[Ips-dhfpr] ASWFC Daily HF Prop Report - 22 November 23 issued 2331 UT on 22 Nov 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/22 NOVEMBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (22 NOVEMBER) 
Date   T index  Conditions    
22 Nov    56    Fair           

Flares: none.

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

PCA Event : No event.

Monthly T index:
Month  T index
Oct      130
Nov      100
Dec      98


2. FORECAST (23 NOVEMBER - 25 NOVEMBER)
Date   T index  Conditions       MUFs                              
23 Nov    75    Fair             Near predicted monthly values 
                                 to 10-15% depressed
24 Nov    90    Normal-fair      Near predicted monthly values    
25 Nov   100    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 117 was issued on 
22 November and is current for 23-24 Nov. ASWFC HF Communications 
Warning 118 was issued on 22 November and is current for 23 Nov 
only. Maximum usable frequencies (MUFs) on UT day 22-Nov were 
depressed by up to 20% for most of the day in the Australian 
region. Sporadic-E was observed at Hobart, Canberra and Darwin 
for much of the day. MUFs are expected to begin recovering to 
normal conditions on 23-Nov, but may still be mildly depressed 
by 10-15%. 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