[Ips-dhfpr] ASWFC Daily HF Prop Report - 31 March 23 issued 2331 UT on 31 Mar 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/31 MARCH 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (31 MARCH) 
Date   T index  Conditions    
31 Mar   121    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 20-40% 
   Niue Island Region:
      Enhanced by 35-65%.
   Northern Australian Region:
      Enhanced by 25-35%.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
      Enhanced by 25% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 20% over the UT day, with frequent 
      absorption observed at Mawson.

PCA Event : No event.

Monthly T index:
Month  T index
Feb      117
Mar      80
Apr      80


2. FORECAST (01 APRIL - 03 APRIL)
Date   T index  Conditions       MUFs                              
01 Apr   115    Normal           Near to 15% above predicted 
                                 monthly values
02 Apr   115    Normal           Near to 15% above predicted 
                                 monthly values    
03 Apr   115    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 31-Mar in 
the Australian region were enhanced by 20-65%. Mild depressions 
of 15% were observed at Hobart and Canberra during the local 
day. Strong spread F was observed at Hobart during local night 
hours. Brief spread F was observed at Perth just before local 
dawn. Strongly enhanced conditions were observed at Niue. MUFs 
are expected to be near predicted monthly values to 15% enhanced.

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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