[Ips-dhfpr] ASWFC Daily HF Prop Report - 16 December 22 issued 2331 UT on 16 Dec 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/16 DECEMBER 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (16 DECEMBER) 
Date   T index  Conditions    
16 Dec    86    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M3.5    0202UT  possible   lower  E. Asia/Aust.
  M1.2    0459UT  possible   lower  E. Asia/Aust.
  M1.4    0549UT  possible   lower  E. Asia/Aust.
  M1.2    0642UT  possible   lower  Mid East/Indian
  M1.7    0738UT  possible   lower  Mid East/Indian
  M1.6    0905UT  possible   lower  Mid East/Indian
  M1.2    0943UT  possible   lower  Mid East/Indian
  M4.0    1019UT  possible   lower  European
  M2.5    1440UT  possible   lower  South American/
                                    Atlantic
  M1.3    1541UT  possible   lower  South American/
                                    Atlantic

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

PCA Event : No event.

Monthly T index:
Month  T index
Nov      77
Dec      70
Jan      70


2. FORECAST (17 DECEMBER - 19 DECEMBER)
Date   T index  Conditions       MUFs                              
17 Dec    90    Normal           Near predicted monthly values
18 Dec    90    Normal           Near predicted monthly values    
19 Dec    90    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 100 was issued on 
14 December and is current for 15-17 Dec. Maximum usable frequencies 
(MUFs) in the Australian region on UT day 16-Dec were mostly 
near predicted monthly values to 20% enhanced. Spread F observed 
at Perth and Hobart during local night. MUFs are expected to 
be generally near predicted monthly values to 15% enhanced over 
17-19 Dec. Shortwave fadeouts are probable.

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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