[Ips-dhfpr] ASWFC Daily HF Prop Report - 14 December 22 issued 2331 UT on 14 Dec 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/14 DECEMBER 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (14 DECEMBER) 
Date   T index  Conditions    
14 Dec   122    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M2.5    0740UT  possible   lower  Mid East/Indian
  M1.2    0831UT  possible   lower  Mid East/Indian
  M1.4    0927UT  possible   lower  Mid East/Indian
  M1.2    1159UT  possible   lower  European
  M4.1    1231UT  possible   lower  European
  M6.4    1442UT  probable   lower  South American/
                                    Atlantic
  M2.2    1712UT  possible   lower  South American/
                                    Atlantic
  M1.3    2050UT  possible   lower  East Pacific/
                                    North American
  M2.3    2058UT  possible   lower  East Pacific/
                                    North American
  M1.3    2139UT  possible   lower  East Pacific/
                                    North American
  M2.0    2153UT  possible   lower  East Pacific/
                                    North American
  M4.5    2206UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Niue Island Region:
      Enhanced by 20% during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   Southern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 25% during local night.
   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 (15 DECEMBER - 17 DECEMBER)
Date   T index  Conditions       MUFs                              
15 Dec   105    Normal           10 to 20% above predicted monthly 
                                 values
16 Dec   105    Normal           10 to 20% above predicted monthly 
                                 values    
17 Dec    95    Normal           10 to 15% above 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 14-Dec were mostly 
15-25% enhanced. Sporadic-E was observed at Hobart and Learmonth 
during local night hours. MUFs are expected to be generally near 
predicted monthly values to 25% enhanced over 15-16 Dec, with 
MUFs returning to mostly near predicted values by 17-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