[Ips-dhfpr] ASWFC Daily HF Prop Report - 21 February 25 issued 2330 UT on 21 Feb 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/21 FEBRUARY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (21 FEBRUARY) 
Date   T index  Conditions    
21 Feb   154    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M3.3    1215UT  possible   lower  European
  M1.4    1435UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Mostly near predicted monthly values.
   Niue Island Region:
      Enhanced by 30% during local day.
      Enhanced by 35% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jan      124
Feb      118
Mar      115


2. FORECAST (22 FEBRUARY - 24 FEBRUARY)
Date   T index  Conditions       MUFs                              
22 Feb   150    Normal           Near to 15% above predicted 
                                 monthly values
23 Feb   150    Normal           Near to 15% above predicted 
                                 monthly values    
24 Feb   150    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 21-Feb in 
the Australian region were near predicted monthly values, with 
enhancements of up to 25% observed in the northern Australian 
region. Mild spread F was observed during local night hours at 
Hobart. MUFs are expected to be near predicted monthly values 
to 15% enhanced over 22-24 Feb.

----------------------------------------------------------
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