[Ips-dhfpr] ASWFC Daily HF Prop Report - 15 December 24 issued 2330 UT on 15 Dec 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/15 DECEMBER 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (15 DECEMBER) 
Date   T index  Conditions    
15 Dec   113    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M3.1    2024UT  possible   lower  East Pacific/
                                    North American

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

PCA Event : No event.

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


2. FORECAST (16 DECEMBER - 18 DECEMBER)
Date   T index  Conditions       MUFs                              
16 Dec   125    Normal           Near predicted monthly values 
                                 to 15% enhanced
17 Dec   135    Normal-fair      Near predicted monthly values 
                                 to 15% enhanced    
18 Dec   120    Normal-fair      Near predicted monthly values 
                                 to 15% depressed   

COMMENT: ASWFC SWF HF Communications Warning 144 was issued on 
15 December and is current for 15-17 Dec. Maximum usable frequencies 
(MUFs) in the Australian region on UT day 15-Dec were mostly 
near predicted monthly values to 15% enhanced. Sporadic E was 
common during local night hours at most sites. MUFs are expected 
to be near predicted vales over 16-18 Dec. Some mild enhancements 
are possible early in the period and then mild depressions are 
possible later in the period due to possible geomagnetic activity.

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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