[Ips-dhfpr] SWS Daily HF Prop Report - 16 November 21 issued 2331 UT on 16 Nov 2021

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/16 NOVEMBER 2021 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (16 NOVEMBER) 
Date   T index  Conditions    
16 Nov   -19    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Niue Island Region:
      Depressed by 15% during local day.
      Depressed by 30% during local night.
   Northern Australian Region:
      Depressed by 20% during local day.
      Depressed by 20% during local night.
   Southern Australian Region:
      Depressed by 25% during local day.
      Depressed by 15% during local night.
      Depressed by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Oct      18
Nov      32
Dec      35


2. FORECAST (17 NOVEMBER - 19 NOVEMBER)
Date   T index  Conditions       MUFs                              
17 Nov   -15    Normal-fair      15 to 30% below predicted monthly 
                                 values
18 Nov    -5    Normal-fair      Depressed 20%/near predicted 
                                 monthly values    
19 Nov     0    Normal           Depressed 10%/near predicted 
                                 monthly values   

COMMENT: SWS HF Communications Warning 35 was issued on 15 November 
and is current for 16-18 Nov. MUFs in the Australian region on 
UT day 16 November were mostly moderately depressed due to coronal 
hole effects and very low levels of ionising radiation. Mildly 
to moderately depressed MUF conditions are expected to continue 
for the next three UT days, 17 to 19 November in the Australian 
region.

----------------------------------------------------------
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.

Space Weather Services              email: asfc at bom.gov.au
Bureau of Meteorology
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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