[Ips-dhfpr] ASWFC Daily HF Prop Report - 28 February 25 issued 2330 UT on 28 Feb 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/28 FEBRUARY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (28 FEBRUARY) 
Date   T index  Conditions    
28 Feb   103    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Mostly near predicted monthly values.
      Enhanced by 25% after local dawn.
   Niue Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Mostly near predicted monthly values.
      Depressed by 25% after local dawn.
   Southern Australian Region:
      Mostly near predicted monthly values.
      Depressed by 30% 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 (01 MARCH - 03 MARCH)
Date   T index  Conditions       MUFs                              
01 Mar    60    Fair             20 to 30% below predicted monthly 
                                 values
02 Mar    80    Normal-fair      15 to 20% below predicted monthly 
                                 values    
03 Mar   110    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 26 was issued on 
28 February and is current for 28 Feb to 2 Mar. ASWFC HF Communications 
Warning 27 was issued on 28 February and is current for 1-2 Mar. 
Maximum usable frequencies (MUFs) on UT day 28-Feb in the Australian 
region were generally near predicted monthly values, though MUFs 
are 25-30% depressed after local dawn. Spread F was observed 
at Hobart. MUFs are expected to be 20-30% depressed on UT day 
01-Mar. MUFs are expected to be near predicted monthly values 
over 02-03 Mar, with 10-15% depressions possible on 02-Mar. 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