[Ips-dhfpr] ASWFC Daily HF Prop Report - 02 February 25 issued 2333 UT on 02 Feb 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/02 FEBRUARY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (02 FEBRUARY) 
Date   T index  Conditions    
02 Feb   111    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
  M3.0    1012UT  possible   lower  European
  M1.4    1250UT  possible   lower  European
  M5.1    1404UT  possible   lower  South American/
                                    Atlantic
  M1.2    1513UT  possible   lower  South American/
                                    Atlantic
  M2.7    1533UT  possible   lower  South American/
                                    Atlantic
  M4.1    2324UT  possible   lower  West Pacific

MUFs:
   Cocos Island Region:
      Enhanced by 35% during local day.
      Enhanced by 50% during local night.
   Niue Island Region:
      Mostly near predicted monthly values.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
      Depressed by 20% after local dawn.
   Southern Australian Region:
      Depressed by 15% during local day.
      Depressed by 15% during local night.
      Depressed by 25% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 15% over the UT day.

PCA Event : No event.

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


2. FORECAST (03 FEBRUARY - 05 FEBRUARY)
Date   T index  Conditions       MUFs                              
03 Feb    85    Normal-fair      15 to 20% below predicted monthly 
                                 values
04 Feb   110    Normal           Near predicted monthly values    
05 Feb   110    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 14 was issued on 
31 January and is current for 1-3 Feb. ASWFC HF Communications 
Warning 15 was issued on 2 February and is current for 2-3 Feb. 
Maximum usable frequencies (MUFs) in the Australian region were 
near predicted monthly values to 15% depressed on UT day 02-Feb. 
Mild spread-F was observed at Hobart during local night hours. 
MUFs are expected to be 15-20% depressed on 03-Feb, then recover 
to near predicted monthly values over 04-05 Feb. Shortwave 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