[Ips-dhfpr] ASWFC Daily HF Prop Report - 12 January 24 issued 2331 UT on 12 Jan 2024 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/12 JANUARY 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (12 JANUARY) 
Date   T index  Conditions    
12 Jan   156    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
  M1.0    0258UT  possible   lower  E. Asia/Aust.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 30% during local night.
   Southern Australian Region:
      Enhanced by 25% during local day.
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Dec      110
Jan      106
Feb      105


2. FORECAST (13 JANUARY - 15 JANUARY)
Date   T index  Conditions       MUFs                              
13 Jan   150    Normal-fair      Near to 25% above predicted 
                                 monthly values
14 Jan   150    Normal           Near to 25% above predicted 
                                 monthly values    
15 Jan   145    Normal           Near to 25% above predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 4 was issued on 
12 January and is current for 13-14 Jan. Maximum usable frequencies 
(MUFs) on UT day 12-Jan were mostly enhanced by 15-30% in the 
Australian region. Sporadic-E was observed at Brisbane, Canberra, 
Hobart, Norfolk Island and Perth during local night and dawn 
hours. MUFs are expected to be near predicted monthly values 
to 25% enhanced over 13-15 Jan. Persistent sporadic-E is likely. 
Isolated shortwave fadeouts are possible.

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