[Ips-dhfpr] ASWFC Daily HF Prop Report - 11 March 25 issued 2330 UT on 11 Mar 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/11 MARCH 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (11 MARCH) 
Date   T index  Conditions    
11 Mar   104    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.1    1304UT  possible   lower  European

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Enhanced by 15% during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Southern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values 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 (12 MARCH - 14 MARCH)
Date   T index  Conditions       MUFs                              
12 Mar   110    Normal-fair      Near predicted monthly values 
                                 to 15% depressed
13 Mar   100    Normal-fair      Near predicted monthly values 
                                 to 20% depressed    
14 Mar    95    Normal-fair      Near predicted monthly values 
                                 to 20% depressed   

COMMENT: Maximum usable frequencies (MUFs) on UT day 11-Mar were 
near predicted monthly values to 15% depressed in the Australian 
region. Scintillation was observed at Weipa from 1140 UT to 1159 
UT. MUFs are expected to be near predicted values and up to 20% depressed 
over 12-14 Mar due to coronal hole activity. Spread-F may be 
present at local night hours in high latitudes.

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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