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

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/24 APRIL 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (24 APRIL) 
Date   T index  Conditions    
24 Apr   147    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
  M1.7    0029UT  possible   lower  West Pacific
  M1.8    0239UT  possible   lower  E. Asia/Aust.
  M1.4    1214UT  possible   lower  European
  M1.1    2250UT  possible   lower  East Pacific/
                                    North American
  M2.0    2259UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Enhanced by 15% during local day.
      Enhanced by 55% during local night.
   Niue Island Region:
      Enhanced by 20% during local day.
      Enhanced by 70% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   Southern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Mar      120
Apr      114
May      115


2. FORECAST (25 APRIL - 27 APRIL)
Date   T index  Conditions       MUFs                              
25 Apr   140    Normal-fair      Near predicted monthly values
26 Apr   135    Normal-fair      Near predicted monthly values    
27 Apr   130    Normal-fair      Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region were near predicted values to 25% enhanced on UT day 24-Apr. 
Spread F was observed in Hobart and Perth during local night 
and dawn hours. Scintillation was observed at Darwin, Weipa and 
Niue between 24/0911-1350 UT. MUFs are expected to be near monthly 
predicted values over 25-27 Apr, although some mild depressions 
may be observed due to the oncoming coronal hole wind stream 
over this period.

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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