[Ips-dhfpr] ASWFC Daily HF Prop Report - 24 March 25 issued 2330 UT on 24 Mar 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/24 MARCH 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (24 MARCH) 
Date   T index  Conditions    
24 Mar   148    Normal         

Flares: none.

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

PCA Event : No event.

Monthly T index:
Month  T index
Feb      127
Mar      117
Apr      114


2. FORECAST (25 MARCH - 27 MARCH)
Date   T index  Conditions       MUFs                              
25 Mar   155    Normal           Near predicted monthly values 
                                 to 15% enhanced
26 Mar   145    Normal-fair      Near predicted monthly values 
                                 to 15% enhanced    
27 Mar   135    Fair             Near predicted monthly values 
                                 to 20% depressed   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region were mostly enhanced by 15% on UT day 24-Mar. Spread-F 
was observed in Hobart during local night hours and sporadic-E 
was observed in Norfolk Island. The enhancements to the MUFs 
are expected to continue on 25-Mar, and possibly dampen on 26-Mar 
but may still be intermittent. MUFs may become depressed up to 
20% on UT day 27-Mar due to expected coronal hole activity.

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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