[Ips-dhfpr] ASWFC Daily HF Prop Report - 18 May 24 issued 2330 UT on 18 May 2024 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 MAY 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 MAY) 
Date   T index  Conditions    
18 May   156    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 20-55% over the UT day.
   Niue Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Enhanced by 20% over the UT day.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 20% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Apr      125
May      114
Jun      116


2. FORECAST (19 MAY - 21 MAY)
Date   T index  Conditions       MUFs                              
19 May   150    Normal           Near to 15% above predicted 
                                 monthly values
20 May   150    Normal           Near to 15% above predicted 
                                 monthly values    
21 May   150    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 18-May were 
near predicted monthly values to 20% enhanced in Northern Australia. 
Spread F was observed at Hobart and Canberra during local night 
hours. MUFs are expected to be near predicted monthly values 
to 15% enhanced over 19-21 May. Shortwave fadeouts are possible.

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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