[Ips-dhfpr] ASWFC Daily HF Prop Report - 22 November 22 issued 2331 UT on 22 Nov 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/22 NOVEMBER 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (22 NOVEMBER) 
Date   T index  Conditions    
22 Nov    53    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Niue Island Region:
      Mostly near predicted monthly values.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Mostly near predicted monthly values.
      Depressed by 20% after local dawn.
   Southern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values 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
Oct      83
Nov      70
Dec      70


2. FORECAST (23 NOVEMBER - 25 NOVEMBER)
Date   T index  Conditions       MUFs                              
23 Nov    70    Normal           Near predicted monthly values
24 Nov    70    Normal           Near predicted monthly values    
25 Nov    70    Normal           Near predicted monthly values   

COMMENT: ASWFC HF Communications Warning 89 was issued on 22 
November and is current for 22-23 Nov. Maximum usable frequencies 
(MUFs) on UT day 22-Nov were 15-20% depressed to near predicted 
monthly values. The cause of the recent depressed ionospheric 
conditions in the Australian region is unclear. In general MUFs 
are expected to be mostly near predicted monthly values over 
23-25 Nov.

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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