[Ips-dhfpr] ASWFC Daily HF Prop Report - 14 March 23 issued 2330 UT on 14 Mar 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/14 MARCH 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (14 MARCH) 
Date   T index  Conditions    
14 Mar   163    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      No data available.
   Niue Island Region:
      Enhanced by 25-65% 
   Northern Australian Region:
      Enhanced by 30-55% 
   Southern Australian Region:
      Enhanced by 35-40% 
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 20% over the UT day.
      Proton event in progress, increased absorption observed at Mawson.

PCA Event : Increased absorption due to weak S1 events. The GOES
10MeV solar proton flux is repeatedly oscillating over the S1 threshold, 
with the latest event beginning at 14/1740UT and is currently in progress.


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


2. FORECAST (15 MARCH - 17 MARCH)
Date   T index  Conditions       MUFs                              
15 Mar   110    Normal-fair      Depressed to 10-15% to 20% enhanced.
16 Mar    90    Fair-normal      Depressed 15% to 20% enhanced.    
17 Mar   120    Normal           10 to 20% above predicted monthly 
                                 values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 14-Mar were 
25-65% enhanced in the Australian region. MUFs are expected to 
be 15-20% enhanced on 15-Mar for the northern region Australia. 
Southern region Australian may experience MUF depressions of 
10-15% early on 15-Mar, with further depressions possible on 
16-Mar if further mild geomagnetic activity eventuates over 15-16 
Mar. Ionospheric scintillation was observed 14/1031-1440UT at 
Darwin and Weipa and more briefly at Niue.

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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