[Ips-dhfpr] ASWFC Daily HF Prop Report - 28 March 26 issued 2331 UT on 28 Mar 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/28 MARCH 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (28 MARCH) 
Date   T index  Conditions    
28 Mar    94    Fair-normal    

Flares    Max     Fadeout    Freq.  Sectors
  M1.3    0418UT  possible   lower  E. Asia/Aust.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Niue Island Region:
      Enhanced by 45% during local day.
      Enhanced by 25% during local night.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 15% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Feb      98
Mar      87
Apr      85


2. FORECAST (29 MARCH - 31 MARCH)
Date   T index  Conditions       MUFs                              
29 Mar    90    Normal-fair      Near predicted monthly values
30 Mar    80    Fair             Depressed 10 to 15%/near predicted 
                                 monthly values    
31 Mar    75    Fair-normal      Depressed 10 to 15%/near predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 28-Mar were generally near predicted values 
to 15% enhanced. 15% depressions were observed at times at Hobart 
during the local day. Southern Australian region MUFs were 15% 
depressed after local dawn this morning. Spread F was observed 
at Hobart during the local night. MUFs are expected to be near 
predicted monthly values for 29-Mar and 15% depressed to near 
predicted monthly values during 30-31 Mar in association with 
mild geomagnetic activity associated with a coronal hole wind 
stream. Isolated minor 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