[Ips-dhfpr] ASWFC Daily HF Prop Report - 14 February 25 issued 2330 UT on 14 Feb 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/14 FEBRUARY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (14 FEBRUARY) 
Date   T index  Conditions    
14 Feb    78    Poor-fair      

Flares    Max     Fadeout    Freq.  Sectors
  M1.2    0228UT  possible   lower  E. Asia/Aust.
  M1.2    1007UT  possible   lower  European
  M1.8    2057UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Depressed by 15% during local day.
      Depressed by 20% during local night.
   Southern Australian Region:
      Depressed by 30% during local day.
      Depressed by 15% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 20% over the UT day.

PCA Event : No event.

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


2. FORECAST (15 FEBRUARY - 17 FEBRUARY)
Date   T index  Conditions       MUFs                              
15 Feb    90    Normal           Depressed 15%/near predicted 
                                 monthly values
16 Feb   100    Normal           Near predicted monthly values    
17 Feb   110    Normal           Near predicted monthly values   

COMMENT: ASWFC HF Communications Warning 22 was issued on 14 
February and is current for 14-15 Feb. Maximum usable frequencies 
(MUFs) on UT day 14-Feb in the Australian region were 15-30% 
depressed. Spread F was observed at Hobart. Sporadic E was observed 
at Brisbane, Hobart and Canberra. MUFs are expected to be near 
predicted monthly values to 15% depressed on 15-Feb. MUFs are 
expected to be near predicted monthly values over 16-17 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