[Ips-dhfpr] ASWFC Daily HF Prop Report - 20 March 24 issued 2331 UT on 20 Mar 2024 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/20 MARCH 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (20 MARCH) 
Date   T index  Conditions    
20 Mar   133    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M2.1 19/2327UT  possible   lower  West Pacific
  M7.4    0736UT  probable   lower  Mid East/Indian
  M2.0    2255UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 45% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 15% during local night.
      Enhanced by 25% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 15% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Feb      138
Mar      111
Apr      112


2. FORECAST (21 MARCH - 23 MARCH)
Date   T index  Conditions       MUFs                              
21 Mar   135    Normal           Near to 15% above predicted 
                                 monthly values
22 Mar   135    Normal           Near to 15% above predicted 
                                 monthly values    
23 Mar   135    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 28 was issued on 
20 March and is current for 20-22 Mar. Maximum usable frequencies 
(MUFs) in the Australian region on UT day 20-Mar were near predicted 
monthly values in the northern Australian region and enhanced 
by up to 25% in the southern Australian region, with the strongest 
enhancements visible at the end of the UT day. MUFs are expected 
to be near predicted monthly values to 15% enhanced over 21-23 
Mar. Shortwave fadeouts are probable.

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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