[Ips-dhfpr] ASWFC Daily HF Prop Report - 24 April 26 issued 2331 UT on 24 Apr 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/24 APRIL 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (24 APRIL) 
Date   T index  Conditions    
24 Apr    60    Fair           

Flares    Max     Fadeout    Freq.  Sectors
  X2.4    0107UT  probable   all    West Pacific
  X2.5    0813UT  probable   all    Mid East/Indian
  M2.0    0907UT  possible   lower  Mid East/Indian
  M1.7    1301UT  possible   lower  European
  M6.4    1815UT  probable   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Northern Australian Region:
      Depressed by 15% during local day.
      Depressed by 25% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 20% 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      92
Apr      83
May      81


2. FORECAST (25 APRIL - 27 APRIL)
Date   T index  Conditions       MUFs                              
25 Apr    70    Normal           Near predicted monthly values
26 Apr    60    Fair             Depressed 15%/near predicted 
                                 monthly values    
27 Apr    60    Normal           Depressed 15%/near predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 41 was issued on 
24 April and is current for 24-25 Apr. Maximum Usable Frequencies 
(MUFs) in the Australian region were 15-25% depressed on UT day 
24-Apr. Spread-F was observed at Townsville. MUFs are expected 
to be near monthly predicted values on 25-Apr, with depressions 
likely over 26-27 Apr due to forecast geomagnetic activity. 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