[Ips-dhfpr] ASWFC Daily HF Prop Report - 13 December 23 issued 2330 UT on 13 Dec 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/13 DECEMBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (13 DECEMBER) 
Date   T index  Conditions    
13 Dec   110    Normal         

Flares: none.

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.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Nov      114
Dec      100
Jan      98


2. FORECAST (14 DECEMBER - 16 DECEMBER)
Date   T index  Conditions       MUFs                              
14 Dec   110    Normal           Near predicted monthly values
15 Dec   110    Normal           Near predicted monthly values    
16 Dec   110    Normal-fair      Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) were near predicted 
monthly values in the Australian region on UT day 13-Dec. Mild 
spread F was observed at Hobart during local night hours. MUFs 
are expected to be near predicted monthly values over 14-16 Dec, 
with mildly degraded HF conditions possible for the southern 
Australian region during local night hours on 16-Dec, due to 
an anticipated weak CME arrival. Isolated 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