[Ips-dhfpr] ASWFC Daily HF Prop Report - 26 December 24 issued 2330 UT on 26 Dec 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/26 DECEMBER 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (26 DECEMBER) 
Date   T index  Conditions    
26 Dec   151    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
  M3.0    0030UT  possible   lower  West Pacific
  M7.3    0315UT  probable   lower  E. Asia/Aust.

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Enhanced by 55% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Nov      127
Dec      117
Jan      114


2. FORECAST (27 DECEMBER - 29 DECEMBER)
Date   T index  Conditions       MUFs                              
27 Dec   150    Normal           Near to 15% above predicted 
                                 monthly values
28 Dec   150    Normal           Near to 15% above predicted 
                                 monthly values    
29 Dec   150    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 26-Dec were near predicted values to 20% enhanced 
during local night, with stronger enhancements in the southern 
Australian region. Sporadic-E was observed during local night 
hours at Hobart, Canberra, Perth and Brisbane. MUFs are expected 
to be near predicted monthly values to 15% enhanced on 27-29 
Dec. Shortwave fadeouts are probable.

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