-30%.
   Southern Australian Region:
      Enhanced by 25-35%.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

18 Mar  133      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
      Enhanced by 25% after local dawn.
   Niue Island Region:
      Enhanced by 35-70%.
   Northern Australian Region:
      Enhanced by 15-20% 
   Southern Australian Region:
      Enhanced by 25-30% 
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

19 Mar  146      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 35-80%.
   Niue Island Region:
      Enhanced by 20-35%.
   Northern Australian Region:
      Enhanced by 20-45%.
   Southern Australian Region:
      Enhanced by 25-40%.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

20 Mar  144      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Enhanced by 30% during local night.
      Enhanced by 40% after local dawn.
   Niue Island Region:
      Enhanced by 50% during local day.
      Enhanced by 65% during local night.
      Enhanced by 40% after local dawn.
   Northern Australian Region:
      Enhanced by 25% during local day.
      Enhanced by 40% during local night.
      Enhanced by 65% after local dawn.
   Southern Australian Region:
      Enhanced by 35% during local day.
      Enhanced by 20% during local night.
      Enhanced by 30% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

21 Mar  136      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 40% during local day.
      Enhanced by 65% during local night.
      Enhanced by 25% after local dawn.
   Niue Island Region:
      Enhanced by 25% during local day.
      Enhanced by 35% during local night.
   Northern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 30% during local night.
      Enhanced by 35% after local dawn.
   Southern Australian Region:
      Enhanced by 25% during local day.
      Enhanced by 25% during local night.
      Enhanced by 35% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

Predicted Monthly T index for March:  80

2. FORECAST (22 MARCH - 28 MARCH) 
MUFS: briefly depressed after local dawn over 23-24 Mar
MUFs near predicted monthly values on other days.

Propagation conditions: Fair over 23-24 Mar. Otherwise normal. SWFs possible
early in week.

T index: 80
ASWFC SWF HF Communications Warning 31 was issued on 20 March 
and is current for 20-22 Mar.

3. OUTLOOK (29 MARCH - 28 APRIL)
Degraded HF propagation conditions possible:
01-02 Apr, 11-Apr. 

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